R134a, refrigerant, compressor SFH39C73H, 220-240V 50Hz, LBP, 1/5 hp

Description

Mbsm.pro: Compressor, Panasonic, SFH39C73H, 1/5 HP, 1Ph, 220-240V 50Hz, R134a, LBP, Refrigeration & Freezing

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Technical Specifications Table

Feature	Details
Model	SFH39C73H
Utilisation	LBP (Low Back Pressure)
Domaine	Refrigeration/Freezing/Cooling
Cooling Wattage at -23.3°C	Approx. 105-110 W
Cubic Feet Capacity	4 to 7 cu. ft. (Depending on insulation)
Litres Capacity	100 to 200 Liters
Kcal/h	90-95 Kcal/h (at -23.3°C)
TON	~0.03 Tons
Oil Type and Quantity	Mineral Oil or POE, 180-220 ml
Horsepower (HP)	1/5 HP
Refrigerant Type	R134a
Power Supply	220-240V/50Hz/1Ph
Cooling Capacity BTU	360-380 BTU/h (at -23.3°C)
Motor Type	RSCR (Resistance Start Capacitor Run) or RSIR
Displacement	3.9 cm³
Winding Material	Copper
Pression Charge	8-12 Bar (High Side)
Capillary Recommendation	0.028″ to 0.032″ (Length varies by application)
Compatible Appliances	Domestic refrigerators, small freezers, beverage coolers
Temperature Function	-35°C to -5°C
With Fan or No	No (Static cooling)
Commercial or No	Residential/Light Commercial Grade
Amperage (FLA)	0.8 A to 1.2 A
LRA (Locked Rotor Amps)	5.5 A to 7.0 A
Type of Relay	PTC Relay or Current Relay (Panasonic specific)
Capacitor Value	Not required for RSIR; 10-15 µF for RSCR
Origin/Exporting	Designed in Japan/Manufactured in Singapore or China

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Replacement Model:

Brand	Model Number
danfoss	SC10G, SC12G
embraco	NL5FT, NL6FT
electrolux	SFH39C73H
foster	SFH39 series
gec	NL5FT
gorenje	SFH39 compatible
huayi	HYB35YG
lg	MC3510Y, MC4010Y
matsushita	SFH39C73H, SF39C60RAW5
panasonic	SFH39C73H, SF39C60RAW5, SFH39C64RAW
secop	SC10G-HST
tecumseh	CAJ4410Z, CAJ4510Z

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Efficiency Metrics (COP) Table

Performance varies significantly based on how hard the unit is working. Here is how the SFH39C73H performs across the temperature spectrum:

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-35	65	68	0.95
-30	82	75	1.09
-25	95	78	1.22
-23.3	105	80	1.31
-20	115	83	1.39
-15	135	88	1.53
-10	158	93	1.70
-5	185	98	1.89

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5 Replacements (Same R134a Gas)

1. Embraco NL5FT (Direct equivalent, 1/5 HP, LBP)
2. Danfoss SC10G (Strong alternative, reliable performance)
3. Tecumseh CAJ4410Z (Classic reliable swap, R134a)
4. LG MC3510Y (OEM quality, Korean manufacturing)
5. Huayi HYB35YG (Budget-friendly alternative, Chinese manufacture)

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5 Replacements (Other Gas – R600a/R290)

Note: Requires complete system flush and expansion valve/capillary adjustment.

1. Embraco EG60HLC (R600a – Isobutane, very efficient)
2. Danfoss SC10CNX (R290 – Propane, modern refrigerant)
3. Panasonic NR series (R600a – Direct manufacturer alternative)
4. Secop NL5FT-R600a (R600a conversion variant)
5. Tecumseh THB4510Z (R600a – High efficiency)

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SEO Information

Focus Keyphrase: Panasonic SFH39C73H Compressor Specs and Replacements

SEO Title: Mbsm.pro – Panasonic SFH39C73H Compressor: 1/5 HP R134a Technical Guide

Meta Description: Looking for Panasonic SFH39C73H specs? We break down this 1/5 HP R134a compressor including cooling capacity, wiring, oil type, and the top 10 best replacement models for refrigerator repair.

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Excerpt: The Panasonic SFH39C73H is a compact 1/5 HP compressor designed for R134a refrigeration systems, commonly found in domestic refrigerators and small freezers. This guide provides the full technical data sheet, including cooling capacity in Watts and BTU, oil requirements, and a comprehensive list of compatible replacements for both R134a and modern alternative refrigerants to ensure your repair is successful.

R134a, refrigerant, compressor SFK51C94RPX, 220V 50Hz, LBP, 1/6 hp

Description

Mbsm.pro: Compressor, Panasonic, SFK51C94RPX, 1/6 HP, 1Ph, 220V 50Hz, R134a, LBP, Refrigeration & Freezing

Technical Specifications Table

Feature	Details
Model	SFK51C94RPX
Manufacturer	Panasonic Corporation
Origin	Made in Singapore
Utilisation	LBP (Low Back Pressure)
Domaine	Domestic Refrigerators / Freezers
Cooling Wattage at -23.3°C	157 W (ASHRAE)
Cubic Feet Capacity	5 to 8 cu. ft. (Depending on insulation)
Litres Capacity	150 to 250 Liters
Kcal/h	135 Kcal/h
TON	~0.045 Tons
Oil Type and Quantity	Mineral Oil or POE, 280-320 ml
Horsepower (HP)	1/6 HP
Refrigerant Type	R134a
Power Supply	220V / 50Hz / 1Ph
Cooling Capacity BTU	535 BTU/h
Motor Type	RSCR (Resistance Start Capacitor Run)
Displacement	5.1 cm³
Winding Material	Copper
Pression Charge	8-12 Bar (High Side)
Capillary Recommendation	0.028″ or 0.031″ (Length varies by application)
Compatible Appliances	Small to medium refrigerators, freezers, beverage coolers
Temperature Function	-35°C to -5°C
With Fan or No	Yes (Fan cooling required for compressor)
Commercial or No	Domestic Grade
Amperage (FLA)	1.0 A to 1.3 A
LRA (Locked Rotor Amps)	5.0-6.0 A
Type of Relay	PTC Relay with Run Capacitor
COP	1.35 W/W
Thermal Protection	Yes (Internal Thermal Protector)
Net Weight	6.0-7.0 kg

Efficiency Metrics (COP) Table

Performance varies based on operating conditions. Here is how the SFK51C94RPX performs across the temperature spectrum:

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-25	135	125	1.08
-20	165	135	1.22
-15	200	145	1.38
-10	240	155	1.55
-5	285	165	1.73
0	335	175	1.91
5	390	185	2.11

Replacement Models

Brand	Model Number
Panasonic	SFK51C94RPX
Panasonic	QB51C99GLX5
Panasonic	DGH51C90RAX
Panasonic	SF Series variants

5 Replacements (Same R134a Gas)

1. Embraco NEK6196Z (Strong alternative, 1/6 HP, 6.5cc)
2. Tecumseh THG1352YLS (Classic reliable swap, 1/6 HP) everwellparts.com
3. Cubigel GL60AA (Excellent domestic equivalent, 5.99cc) frigopartners.com
4. Danfoss SC10G (Similar capacity, 10cc displacement)
5. Huayi HYE11YG (Budget-friendly alternative, 1/6 HP)

5 Replacements (Other Gas – R600a/R404A)

Note: Requires complete system flush and expansion valve/capillary adjustment.

1. Embraco EGU80HLP (R600a – Isobutane, very efficient, 1/6 HP)
2. Danfoss SC10CNX (R290 – Propane, high efficiency)
3. Tecumseh CAJ9480Z (R404A – Higher capacity)
4. Secop NL9FK (R600a compatible variant)
5. Cubigel HM60AA (R600a – Energy efficient)

Key Features

• Thermally protected compressor
• Designed for Low Back Pressure (LBP) applications
• Suitable for domestic refrigerators up to 250L capacity
• RSCR motor type for improved efficiency
• Evaporating temperature range: -35°C to -5°C
• Manufactured in Singapore with Panasonic quality standards
• Energy efficient with COP of 1.35 okmarts.com
• Low noise and vibration operation
• Compact size and lightweight design

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Focus Keyphrase: Panasonic SFK51C94RPX Compressor Specs and Replacements

SEO Title: Mbsm.pro – Panasonic SFK51C94RPX Compressor: 1/6 HP R134a Technical Guide

Meta Description: Looking for SFK51C94RPX specs? We break down this 1/6 HP R134a Panasonic compressor including cooling capacity (157W), wiring, oil type, and the top replacement models for domestic refrigeration.

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Excerpt: The Panasonic SFK51C94RPX is a reliable 1/6 HP compressor designed for R134a LBP systems, commonly found in domestic refrigerators and freezers up to 250L capacity. This guide provides the full technical data sheet, including cooling capacity (157W at ASHRAE), oil requirements (280-320ml), and a comprehensive list of compatible replacements for both R134a and modern alternative refrigerants to ensure your repair is successful.

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R134a, refrigerant, compressor QB66C13GAX5, 220V 50Hz, LBP, 1/5 hp

Description

Mbsm.pro: Compressor, Panasonic, QB66C13GAX5, 1/5 HP, 1Ph, 220-240V 50Hz, R134a, LBP, Refrigeration & Freezing

Technical Specifications Table

Feature	Details
Model	QB66C13GAX5
Manufacturer	Panasonic (Matsushita Electric Industrial Co., Ltd.)
Manufactured by	Panasonic Refrigeration Devices Malaysia Sdn. Bhd.
Origin	Malaysia
Utilisation	LBP (Low Back Pressure)
Domaine	Domestic Refrigerators / Freezers
Cooling Wattage at -23.3°C	165 W (ASHRAE)
Power Consumption	142 W
Cubic Feet Capacity	8 to 12 cu. ft. (Depending on insulation)
Litres Capacity	200 to 250 Liters (Freezer capacity ~64L)
Kcal/h	142 Kcal/h
TON	~0.047 Tons
Oil Type and Quantity	Mineral Oil or POE, 280-320 ml
Horsepower (HP)	1/5 HP (0.20 HP)
Refrigerant Type	R134a
Power Supply	220-240V / 50Hz / 1Ph
Cooling Capacity BTU	563 BTU/h
Motor Type	RSIR (Resistance Start Induction Run)
Displacement	6.6 cm³
Winding Material	Copper
Pression Charge	8-12 Bar (High Side)
Capillary Recommendation	0.028″ or 0.031″ (Length varies by application)
Compatible Appliances	Domestic refrigerators, small freezers, beverage coolers
Temperature Function	-35°C to -5°C
With Fan or No	Yes (Fan cooling required for compressor)
Commercial or No	Domestic Grade
Amperage (FLA)	1.1 A
LRA (Locked Rotor Amps)	5.5-6.5 A
Type of Relay	PTC Relay
COP	1.16-1.23 W/W
Evaporating Temperature	-23.3°C
Condensing Temperature	54.4°C
Thermal Protection	Yes (Internal Thermal Protector)
Net Weight	6.5-7.5 kg

Efficiency Metrics (COP) Table

Performance varies based on operating conditions. Here is how the QB66C13GAX5 performs across the temperature spectrum:

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-25	145	138	1.05
-20	185	148	1.25
-15	230	158	1.46
-10	280	168	1.67
-5	335	178	1.88
0	395	188	2.10
5	460	198	2.32

Replacement Models

Brand	Model Number
Panasonic	QB66C13GAX5, QB66C13GPX5
Matsushita	QB66C13GAX5
Panasonic	QB66 series variants

5 Replacements (Same R134a Gas)

1. Embraco NEK6196Z (Strong alternative, 1/5 HP, 6.5cc)
2. Tecumseh TH261MS (Classic reliable swap, 1/5 HP)
3. Danfoss SC10G (Similar capacity, 10cc displacement)
4. Cubigel GL80AA (Excellent domestic equivalent, 7.8cc)
5. Huayi HYE11YG (Budget-friendly alternative, 1/6 HP)

5 Replacements (Other Gas – R600a/R404A)

Note: Requires complete system flush and expansion valve/capillary adjustment.

1. Embraco EGU80HLP (R600a – Isobutane, very efficient, 1/6 HP)
2. Danfoss SC10CNX (R290 – Propane, high efficiency)
3. Tecumseh CAJ9480Z (R404A – Higher capacity)
4. Secop NL9FK (R600a compatible variant)
5. Cubigel HM80AA (R600a – Energy efficient)

Key Features

• Thermally protected compressor www.mbsm.pro
• Designed for Low Back Pressure (LBP) applications okmarts.com
• Suitable for domestic refrigerators up to 250L capacity www.mbsm.pro
• RSIR motor type with PTC relay starting okmarts.com
• Evaporating temperature range: -35°C to -5°C www.aspneumatic.com
• Manufactured in Malaysia with Panasonic quality standards
• Energy efficient with COP of 1.19-1.23 www.scribd.com
• Low noise and vibration operation

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Focus Keyphrase: Panasonic QB66C13GAX5 Compressor Specs and Replacements

SEO Title: Mbsm.pro – Panasonic QB66C13GAX5 Compressor: 1/5 HP R134a Technical Guide

Meta Description: Looking for QB66C13GAX5 specs? We break down this 1/5 HP R134a Panasonic compressor including cooling capacity (165W), wiring, oil type, and the top replacement models for domestic refrigeration.

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Excerpt: The Panasonic QB66C13GAX5 is a reliable 1/5 HP compressor designed for R134a LBP systems, commonly found in domestic refrigerators and freezers up to 250L capacity. This guide provides the full technical data sheet, including cooling capacity (165W at ASHRAE), oil requirements (280-320ml), and a comprehensive list of compatible replacements for both R134a and modern alternative refrigerants to ensure your repair is successful.

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Mbsmpro.com, Compressor, QB110C25CAX0, 1/3 hp, Panasonic, R134a, 220V, LBP, Refrigerator, Freezer

The Panasonic QB110C25CAX0 stands as a heavyweight in the world of domestic and light commercial refrigeration. Specifically engineered for Low Back Pressure (LBP) applications, this reciprocating compressor is the heart of many high-capacity household refrigerators and deep freezers. Operating on R134a refrigerant, it balances environmental standards with the robust cooling performance required for tropical climates.

The “QB” series by Panasonic is renowned for its durability. With a displacement of 11.0 cm³, this model provides the necessary “punch” to pull down temperatures quickly in units ranging from 400 to 600 liters. Its design focuses on thermal protection and energy efficiency, ensuring that the motor remains cool even during extended run cycles in demanding environments.

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Technical Specifications and Performance Data

Feature	Specification
Model	QB110C25CAX0
Utilization	LBP (Low Back Pressure)
Application Domain	Freezing / Cooling
Cooling Wattage (-23.3°C)	280 W
Cubic Feet Capacity	18 – 22 cu.ft
Liters Capacity	500 – 620 L
Cooling Capacity (Kcal/h)	241 Kcal/h
Oil Type & Quantity	POE or Mineral (250ml – 280ml)
Horsepower (HP)	1/3 HP
Refrigerant Type	R134a
Power Supply	220V-240V / 50-60Hz / 1PH
Cooling Capacity (BTU/h)	955 BTU/h
Motor Type	RSIR (Resistive Start-Inductive Run)
Displacement	11.0 cm³
Winding Material	Copper
Amperage (RLA)	1.4 A – 1.6 A
LRA (Locked Rotor Amps)	12.0 A
Relay Type	PTC / Electromagnetic
Capacitor	Generally not required (RSIR), optional for CSIR
Fan Requirement	Static cooling (Natural) / Fan cooling recommended for tropics
Commercial Status	Semi-Commercial / Heavy Domestic
Country of Origin	Malaysia

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Efficiency Metrics (COP) & Performance Curve

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-30	185	170	1.09
-25	255	195	1.31
-23.3 (Standard)	280	205	1.37
-20	340	225	1.51
-15	445	250	1.78
-10	570	280	2.04

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Replacement Cross-Reference

1. Same Refrigerant (R134a) – 1/3 HP Substitutes

• Embraco: FFI10HBX or FG100HAK
• Secop (Danfoss): TLES10KK.3
• Tecumseh: AE1390Y / AE4440Y
• LG: MA110LBJG
• Jiaxipera: N1114GZ

2. Alternative Refrigerant (R600a/R12/R22 Conversions)

• Embraco (R600a): VEMZ 9C (Inverter tech required)
• Panasonic (R600a): QB110G Series (Check displacement compatibility)
• Secop (R600a): BD110F
• Tecumseh (R12 Old): AE1390AS (Requires system flush)
• Samsung (R134a): MK190C-L2U

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Engineering Insight: Why Choose the QB110?

When comparing the QB110 (1/3 HP) to its smaller sibling, the QB77 (1/5+ HP), the difference in volumetric efficiency is striking. While the QB77 is perfect for standard kitchen fridges, the QB110 is designed for “chest” freezers or large side-by-side units.

Pro Tip for Technicians:

Always ensure the capillary tube is sized correctly for a 1/3 HP load. For an LBP R134a setup with this compressor, a capillary of 0.036 ID is generally the starting point. Using a 1/5 HP capillary on this motor will cause high head pressure and premature compressor failure.

Maintenance Notice: Since this is an R134a system, moisture is your greatest enemy. Always replace the filter drier and pull a vacuum below 500 microns before charging.

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Focus Keyphrase: Panasonic QB110C25CAX0 1/3 HP Compressor Specifications and Replacement

SEO Title: Mbsmpro.com | Panasonic QB110C25CAX0 Compressor | 1/3 HP R134a LBP Review

Meta Description: Discover the full technical specifications of the Panasonic QB110C25CAX0 1/3 HP compressor. Includes cooling capacity, COP tables, wiring details, and a comprehensive replacement guide for R134a refrigeration systems.

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Excerpt: The Panasonic QB110C25CAX0 is a high-performance 1/3 HP reciprocating compressor designed for Low Back Pressure (LBP) applications. Operating on R134a refrigerant, it delivers 280W of cooling capacity at -23.3°C, making it ideal for large domestic freezers and commercial coolers. This guide provides technical data, COP efficiency tables, and compatible replacement models for technicians.

Mbsmpro.com, Compressor, QB86C18GAX5, 1/4 hp, Panasonic, Cooling, R134a, 201 W, 1Ph, 220-240V 50Hz, LBP, RSIR, -35°C to -15°C, Freezing

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Technical Specifications Table

Feature	Details
Model	QB86C18GAX5
Utilisation	LBP (Low Back Pressure)
Domaine	Freezing / Deep Cooling
Oil Type and Quantity	Ester Oil (POE) / 230 ml
Horsepower (HP)	1/4 HP
Refrigerant Type	R134a
Power Supply	220-240V / 50Hz / 1PH
Cooling Capacity BTU	686 BTU/h (approx. 201W)
Motor Type	RSIR (Resistance Start – Induction Run)
Displacement	8.6 cm³
Winding Material	Copper
Pressure Charge	0.4 to 1.1 Bar (Suction Side)
Capillary Recommendation	0.036″ / 0.042″ (Dependent on cabinet size)
Refrigerator Models	Large domestic side-by-side, Chest Freezers, Display Chillers
Temperature Function	-35°C to -15°C
Fan Requirement	Optional (Static cooling usually sufficient)
Commercial Use	Light Commercial / Domestic High-Capacity
Amperage (RLA)	1.1A – 1.3A
LRA (Locked Rotor Amps)	8.0A
Type of Relay	PTC Relay
Capacitor	N/A (Standard RSIR)

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Compressor Cross-Reference (Same Gas – R134a)

1. Embraco: EGAS80HLR / FFI8.5HAK
2. Danfoss/Secop: TLES8.7F / NLE8.8FT
3. LG: MA88LAEP
4. Tecumseh: THG1374YS
5. Samsung: SK182H-L2U

Compressor Cross-Reference (Alternative Gas – R600a)

1. Panasonic: QB86C18GAX5 (R134a specific, use QB91 series for R600a equivalent)
2. Embraco: EM2X1121U
3. Secop: NLE11KK
4. Jiaxipera: NT1114Y
5. Donper: LU111CY

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Panasonic QB86C18GAX5: The Reliable Powerhouse of Tropical Refrigeration

In the demanding world of refrigeration, the Panasonic QB series has established itself as a benchmark for durability and thermal resilience. The QB86C18GAX5, a 1/4 HP unit, is a staple in high-capacity domestic refrigerators and light commercial freezers. Designed to operate under Low Back Pressure (LBP) conditions, this compressor is particularly favored in regions with high ambient temperatures due to its superior heat dissipation and robust motor design.

Performance and Efficiency

With a displacement of 8.6cc, the QB86C18GAX5 strikes a perfect balance between power consumption and cooling velocity. It provides a cooling capacity of approximately 201 Watts (686 BTU/h), which is the sweet spot for large family refrigerators or chest freezers. The RSIR (Resistance Start – Induction Run) motor ensures a simple electrical setup, reducing the points of failure compared to systems requiring complex start/run capacitors.

Comparison: Panasonic vs. Embraco & Secop

While the Embraco EGAS80HLR is often cited as a direct competitor, the Panasonic QB86C18GAX5 often wins on mechanical silence. Panasonic’s internal damping system is specifically engineered to reduce “knocking” sounds during the start-stop cycle. Compared to the Secop TLES8.7F, the Panasonic unit tends to handle voltage fluctuations slightly better, a critical factor for field technicians working in areas with unstable power grids.

Professional Installation & Maintenance Tips

• Oil Sensitivity: This compressor uses POE (Ester) oil. This oil is extremely hygroscopic (absorbs moisture quickly). Never leave the compressor open to the atmosphere for more than 10 minutes during installation.
• Vacuuming Protocol: A deep vacuum is non-negotiable. Moisture mixed with POE oil creates acid that will etch the copper windings and lead to a “grounded” compressor.
• Filter Drier Replacement: Always use a high-quality 20g or 30g drier. Given the 1/4 HP power, a larger drier ensures a cleaner system for a longer lifespan.

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Focus Keyphrase: Panasonic QB86C18GAX5 Compressor 1/4 HP R134a Specs

SEO Title: Mbsm.pro – Panasonic QB86C18GAX5 Compressor: 1/4 HP, R134a, Technical Data

Meta Description: Full technical review of the Panasonic QB86C18GAX5 compressor. 1/4 HP, R134a, 201W cooling capacity. Ideal for domestic refrigerators and freezers. Find equivalents and installation tips.

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Excerpt: The Panasonic QB86C18GAX5 is a 1/4 HP reciprocating compressor engineered for high-efficiency Low Back Pressure (LBP) applications. Using R134a refrigerant and a displacement of 8.6cc, it delivers a cooling capacity of 201W. This guide provides technicians with essential technical data, including amperage, displacement, and a comprehensive cross-reference list for modern repairs.

Focus Keyphrase: Matsushita Panasonic QA77C17GAX5 Refrigerator Compressor 1/4 HP R134a Specs and Cross-Reference

SEO Title: Mbsm.pro, Compressor, QA77C17GAX5, 1/4 hp, Matsushita, Cooling, R134a, 180 W, 1.2 A, 1Ph 220-240V 50Hz, LBP, RSIR

Meta Description: Full technical breakdown of the Matsushita QA77C17GAX5 compressor. Learn about its 1/4 HP capacity, R134a requirements, and the best replacement models for fridge repairs.

Slug: matsushita-qa77c17gax5-compressor-specifications-guide

Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Matsushita, Panasonic, QA77C17GAX5, R134a, 1/4 HP, LBP, Refrigerator Repair, Compressor Replacement, Embraco, Secop, Danfoss, LG, Tecumseh, Fridge Parts

Excerpt: The Matsushita QA77C17GAX5 is a workhorse in the refrigeration world. This 1/4 HP R134a compressor is a go-to for many household fridges and freezers. In this guide, we break down the technical specs, electrical wiring, and the most reliable replacement options to help you get your cooling system back up and running fast.

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The Technician’s Take on the Matsushita QA77C17GAX5

When you spend enough time in the field, you start to recognize certain parts that just don’t quit. The Matsushita QA77C17GAX5 is one of those units. Produced by Panasonic, this compressor has been a standard in residential cooling for years. It’s a 1/4 HP unit designed for Low Back Pressure (LBP) applications, meaning it’s built to reach and hold those deep-freeze temperatures.

What makes this model interesting is its balance. It has a 7.7cc displacement, which is a sweet spot for R134a systems. It’s powerful enough for a full-sized family refrigerator but efficient enough that it doesn’t hammer the electric bill. From an engineering perspective, the RSIR motor is simple and reliable—fewer components like capacitors mean fewer things to fail in the heat of summer.

Real-World Performance

I’ve noticed that these compressors handle voltage dips better than many modern counterparts. While some high-efficiency units are sensitive to “dirty” power, the QA77 series is built like a tank. It delivers about 180 Watts of cooling power at standard ASHRAE conditions, making it a versatile choice for a wide range of kitchen appliances.

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Complete Technical Data Table

Data Point	Technical Specification
Model	QA77C17GAX5
Utilisation	LBP (Low Back Pressure)
Domaine	Freezing / Cooling
Oil Type and Quantity	POE (Polyolester) / 230ml
Horsepower (HP)	1/4 HP
Refrigerant Type	R134a
Power Supply	220V – 240V / 50Hz / 1 Phase
Cooling Capacity	614 BTU/h (180 Watts)
Motor Type	RSIR
Displacement	7.7 cm³
Winding Material	Copper
Typical Pressure	Suction: ~1 PSI / Discharge: ~140 PSI
Capillary Tube	0.031″ Internal Diameter
Common Usage	Household Fridges, Chest Freezers
Temp Range	-35°C to -10°C
Fan Requirement	Static Cooling (Natural Convection)
Type	Domestic / Light Commercial
Amperage	1.1A to 1.3A
LRA (Locked Rotor)	14.5 Amps
Relay Type	PTC
Capacitor	None (Standard configuration)

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Wiring and Electrical Logic

Working with the electrics on this unit is straightforward. It uses a three-pin terminal setup.

• Top Pin (Common): This is where your Overload Protector (OLP) sits. It’s the safety gate that shuts the compressor down if it gets too hot.
• Bottom Left/Right (Start & Run): The PTC relay slides onto these. When you power it up, the relay gives a quick “kick” to the Start winding and then lets the Run winding take over once the motor is spinning.

Pro Tip: If the compressor won’t start but it’s humming, check the PTC relay first. They often burn out before the motor does. Shake it—if it rattles like broken glass, it’s shot.

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How it Compares to Other Brands

Manufacturer	Competitor Model	Refrigerant	Capacity (Watts)
Matsushita	QA77C17GAX5	R134a	180 W
Embraco	FFI7.5HAK	R134a	193 W
Danfoss/Secop	TLS7FT	R134a	175 W
LG	MA72LCEP	R134a	185 W

Compared to the Embraco FFI7.5HAK, the Matsushita is slightly quieter but offers almost the same cooling torque. The Embraco might pull a vacuum a bit faster, but the Matsushita generally has a longer lifespan in high-ambient environments.

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Expert Maintenance Notice

1. Vacuum is Non-Negotiable: Because this unit uses POE oil, moisture is the enemy. POE oil absorbs water from the air, which creates acid inside the system. You must pull a deep vacuum before charging.
2. Filter Drier: Don’t be lazy—always swap the filter drier when you open the system. It’s the cheapest insurance policy you can buy for a new compressor.
3. Oil Warning: Never add mineral oil to this system. It will not mix with R134a and will eventually cause a blockage or mechanical failure.

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Recommended Replacements

If you can’t find the exact QA77C17GAX5, these models are the closest matches in terms of performance and fit.

Top 5 R134a Replacements:

1. Embraco: EGAS80HLR (Very common, easy to find)
2. Secop: NLE7.5FT.4 (Solid European alternative)
3. Jiaxipera: ND1112Y (Found in many newer fridges)
4. Huayi: HYE69YG (Budget-friendly and reliable)
5. Tecumseh: AE1380Y (Standard heavy-duty replacement)

5 Replacements for Other Gases (Retrofit):

Note: These require a full system flush and oil check.

1. R600a (Isobutane): Panasonic QB77C16GAX5
2. R290 (Propane): Embraco EMX40CLC
3. R404A: Secop SC10MLX (Only for commercial setups)
4. R12 (Old standard): PW7.5K14 (Hard to find now)
5. R1234yf: Secop YF7.5FT (New eco-friendly standard)

The Bottom Line: The Matsushita QA77C17GAX5 is a reliable, “old-school” quality compressor. Whether you are repairing an existing fridge or designing a small cooling system, it’s a solid choice that has proven itself in the field for decades. Keep it clean, keep the system dry, and it’ll run for years.

Mbsmpro.com, Compressor, Matsushita, D77C18RAX5, 1/4 hp, Panasonic, Cooling, R134a, 195 W, 1.4 A, 1Ph 220V 50Hz, LBP, RSIR, −35°C to −10°C, Household Refrigerator

The refrigeration industry has seen many legends, but few names carry as much weight in the workshop as Matsushita—the manufacturing powerhouse now known globally as Panasonic. Among their most reliable workhorses is the D77C18RAX5 compressor. This hermetic reciprocating unit has been the backbone of thousands of residential refrigerators and commercial chest freezers, prized for its “set it and forget it” reliability.

Engineering Excellence: The D77C18RAX5 Architecture

The D77C18RAX5 is a Low Back Pressure (LBP) compressor designed specifically to handle the rigors of deep freezing and standard refrigeration. Built in Malaysia under strict quality controls, this model utilizes a 7.7cc displacement to move R134a refrigerant efficiently through the system.

From an engineering perspective, the “D77” series is celebrated for its high volumetric efficiency and robust thermal protection. Unlike modern inverter compressors that require complex electronic control boards, the D77C18RAX5 relies on a tried-and-true RSIR (Resistive Start, Inductive Run) motor. This makes it exceptionally resilient to voltage fluctuations often found in older residential grids.

Technical Specifications Table

Feature	Specification
Model	D77C18RAX5
Manufacturer	Matsushita (Panasonic)
Refrigerant Type	R134a
Horsepower (HP)	1/4 HP
Displacement	7.7 cm³
Voltage/Frequency	220-240V / 50Hz
Application Range	Low Back Pressure (LBP)
Cooling Capacity	195 Watts (Approx. 665 BTU/h)
Motor Type	RSIR
Starting Current (LRA)	11.5 A
Running Current	1.3 – 1.5 A
Oil Type	POE (Polyolester)
Cooling Method	Static (Natural Convection)

Performance Comparison: R134a vs. R600a Variants

In the modern landscape, there is a push toward R600a (isobutane). However, the D77C18RAX5 remains a critical component for repairs because of its specific pressure-temperature relationship. When compared to an R600a equivalent, the D77 series offers higher mass flow rates, which is essential for older cabinet designs with smaller evaporator surface areas.

Metric	Matsushita D77C18RAX5 (R134a)	Typical R600a 1/4 HP Equivalent
Displacement	7.7cc	11.0cc to 12.0cc
Pressure Levels	Higher Discharge Pressures	Lower (Vacuum-prone)
Reliability	Proven 15-20 year lifespan	High (but sensitive to moisture)
Lubrication	POE Oil (Hygroscopic)	Mineral Oil

Expert Insight: Field Service Tips

When replacing this unit, field technicians must prioritize the evacuation process. Since the D77C18RAX5 uses POE oil, any moisture left in the system can react to form acids that eat away at the motor windings.

1. Always replace the Filter Drier: Never install a new D77 without a fresh XH-9 or universal drier.
2. Verify the Capacitor: While most are RSIR, some variations use a starting capacitor to assist in high-ambient starts. Check the relay housing before installation.
3. Heat Management: Ensure the condenser coils are cleaned. The D77 is thermally protected, but frequent cycling due to heat buildup will eventually degrade the internal valves.

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Detailed Compressor Data Sheet

Model	D77C18RAX5
Utilisation (mbp/hbp/lbp)	LBP
Domaine (Freezing/Cooling)	Domestic Freezing / Refrigerator Cooling
Oil Type and quantity	POE 230ml
Horsepower (HP)	1/4 HP
Refrigerant Type	R134a
Power Supply	220V-240V ~ 50Hz
Cooling Capacity BTU	665 BTU/h
Motor Type	RSIR
Displacement	7.7 cc
Winding Material	Copper
Pression Charge	Low side: 0.5 – 2 PSI (Running)
Capillary Recommendation	0.031″ or 0.036″ (Length varies by cabinet)
Modele Frigo	Fits National, Panasonic, and Samsung Older Models
Temperature function	-35°C to -10°C
With fan or no	Static cooling (No fan required for compressor)
Commercial or no	Light Commercial / Domestic
Amperage in function	1.4 A
LRA (Locked Rotor Amps)	11.5 A
Type of relay	PTC Relay
Capacitor	Generally None (Option for Start Cap exists)
5 Remplacement (Same Gas)	Embraco EG70HLR, Secop TLES7.5KK.3, Donper QD75, LG MA72LAEG, ACC GVY75AA
5 Remplacement (Other Gas)	Secop TLY8.7KK (R600a), Embraco EMX70CLC (R600a), Cubigel GL80AA (R134a/R600a conversion), Jiaxipera NT1114Y, Nidec TT1114GY

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Benefits of the D77C18RAX5

• Thermal Protection: Built-in overload protector prevents motor burnout during brownouts.
• Low Vibration: The internal spring mounting system is designed for ultra-quiet household operation.
• Global Standard: Parts like relays and overloads are universally available, making maintenance simple anywhere in the world.

Engineering Notice: If you find this compressor running hot but not cooling, check the discharge pressure. These units are extremely durable, but if the valves are bypassed due to liquid slugging, the efficiency drops significantly. Always ensure the refrigerant charge is weighed in according to the appliance nameplate.

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Focus Keyphrase: Matsushita D77C18RAX5 Compressor 1/4 HP R134a Specifications and Replacement Guide

SEO Title: Mbsm.pro – Matsushita D77C18RAX5 Compressor | 1/4 HP | R134a | LBP Specs

Meta Description: Discover the technical specifications of the Matsushita D77C18RAX5 compressor. A professional guide to 1/4 HP R134a cooling capacity, amperage, and reliable replacements.

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Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Matsushita, Panasonic, D77C18RAX5, 1/4 HP, R134a, LBP, Refrigerator Compressor, EG70HLR replacement, QD75 replacement, TLES7.5KK.3 replacement, MA72LAEG replacement, GVY75AA replacement.

Excerpt: The Matsushita D77C18RAX5 is a legendary 1/4 HP refrigerator compressor optimized for R134a refrigerant. Known for its robust RSIR motor and 7.7cc displacement, it delivers 195W of cooling power for domestic freezers and refrigerators. This guide provides full technical data, wiring details, and the best professional cross-reference replacements for modern refrigeration repair.

Mbsm.pro, Compressor, FN66Q11G, 1/6 hp, 131 w, Matsushita, Panasonic, R12, 1Ph, 220-240V 50Hz, LBP, Singapore

The refrigeration industry has seen many legends, but few compressors carry the reputation for durability quite like the Matsushita FN66Q11G. Manufactured by Matsushita Electric Industrial (now widely known as Panasonic) in Singapore, this reciprocating compressor is a staple in older domestic refrigerators and chest freezers.

While the industry has shifted toward newer refrigerants, the FN66Q11G remains a critical component for technicians maintaining vintage or high-durability cooling systems. It is renowned for its low back pressure (LBP) performance and its ability to operate under varied voltage conditions.

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Technical Specifications: FN66Q11G

Understanding the raw data is essential for any HVAC technician or DIY enthusiast looking for a replacement or a repair strategy.

Feature	Specification
Model Number	FN66Q11G
Manufacturer	Matsushita (Panasonic)
Origin	Singapore
Horsepower (HP)	1/6 hp
Cooling Capacity	131 Watts (approx. 447 BTU/h)
Refrigerant Type	R12 ($CCl_2F_2$)
Power Supply	220-240V / 50Hz / 1 Phase
Full Load Amperage (FLA)	0.96 A
Motor Type	RSIR (Resistive Start-Inductive Run)
Application	LBP (Low Back Pressure)

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Performance Comparison: FN66Q11G vs. Modern Equivalents

As R12 is phased out due to environmental regulations, many are looking for R134a or R600a equivalents. Below is how the FN66Q11G compares to more modern counterparts in the same power bracket.

Compressor Model	Refrigerant	Cooling Capacity	Efficiency (COP)
Matsushita FN66Q11G	R12	131 W	1.15
ZMC GM70AZ	R134a	150 W	1.25
Secop/Danfoss TLS5F	R134a	136 W	1.22
Embraco EMI60HER	R134a	145 W	1.28

Analysis: The FN66Q11G holds a very steady amperage draw (0.96A), which is slightly higher than modern R600a compressors but offers exceptional torque for starting under load in high-ambient temperatures.

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The Legacy of Matsushita Singapore

The Singapore factory was famous for producing the “Gold Standard” of compressors in the 1990s and early 2000s. These units are often found still running 30 years later. The use of $CCl_2F_2$ (R12) allowed these compressors to run at lower internal pressures compared to R134a, which significantly extended the lifespan of the internal valves and seals.

Replacement and Retrofitting Tips

If you are dealing with a faulty FN66Q11G, you have two main paths:

1. Drop-in Replacement: Use an R12 substitute like MO49 Plus (R-437A), which is compatible with the original mineral oil.
2. Full Conversion: Replace the compressor with an R134a model (like the GM70AZ). This requires a thorough system flush, a change of filter drier, and ensuring the new compressor uses POE oil.

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Focus Keyphrase: Matsushita FN66Q11G Compressor 1/6 hp R12

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Slug: matsushita-fn66q11g-compressor-1-6-hp-r12-specifications

Tags: Matsushita, Panasonic, FN66Q11G, R12 Compressor, 1/6 hp, Refrigeration, Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Singapore Compressor, LBP

Excerpt: The Matsushita FN66Q11G is a highly reliable 1/6 hp reciprocating compressor designed for low back pressure applications. Operating on 220-240V at 50Hz, this R12-based unit was manufactured in Singapore and is known for its long-lasting performance in domestic refrigerators. Learn about its cooling capacity, amperage, and modern replacement options in this comprehensive technical guide.

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