1N4728, 1N4729, 1N4730, 1N4731, 1N4732, 1N4733, 1N4734, 1N4735, 1N4736, 1N4737, Zener diode
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1N4728 to 1N4737 Zener Diode Voltages 3.3V-7.5V (47 characters)
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1N4728A-1N4737A Zener Diodes Voltages Chart | Mbsmpro.com 3.3V to 7.5V 1W
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Discover precise Zener voltages for 1N4728 (3.3V) to 1N4737 (7.5V) diodes. Full specs, comparisons, and datasheets for voltage regulation. Essential guide from Mbsmpro.com for electronics pros. (148 characters)
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1N4728, 1N4729, 1N4730, 1N4731, 1N4732, 1N4733, 1N4734, 1N4735, 1N4736, 1N4737, Zener diode, voltage reference, 1W Zener, DO-41 package, electronics components, voltage regulator, Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm
Excerpt (first 55 words)
Zener diodes like the 1N4728A thru 1N4737A series deliver reliable voltage regulation from 3.3V to 7.5V at 1W power. Engineers rely on these for stabilizing circuits in power supplies and protection setups. Check the full voltage chart and specs below for your next project. (55 words)
1N4728A to 1N4737A Zener Diodes: Voltages, Specs & Comparisons | Mbsmpro.com
Technicians and engineers turn to the 1N47xxA series Zener diodes for precise voltage clamping in everything from power supplies to signal protection. These 1-watt components handle breakdowns from 3.3 volts up to 7.5 volts, making them staples in low-voltage regulation tasks. Built in the rugged DO-41 glass package, they withstand industrial demands while keeping costs down
Complete Voltage Chart
This table lists the nominal Zener voltages straight from manufacturer specs, matching common references for quick selection. Tolerance stays at ±5% across the board.
| Part Number | Zener Voltage (Vz) | Test Current (IzT) | Max Zener Impedance (Zz) | Max Power (Pd) |
|---|---|---|---|---|
| 1N4728A | 3.3V | 76 mA | 10 Ω | 1W |
| 1N4729A | 3.6V | 69 mA | 10 Ω | 1W |
| 1N4730A | 3.9V | 64 mA | 9 Ω | 1W |
| 1N4731A | 4.3V | 58 mA | 9 Ω | 1W |
| 1N4732A | 4.7V | 53 mA | 9 Ω | 1W |
| 1N4733A | 5.1V | 49 mA | 9 Ω | 1W |
| 1N4734A | 5.6V | 45 mA | 9 Ω | 1W |
| 1N4735A | 6.2V | 41 mA | 10 Ω | 1W |
| 1N4736A | 6.8V | 37 mA | 10 Ω | 1W |
| 1N4737A | 7.5V | 34 mA | 15 Ω | 1W |
Key Specifications Breakdown
All models share a 1-watt power dissipation at 50°C ambient, forward voltage under 1.2V at 200mA, and operation up to 200°C junction temperature. Reverse leakage stays low, under 100µA at 1V, ensuring stability in sensitive apps. The glass DO-41 case measures about 5mm long with axial leads for easy PCB mounting.
Comparisons with 0.5W Series
Higher power like these 1N47xxA diodes beats smaller 0.5W options such as 1N52xxB for demanding loads—think 1W vs. half that capacity without heatsinking. For instance, 1N5231B (5.1V 0.5W) leaks more under heat and derates faster above 75°C. Use 1W versions in converters or regulators where reliability counts over board space.
| Feature | 1N47xxA (1W) | 1N52xxB (0.5W) |
|---|---|---|
| Power Rating | 1W @ 50°C | 0.5W @ 75°C |
| Package | DO-41 | DO-35 (smaller) |
| Vz Example 5.1V | 1N4733A, 49mA Iz | 1N5231B, 20mA Iz |
| Max Temp | 200°C | 200°C |
| Best For | High-current regulation | Low-power signals |
Value Comparisons Across Voltages
Lower voltages like 1N4728A 3.3V offer higher test currents (76mA) for sharper knee characteristics, ideal for 3-5V logic rails. Higher ones like 1N4737A 7.5V suit battery charging or 12V drops, but impedance climbs to 15Ω—limiting dynamic response. Prices hover at $0.05-$0.15 per unit in bulk, with 5.1V (1N4733A) most common for USB/5V apps.
| Voltage Range | Example Part | IzT (mA) | Zz (Ω) | Bulk Price (est.) |
|---|---|---|---|---|
| 3.3-4.3V | 1N4728A-1N4731A | 58-76 | 9-10 | $0.05 |
| 4.7-5.6V | 1N4732A-1N4734A | 45-53 | 9 | $0.07 |
| 6.2-7.5V | 1N4735A-1N4737A | 34-41 | 10-15 | $0.10 |
Grab datasheets for full curves and stock these at Mbsmpro.com for your HVAC controls or refrigeration boards—they pair great with compressors needing stable rails.