MMBZ5265C-HE3-18 vs 1N4757A
| Part Number |
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| Category | Diodes - Zener - Single | Diodes - Zener - Single |
| Manufacturer | Vishay Semiconductor - Diodes Division | Rectron USA |
| Description | DIODE ZENER 62V 225MW SOT23-3 | DIODE ZENER 51 V 1W DO-41G |
| Package | Tape & Reel (TR) | Tape & Reel (TR) |
| Series | Automotive, AEC-Q101 | - |
| Operating Temperature | -55°C ~ 150°C | - |
| Mounting Type | Surface Mount | Through Hole |
| Package / Case | TO-236-3, SC-59, SOT-23-3 | DO-204AL, DO-41, Axial |
| Supplier Device Package | SOT-23-3 | DO-41G |
| Tolerance | ±2% | ±5% |
| Power - Max | 225 mW | 1 W |
| Voltage - Forward (Vf) (Max) @ If | - | 1 V @ 100 mA |
| Current - Reverse Leakage @ Vr | 100 nA @ 47 V | 5 µA @ 38.8 V |
| Voltage - Zener (Nom) (Vz) | 62 V | 51 V |
| Impedance (Max) (Zzt) | 185 Ohms | 95 Ohms |
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1. What is the difference between a Zener diode and a Schottky diode?
Schottky diodes have a low forward voltage drop and fast switching speed, making them suitable for high-frequency applications. In contrast, Zener diodes are mainly used for voltage regulation and voltage stabilization.
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2. Where are Zener diodes used in real life?
Applied to power adapters, overvoltage protection in electronic devices, LED drive circuits, etc.
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3. What happens if a Zener diode is connected in reverse?
When a Zener diode is properly connected in reverse and a sufficient reverse voltage is applied to exceed its Zener voltage, it will begin to conduct and remain at a relatively constant voltage level.
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4. What happens when a Zener diode fails?
If it is overheated or subjected to excessive current, it may cause permanent damage, which will appear as an open or short circuit state.
