MMBZ5265C-HE3-18 vs MMBZ5264C-HE3-18
| Part Number |
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| Category | Diodes - Zener - Single | Diodes - Zener - Single |
| Manufacturer | Vishay Semiconductor - Diodes Division | Vishay Semiconductor - Diodes Division |
| Description | DIODE ZENER 62V 225MW SOT23-3 | DIODE ZENER 60V 225MW SOT23-3 |
| Package | Tape & Reel (TR) | Tape & Reel (TR) |
| Series | Automotive, AEC-Q101 | Automotive, AEC-Q101 |
| Operating Temperature | -55°C ~ 150°C | -55°C ~ 150°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 |
| Supplier Device Package | SOT-23-3 | SOT-23-3 |
| Tolerance | ±2% | ±2% |
| Power - Max | 225 mW | 225 mW |
| Voltage - Forward (Vf) (Max) @ If | - | - |
| Current - Reverse Leakage @ Vr | 100 nA @ 47 V | 100 nA @ 46 V |
| Voltage - Zener (Nom) (Vz) | 62 V | 60 V |
| Impedance (Max) (Zzt) | 185 Ohms | 170 Ohms |
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1. What is the difference between a diode and a Zener diode?
While a normal diode is mainly used for unidirectional current flow, a Zener diode is designed to provide a stable voltage reference point when reverse biased. A normal diode conducts when forward biased and does not conduct or has only a small leakage current when reverse biased; a Zener diode can start conducting after reaching a specific reverse voltage (called the Zener voltage).
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2. Are Zener diodes unidirectional?
In normal operation mode, Zener diodes do exhibit unidirectional conductivity, but they start conducting when reverse biased to their Zener voltage.
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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.
