SMAZ5919B-M3/5A vs CMDZ5261B BK
| Part Number |
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| Category | Diodes - Zener - Single | Diodes - Zener - Single |
| Manufacturer | Vishay Semiconductor - Diodes Division | Central Semiconductor Corp |
| Description | DIODE ZENER 5.6V 500MW DO214AC | DIODE ZENER 47V 250MW SOD323 |
| Package | Bulk | SC-76, SOD-323 |
| Series | - | - |
| Operating Temperature | -65°C ~ 150°C | -65°C ~ 150°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | DO-214AC, SMA | SC-76, SOD-323 |
| Supplier Device Package | DO-214AC (SMA) | SOD-323 |
| Tolerance | ±5% | ±5% |
| Power - Max | 500 mW | 250mW |
| Voltage - Forward (Vf) (Max) @ If | 1.5 V @ 200 mA | 900mV @ 10mA |
| Current - Reverse Leakage @ Vr | 200 µA @ 3 V | 100nA @ 36V |
| Voltage - Zener (Nom) (Vz) | 5.6 V | 47V |
| Impedance (Max) (Zzt) | 5 Ohms | 105 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. What are the disadvantages of Zener diodes?
Disadvantages include relatively high power consumption, sensitivity to temperature, and the need for proper heat dissipation.
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3. Can Zener diodes be used as rectifiers?
This is generally not recommended because they are not designed to efficiently convert AC to DC. Rectification is usually done by specialized rectifier diodes.
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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.
