CMDZ5257B BK vs CMDZ5260B BK
| Part Number |
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| Category | Diodes - Zener - Single | Diodes - Zener - Single |
| Manufacturer | Central Semiconductor Corp | Central Semiconductor Corp |
| Description | DIODE ZENER 33V 250MW SOD323 | DIODE ZENER 43V 250MW SOD323 |
| Package | SC-76, SOD-323 | SC-76, SOD-323 |
| Series | - | - |
| Operating Temperature | -65°C ~ 150°C | -65°C ~ 150°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | SC-76, SOD-323 | SC-76, SOD-323 |
| Supplier Device Package | SOD-323 | SOD-323 |
| Tolerance | ±5% | ±5% |
| Power - Max | 250mW | 250mW |
| Voltage - Forward (Vf) (Max) @ If | 900mV @ 10mA | 900mV @ 10mA |
| Current - Reverse Leakage @ Vr | 100nA @ 25V | 100nA @ 33V |
| Voltage - Zener (Nom) (Vz) | 33V | 43V |
| Impedance (Max) (Zzt) | 58 Ohms | 93 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 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.
