CLL5247B TR vs DL5238B-TP
| Part Number |
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| Category | Diodes - Zener - Single | Diodes - Zener - Single |
| Manufacturer | Central Semiconductor Corp | Micro Commercial Co |
| Description | DIODE ZENER 17V 500MW SOD80 | DIODE ZENER 8.7V 500MW MINI MELF |
| Package | DO-213AC, MINI-MELF, SOD-80 | -Reel® |
| Series | - | - |
| Operating Temperature | -65°C ~ 200°C | -65°C ~ 175°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | DO-213AC, MINI-MELF, SOD-80 | DO-213AC, MINI-MELF, SOD-80 |
| Supplier Device Package | SOD-80 | Mini MELF |
| Tolerance | ±5% | ±5% |
| Power - Max | 500mW | 500 mW |
| Voltage - Forward (Vf) (Max) @ If | 1.25V @ 200mA | 1.1 V @ 200 mA |
| Current - Reverse Leakage @ Vr | 100nA @ 13V | 3 µA @ 6.5 V |
| Voltage - Zener (Nom) (Vz) | 17V | 8.7 V |
| Impedance (Max) (Zzt) | 19 Ohms | 8 Ohms |
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1. 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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2. How to tell if a diode is a Zener diode?
You can tell by looking at its symbol (which is slightly different from ordinary diodes), the description in the data sheet, or by testing its reverse characteristic curve. Using a multimeter, you can also measure its forward and reverse resistance values and the voltage drop under specific conditions.
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3. What are the special uses of Zener diodes?
Special uses include precision voltage references, overvoltage protection circuits, etc.
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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.
