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What is vz0 in Zener diode?
The Zener Voltage, VZ, of a zener diode is the breakdown voltage of a zener diode when it is connected in reverse-biased in a circuit. Therefore, the 12-volt power supply drops 5.1V and the voltage across the zener remains constant at this voltage.
How does Zener diode calculate Izm?
IZM is the maximum current that can flow through the zener diode, PZM is the maximum power that the zener diode can handle, and VZ is the zener voltage. So if a zener diode has a zener voltage of 5.1V and a power rating of 1W, it can handle 1W/5.1V ma, which is approximately 196mA of current.
What is the maximum rated Zener current?
Zener diode specifications Voltage Vz: The Zener voltage refers to the reverse breakdown voltage—2.4 V to about 200 V; can go up to 1 kV while the maximum for the surface-mounted device (SMD) is about 47 V). Current Iz (max.): Maximum current at the rated Zener voltage Vz—200 uA to 200 A).
What is the breakdown voltage of a Zener diode?
Vz0 is the voltage at which the straight-line approximation of the I-V characteristic intersects the horizontal axis. After reaching a certain voltage, called the breakdown voltage, the current increases widely even for a small change in voltage. However, there is no appreciable change in voltage.
What are the characteristics of a bzy88 Zener diode?
Typical BZY88 Zener Diode Characteristics / Specifications Characteristic Typical Value Unit Details DC Power dissipation 400 mW @ Tl = 50°C: de-rate above 50°C 3.2 mW / Junction temperature -65 to +175 °C Voltage Vz @ 5mA 4.8 min 5.1 typ 5.4 max V Zzt @5mA 76 Ohms
What are the voltage tolerances for a diode?
Voltage tolerance: With diodes being marked and sorted to meet the E12 or E24 value ranges, typical tolerance specifications for the diode are ±5%. Some datasheets may specify the voltage as a typical voltage and then provide a maximum and minimum.
How to calculate the voltage of a V0 diode?
V0 is 12V – 21mA * 9 ohms or 11.81V. So from your formula Vz’ = 11.81 + 9 Ω ⋅ I Z . At 21ma, we’d have 12V, as it should be. Note that this linearized model will be horribly wrong if you go too far from the operating point. The value of Zzt for 0.25mA is 700 ohms, almost two orders of magnitude higher.