Z4KE120A-E3/54

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The Z4KE120A-E3/54 is a single Zener diode that is produced by ON Semiconductor. It is classed as a high-current, low-impedance diode. The diode has an absolute maximum power dissipation rating of 5 watts, a maximum steady state power dissipation rating at Tamb = 25 °C of 2 watts, an operating junction temperature of 150 °C, and a non-repetitive peak reverse power dissipation of 10 watts. The Z4KE120A-E3/54 is suitable for general purpose applications including voltage regulation, transient suppression, pre-biasing and thyristor (triac) driving.

The Z4KE120A-E3/54 is a silicon explosion-proof diode designed for use in high-current, high-voltage applications. The diode features an active area of 0.13 x 0.20mm2 and an effective series resistance (ESR) of 0.002 ohms. The Z4KE120A-E3/54 has an encapsulated glass body with an electrically insulated lead frame and an extra thick gold lacquer coating. The diode is rated for an ambient temperature range of -55 to +175 °C.

The Z4KE120A-E3/54 features a reverse breakdown voltage of 4.2V and a peak reverse current rating of 12mA. The diode has a maximum reverse current rating of 2mA, a maximum average forward current rating of 40mA, and a leakage current of 20µA at a voltage of 8.4V. The Z4KE120A-E3/54 has a forward voltage drop of 2V and a surge current of 200A.

The Z4KE120A-E3/54 operates with a working principle that is designed to protect circuits from transients and overvoltage. The diode acts as a voltage-controlled switch in the circuit, and is typically reverse biased. As the voltage across the diode increases, a Zener breakdown is induced, allowing current to flow. This current prevents further voltage fluctuations, allowing the circuit to remain constant.

The Z4KE120A-E3/54 is primarily used in high-current applications such as automotive, industrial and telecom. The diode is also used in linear power supplies, AC power controllers, DC-DC converters, RF filters and bridges, and PFC circuits. The Z4KE120A-E3/54 is widely used in a variety of applications because it is capable of withstanding high reverse pulse currents, high surge currents, and has a low forward voltage drop.

In summary, the Z4KE120A-E3/54 is a high-current, low-impedance single Zener diode designed for general purpose use in automotive, industrial, and telecom applications. The diode offers protection from transients, voltage fluctuations, and high surge currents. The diode operates with a working principle that is designed to keep the circuit at a constant voltage.

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