1.5KE30A-TP Circuit Protection

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TVS - Diodes

A Transient Voltage Suppressor (TVS) diode, sometimes known as a surge-protective diode, is a form of unidirectional breakdown diode designed to protect electronic equipment from voltage levels that exceed either the normal operating voltage designated as the breakdown voltage (BV) or the maximum allowable voltage that the circuit can withstand before failure.

One example of a TVS diode is the 1.5KE30A-TP. It has a voltage standoff of 30V, a working voltage of 24V, a peak pulse current of 42A, and a power dissipation of 200W. This diode also has a typical clamp voltage of 39V and an operating temperature between -55°C to 150°C.

Application Field

The 1.5KE30A-TP TVS diode is mostly used in automotive electronics, industrial devices, telecom equipment, power supplies, and other high-voltage surge protection applications. It has a variety of features such as protection from overvoltage and transients, low leakage current, and reverse avalanche protection.

Working Principle

When a transient pulse exceeds the specified breakdown voltage of the TVS diode, the diode enters into avalanche mode and conducts a high current. This current is known as a clamping current and it limits the excess transient pulse, thereby protecting the electronic equipment from damage. Since TVS diodes are unidirectional, they are able to protect the device from both positive and negative voltage transients.

The 1.5KE30A-TP TVS diode is made with a Zener diode in a series with a resistor. The resistor limits the peak current, and the Zener diode is designed to conduct current when the excess voltages exceed the breakdown voltage. This combination of a Zener diode and resistor is able to provide a low clamping voltage and instantaneous response time.

The 1.5KE30A-TP is a reputable and cost-effective surge protection diode, and it can handle high energy pulses with its low capacitance. It is also highly reliable due to its ability to recover quickly from the peak pulse current and its robust construction.

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