1.5KA43AHE3/73

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Transient voltage surge suppressors or TVS diodes are one of the most reliable and efficient devices used to protect electronic systems and circuits from transients voltages. The 1.5KA43AHE3/73 is an axial leaded Transient Voltage Suppressor diode that is mainly designed to protect circuits from overvoltage events, such as electrostatic discharge, electrical fast transients, and lightning-induced surges.

Design and Construction

The 1.5KA43AHE3/73 is an axial leaded Transient Voltage Suppressor diode that is designed to help protect sensitive equipment from voltage spikes that can cause damage or power outages. The device is made of an anode and a cathode, with a sacrificial metal oxide layer between them. This layer acts as a voltage clamp and prevents excessive current flow that could potentially cause damage. The body is composed of an epoxy material that contains a zinc oxide chip, which is the TVS component. The epoxy body also serves to provide physical insulation to the device as well as environmental protection against temperature and humidity.

Application Field

The 1.5KA43AHE3/73 can be used in a wide range of consumer and industrial applications. It is primarily used to protect against overvoltage events caused by ESD, electrical fast transients and lightning-induced surges. It can also be used to protect sensitive electronic components such as automotive sensors, motor controllers and other applications that require protection from voltage transients.

Working Principle

The 1.5KA43AHE3/73 operates by shunting current away from the protected device during an overvoltage event. When the voltage reaches a certain level, the chip in the epoxy body begins to conduct current. This creates a short circuit between the anode and the cathode, which limits the voltage reaching the protected device and largely prevents the occurrence of damage. After the overvoltage event is over, the chip returns to its non-conductive state.

Conclusion

The 1.5KA43AHE3/73 is a reliable TVS diode designed to protect sensitive devices and circuits from overvoltage events. Its use of an anode and cathode, a metal oxide layer, and an epoxy body all enable it to protect against transients relatively quickly and effectively. It has a wide range of applicable uses, and is a cost-effective solution for overvoltage protection.

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