15KPA28A-B

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Transient Voltage Suppression (TVS) diodes are specialized forms of diodes designed to protect against high-voltage transients resulting from electrostatic discharge or other electrical overstress events. The 15KPA28A-B is a TVS diode designed to protect sensitive electronics and integrated circuits (ICs) against destructive voltage transients. This article explains the application field and working principle of the 15KPA28A-B.

Application Field

The 15KPA28A-B is a diode designed for overvoltage protection and transient voltage suppression (TVS). In the event of an electrostatic discharge (ESD) or other overvoltage event, the diode will limit the voltage seen by the protected device and prevent potential damage. This device has one positive anode and one negative cathode. It is also back-to-back connected to additional 15KPA parts to protect downstream components.

The 15KPA28A-B is designed for use in computers, consumer electronics, communications and networking equipment, automotive electronics and other applications where overvoltage suppressors are necessary. The device has an operating temperature range of -55°C to +125°C and is available in the SOD-323 and SOD-123 packages. It is rated for a capacitance of 5pF and a peak pulse power of 280W.

Working Principle

The 15KPA28A-B is a TVS diode that protects sensitive electronics from high voltage transients. When a negative or positive overvoltage above the breakdown voltage of the diode occurs, the metal-oxide semiconductor field-effect transistor (MOSFET) will switch on, clamping the voltage to the breakdown voltage of diode. This redirects the transient current away from the protected device and limits the voltage seen by the protected device to the diode’s breakover voltage.

The 15KPA28A-B has a fast response time, which is critical for effective transient voltage protection. Its response time to an event is 100 nanoseconds as opposed to the typical response of an IGBT/MOSFET combination, which is 500 nanoseconds or more. This makes it ideal for applications where high-speed overvoltage protection is required.

The device is designed with a low dynamic resistance to minimize voltage overshoots and maintain good surge capability. The 15KPA28A-B has an overvoltage protection capability of up to 5V, which allows it to protect sensitive electronics from a wide variety of overvoltage events.

Conclusion

The 15KPA28A-B is a TVS diode designed for overvoltage protection and transient voltage suppression. It is suitable for use in computers, consumer electronics, automotive electronics and other applications where overvoltage suppressors are necessary. The device has a fast response time, a low dynamic resistance, and an overvoltage protection capability of up to 5V. It is rated for a capacitance of 5pF and a peak pulse power of 280W. Understanding the application field and working principle of the 15KPA28A-B is essential in order to ensure its proper usage.

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