15KPA90CA

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TVS - Diodes, otherwise known as Transient Voltage Suppressors (or TSS devices) are used in many industries to protect integrated circuits from high voltage transients. The 15KPA90CA is a popular device from the TVS family which is used to protect circuits from destructive voltage transients. This article explores the application field and working principle of this device.

Application Field

The 15KPA90CA is an integrated TVS device specifically designed for high frequency, high voltage transients. It is commonly used in circuits where transient current must be controlled and dissipated without high failure rates. This makes it ideal for use in automotive, telecommunications, and consumer electronics. It can be found in all kinds of electronic systems ranging from cell phones, computers, and automotive engine control units to specialized medical equipment.

The device is also suitable for use in data lines and communication ports under high electrical stress. Its superior protection capabilities make it well-suited for use in high-speed, high-voltage applications, such as USB 3.0/USB Type-C ports. It supports data rates up to 12 Mbps per port. This makes it a valuable asset in reliably protecting core electronics from destructive current transients.

Working Principle

The 15KPA90CA is a Unidirectional device, meaning it only works in one direction. When overvoltage pulses such as electrostatic discharges or power transients hit the TVS device, it will absorb and dissipate the current transient in its designed breakdown voltage and clamping voltage, which reduces the voltage going to the protected circuit. This prevents voltage transients from damaging the electronic components.

The device is designed with power metal oxides (MOV) which can absorb a large surge when subjected to a transient pulse. A surge is a large amount of energy which is spread over a short period of time. When the device absorbs this transient pulse, it dissipates the energy and helps to prevent connections from arcing or sparking. This prevents the creation of electrical noise that can disrupt other circuits.

The 15KPA90CA also includes a zener diode for additional clamping, which will clamp transients above the breakdown voltage to prevent any additional damage to circuits. This provides more protection to connected electronic components.

Conclusion

The 15KPA90CA is a TVS device designed specifically for high frequency, high voltage transients. It is suitable for use in a wide range of applications. It works by absorbing positive and negative transients and dissipating them without damaging the protected circuit. It also includes a zener diode to provide additional protection from high voltage spikes, which further enhances the protection level of connected components.

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