1.5SMC130A-E3/9AT

TVS (Transient Voltage Suppressors) Diodes are frequently used in power circuits, data storage and communication systems, and consumer electronics where reliable and fast protection against damaging voltage transients is needed. The role of TVS diodes is to provide a shunt path for the large surge current when a voltage transient occurs in order to limit the voltage to a level that will not damage sensitive components. The 1.5SMC130A-E3/9AT is a popular TVS diode for applications that require both uni-directional protection and high pulse power and peak power handling capabilities.

Application Field of 1.5SMC130A-E3/9AT

The 1.5SMC130A-E3/9AT is designed for applications with an operating voltage above 32V, and can be used to protect against normal transient load disturbances or very fast short duration transients. The device has a peak pulse power rating of 1.5kW (10/1000us pulse), with a maximum clamping voltage of 57V. As such, it is applicable for use in high voltage DC/AC power circuits, UPS systems, DC/DC converters, telecom hardware, and voltage regulator modules. It can also be used to protect against high-voltage transients in areas with high levels of lightning and electrostatic discharge (ESD). The diode is available in multiple package options, including the common DO-214AA (SMC) and an enhanced-power DO-214AB (SMCJ) for applications requiring higher energy handling capability.

Working Principle of 1.5SMC130A-E3/9AT

When a surge or transient event occurs, the 1.5SMC130A-E3/9AT diverts the surge current away from the protected circuit, reducing the risk of damage. As with most TVS diodes, the 1.5SMC130A-E3/9AT has an inherently low direct voltage drop, and its low on-state resistance minimizes power losses and self-heating. The diode is constructed with a specially designed “zener diode element”, which is capable of suppressing transients up to the specified peak pulse power without sustaining damage. The diode is also designed with a fast response time, minimizing the time spent in a high-voltage environment and thereby reducing the risk of damage to sensitive components.

The 1.5SMC130A-E3/9AT is also designed to work in parallel with existing power supply elements, providing an additional layer of protection even during non-transient events. If a transient event does occur, the 1.5SMC130A-E3/9AT is able to shunt the surge current away from the protected circuit while the normal elemets of the power supply are able to recover or continue functioning normally. This is in contrast to “single-event” protection devices, which cannot conduct the surge current until they themselves sustain terminal damage.

Conclusion

The 1.5SMC130A-E3/9AT is a versatile and reliable TVS diode for applications requiring robust protection against voltage transients and ESD. It can provide protection against both slow and fast transients, and its fast response time ensures that sensitive equipment remains operational even in the event of a transient occurrence. The device is also designed to work in parallel with existing power supply elements, providing an extra layer of safety during non-transient events. For these reasons, this diode is a popular choice for high voltage power systems and other sensitive electronics.