SMDJ85A-HRAT7 Circuit Protection

TVS diodes, or transient voltage suppressors, are a type of voltage-regulating device used to protect electronic systems from unexpected spikes in voltage. The SMDJ85A-HRAT7 is a Bi-Directional, unidirectional, and bidirectional TVS diode specifically designed to prevent surges, spikes, and transients from damaging or disrupting sensitive electronic components. The SMDJ85A-HRAT7 also features excellent thermal stability and high power capability.

The SMDJ85A-HRAT7 is most commonly used in automotive applications such as in-vehicle charging systems, which must remain operational even when experiencing power spikes or surges. The device also finds use in other applications where EMI/EMC protection is desired but space requirements preclude the use of traditional components. Additionally, the device offers protection against voltage spikes due to static electricity.

The main working principle behind the SMDJ85A-HRAT7 is its pulsed avalanche breakdown characteristic. This characteristic is a combination of high peak pulse current of up to 47A and high peak power of up to 1.3 kW. The device has a peak pulse power rating of up to 45V, which allows it to dissipate transients and reduce peak voltages to well below the maximum rating of the associated equipment. Additionally, the SMDJ85A-HRAT7 has a low clamping voltage capability, allowing it to reduce the impact of over-voltage conditions.

The SMDJ85A-HRAT7 has a reverse stand-off voltage of 85V, making it suitable for protecting against over-voltage conditions in a wide range of automotive applications. The device also provides excellent electrical performance due to its high surge current capability and low leakage current, which allows for efficient current flow during normal operation. Finally, the device has a robust plastic package with a base-mounted SMA connector, which provides a secure and reliable connection with other equipment.

The SMDJ85A-HRAT7 is a versatile and robust device designed to provide reliable and effective protection against voltage transients in a wide range of applications. Its compact size, high surge current capability, low leakage current, and excellent electrical performance make it an ideal choice for protecting automotive electronics from unexpected voltage spikes. Additionally, the device’s pulsed avalanche breakdown characteristic provides reliable protection against static electricity and other over-voltage conditions.