USB50803/TR7 Circuit Protection

TVS - Diodes

Transient voltage suppressors (TVS) diodes are an important type of protection device that is used to protect semiconductors and other equipment from harmful electrical transient over-voltage events. TVS diodes are designed to absorb the excess energy and reduce the voltage back to a safe operating level. The USB50803/TR7 is a unidirectional high frequency transient voltage suppressor (TVS) diode which is designed to protect against electrical transients resulting from lightning strikes, inductive loads, and electrostatic discharges. This article will explain the application fields and working principles of the USB50803/TR7.

Applications

The USB50803/TR7 is a versatile and robust device that can be used in a wide variety of applications. The device is typically utilized in telecommunications, automotive, consumer electronics, industrial, and military applications. These applications often require a high degree of immunity from ESD (electrostatic discharges) and electrical transients caused by lightning, inductive loads, and electrostatic discharges. The device is rated for a surge pulse of 8/20μs waveform with a peak power rating of 400W (10/1000μs waveform) and a clamping voltage of 45V.

The device is designed to be highly reliable. It contains a soft recovery feature which prevents reverse recovery spikes, and it has a low capacitance which ensures fast response and minimized propagation delay. The USB50803/TR7 also includes surge current protection in order to protect sensitive components in the event of a surge overload.

Working Principle

The USB50803/TR7 functions by suppressing transients by clamping the voltage to a safe level. When an over-voltage event occurs, the device will absorb the excess energy and reduce the voltage back to a safe operating level. The device is unidirectional, which means that it will only activate during an over-voltage event, and not during a low voltage or under-voltage event.

The device has a low capacitance which allows for fast response times. Additionally, the surge voltage and current specifications are such that the device is capable of withstanding and suppressing transient voltages and currents up to 400 W peak power (10/1000μs). The device also contains a soft recovery feature, which prevents reverse recovery spikes.

Conclusion

The USB50803/TR7 is a versatile and reliable unidirectional high frequency transient voltage suppressor (TVS) diode. It is designed to absorb excess voltage and reduce it back to a safe operating level in order to protect sensitive components from the effects of electrical transients, ESD, lightning, and inductive loads. The USB50803/TR7 is suitable for a wide array of applications, including telecommunications, automotive, consumer electronics, industrial, and military. The device’s low capacitance and surge current protection ensure fast response times and reliable protection.