1V5KE47A

TVS, or Transient Voltage Suppressors, are electrical components designed to protect circuits from high voltage or power surges. The 1V5KE47A device is a unidirectional TVS diode which is used to protect against lightning surges and ESD events. It is also used in automotive applications such as automotive DC-DC converters. This article will discuss the application field and working principle of the 1V5KE47A.

Application Field

The 1V5KE47A is a unidirectional device meaning it will only allow current to flow in one direction. This makes it ideal for applications such as automotive DC-DC converters which can only accept power in one direction. The device is also capable of protection against transient voltage surges such as those caused by lightning strikes. This makes the 1V5KE47A perfect for outdoor use in sensitive circuits such as those found in industrial automation systems or solar panels.

The device also offers some protection against electrostatic discharge (ESD) events. Since ESD events involve very high voltages very briefly, the 1V5KE47A is capable of clamping the voltage to a safe level in a short period of time.

Working Principle

The 1V5KE47A is a unidirectional TVS diode which uses the PN junction diode to protect against transient voltage surges. The PN junction diode is made up of two halves with different charge carriers, a P-type region with holes and an N-type region with electrons. When the voltage applied to the diode becomes too high, the holes and electrons will start to combine. This process creates a current flow through the diode which clamps the voltage to a safe level.

When the voltage returns to a safe level, the PN junction diode starts to reverse bias and the current stops flowing. This process of current flow and reverse bias is repeated until the voltage returns to a safe level. The 1V5KE47A has an insulation voltage of 5.5 V which makes it capable of protecting circuits against lightning strikes and ESD events.

Conclusion

The 1V5KE47A is a unidirectional TVS diode which is ideal for applications such as automotive DC-DC converters and outdoor sensitive circuits. It is capable of clamping the voltage to a safe level in the event of a transient voltage surge or ESD event. The device uses a PN junction diode to protect against high voltages and it has an insulation voltage of 5.5 V which makes it capable of protecting circuits against lightning strikes and ESD events.