MAP4KE27AE3

TVS – Diodes

Transient Voltage Suppressor (TVS) diodes are special wide band-gap diodes that are intended to protect sensitive electrical and electronic circuits from damage caused by transient overvoltage (spikes above the specified maximum voltage rating). The MAP4KE27AE3 is a bidirectional transient voltage suppressor with a 30V maximum operating voltage and a 250uA reverse breakdown current.

Application Field

The MAP4KE27AE3 is ideal for a wide array of applications that require transient voltage protection. It can be used as protection from electrical noise, transients caused by electromagnetic interference (EMI), transients induced by electrostatic discharges (ESD), or overvoltage that may be caused by lightning or power cross. This TVS diode is widely used in consumer electronics, telecommunications and automotive equipment.

Working Principle

The MAP4KE27AE3 works to protect circuits from voltage spikes and transients in the following manner: The TVS diode is connected directly between the power source and power rail, or power trace, that is being protected. When a voltage transient passes through the diode, the diode attacks it by clamping and diverting it to the ground. This will result in the voltage across the device rising to its rated maximum static breakdown voltage levels and the current through the diode heightening proportionally. Thus, the diode is able to absorb the energy of the transient and protect the circuit from any possible damage. When the transient exceeds the rated voltage of the diode, the transient will pass through via a breakdown mechanism. This has to be taken into consideration when selecting an appropriate TVS device.

Conclusion

The MAP4KE27AE3 is a widely-used bidirectional TVS diode that is intended to protect sensitive electronic circuits from damage caused by transient overvoltage. It can be used in consumer electronics, telecommunications and automotive equipment, and works by clamping and diverting voltage transients to the ground. This diode is capable of clamping voltage and dissipating energy to protect circuits, but it is important to select an appropriate device with the right voltage rating.