SMAJ160AHE3/5A

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TVS (Transient Voltage Suppressor) diodes, also referred to as surge protector diodes, are most often used in power supply design to provide protection against over-voltage and transient surge conditions. The SMAJ160AHE3/5A is a TVS diode suitable for a variety of application areas due to its ability to absorb high voltage surges in a reliable fashion.

The SMAJ160AHE3/5A has an IEC 61000-4-2 level 4 (15 kV contact/air discharge) ESD Rating, and is able to meet the needs of a variety of applications, including but not limited to consumer electronic, medical device, and automotive Electronics. Furthermore, the SMAJ160AHE3/5A boasts an excellent Maximum Stand-Off Voltage (VWM / 8/20 µs) of 160 VDC, making it suitable for applications requiring a broad range of voltage pulse protection profiles.

The SMAJ160AHE3/5A is a bidirectional TVS diode and consists of two terminal devices, rated for unidirectional or bidirectional transient voltage protection. The device incorporates a pair of Zener diodes to absorb and clamp any voltage that may exceed the breakdown voltage. The diodes are connected in an inverse parallel protection configuration, which allows for the device to absorb uni- or bi-directional surge pulse events of up to 800 amps. In normal operation, the SMAJ160AHE3/5A is reverse biased and no current will flow. Under transient conditions, however, the voltage passing through the device will reach the breakdown voltage of the Zener diodes and trigger the diode into the conduction state. This will cause the current to increase, as the device will allow for the passage of the current, thereby providing the protection required of a transient voltage suppressor.

Once the transient voltage event is reduced to a safe level, the diode will reverse bias again and the current will drop to a low level, allowing the device to return to a non-conducting state. The SMAJ160AHE3/5A is specifically designed to withstand multiple protection events per milisecond without being permanently damaged, meaning it remains reliable even in event-driven application areas.

In conclusion, the SMAJ160AHE3/5A is an optimal choice for TVS diode applications, as it offers excellent protection against over-voltages and transients, boasts a high Maximum Stand-Off Voltage (VWM / 8/20 µs) of 160 VDC, and is designed to provide reliable protection even in high-traffic application fields.

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