1.5SMCJ90A is a Bidirectional Transient Voltage Suppressor (TVS) Diode made by the company Diotec. It offers a unidirectional protection against transients and a reverse standoff voltage of 90 volts. It’s lead free, RoHS compliant, and halogen free and comes in a 2-pin SMA (DO-214AC) package. It also has a clamping voltage of 74 volts, peak pulse power of 900 W, holding current of 50 mA, surge forward current of 1.5 Amps, and working frequency of 1 to 100 MHz. This device is ideal for protecting your electronic equipment from transients, power glitches, and other destructive voltages.