The Hottech ZMM12 with Zener Diodes LL-34 RoHS is a single-circuit, voltage-regulating device that combines two Zener diodes, a voltage dropping resistor, and a capacitor, forming a complete overvoltage protection system. This electronic part is RoHS compliant—meaning it is free from lead and other hazardous substances—allowing it to be used in a variety of industrial applications as well as consumer electronics. The ZMM12 features nominal Zener voltages of 5.1V and 12V, while the Zener tolerance remains within ±5% and the power rating is 400mW. The ZMM12 has a surge current rating of 200A and an insulation resistance rating of 100M ohm. The part's dimensions are 37.3 mm x 11.5 mm x 7.7 mm, and it can operate in a temperature range from -40°C to +85°C.