Most industries need some form of coordinated hybrid overvoltage and overcurrent protection in their products. Littelfuse offers two integrated circuit protection solutions: 2ProTM and PolyZenTM devices. The 2Pro device incorporates PolySwitch PPTC and MOV technologies in a single component, helping to provide protection in telecom industry applications. The PolyZen micro-assembly incorporates a Zener diode for precise voltage clamping and a resistively non-linear, PPTC layer that responds to either diode heating or overcurrent events by transitioning from a low to high resistance state. Both devices are resettable.