www.DataSheet4U.com PolySwitchâ„¢ Resettable Device Short Form Catalog MAY 2005 www.circuitprotection.com www.DataSheet4U.com For over 20 years, Raychem Circuit Protection, a unit of Tyco Electronics, has pioneered the technology behind PolySwitchâ„¢ PPTC (Polymeric Positive Temperature Coefficient) devices.
The use of PPTC devices as a variable resistor in circuit protection applications was first pioneered by Raychem several decades ago.
They were first used to help protect nickel-cadmium batt