Aluminum shell PTC heater

A composite PTC thermistor utilizes a thermally coupled combination, closely fitting and encapsulating a VDR varistor and a PTC thermistor. It is primarily used in switching power supplies and transformer primary circuits in power meters and other power supplies, providing comprehensive current and voltage protection.

Plastic-encapsulated chip PTC thermistors are positive temperature coefficient thermistors (PTCs) packaged in surface mount technology (SMD) packaging. They are widely used in circuit protection, temperature sensing, and miniaturized electronic device designs.

PTC thermistors are used in electronic ballasts and energy-saving lamps as preheating and soft-start devices. They can significantly increase the number of cycles and lifespan of lamps. “YAXUN” has dedicated over ten years to the research and production of preheating and soft-start PTC thermistors, accumulating extensive experience. Adhering to the business philosophy of “Integrity as the Foundation, Innovation as the Priority,” we provide customers with stable and reliable products, earning the trust of our customers. Our thermistors are used by world-renowned electric lighting companies such as Philips, GE (China), IKEA, Megaman, Osram (China), and TCL. With annual production and sales exceeding 100 million units, we hold a leading market share among our peers both domestically and internationally.

PTC thermistors are widely used in RS232/RS485 communication interface protection. They primarily provide dual protection against overcurrent and overvoltage, while also possessing self-recovery properties.