The QN0603X103J3450FB with NTC thermistors is a 0603-sized, RoHS-compliant electronic component manufactured by QAMcn. It is a negative temperature coefficient (NTC) thermistor, which is designed to detect and respond to changes in temperature. The thermistor has an 0603-sized form factor, meaning it is only 0.060 inches in size. The device is made with metal oxide, ceramic, or polymer-based materials and is protected by a heat-resistant epoxy coating. Its resistance changes when exposed to different temperatures, making it an ideal choice for temperature detection and control applications. It also features a high thermal stability and a wide range of operational temperatures, making it well suited for use in medical, consumer, and industrial instrumentation and home appliances.