NTCD Thermistors TDK NTCD Thermistors are AEC-Q200 qualified and offer a 50MΩ insulation resistance rating. The glass-encapsulated axial lead structure provides strong resistance in high-humidity and high-temperature environments. The NTCD series features a ±3% tolerance rating and 2kΩ to 100kΩ resistance range. TDK NTCD Thermistors are ideal for temperature detection in various applications, including air conditioners, motors, and automobile intake/exhaust temperatures.