The TCTR0805F100KF4000T with NTC Thermistors 0805 RoHS is a type of resistor designed and manufactured by ResistorToday. This particular resistor is a 0805 RoHS-certified Thermal Sensitive Resistor, also known as a Negative Temperature Coefficient (NTC) thermistor. It has a resistance value of 100KO and is suitable for 0.4V sintered NTC Thermistors. It is designed for surface mounting and includes terminals spaced 0.08mm apart. This thermistor is also RoHS-certified, meaning that it does not contain or use hazardous chemicals or materials in its construction. It is an ideal choice for providing electronics with a reliable level of temperature-resistant protection.