POSISTOR® PTC Thermistors

Murata POSISTOR® Positive Temperature Coefficient (PTC) Thermistors are ideal for circuit protection in a variety of applications, such as temperature sensor and temperature compensation. These devices are also suitable for current control in common household appliances, humidifiers, dryers of all kinds, refrigerators, freezers, and air conditioners. In a conventional NTC thermistor, the resistance decreases when the temperature increases, but for the Murata PTC thermistors, the resistance rises sharply when their temperature exceeds a specific temperature.

Results: 63
Select Image Part # Mfr. Description Datasheet Availability Pricing (JPY) Filter the results in the table by unit price based on your quantity. Qty. RoHS ECAD Model Series Resistance Tolerance Mounting Style Termination Style Minimum Operating Temperature Maximum Operating Temperature Qualification Packaging
Murata Electronics PTC Thermistors 9,889In Stock
Min.: 1
Mult.: 1
: 10,000

PRF 1 kOhms 50 % PCB Mount SMD/SMT - 40 C + 150 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 12,269In Stock
Min.: 1
Mult.: 1
: 10,000

PRF 1 kOhms 50 % PCB Mount SMD/SMT - 40 C + 130 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 470 OHM 50% SMD 0603 132In Stock
16,000On Order
Min.: 1
Mult.: 1
: 4,000

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 160 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 2,690In Stock
Min.: 1
Mult.: 1
: 4,000

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 160 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 470 OHM 50% SMD 0603 96In Stock
4,000Expected 11/18/2026
Min.: 1
Mult.: 1
: 4,000

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 140 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 3,034In Stock
Min.: 1
Mult.: 1
: 4,000

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 140 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 470 OHM 50% SMD 0603 5,550In Stock
4,000Expected 9/22/2026
Min.: 1
Mult.: 1
: 4,000

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 130 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 470 OHM 50% SMD 0603 3,481In Stock
Min.: 1
Mult.: 1
: 4,000

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 130 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 470 OHM 50% SMD 0603 11,973In Stock
Min.: 1
Mult.: 1
: 4,000

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 120 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 4,401In Stock
Min.: 1
Mult.: 1
: 4,000

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 120 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 470 OHM 50% SMD 0603 4,948In Stock
4,000Expected 10/26/2026
Min.: 1
Mult.: 1
: 4,000

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 100 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 3,742In Stock
Min.: 1
Mult.: 1
: 4,000

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 100 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 470 OHM 50% SMD 0603 6,493In Stock
56,000On Order
Min.: 1
Mult.: 1
: 4,000

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 90 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 470 OHM 50% SMD 0805 1,430In Stock
Min.: 1
Mult.: 1
: 4,000

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 130 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 1,018In Stock
Min.: 1
Mult.: 1
: 4,000

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 110 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 100 OHM 20% SMD 0603 2,638In Stock
Min.: 1
Mult.: 1
: 4,000

PRG18-MS1RB 100 Ohms 20 % PCB Mount SMD/SMT - 40 C + 75 C AEC-Q100 Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 220 OHM 20% SMD 0603 2,624In Stock
56,000Expected 10/8/2026
Min.: 1
Mult.: 1
: 4,000

PRG18-MB1RB 220 Ohms 20 % PCB Mount SMD/SMT - 20 C + 75 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 22 OHM 20% SMD 0805 6,644In Stock
Min.: 1
Mult.: 1
: 3,000

PRG21-MS1RK 22 Ohms 20 % PCB Mount SMD/SMT - 40 C + 105 C AEC-Q100 Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 42 OHM 20% SMD 0805 2,096In Stock
4,000Expected 8/10/2026
Min.: 1
Mult.: 1
: 4,000

PRG21-MB1RA 42 Ohms 20 % PCB Mount SMD/SMT - 10 C + 60 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 42 OHM 20% SMD 0805 1,242In Stock
Min.: 1
Mult.: 1
: 4,000

PRG21-MS1RA 42 Ohms 20 % PCB Mount SMD/SMT - 40 C + 105 C AEC-Q100 Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 22 OHM 20% SMD 0805 402In Stock
12,000On Order
Min.: 1
Mult.: 1
: 3,000

PRG21-MB1RK 22 Ohms 20 % PCB Mount SMD/SMT - 10 C + 60 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 0.6 OHM 20% SMD 0805 3,870In Stock
Min.: 1
Mult.: 1
: 4,000

PRG21-MM1RA 600 mOhms 20 % PCB Mount SMD/SMT - 20 C + 85 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 1 OHM 20% SMD 0805 4,859In Stock
Min.: 1
Mult.: 1
: 4,000

PRG21-MM1RA 1 Ohms 20 % PCB Mount SMD/SMT - 20 C + 85 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 2.2 OHM 20% SMD 0805 1,258In Stock
4,000Expected 9/25/2026
Min.: 1
Mult.: 1
: 4,000

PRG21-MM1RA 2.2 Ohms 20 % PCB Mount SMD/SMT - 20 C + 85 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 4,439In Stock
Min.: 1
Mult.: 1
: 4,000

PRG21-MM1RA 3.3 Ohms 20 % PCB Mount SMD/SMT - 20 C + 85 C Reel, Cut Tape, MouseReel