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.

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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 470 OHM 50% SMD 0603
Datasheet
21,250In Stock
MouseReel Available
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 4.7 OHM 20% SMD 0805
Datasheet
11,439In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

PRG18-MM1RB 4.7 Ohms 20 % PCB Mount SMD/SMT - 20 C + 85 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors
Datasheet
3,860In Stock
MouseReel Available
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 470 OHM 50% SMD 0805
Datasheet
7,470In Stock
MouseReel Available
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 0805
Datasheet
6,837In Stock
MouseReel Available
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 0805
Datasheet
6,271In Stock
MouseReel Available
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
Datasheet
4,032In Stock
Min.: 1
Mult.: 1

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 90 C Bulk
Murata Electronics PTC Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC
Datasheet
12,000In Stock
Min.: 1
Mult.: 1
: 15,000

PRF 1 kOhms 50 % PCB Mount SMD/SMT - 40 C + 150 C Reel, Cut Tape
Murata Electronics PTC Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC
Datasheet
10,400In Stock
Min.: 1
Mult.: 1
: 15,000

PRF 1 kOhms 50 % PCB Mount SMD/SMT - 40 C + 150 C Reel, Cut Tape
Murata Electronics PTC Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC
Datasheet
12,000In Stock
Min.: 1
Mult.: 1
: 15,000

PRF 1 kOhms 50 % PCB Mount SMD/SMT - 40 C + 120 C Reel, Cut Tape
Murata Electronics PTC Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC
Datasheet
11,968In Stock
Min.: 1
Mult.: 1
: 15,000

PRF 1 kOhms 50 % PCB Mount SMD/SMT - 40 C + 150 C Reel, Cut Tape
Murata Electronics PTC Thermistors 0.6x0.3mm 1kohm 115+/-5degC
Datasheet
13,599In Stock
Min.: 1
Mult.: 1
: 15,000

PRF 1 kOhms 50 % PCB Mount SMD/SMT - 40 C + 140 C Reel, Cut Tape
Murata Electronics PTC Thermistors 0.6x0.3mm 1kohm 105+/-5degC
Datasheet
14,465In Stock
Min.: 1
Mult.: 1
: 15,000

PRF 1 kOhms 50 % PCB Mount SMD/SMT - 40 C + 130 C Reel, Cut Tape
Murata Electronics PTC Thermistors 33 OHM 20% SMD 0603
Datasheet
157,704In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

PRG18-MB1RB 33 Ohms 20 % PCB Mount SMD/SMT - 20 C + 75 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors
Datasheet
64,080In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 10,000

PRF 1 kOhms 50 % PCB Mount SMD/SMT - 40 C + 140 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 470 OHM 50% SMD 0603
Datasheet
64,034In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 150 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 100 OHM 20% SMD 0603
Datasheet
49,031In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

PRG18-MB1RB 100 Ohms 20 % PCB Mount SMD/SMT - 20 C + 75 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 33 OHM 20% SMD 0603
Datasheet
9,425In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

PRG18-MS1RB 33 Ohms 20 % PCB Mount SMD/SMT - 40 C + 75 C AEC-Q100 Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 0603 47ohm 20% SMD
Datasheet
84,233In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

PRG18-MB1RB 47 Ohms 20 % PCB Mount SMD/SMT - 20 C + 75 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 42 OHM 20% SMD 0805
Datasheet
6,096In Stock
MouseReel Available
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 15 OHM 20% SMD 0805
Datasheet
10,174In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

PRG21-MB1RK 15 Ohms 20 % PCB Mount SMD/SMT - 10 C + 60 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 0.2 OHM 20% SMD 0805
Datasheet
8,126In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

PRG21-MM1RA 200 mOhms 20 % PCB Mount SMD/SMT - 20 C + 85 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 2.2 OHM 20% SMD 0603
Datasheet
Non-Stocked Lead-Time 10 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

PRG18-MM1RB 2.2 Ohms 20 % PCB Mount SMD/SMT - 20 C + 85 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 6.8 OHM 20% SMD 0805
Datasheet
18,755In Stock
16,000Expected 11/23/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

PRG21-MM1RA 6.8 Ohms 20 % PCB Mount SMD/SMT - 20 C + 85 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors
Datasheet
9,889In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 10,000

PRF 1 kOhms 50 % PCB Mount SMD/SMT - 40 C + 150 C Reel, Cut Tape, MouseReel