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 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
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 0603
Datasheet
4,047In Stock
Min.: 1
Mult.: 1

PRF 470 Ohms 50 % PCB Mount SMD/SMT - 20 C + 90 C Bulk
Murata Electronics PTC Thermistors 470 OHM 50% SMD 0805
Datasheet
7,670In 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 0603 1kohm 125+/-5degC Curie Point 110degC
Datasheet
10,500In 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
9,100In 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
10,500In 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
10,472In 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
165,195In 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
69,280In 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
29,031In Stock
20,000Expected 8/10/2026
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
87,102In 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 470 OHM 20% SMD 0603
Datasheet
23,163In Stock
28,000Expected 9/22/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

PRG18-MB1RB 470 Ohms 20 % PCB Mount SMD/SMT - 20 C + 75 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 15 OHM 20% SMD 0805
Datasheet
10,424In 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
8,176In 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
Datasheet
5,605In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

PRG21-MM1RA 3.3 Ohms 20 % PCB Mount SMD/SMT - 20 C + 85 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 1 OHM 20% SMD 0603
Datasheet
2,990In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

PRG18-MM1RB 1 Ohms 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 12 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