PRG Series PTC Thermistors

Murata Electronics PRG Series PTC Thermistors are posistors for overcurrent protection that offer a voltage rating up to 32V and a current range of 10mA to 75mA. These thermistors feature a compact design, low profile, and a wide operating temperature range of -20°C to +85°C. PRG thermistors automatically return to their initial state when the overcurrent is eliminated and can be used repeatedly. Murata Electronics PRG Series PTC Thermistors are suitable for various types of equipment, including aircraft, aerospace, disaster, medical, crime prevention, and transportation.

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Description Datasheet Availability Pricing (CAD) 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
Datasheet
1,054In Stock
4,000Expected 2026-09-30
Min.: 1
Mult.: 1
: 4,000

PRG21-MS5RA 22 Ohms 20 % PCB Mount SMD/SMT - 40 C + 105 C Reel, Cut Tape
Murata Electronics PTC Thermistors 100 OHM 20% SMD 0603
Datasheet
33,391In Stock
20,000Expected 2026-08-21
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
72,450In Stock
100,000Expected 2026-07-27
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 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
20,813In Stock
72,000Expected 2026-07-27
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
24,544In Stock
28,000Expected 2026-09-22
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
Datasheet
20,421In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

PRG18-MM1RB 22 Ohms 20 % PCB Mount SMD/SMT - 20 C + 85 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 22 OHM 20% SMD 0805
Datasheet
6,994In Stock
MouseReel Available
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 15 OHM 20% SMD 0805
Datasheet
10,749In 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
8,236In 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 6.8 OHM 20% SMD 0805
Datasheet
19,080In Stock
16,000Expected 2026-10-26
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 100 OHM 20% SMD 0603
Datasheet
2,638In Stock
MouseReel Available
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
Datasheet
5,849In Stock
56,000Expected 2026-10-05
MouseReel Available
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 42 OHM 20% SMD 0805
Datasheet
2,132In Stock
4,000Expected 2026-08-11
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 42 OHM 20% SMD 0805
Datasheet
1,242In Stock
MouseReel Available
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
Datasheet
1,480In Stock
12,000On Order
MouseReel Available
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
Datasheet
3,920In Stock
MouseReel Available
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
Datasheet
4,969In Stock
MouseReel Available
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
Datasheet
4,075In Stock
4,000Expected 2026-09-25
MouseReel Available
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
Datasheet
1,605In Stock
4,000Expected 2026-07-21
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 4.7 OHM 20% SMD 0805
Datasheet
4,440In Stock
4,000Expected 2026-09-28
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

PRG21-MM1RA 4.7 Ohms 20 % PCB Mount SMD/SMT - 20 C + 85 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 4,000
Mult.: 4,000
: 4,000

PRG18-MS1RB 220 Ohms 20 % PCB Mount SMD/SMT - 40 C + 75 C AEC-Q100 Reel
Murata Electronics PTC Thermistors
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 4,000
Mult.: 4,000

PRG18-MS1RB 47 Ohms 20 % PCB Mount SMD/SMT - 40 C + 75 C AEC-Q100 Bulk
Murata Electronics PTC Thermistors
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 4,000
Mult.: 4,000
: 4,000

PRG18-MS1RB 470 Ohms 20 % PCB Mount SMD/SMT - 40 C + 75 C AEC-Q100 Reel
Murata Electronics PTC Thermistors
Datasheet
Lead-Time 12 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

PRG21-MS5RA 22 Ohms 20 % PCB Mount SMD/SMT - 10 C + 60 C Reel, Cut Tape, MouseReel