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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Qty. RoHS ECAD Model Series
Resistance
Tolerance
Mounting Style
Termination Style
Minimum Operating Temperature
Maximum Operating Temperature
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Murata Electronics PTC Thermistors
Datasheet
25,041In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

PRG21-MM1RK 1 Ohms 20 % PCB Mount SMD/SMT - 20 C + 85 C Reel, Cut Tape, MouseReel
Murata Electronics PTC Thermistors 15 OHM 20% SMD 0805
Datasheet
10,074In 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 33 OHM 20% SMD 0603
Datasheet
151,624In 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 100 OHM 20% SMD 0603
Datasheet
41,929In Stock
32,000Expected 03/12/2026
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 0603 47ohm 20% SMD
Datasheet
78,019In Stock
44,000Expected 26/11/2026
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
Datasheet
11,929In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 4,000
: 4,000

PRG18-MM1RB 22 Ohms 20 % PCB Mount SMD/SMT - 20 C + 85 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 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 6.8 OHM 20% SMD 0805
Datasheet
18,755In Stock
16,000Expected 23/11/2026
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 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 33 OHM 20% SMD 0603
Datasheet
1,345In Stock
4,000Expected 04/12/2026
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 470 OHM 20% SMD 0603
Datasheet
12,153In Stock
52,000On Order
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 22 OHM 20% SMD 0805
Datasheet
2,632In Stock
12,000Expected 24/11/2026
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 42 OHM 20% SMD 0805
Datasheet
1,142In 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 0.6 OHM 20% SMD 0805
Datasheet
3,870In 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 2.2 OHM 20% SMD 0805
Datasheet
1,008In Stock
12,000On Order
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
4,438In 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 0805
Datasheet
4,759In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 4,000
: 4,000

PRG21-MM1RA 1 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
4,270In Stock
4,000Expected 12/10/2026
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 220 OHM 20% SMD 0603
Datasheet
91,330On Order
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 22 OHM 20% SMD 0805
Datasheet
24,251On 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
Datasheet
4,000Expected 23/11/2026
Min.: 1
Mult.: 1
Max.: 12,000
: 4,000

PRG21-MS5RA 22 Ohms 20 % PCB Mount SMD/SMT - 40 C + 105 C Reel, Cut Tape
Murata Electronics PTC Thermistors
Datasheet
84Factory Stock Available
More Info Available
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
Murata Electronics PTC Thermistors
Datasheet
Non-Stocked Lead-Time 8 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 4 Weeks
Min.: 4,000
Mult.: 4,000

PRG18-MS1RB 47 Ohms 20 % PCB Mount SMD/SMT - 40 C + 75 C AEC-Q100 Bulk