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All Products > Circuit Protection > Thermistors > PTC Thermistors

Murata PTC Thermistors - POSISTOR®

The Murata PTC Thermistors - POSISTOR® - are Positive Temperature Coefficient (PTC) Thermistors. In a conventional NTC thermistor, the resistance decreases when the temperature increases, but the PTC Thermistors' resistance rises sharply when its temperature exceeds a specific temperature. These characteristics make Murata PTC POSISTORs ideal for circuit protection in a variety of applications such as temperature sensor and temperature compensation, and for current control in common household appliances, humidifiers, facsimile, copies, dryers of all kinds, refrigerators, freezers, and air conditioners.
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Category   Circuit Protection >  Thermistors >  PTC Thermistors

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Murata Electronics PRF18AR471QB5RB
81-PRF18AR471QB5RB


To purchase full reel, order in multiples of 4000:
Murata Electronics PTC Thermistors 470 Ohm 50% 32volts
Page 821

Data Sheet
15,020
In Stock
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1: $0.49
10: $0.304
100: $0.231
1,000: $0.198
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470 Ohms 50 % SMD/SMT PRF18 - 20 C to + 160 C
Murata Electronics PRF18BA471QB5RB
81-PRF18BA471QB5RB


To purchase full reel, order in multiples of 4000:
Murata Electronics PTC Thermistors 470 Ohm 50% 32volts
Page 821

Data Sheet
13,338
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10: $0.308
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470 Ohms 50 % SMD/SMT PRF18 - 20 C to + 150 C
Murata Electronics PRG18BB470MB1RB
81-PRG18BB470MB1RB


To purchase full reel, order in multiples of 4000:
Murata Electronics PTC Thermistors 47 OHM 24V
Page 819

Data Sheet
12,455
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10: $0.327
100: $0.242
1,000: $0.218
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47 Ohms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PRG18BB471MB1RB
81-PRG18BB471MB1RB


To purchase full reel, order in multiples of 4000:
Murata Electronics PTC Thermistors 470 OHM 24V
Page 819

Data Sheet
19,184
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10: $0.327
100: $0.242
1,000: $0.218
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470 Ohms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PRG18BB330MB1RB
81-PRG18BB330MB1RB


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Murata Electronics PTC Thermistors 33 OHM 24V
Page 819

Data Sheet
19,511
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100: $0.242
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33 Ohms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PRG18BB221MB1RB
81-PRG18BB221MB1RB


To purchase full reel, order in multiples of 4000:
Murata Electronics PTC Thermistors 220 OHM 24V
Page 819

Data Sheet
12,272
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10: $0.327
100: $0.242
1,000: $0.218
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220 Ohms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PRG18BC2R2MM1RB
81-PRG18BC2R2MM1RB


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Murata Electronics PTC Thermistors 2.2 Ohm 20% 12volts
Page 819

Data Sheet
7,993
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100: $0.293
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2.2 Ohms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PRF21AS471QB5RA
81-PRF21AS471QB5RA


To purchase full reel, order in multiples of 4000:
Murata Electronics PTC Thermistors 470 Ohm 50% 32volts
Page 821

Data Sheet
6,750
In Stock
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1: $0.72
10: $0.441
100: $0.327
1,000: $0.294
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4,000: $0.237
24,000: View

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Mult.: 1
Reel: 4,000
470 Ohms 50 % SMD/SMT PRF21 - 20 C to + 160 C
Murata Electronics PRG18BB330MS1RB
81-PRG18BB330MS1RB


To purchase full reel, order in multiples of 4000:
Murata Electronics PTC Thermistors 33Ohm 20%
Page 819

Data Sheet
15,010
In Stock
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10: $0.484
100: $0.358
1,000: $0.323
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33 Ohms 20 % SMD/SMT PRG
Murata Electronics PRG21BC0R2MM1RA
81-PRG21BC0R2MM1RA


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Murata Electronics PTC Thermistors 0.2 OHM 6V
Page 820

Data Sheet
8,000
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10: $0.534
100: $0.396
1,000: $0.356
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200 mOhms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PRG21BC4R7MM1RA
81-PRG21BC4R7MM1RA


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Murata Electronics PTC Thermistors 4.7 ohms 90deg C
Page 820

Data Sheet
22,270
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4.7 Ohms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PRG21BC6R8MM1RA
81-PRG21BC6R8MM1RA


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Murata Electronics PTC Thermistors 6.8 ohms 90deg C
Page 820

Data Sheet
6,559
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10: $0.534
100: $0.396
1,000: $0.356
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6.8 Ohms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PRG21BB150MB1RK
81-PRG21BB150MB1RK


To purchase full reel, order in multiples of 3000:
Murata Electronics PTC Thermistors 15 OHM 20V
Page 820

Data Sheet
9,232
In Stock
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10: $0.623
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15 Ohms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PRG21BB220MB1RK
81-PRG21BB220MB1RK


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Murata Electronics PTC Thermistors 22 OHM 20V
Page 820

Data Sheet
5,260
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10: $0.623
100: $0.462
1,000: $0.416
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22 Ohms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PTFM04BD222Q2N34B0 Murata Electronics PTC Thermistors 2.2K OHM 20%
Page 821

Data Sheet
4,198
In Stock
1: $1.51
10: $0.887
100: $0.732
500: $0.677
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330 Ohms 20 % Radial PTFM - 10 C to + 130 C
Murata Electronics PRF18BE471QB5RB
81-PRF18BE471QB5RB


To purchase full reel, order in multiples of 4000:
Murata Electronics PTC Thermistors 470 Ohm 50% 32volts
Page 821

Data Sheet
5,924
In Stock
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1: $0.49
10: $0.304
100: $0.231
1,000: $0.198
Reel
4,000: $0.15
24,000: $0.14

MouseReel Available


Min.: 1
Mult.: 1
Reel: 4,000
470 Ohms 50 % SMD/SMT PRF18 - 20 C to + 110 C
Murata Electronics PRG18BC1R0MM1RB
81-PRG18BC1R0MM1RB


To purchase full reel, order in multiples of 4000:
Murata Electronics PTC Thermistors 1.0 Ohm 20% 6volts
Page 819

Data Sheet
3,899
In Stock
More Info Available
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1: $0.59
10: $0.359
100: $0.266
1,000: $0.239
Reel
4,000: $0.193
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Min.: 1
Mult.: 1
Reel: 4,000
1 Ohms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PRG18BC6R8MM1RB
81-PRG18BC6R8MM1RB


To purchase full reel, order in multiples of 4000:
Murata Electronics PTC Thermistors 6.8 Ohm 20% 20volts
Page 819

Data Sheet
4,915
In Stock
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1: $0.65
10: $0.395
100: $0.293
1,000: $0.256
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4,000: $0.223
8,000: View

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Min.: 1
Mult.: 1
Reel: 4,000
6.8 Ohms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PRF21BB471QB5RA
81-PRF21BB471QB5RA


To purchase full reel, order in multiples of 4000:
Murata Electronics PTC Thermistors 470 Ohm 50% 32volts
Page 821

Data Sheet
3,900
In Stock
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1: $0.73
10: $0.441
100: $0.327
1,000: $0.294
Reel
4,000: $0.237
8,000: View

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Min.: 1
Mult.: 1
Reel: 4,000
470 Ohms 50 % SMD/SMT PRF21 - 20 C to + 130 C
Murata Electronics PRG21AR420MB1RA
81-PRG21AR420MB1RA


To purchase full reel, order in multiples of 4000:
Murata Electronics PTC Thermistors 42 OHM 20%
Data Sheet 3,276
In Stock
Cut Tape
1: $0.77
10: $0.466
100: $0.345
1,000: $0.311
Reel
4,000: $0.25
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Min.: 1
Mult.: 1
Reel: 4,000
42 Ohms 20 % SMD/SMT PRG - 40 C to + 105 C
Murata Electronics PRG18BB471MS1RB Murata Electronics PTC Thermistors 470 Ohm 20%
Page 819

Data Sheet
3,796
In Stock
1: $0.79
10: $0.484
100: $0.358
1,000: $0.323
4,000: View



Min.: 1
Mult.: 1
470 Ohms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PRG18BB221MS1RB
81-PRG18BB221MS1RB


To purchase full reel, order in multiples of 4000:
Murata Electronics PTC Thermistors 220 Ohm 20%
Page 819

Data Sheet
3,550
In Stock
Cut Tape
1: $0.79
10: $0.484
100: $0.358
1,000: $0.323
Reel
4,000: $0.26
24,000: View

MouseReel Available


Min.: 1
Mult.: 1
Reel: 4,000
220 Ohms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PRG21BC0R6MM1RA
81-PRG21BC0R6MM1RA


To purchase full reel, order in multiples of 4000:
Murata Electronics PTC Thermistors 0.6 Ohm 20% 6volts
Page 820

Data Sheet
3,484
In Stock
Cut Tape
1: $0.88
10: $0.534
100: $0.396
1,000: $0.346
Reel
4,000: $0.301
8,000: View

MouseReel Available


Min.: 1
Mult.: 1
Reel: 4,000
600 mOhms 20 % SMD/SMT PRG - 10 C to + 60 C
Murata Electronics PRG21AR220MS1RK
81-PRG21AR220MS1RK


To purchase full reel, order in multiples of 3000:
Murata Electronics PTC Thermistors 22 OHM 20%
Data Sheet 3,176
In Stock
Cut Tape
1: $1.12
10: $0.674
100: $0.50
1,000: $0.437
Reel
3,000: $0.352
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Min.: 1
Mult.: 1
Reel: 3,000
22 Ohms 20 % SMD/SMT PRG
Murata Electronics PTGL07BD101N3B51B0 Murata Electronics PTC Thermistors 100 OHM 30%
Data Sheet 1,772
In Stock
1: $1.36
10: $0.793
100: $0.654
500: $0.605
1,000: View



Min.: 1
Mult.: 1
100 Ohms 30 % Radial PTGL 0 C to + 80 C
Compare up to 20 parts.
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