Resettable Fuses - PPTC – Mouser Singapore

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PTC Fuses for AC/DC Power Supplies

A Positive Thermal Coefficient fuse, or PTC thermistor, is a thermally sensitive semiconductor resistor that increases in resistance as temperature increases to limit current to a load. When the voltage input for a power supply is too far above or below what is specified, the excess current can damage components. Besides shutting down the power supply altogether, one can effectively limit the current by using the predictable resistive response of a PTC.

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Part #

Resettable Fuses - PPTC 3A 30V 100A Imax

RUEF300-AP
Littelfuse
1: $0.87
1,709In Stock

Mfr. Part No.
RUEF300-AP

Mouser Part No
650-RUEF300-AP

Littelfuse

Resettable Fuses - PPTC 3A 30V 100A Imax

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Datasheet

1,709In Stock

$0.87

$0.801

$0.665

$0.613

View

Reel

$0.401

Min.: 1
Mult.: 1

: 1,000

RUEF

PCB Mount

Radial

3 A

30 VDC

6 A

100 A

80 mOhms

- 40 C

+ 85 C

5.8 mm

Ammo Pack

Resettable Fuses - PPTC 3A 30V 100A Imax

RUEF300K-2
Littelfuse
1: $0.87
4,797In Stock

Mfr. Part No.
RUEF300K-2

Mouser Part No
650-RUEF300K-2

Littelfuse

Resettable Fuses - PPTC 3A 30V 100A Imax

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Datasheet

4,797In Stock

Cut Tape

$0.87

$0.801

$0.665

$0.613

Reel

$0.36

View

Min.: 1
Mult.: 1

: 2,500

RUEF

PCB Mount

Radial

3 A

30 VDC

6 A

100 A

80 mOhms

- 40 C

+ 85 C

5.8 mm

Reel, Cut Tape

Resettable Fuses - PPTC Radial Lead .3A 72V 40A Imax

RXEF030-2
Littelfuse
1: $0.707
5,045In Stock

Mfr. Part No.
RXEF030-2

Mouser Part No
650-RXEF030-2

Littelfuse

Resettable Fuses - PPTC Radial Lead .3A 72V 40A Imax

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Datasheet

Product Comments

5,045In Stock

Cut Tape

$0.707

$0.645

$0.534

$0.49

Reel

$0.283

View

Min.: 1
Mult.: 1

: 3,000

RXEF

PCB Mount

Radial

300 mA

72 VDC

600 mA

40 A

2.1 Ohms

- 40 C

+ 85 C

5.8 mm

Reel, Cut Tape

Resettable Fuses - PPTC Radial Lead .5A 72V 40A Imax

RXEF050-2
Littelfuse
1: $0.707
5,377In Stock

Mfr. Part No.
RXEF050-2

Mouser Part No
650-RXEF050-2

Littelfuse

Resettable Fuses - PPTC Radial Lead .5A 72V 40A Imax

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Datasheet

Product Comments

5,377In Stock

Cut Tape

$0.707

$0.623

$0.534

$0.473

Reel

$0.283

View

Min.: 1
Mult.: 1

: 3,000

RXEF

PCB Mount

Radial

500 mA

72 VDC

1 A

40 A

1.17 Ohms

- 40 C

+ 85 C

5.8 mm

Reel, Cut Tape

Resettable Fuses - PPTC Radial Lead .75A 72V 40A Imax

RXEF075S
Littelfuse
1: $0.639
275In Stock
1,000Expected 1/9/2026

Mfr. Part No.
RXEF075S

Mouser Part No
650-RXEF075S

Littelfuse

Resettable Fuses - PPTC Radial Lead .75A 72V 40A Imax

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Datasheet

Product Comments

275In Stock

1,000Expected 1/9/2026

$0.639

$0.579

$0.481

$0.48

View

Min.: 1
Mult.: 1

RXEF

PCB Mount

Radial

750 mA

72 VDC

1.5 A

40 A

600 mOhms

- 40 C

+ 85 C

5.8 mm

Bulk

Resettable Fuses - PPTC Radial Lead 2.5A 72V 40A Imax

RXEF250-2
Littelfuse
1: $1.39
1,807In Stock

Mfr. Part No.
RXEF250-2

Mouser Part No
650-RXEF250-2

Littelfuse

Resettable Fuses - PPTC Radial Lead 2.5A 72V 40A Imax

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Datasheet

Product Comments

1,807In Stock

Cut Tape

$1.39

$1.27

$1.03

$0.975

Reel

$0.638

View

Min.: 1
Mult.: 1

: 1,000

RXEF

PCB Mount

Radial

2.5 A

72 VDC

5 A

40 A

130 mOhms

- 40 C

+ 85 C

10.9 mm

Reel, Cut Tape

Resettable Fuses - PPTC Polyswitch 0.26A Restive Range -2

TS250-130F-RA-2
Littelfuse
1: $2.16
1,120In Stock

Mfr. Part No.
TS250-130F-RA-2

Mouser Part No
650-TS250-130F-RA-2

Littelfuse

Resettable Fuses - PPTC Polyswitch 0.26A Restive Range -2

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Datasheet

1,120In Stock

Cut Tape

$2.16

$1.86

$1.66

$1.26

Reel

$0.929

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

TS250

PCB Mount

SMD/SMT

130 mA

60 VDC

260 mA

3 A

15 Ohms

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Resettable Fuses - PPTC 250V .250A-HD 3A MAX (R)

TSM600-250F-RA-2
Littelfuse
1: $11.14
107In Stock

Mfr. Part No.
TSM600-250F-RA-2

Mouser Part No
650-TSM600-250F-RA-2

Littelfuse

Resettable Fuses - PPTC 250V .250A-HD 3A MAX (R)

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Datasheet

107In Stock

Cut Tape

$11.14

$9.63

$8.88

$7.37

$5.37

Reel

$5.37

MouseReel Available

Min.: 1
Mult.: 1

: 200

TSM600

PCB Mount

SMD/SMT

250 mA

250 VDC

860 mA

3 A

5 Ohms

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Resettable Fuses - PPTC RESETTABLE FUSE 220VOLT 25OHM

CMF-RL25U-0
Bourns
1: $0.966
5In Stock
14,000Expected 16/11/2026

Mfr. Part No.
CMF-RL25U-0

Mouser Part No
652-CMF-RL25U-0

Bourns

Resettable Fuses - PPTC RESETTABLE FUSE 220VOLT 25OHM

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Datasheet

5In Stock

14,000Expected 16/11/2026

$0.966

$0.879

$0.737

$0.632

View

Min.: 1
Mult.: 1

CMF-RL

PCB Mount

Radial

60 mA

230 VAC

150 mA

900 mA

25 Ohms

- 40 C

+ 125 C

5 mm

Bulk

Resettable Fuses - PPTC 1.85A 33V 2920

2920L185DR
Littelfuse
1: $1.12
86,875On Order

Mfr. Part No.
2920L185DR

Mouser Part No
576-2920L185

Littelfuse

Resettable Fuses - PPTC 1.85A 33V 2920

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Datasheet

86,875On Order

Cut Tape

$1.12

$0.956

$0.801

$0.751

View

Reel

$0.499

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

2920L

SMD/SMT

1.85 A

33 VDC

3.7 A

40 A

150 mOhms

2920 (7450 metric)

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Resettable Fuses - PPTC 33V 1.85A-HD 40A MAX

MF-LSMF185/33X-2
Bourns
1: $1.28
14,748Expected 4/9/2026

Mfr. Part No.
MF-LSMF185/33X-2

Mouser Part No
652-MF-LSMF185/33X-2

Bourns

Resettable Fuses - PPTC 33V 1.85A-HD 40A MAX

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Datasheet

14,748Expected 4/9/2026

Cut Tape

$1.28

$0.993

$0.932

$0.703

View

Reel

$0.583

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

MF-LSMF

SMD/SMT

1.85 A

33 VDC

3.7 A

40 A

150 mOhms

2920 (7450 metric)

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Resettable Fuses - PPTC 0.30A 60V 2920

2920L030DR
Littelfuse
1: $0.938
10,500Expected 8/9/2026

Mfr. Part No.
2920L030DR

Mouser Part No
576-2920L030

Littelfuse

Resettable Fuses - PPTC 0.30A 60V 2920

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Datasheet

10,500Expected 8/9/2026

Cut Tape

$0.938

$0.764

$0.706

$0.585

Reel

$0.487

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

2920L

SMD/SMT

300 mA

60 VDC

600 mA

10 A

4.8 Ohms

2920 (7450 metric)

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Resettable Fuses - PPTC 30V 40A 1.75Ohms

MINISMDC030F-2
Littelfuse
1: $0.68
21,983On Order

Mfr. Part No.
MINISMDC030F-2

Mouser Part No
650-MINISMDC030F-2

Littelfuse

Resettable Fuses - PPTC 30V 40A 1.75Ohms

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Datasheet

21,983On Order

Cut Tape

$0.68

$0.622

$0.522

$0.476

Reel

$0.29

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

miniSMD

SMD/SMT

300 mA

30 VDC

600 mA

40 A

1.75 Ohms

1812 (4532 metric)

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Resettable Fuses - PPTC .35A 16V Nano SMD AEC-Q200

NANOASMDC035F-2
Littelfuse
1: $0.83
8,620Expected 30/7/2026

Mfr. Part No.
NANOASMDC035F-2

Mouser Part No
650-NANOASMDC035F-2

Littelfuse

Resettable Fuses - PPTC .35A 16V Nano SMD AEC-Q200

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Datasheet

8,620Expected 30/7/2026

Cut Tape

$0.83

$0.702

$0.627

$0.515

Reel

$0.336

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

nanoASMDC

SMD/SMT

350 mA

16 VDC

750 mA

20 A

1.35 Ohms

1206 (3216 metric)

- 40 C

+ 85 C

AEC-Q100

Reel, Cut Tape, MouseReel

Resettable Fuses - PPTC 4A 30V 100A Imax

RUEF400
Littelfuse
1: $0.83
20,568Expected 8/9/2026

Mfr. Part No.
RUEF400

Mouser Part No
650-RUEF400

Littelfuse

Resettable Fuses - PPTC 4A 30V 100A Imax

Learn More

Datasheet

20,568Expected 8/9/2026

$0.83

$0.762

$0.632

$0.583

View

Min.: 1
Mult.: 1

RUEF

PCB Mount

Radial

4 A

30 VDC

8 A

100 A

50 mOhms

- 40 C

+ 85 C

5.8 mm

Bulk

Resettable Fuses - PPTC 9A 30V 100A Imax

RUEF900
Littelfuse
1: $1.56
18,730Expected 26/8/2026

Mfr. Part No.
RUEF900

Mouser Part No
650-RUEF900

Littelfuse

Resettable Fuses - PPTC 9A 30V 100A Imax

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Datasheet

18,730Expected 26/8/2026

$1.56

$1.44

$1.19

$1.10

View

Min.: 1
Mult.: 1

RUEF

PCB Mount

Radial

9 A

30 VDC

18 A

100 A

20 mOhms

- 40 C

+ 85 C

10.9 mm

Bulk

Resettable Fuses - PPTC .16A 48V Nano SMD AEC-Q200

NANOASMDC016F-2
Littelfuse
1: $0.734
5,991Expected 20/8/2026

Mfr. Part No.
NANOASMDC016F-2

Mouser Part No
650-NANOASMDC016F-2

Littelfuse

Resettable Fuses - PPTC .16A 48V Nano SMD AEC-Q200

Learn More

Datasheet

5,991Expected 20/8/2026

Cut Tape

$0.734

$0.677

$0.562

$0.517

Reel

$0.298

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

nanoASMDC

SMD/SMT

160 mA

48 VDC

450 mA

10 A

5 Ohms

1206 (3216 metric)

- 40 C

+ 85 C

AEC-Q200

Reel, Cut Tape, MouseReel

Resettable Fuses - PPTC PTC RESETTABLE 3.0A 72V RADIAL LEADED

MF-RX300/72-0-14
Bourns
6,000: $0.488
Non-Stocked Lead-Time 4 Weeks

Mfr. Part No.
MF-RX300/72-0-14

Mouser Part No
652-MF-RX300/72-0-14

Bourns

Resettable Fuses - PPTC PTC RESETTABLE 3.0A 72V RADIAL LEADED

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Datasheet

Non-Stocked Lead-Time 4 Weeks

$0.488

Min.: 6,000
Mult.: 3,000

MF-RX/72

PCB Mount

Radial

3 A

72 VDC

6 A

40 A

60 mOhms

- 40 C

+ 85 C

10.2 mm

Bulk

Resettable Fuses - PPTC .25A 72V 40A Imax

RXEF025-AP
Littelfuse
1: $0.68
Non-Stocked Lead-Time 17 Weeks

Mfr. Part No.
RXEF025-AP

Mouser Part No
650-RXEF025-AP

Littelfuse

Resettable Fuses - PPTC .25A 72V 40A Imax

Learn More

Datasheet

Product Comments

Non-Stocked Lead-Time 17 Weeks

Cut Tape

$0.68

$0.626

$0.52

$0.473

View

Reel

$0.291

Min.: 1
Mult.: 1

: 2,000

RXEF

PCB Mount

Radial

250 mA

72 VDC

500 mA

40 A

3 Ohms

- 40 C

+ 85 C

5.8 mm

Reel, Cut Tape

Resettable Fuses - PPTC 72V 3.75A-HD 40A RXEF

RXEF375-1
Littelfuse
1: $1.71
Non-Stocked Lead-Time 17 Weeks

Mfr. Part No.
RXEF375-1

Mouser Part No
650-RXEF375-1

Littelfuse

Resettable Fuses - PPTC 72V 3.75A-HD 40A RXEF

Learn More

Datasheet

Product Comments

Non-Stocked Lead-Time 17 Weeks

$1.71

$1.58

$1.31

$1.20

View

Min.: 1
Mult.: 1

RXEF

PCB Mount

Radial

3.75 A

72 VDC

7.5 A

40 A

80 mOhms

- 40 C

+ 85 C

10.9 mm

Bulk

Resettable Fuses - PPTC 250V .12A-HD 3A MAX

TRF250-120T-R1-B-0.5
Littelfuse
1: $1.09
Non-Stocked Lead-Time 17 Weeks

Mfr. Part No.
TRF250-120T-R1-B-0.5

Mouser Part No
650-TRF250120TR1B0.5

Littelfuse

Resettable Fuses - PPTC 250V .12A-HD 3A MAX

Learn More

Datasheet

Non-Stocked Lead-Time 17 Weeks

$1.09

$1.00

$0.83

$0.766

View

Min.: 1
Mult.: 1

TRF250

PCB Mount

Radial

120 mA

60 VDC

240 mA

3 A

16 Ohms

- 40 C

+ 85 C

5 mm

Bulk

Resettable Fuses - PPTC 0.90A 60V 0.14ohm Short Lead Length

MF-R090-0-003
Bourns
1: $1.29
Non-Stocked

Mfr. Part No.
MF-R090-0-003

Mouser Part No
652-MF-R090-0-003

Bourns

Resettable Fuses - PPTC 0.90A 60V 0.14ohm Short Lead Length

Learn More

Datasheet

Non-Stocked

$1.29

$0.982

$0.921

$0.696

View

Min.: 1
Mult.: 1

MF-R/90

PCB Mount

Radial

900 mA

60 VDC

1.8 A

40 A

310 mOhms

- 40 C

+ 85 C

5.1 mm

Bulk

PTC Fuses for AC/DC Power Supplies

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0805L
1206L
1210L
16R
1812L
2016L
250R
250S
2920L
30R
600R
60R
72R
AHEF
ASMD
CMF-RL
CMF-SDP
LVR
MF-LS
MF-LSMF

50 mA
60 mA
80 mA
100 mA
110 mA
120 mA
130 mA
140 mA
150 mA
160 mA
170 mA
200 mA
250 mA
300 mA
330 mA
350 mA
400 mA
500 mA
750 mA
900 mA

150 mA
160 mA
200 mA
230 mA
240 mA
250 mA
260 mA
280 mA
290 mA
300 mA
320 mA
340 mA
370 mA
390 mA
400 mA
420 mA
450 mA
500 mA
560 mA
600 mA

8.6 mOhms
10.2 mOhms
13.5 mOhms
16 mOhms
20 mOhms
30 mOhms
31 mOhms
48 mOhms
50 mOhms
60 mOhms
68 mOhms
70 mOhms
75 mOhms
80 mOhms
97.5 mOhms
100 mOhms
110 mOhms
120 mOhms
125 mOhms
130 mOhms