Resettable Fuses - PPTC – Mouser Liechtenstein

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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 Radial Lead .3A 72V 40A Imax

RXEF030-2
Littelfuse
1: CHF 0.396
3’286In Stock
6’000Expected 12/2/2026

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

3’286In Stock

6’000Expected 12/2/2026

Cut Tape

CHF 0.396

CHF 0.337

CHF 0.307

CHF 0.264

Reel

CHF 0.165

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: CHF 0.412
4’903In Stock
6’000Expected 8/20/2026

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

4’903In Stock

6’000Expected 8/20/2026

Cut Tape

CHF 0.412

CHF 0.363

CHF 0.312

CHF 0.276

Reel

CHF 0.167

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: CHF 0.372
215In Stock
1’000Expected 8/18/2026

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

215In Stock

1’000Expected 8/18/2026

CHF 0.372

CHF 0.337

CHF 0.28

CHF 0.233

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: CHF 0.809
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

CHF 0.809

CHF 0.742

CHF 0.603

CHF 0.569

View

Reel

CHF 0.379

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 15V 40A 0.05Ohms

SMD300F/15-2
Littelfuse
1: CHF 0.563
4’101In Stock
8’000Expected 12/4/2026

Mfr. Part No.
SMD300F/15-2

Mouser Part No
650-SMD300F/15-2

Littelfuse

Resettable Fuses - PPTC 15V 40A 0.05Ohms

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Datasheet

4’101In Stock

8’000Expected 12/4/2026

Cut Tape

CHF 0.563

CHF 0.50

CHF 0.428

CHF 0.396

View

Reel

CHF 0.293

MouseReel Available

Min.: 1
Mult.: 1

: 2’000

SMD

SMD/SMT

3 A

15 VDC

6 A

40 A

50 mOhms

2920 (7450 metric)

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Resettable Fuses - PPTC Polyswitch 0.26A Restive Range -2

TS250-130F-RA-2
Littelfuse
1: CHF 1.26
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

CHF 1.26

CHF 1.09

CHF 0.968

CHF 0.736

Reel

CHF 0.55

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: CHF 6.49
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

CHF 6.49

CHF 5.61

CHF 5.18

CHF 4.30

CHF 3.13

Reel

CHF 3.13

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 1.85A 33V 2920

2920L185DR
Littelfuse
1: CHF 0.65
88’360On Order

Mfr. Part No.
2920L185DR

Mouser Part No
576-2920L185

Littelfuse

Resettable Fuses - PPTC 1.85A 33V 2920

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Datasheet

88’360On Order

Cut Tape

CHF 0.65

CHF 0.557

CHF 0.467

CHF 0.438

View

Reel

CHF 0.291

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: CHF 0.705
11’951Expected 8/11/2026

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

11’951Expected 8/11/2026

Cut Tape

CHF 0.705

CHF 0.562

CHF 0.514

CHF 0.398

View

Reel

CHF 0.293

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: CHF 0.547
20’830Expected 8/13/2026

Mfr. Part No.
2920L030DR

Mouser Part No
576-2920L030

Littelfuse

Resettable Fuses - PPTC 0.30A 60V 2920

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Datasheet

20’830Expected 8/13/2026

Cut Tape

CHF 0.547

CHF 0.445

CHF 0.411

CHF 0.341

Reel

CHF 0.284

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 1.10A 33V 2920

2920L100PR
Littelfuse
1: CHF 0.674
3’927In Stock
32’000On Order

Mfr. Part No.
2920L100PR

Mouser Part No
576-2920L100

Littelfuse

Resettable Fuses - PPTC 1.10A 33V 2920

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Datasheet

3’927In Stock

32’000On Order

Cut Tape

CHF 0.674

CHF 0.49

CHF 0.456

CHF 0.42

Reel

CHF 0.285

View

MouseReel Available

Min.: 1
Mult.: 1

: 2’000

2920L

SMD/SMT

1.1 A

33 VDC

2.2 A

40 A

410 mOhms

2920 (7450 metric)

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Resettable Fuses - PPTC PTC 15V 2920 3A

2920L300/15DR
Littelfuse
1: CHF 0.714
17’942Expected 11/3/2026

Mfr. Part No.
2920L300/15DR

Mouser Part No
576-2920L300/15DR

Littelfuse

Resettable Fuses - PPTC PTC 15V 2920 3A

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Datasheet

17’942Expected 11/3/2026

Cut Tape

CHF 0.714

CHF 0.659

CHF 0.538

CHF 0.495

View

Reel

CHF 0.384

MouseReel Available

Min.: 1
Mult.: 1

: 1’500

2920L

SMD/SMT

3 A

15 VDC

5 A

40 A

48 mOhms

2920 (7450 metric)

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Resettable Fuses - PPTC 1.35A 60V RADIAL

60R135XF
Littelfuse
1: CHF 0.809
8’167On Order

Mfr. Part No.
60R135XF

Mouser Part No
576-60R135

Littelfuse

Resettable Fuses - PPTC 1.35A 60V RADIAL

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Datasheet

8’167On Order

CHF 0.809

CHF 0.742

CHF 0.585

CHF 0.525

CHF 0.487

Min.: 1
Mult.: 1

60R

PCB Mount

Radial

1.35 A

60 VDC

2.7 A

40 A

300 mOhms

- 40 C

+ 85 C

5.1 mm

Bulk

Resettable Fuses - PPTC 1.6A 30V 100A Imax

RUEF160
Littelfuse
1: CHF 0.388
16’452Expected 8/17/2026

Mfr. Part No.
RUEF160

Mouser Part No
650-RUEF160

Littelfuse

Resettable Fuses - PPTC 1.6A 30V 100A Imax

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Datasheet

16’452Expected 8/17/2026

CHF 0.388

CHF 0.354

CHF 0.296

CHF 0.265

View

Min.: 1
Mult.: 1

RUEF

PCB Mount

Radial

1.6 A

30 VDC

3.2 A

100 A

110 mOhms

- 40 C

+ 85 C

5.8 mm

Bulk

Resettable Fuses - PPTC RESETTABLE FUSE 220VOLT 25OHM

CMF-RL25U-0
Bourns
1: CHF 0.563
14’000Expected 11/16/2026

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

14’000Expected 11/16/2026

CHF 0.563

CHF 0.505

CHF 0.43

CHF 0.369

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 60V/250V .080A TELECOM

250R080U
Littelfuse
1: CHF 0.619
1’474Expected 8/13/2026

Mfr. Part No.
250R080U

Mouser Part No
576-250R080U

Littelfuse

Resettable Fuses - PPTC 60V/250V .080A TELECOM

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Datasheet

1’474Expected 8/13/2026

CHF 0.619

CHF 0.569

CHF 0.473

CHF 0.436

View

Min.: 1
Mult.: 1

250R

PCB Mount

Radial

80 mA

60 VDC

160 mA

3 A

33 Ohms

- 40 C

+ 85 C

5.1 mm

Bulk

Resettable Fuses - PPTC 60V .10A RADIAL LEAD

60R010XPR
Littelfuse
1: CHF 0.586
3’700Expected 12/1/2026

Mfr. Part No.
60R010XPR

Mouser Part No
576-60R010XPR

Littelfuse

Resettable Fuses - PPTC 60V .10A RADIAL LEAD

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Datasheet

3’700Expected 12/1/2026

CHF 0.586

CHF 0.532

CHF 0.444

CHF 0.408

View

Reel

CHF 0.259

Min.: 1
Mult.: 1

: 2’000

60R

PCB Mount

Radial

100 mA

60 VDC

200 mA

40 A

7.5 Ohms

- 40 C

+ 85 C

5.1 mm

Ammo Pack

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

MF-RX300/72-0-14
Bourns
6’000: CHF 0.285
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

CHF 0.285

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: CHF 0.396
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

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Datasheet

Product Comments

Non-Stocked Lead-Time 17 Weeks

Cut Tape

CHF 0.396

CHF 0.365

CHF 0.303

CHF 0.276

View

Reel

CHF 0.17

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: CHF 1.20
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

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Datasheet

Product Comments

Non-Stocked Lead-Time 17 Weeks

CHF 1.20

CHF 0.996

CHF 0.762

CHF 0.703

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: CHF 0.634
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

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Datasheet

Non-Stocked Lead-Time 17 Weeks

CHF 0.634

CHF 0.583

CHF 0.484

CHF 0.446

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: CHF 0.753
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

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Datasheet

Non-Stocked

CHF 0.753

CHF 0.573

CHF 0.537

CHF 0.406

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