1.25 A Fuses 748

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Part RoHS Manufacturer Circuit Protection Type Mounting Feature Rated AC Voltage Rated DC Voltage Rated Current Terminal Shape Nominal Joule Integral Minimum Operating Temperature Terminal Finish Rated Breaking Capacity Manufacturer Series Trip Time/Delay Additional Features Pre Arcing Rating (A2/s) Packing Method Body Length/Diameter Body Width Fuse Class JESD-609 Code Rated Voltage Resistance Minimum Pre Arcing Time Fuse Size Built-in Features Dimensions Body Height Reference Standard Maximum Operating Temperature Blow Characteristic

BK/S506-1.25-R

Eaton Corporation

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

10.05 J

Nickel

35 A

10.05

Bulk

0.205 in (5.2 mm)

250 V

20 ms

0.197 x 0.787 in (5 x 20 mm)

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

BSI; CCC; CSA; IMQ; PSE; SEMKO; UL; VDE

Time Delay

C2Q1.25

Bel Fuse

Electric Fuse

Surface Mount

32 V

63 V

1.25 A

Wraparound

4 mJ

-55 °C (-67 °F)

Tin Over Nickel

35 A

200 ms

Interrupting Current Max(DC): 50 A, Pre Arcing Time: Open within 0.2 s at 300% Rated Current

Tape And Reel, 7 inch

0.063 in (1.6 mm)

0.032 in (0.82 mm)

e3

32 V

0603

0.063 x 0.032 x 0.019 in (1.6 x 0.82 x 0.48 mm)

0.019 in (0.48 mm)

CUL; UL

125 °C (257 °F)

Very Fast

FRN-R-1-1/4

Eaton Corporation

Electric Fuse

Inline/Holder

250 V

125 V

1.25 A

End Cap

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

Box

0.56 in (14.22 mm)

RK5

250 V

0.563 x 2 in (14.3 x 50.8 mm)

2 in (50.8 mm)

CE; CSA; UL

Time Delay

02131.25MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

27.15 J

-55 °C (-67 °F)

Nickel

35 A

20 ms

27.15

Bulk

0.205 in (5.2 mm)

250 V

0.197 x 0.787 in (5 x 20 mm)

0.228 x 0.886 in (5.8 x 22.5 mm)

0.787 in (20 mm)

CCC; CE; CSA; PSE; SEMKO; SEV; UL; VDE

125 °C (257 °F)

Time Lag

0685T1250-01

Bel Fuse

Electric Fuse

Surface Mount

63 V

63 V

1.25 A

Wraparound

200 mJ

-55 °C (-67 °F)

Tin Over Nickel

50 A

2 ms

Tape And Reel, 7 inch

0.126 in (3.2 mm)

0.062 in (1.58 mm)

e3

63 V

1206

0.025 in (0.63 mm)

AEC-Q200; TUV; UL

125 °C (257 °F)

Slow

04641.25DR

Littelfuse

Electric Fuse

Surface Mount

250 V

1.25 A

End Cap

1.2 J

-55 °C (-67 °F)

Silver

100 A

0.98

Tape And Reel

0.476 in (12.1 mm)

0.177 in (4.5 mm)

e4

250 V

Nano

0.476 x 0.177 x 0.177 in (12.1 x 4.5 x 4.5 mm)

0.177 in (4.5 mm)

PSE; UMF

125 °C (257 °F)

Fast

SF-2410FP125W-2

Bourns

Electric Fuse

Surface Mount

250 V

125 V

1.25 A

Wraparound

970 mJ

-55 °C (-67 °F)

Tin Over Nickel

100 A

10 ms

Tape And Reel, 7 inch

0.24 in (6.1 mm)

0.098 in (2.49 mm)

2410

0.085 in (2.16 mm)

TUV; UL

125 °C (257 °F)

Fast

04531.25MR

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

1.25 A

Wraparound

664 mJ

-55 °C (-67 °F)

Silver

50 A

5 s

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

e4

125 V

Nano

0.24 x 0.106 x 0.106 in (6.1 x 2.69 x 2.69 mm)

0.106 in (2.69 mm)

CE; CSA; CUL; PSE; TUV; UL

125 °C (257 °F)

Very Fast

04941.25NRHF

Littelfuse

Electric Fuse

Surface Mount

32 V

32 V

1.25 A

Wraparound

51.8 mJ

-55 °C (-67 °F)

35 A

Tape And Reel

0.063 in (1.6 mm)

0.032 in (0.813 mm)

200 ms

0.063 x 0.032 x 0.012 in (1.6 x 0.813 x 0.305 mm)

0.012 in (0.305 mm)

CSA; UL

90 °C (194 °F)

Fast

02341.25MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

2.06 J

-55 °C (-67 °F)

Tin

100 A

400 ms

3.39

Bulk

0.205 in (5.2 mm)

e3

250 V

0.197 x 0.787 in (5 x 20 mm)

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CE; CSA; PSE; UL

125 °C (257 °F)

Medium

03081.25UR

Littelfuse

Electric Fuse

Surface Mount

24 V

30 V

1.25 A

Wraparound

220 mJ

-40 °C (-40 °F)

50 A

1 m

Tape And Reel

0.213 in (5.4 mm)

0.15 in (3.8 mm)

0.144 in (3.65 mm)

CUL; IEC; UL

70 °C (158 °F)

03081.25.UR

Littelfuse

Electric Fuse

Surface Mount

24 V

30 V

1.25 A

Wraparound

220 mJ

-40 °C (-40 °F)

50 A

1 m

Tape And Reel

0.213 in (5.4 mm)

0.15 in (3.8 mm)

0.144 in (3.65 mm)

CUL; IEC; UL

70 °C (158 °F)

74A-1-1/4

Eaton Corporation

Electric Fuse

Inline/Holder

60 V

1.25 A

End Cap

0.281 in (7.14 mm)

0.281 x 1.25 in (7.14 x 31.75 mm)

1.25 in (31.75 mm)

CE; UL

Fast

SS-5H-1.25A-BK

Eaton Corporation

Electric Fuse

Through Hole Mount

300 V

1.25 A

Pin Wire

12.75 J

-40 °C (-40 °F)

100 A

Bulk

0.335 in (8.5 mm)

0.169 in (4.3 mm)

250 V

0.335 x 0.169 x 0.329 in (8.5 x 4.3 x 8.35 mm)

0.329 in (8.35 mm)

CQC; IEC; KC; PSE; TUV; UL

85 °C (185 °F)

Time Delay

SS-5H-1-25A-BK

Eaton Corporation

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

12.8 J

-40 °C (-40 °F)

100 A

Bag

0.335 in (8.5 mm)

0.169 in (4.3 mm)

20 ms

0.309 in (7.85 mm)

CCC; CUL; KC; PSE; TUV; UL; VDE

125 °C (257 °F)

Time Delay

SF-0603S125-2

Bourns

Electric Fuse

Surface Mount

35 V

32 V

1.25 A

Wraparound

57 mJ

-20 °C (-4 °F)

Tin with Nickel barrier

50 A

5 s

Tape And Reel, 7 inch

0.063 in (1.6 mm)

0.031 in (0.8 mm)

e3

0603

0.063 x 0.031 x 0.018 in (1.6 x 0.8 x 0.45 mm)

0.018 in (0.45 mm)

CUL; UL

105 °C (221 °F)

Slow

02161.25HXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

180 mJ

-55 °C (-67 °F)

Nickel

1.5 kA

0.48

Bulk

0.205 in (5.2 mm)

250 V

0.197 x 0.787 in (5 x 20 mm)

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CCC; CE; CSA; IEC; KC; PSE; SEMKO; SEV; UL; VDE

125 °C (257 °F)

Fast

02161.25MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

180 mJ

-55 °C (-67 °F)

Nickel

1.5 kA

20 ms

0.48

Bulk

0.205 in (5.2 mm)

250 V

0.197 x 0.787 in (5 x 20 mm)

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CCC; CE; CSA; IEC; KC; PSE; SEMKO; SEV; UL; VDE

125 °C (257 °F)

Fast

02181.25MXEP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

12.65 J

-55 °C (-67 °F)

Tin

35 A

20 ms

Bulk

0.217 in (5.5 mm)

e3

0.197 x 0.787 in (5 x 20 mm)

0.228 x 0.886 in (5.8 x 22.5 mm)

0.846 in (21.5 mm)

CCC; CE; CSA; KC; PSE; SEMKO; SEV; UL; VDE

125 °C (257 °F)

Time Lag

02301.25DRT1P

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

1.25 A

Pin Wire

9.8 J

-55 °C (-67 °F)

Matte Tin

100 A

Rated Breaking Capacity at 125 VDC: 10000 A

Tape And Reel

0.185 in (4.7 mm)

e3

0.185 x 0.57 in (4.7 x 14.48 mm)

0.57 in (14.48 mm)

CE; CSA; PSE; UL

125 °C (257 °F)

Time Lag

02301.25HXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

1.25 A

Pin Wire

9.8 J

-55 °C (-67 °F)

Matte Tin

100 A

Rated Breaking Capacity at 125 VDC: 10000 A

Bulk

0.185 in (4.7 mm)

e3

Indicator

0.185 x 0.57 in (4.7 x 14.48 mm)

0.57 in (14.48 mm)

CE; CSA; PSE; UL

125 °C (257 °F)

Time Lag

02511.25MRT1L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

1.25 A

Pin Wire

390 mJ

-55 °C (-67 °F)

Tin

50 A

1 s

Pre Arcing Time: Open within 1 s at 200% Rated Current

Tape And Reel

0.11 in (2.8 mm)

e3

Pico

0.11 x 0.28 in (2.8 x 7.11 mm)

0.28 in (7.11 mm)

CSA; CUL; PSE; UL

125 °C (257 °F)

Very Fast

03131.25MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

24 J

-60 °C (-76 °F)

Nickel

100 A

5 s

24

Bulk

0.25 in (6.35 mm)

Supplemental

250 V

3AG

1.25 x 0.25 in (31.75 x 6.35 mm)

1.25 in (31.75 mm)

CE; CSA; PSE; UL

125 °C (257 °F)

Time Lag

04381.25WR

Littelfuse

Electric Fuse

Surface Mount

32 V

1.25 A

Wraparound

51 mJ

-55 °C (-67 °F)

Tin Over Nickel

50 A

4 h

0.051

Tape And Reel

0.061 in (1.54 mm)

0.033 in (0.85 mm)

e3

63 V

200 mΩ

0603

0.061 x 0.033 x 0.02 in (1.54 x 0.85 x 0.5 mm)

0.02 in (0.5 mm)

CSA; UL

150 °C (302 °F)

Fast

08851.25DR

Littelfuse

Electric Fuse

Surface Mount

350 V

500 V

1.25 A

Wraparound

1.25 J

-40 °C (-40 °F)

Tin

100 A

1 s

Tape And Reel

0.428 in (10.86 mm)

0.188 in (4.78 mm)

e3

Nano

0.428 x 0.188 x 0.188 in (10.86 x 4.78 x 4.78 mm)

0.188 in (4.78 mm)

CUL; TUV; UL

105 °C (221 °F)

3121.25P

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

1.45 J

Nickel

35 A

0.25 in (6.35 mm)

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE; CSA; UL

Fast

37411250410

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

4.453 J

-40 °C (-40 °F)

Matte Tin

50 A

1 m

Bulk

0.335 in (8.5 mm)

e3

250 V

TR5

0.335 x 0.315 in (8.5 x 8 mm)

0.315 in (8 mm)

CSA, UL

85 °C (185 °F)

Time Lag

38211250000

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Wire

6.88 J

-40 °C (-40 °F)

Tin

100 A

150 ms

4.5

Ammo Pack

0.335 in (8.5 mm)

e3

250 V

TR5

0.335 x 0.315 in (8.5 x 8 mm)

0.315 in (8 mm)

CCC; CE; CUL; PSE; UL; VDE

85 °C (185 °F)

Time Lag

SF-1206F125-2

Bourns

Electric Fuse

Surface Mount

63 V

1.25 A

Wraparound

62 mJ

-20 °C (-4 °F)

Tin Over Nickel

50 A

1 m

Tape And Reel, 7 inch

0.122 in (3.1 mm)

0.061 in (1.55 mm)

e3

1206

0.122 x 0.061 x 0.024 in (3.1 x 1.55 x 0.6 mm)

0.024 in (0.6 mm)

UL

105 °C (221 °F)

Fast

TR2/TCP1.25-R

Eaton Corporation

Electric Fuse

Surface Mount

250 V

1.25 A

End Cap

22.2 J

Tin Over Nickel

50 A

Tape And Reel

0.109 in (2.77 mm)

0.109 in (2.77 mm)

e3

0.109 x 0.109 x 0.405 in (2.77 x 2.77 x 10.29 mm)

0.405 in (10.29 mm)

CSA; UL

CC06FA1-25A-TR

Eaton Corporation

Electric Fuse

Surface Mount

63 V

1.25 A

Wraparound

8 mJ

-55 °C (-67 °F)

50 A

1 m

Tape And Reel, Paper, 7 inch

0.063 in (1.6 mm)

0.032 in (0.81 mm)

0603

0.019 in (0.48 mm)

AEC-Q200; UL

125 °C (257 °F)

Fast

SR-5-1.25A-AP

Eaton Corporation

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

13 J

-40 °C (-40 °F)

35 A

Ammo Pack

0.335 in (8.5 mm)

20 ms

0.335 x 0.319 in (8.5 x 8.1 mm)

0.319 in (8.1 mm)

CCC; CUL; KC; PSE; SEMKO; UL; VDE

125 °C (257 °F)

Time Delay

SS-5H-1-25A-APH

Eaton Corporation

Electric Fuse

Through Hole Mount

300 V

1.25 A

Pin Wire

12.8 J

-40 °C (-40 °F)

100 A

Ammo Pack

0.335 in (8.5 mm)

0.169 in (4.3 mm)

20 ms

0.309 in (7.85 mm)

CCC; CUL; KC; PSE; TUV; UL; VDE

125 °C (257 °F)

Time Delay

SS-5H-1.25A-APH

Eaton Corporation

Electric Fuse

Through Hole Mount

300 V

1.25 A

Pin Wire

12.75 J

-40 °C (-40 °F)

100 A

Ammo Pack

0.335 in (8.5 mm)

0.169 in (4.3 mm)

300 V

0.335 x 0.169 x 0.329 in (8.5 x 4.3 x 8.35 mm)

0.329 in (8.35 mm)

CQC; IEC; KC; PSE; TUV; UL

85 °C (185 °F)

Time Delay

B1250T

Bourns

Electric Fuse

Surface Mount

600 V

1.25 A

End Cap

14 J

-55 °C (-67 °F)

Tin with Nickel barrier

Tape And Reel

0.38 in (9.65 mm)

0.12 in (3.05 mm)

e3

600 V

0.38 x 0.12 x 0.12 in (9.65 x 3.05 x 3.05 mm)

0.12 in (3.05 mm)

UL

125 °C (257 °F)

SF-1206S125-2

Bourns

Electric Fuse

Surface Mount

63 V

1.25 A

Wraparound

155 mJ

-20 °C (-4 °F)

Tin Over Nickel

50 A

5 s

Tape And Reel, 7 inch

0.122 in (3.1 mm)

0.061 in (1.55 mm)

e3

1206

0.122 x 0.061 x 0.024 in (3.1 x 1.55 x 0.6 mm)

0.024 in (0.6 mm)

UL

105 °C (221 °F)

Slow

SF-1206SP125M-2

Bourns

Electric Fuse

Surface Mount

63 V

1.25 A

Wraparound

222 mJ

-55 °C (-67 °F)

Tin Over Nickel

50 A

2 ms

Tape And Reel, 7 inch

0.126 in (3.2 mm)

0.063 in (1.6 mm)

e3

1 ms

1206

0.126 x 0.063 x 0.038 in (3.2 x 1.6 x 0.97 mm)

0.038 in (0.97 mm)

CUL; UL

125 °C (257 °F)

Time Lag

SF-2410SP125W-2

Bourns

Electric Fuse

Surface Mount

250 V

1.25 A

Wraparound

1 J

-55 °C (-67 °F)

Tin Over Nickel

100 A

1 ms

Tape And Reel, 7 inch

0.24 in (6.1 mm)

0.098 in (2.49 mm)

2410

0.085 in (2.16 mm)

UL; VDE

125 °C (257 °F)

Time Lag

02371.25

Littelfuse

Electric Fuse

1.25 A

End Cap

10 kA

0.205 in (5.2 mm)

Supplemental

125 V

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CE, CSA, PSE, UL

Medium

02511.25PAT1HF

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

1.25 A

Pin Wire

390 mJ

-55 °C (-67 °F)

Matte Tin

50 A

251

Rated Breaking Capacity at 125 VDC: 300 A

Ammo Pack

0.11 in (2.8 mm)

e3

0.11 x 0.28 in (2.8 x 7.11 mm)

0.28 in (7.11 mm)

CSA; PSE; UL

125 °C (257 °F)

Very Fast

7945816034

Littelfuse

Electric Fuse

Inline/Holder

500 V

300 V

1.25 A

End Cap

-55 °C (-67 °F)

10 kA

Rated Breaking Capacity at 300 VDC: 10000 A

Bulk

0.406 in (10.31 mm)

0.394 x 1.496 in (10 x 38 mm)

1.5 in (38.1 mm)

CSA; UL

125 °C (257 °F)

Time Delay

IDSR1.25

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

1.25 A

End Cap

200 kA

Rated Breaking Capacity at 600 VDC: 20000 A

Bulk

0.815 in (20.7 mm)

0.752 x 5 in (19.1 x 127 mm)

5 in (127 mm)

CSA; UL

Time Delay

03121.25MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

1.45 J

-55 °C (-67 °F)

Tin

100 A

5 s

Bulk

0.25 in (6.35 mm)

e3

250 V

3AG

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE; CSA; KC; PSE; UL

125 °C (257 °F)

Fast

04401.25WR

Littelfuse

Electric Fuse

Surface Mount

50 V

50 V

1.25 A

Wraparound

402 mJ

-55 °C (-67 °F)

Tin

50 A

4 h

0.402

Tape And Reel

0.126 in (3.2 mm)

0.064 in (1.63 mm)

e3

50 V

1206

0.126 x 0.064 x 0.032 in (3.2 x 1.63 x 0.82 mm)

0.032 in (0.82 mm)

CSA; UL

150 °C (302 °F)

06641.25MALL

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

6.3 J

-40 °C (-40 °F)

Tin

100 A

664

Ammo Pack

0.335 in (8.5 mm)

e3

0.335 x 0.333 in (8.5 x 8.45 mm)

0.333 in (8.45 mm)

CCC; CSA; KTL; METI; PSE; UL; VDE

85 °C (185 °F)

Time Lag

02331.25P

Littelfuse

Electric Fuse

Inline/Holder

125 V

1.25 A

End Cap

3.389 J

-55 °C (-67 °F)

Nickel

10 kA

233P

Bulk; Tape And Reel

0.205 in (5.2 mm)

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CE; CSA; KTL; PSE; UL

125 °C (257 °F)

Medium

22051.25MXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

-55 °C (-67 °F)

Nickel

35 A

Bulk

0.185 in (4.7 mm)

0.185 x 0.57 in (4.7 x 14.48 mm)

0.57 in (14.48 mm)

CE; CSA; UL

125 °C (257 °F)

Slow

37311250410

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

200 mJ

-40 °C (-40 °F)

Tin

50 A

5 s

Bulk

0.335 in (8.5 mm)

e3

250 V

TR5

0.335 x 0.315 in (8.5 x 8 mm)

0.315 in (8 mm)

CSA; CUL; UL

85 °C (185 °F)

Very Fast

Fuses

A fuse is an electrical safety device that is designed to protect an electrical circuit from damage caused by overcurrent. Fuses are commonly used in residential, commercial, and industrial electrical systems, and they are an important safety device that helps prevent electrical fires, equipment damage, and personal injury.

A fuse typically consists of a metal wire or filament that is enclosed in a fuse body, which is designed to protect the wire from damage. The fuse is connected in series with the electrical circuit, and when the current flowing through the circuit exceeds a preset level, the wire in the fuse will melt or blow, which opens the circuit and prevents further damage to the electrical system.

Fuses are available in a variety of types and sizes, and they can be classified based on their current rating, voltage rating, and speed of operation. Some common types of fuses include cartridge fuses, blade fuses, and plug fuses.

In addition to protecting electrical systems from overcurrent, fuses can also be used to protect electrical equipment and machinery from damage caused by short circuits or other types of electrical faults. They are a cost-effective and reliable method of electrical protection, and they are widely used in a variety of electrical applications.