.hide-partial { max-height: none; } .show-more { display: none; }

Semitec Circuit Protection

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Circuit Protection

List Images

Results: 457

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

NTC (Negative Temperature Coefficient) Thermistors 50kohm 3%

503NT-4-R025H42G
Semitec
1: $1.48
3,700On Order

Mfr. Part No.
503NT-4-R025H42G

Mouser Part No
954-503NT-4-R025H42G

Semitec

NTC (Negative Temperature Coefficient) Thermistors 50kohm 3%

Datasheet

3,700On Order

$1.48

$1.11

$0.892

$0.837

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 47V 250W

ZS1047U-T
Semitec
1: $1.59
3,110On Order

Mfr. Part No.
ZS1047U-T

Mouser Part No
954-ZS1047U-T

Semitec

ESD Protection Diodes / TVS Diodes 47V 250W

Datasheet

3,110On Order

Cut Tape

$1.59

$1.20

$0.85

$0.635

Reel

$0.555

$0.494

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,500

NTC (Negative Temperature Coefficient) Thermistors 10kohm 0.5%

103AP-2
Semitec
1: $0.691
3,687Expected 2026/04/03

Mfr. Part No.
103AP-2

Mouser Part No
954-103AP-2

Semitec

NTC (Negative Temperature Coefficient) Thermistors 10kohm 0.5%

Learn More

Datasheet

3,687Expected 2026/04/03

$0.691

$0.65

$0.608

$0.578

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 10kohm 2%

103ETB
Semitec
1: $0.795
199Expected 2026/06/17

Mfr. Part No.
103ETB

Mouser Part No
954-103ETB

Semitec

NTC (Negative Temperature Coefficient) Thermistors 10kohm 2%

Learn More

Datasheet

199Expected 2026/06/17

$0.795

$0.747

$0.699

$0.665

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 104kohm 3% 0603

104KT1608T-3P
Semitec
1: $0.222
468Expected 2026/06/05

Mfr. Part No.
104KT1608T-3P

Mouser Part No
954-104KT1608T-3P

Semitec

NTC (Negative Temperature Coefficient) Thermistors 104kohm 3% 0603

Learn More

Datasheet

468Expected 2026/06/05

Cut Tape

$0.222

$0.205

$0.18

$0.171

Reel

$0.129

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

NTC (Negative Temperature Coefficient) Thermistors 10ohms 2amps Clinch lead

10D2-08LC
Semitec
1: $0.865
1,587Expected 2026/04/03

Mfr. Part No.
10D2-08LC

Mouser Part No
954-10D2-08LC

Semitec

NTC (Negative Temperature Coefficient) Thermistors 10ohms 2amps Clinch lead

Datasheet

1,587Expected 2026/04/03

$0.865

$0.663

$0.571

$0.551

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 10ohms 6amps Clinch Short Lead

10D2-18LCS
Semitec
1: $2.63
350Expected 2026/04/03

Mfr. Part No.
10D2-18LCS

Mouser Part No
954-10D2-18LCS

Semitec

NTC (Negative Temperature Coefficient) Thermistors 10ohms 6amps Clinch Short Lead

Datasheet

350Expected 2026/04/03

$2.63

$2.04

$1.80

$1.52

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 10ohms 6amps Straight Lead

10D2-18LD
Semitec
1: $1.69
349Expected 2026/03/06

Mfr. Part No.
10D2-18LD

Mouser Part No
954-10D2-18LD

Semitec

NTC (Negative Temperature Coefficient) Thermistors 10ohms 6amps Straight Lead

Datasheet

349Expected 2026/03/06

$1.69

$1.60

$1.51

$1.43

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 12ohms 5amps Clinch Short Lead

12D2-15LCS
Semitec
1: $1.71
197Expected 2026/03/06

Mfr. Part No.
12D2-15LCS

Mouser Part No
954-12D2-15LCS

Semitec

NTC (Negative Temperature Coefficient) Thermistors 12ohms 5amps Clinch Short Lead

Datasheet

197Expected 2026/03/06

$1.71

$1.28

$1.03

$0.966

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 16ohms 2amps Clinch Short Lead

16D2-07LCS
Semitec
1: $0.655
90On Order

Mfr. Part No.
16D2-07LCS

Mouser Part No
954-16D2-07LCS

Semitec

NTC (Negative Temperature Coefficient) Thermistors 16ohms 2amps Clinch Short Lead

Datasheet

90On Order

$0.655

$0.504

$0.433

$0.356

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 200kohm 0.5%

204AP-2
Semitec
1: $0.691
198Expected 2026/05/15

Mfr. Part No.
204AP-2

Mouser Part No
954-204AP-2

Semitec

NTC (Negative Temperature Coefficient) Thermistors 200kohm 0.5%

Learn More

Datasheet

198Expected 2026/05/15

$0.691

$0.65

$0.608

$0.578

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 20ohms 0.3amps Straight Lead

20D2-05LD
Semitec
1: $0.678
143Expected 2026/06/08

Mfr. Part No.
20D2-05LD

Mouser Part No
954-20D2-05LD

Semitec

NTC (Negative Temperature Coefficient) Thermistors 20ohms 0.3amps Straight Lead

Datasheet

143Expected 2026/06/08

$0.678

$0.521

$0.449

$0.369

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 2ohms 8amps Clinch lead

2D2-15LC
Semitec
1: $1.41
98Expected 2026/04/03

Mfr. Part No.
2D2-15LC

Mouser Part No
954-2D2-15LC

Semitec

NTC (Negative Temperature Coefficient) Thermistors 2ohms 8amps Clinch lead

Datasheet

98Expected 2026/04/03

$1.41

$1.06

$0.848

$0.798

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 30kohm 3%

303ET-2
Semitec
1: $0.959
198Expected 2026/06/02

Mfr. Part No.
303ET-2

Mouser Part No
954-303ET-2

Semitec

NTC (Negative Temperature Coefficient) Thermistors 30kohm 3%

Learn More

Datasheet

198Expected 2026/06/02

$0.959

$0.732

$0.629

$0.607

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 3.3kohm 3%

493NT-4-R100H40G
Semitec
1: $0.795
498Expected 2026/05/13

Mfr. Part No.
493NT-4-R100H40G

Mouser Part No
954-493NT-4-R100H40G

Semitec

NTC (Negative Temperature Coefficient) Thermistors 3.3kohm 3%

Datasheet

498Expected 2026/05/13

$0.795

$0.752

$0.705

$0.671

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 5kohm 1%

502AT-2
Semitec
1: $0.678
2,049On Order

Mfr. Part No.
502AT-2

Mouser Part No
954-502AT-2

Semitec

NTC (Negative Temperature Coefficient) Thermistors 5kohm 1%

Learn More

Datasheet

2,049On Order

$0.678

$0.637

$0.595

$0.568

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 50kohm 3%

503ET-2
Semitec
1: $1.14
150Expected 2026/04/03

Mfr. Part No.
503ET-2

Mouser Part No
954-503ET-2

Semitec

NTC (Negative Temperature Coefficient) Thermistors 50kohm 3%

Learn More

Datasheet

150Expected 2026/04/03

$1.14

$0.866

$0.748

$0.721

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 50kohm 1% 0603

503KT1608T-1P
Semitec
1: $0.222
7,933Expected 2026/05/15

Mfr. Part No.
503KT1608T-1P

Mouser Part No
954-503KT1608T-1P

Semitec

NTC (Negative Temperature Coefficient) Thermistors 50kohm 1% 0603

Learn More

Datasheet

7,933Expected 2026/05/15

Cut Tape

$0.222

$0.209

$0.184

$0.174

Reel

$0.136

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

NTC (Negative Temperature Coefficient) Thermistors 500kohm 3%

504NT-4-R025H45G
Semitec
1: $6.18
433Expected 2026/05/15

Mfr. Part No.
504NT-4-R025H45G

Mouser Part No
954-504NT-4-R025H45G

Semitec

NTC (Negative Temperature Coefficient) Thermistors 500kohm 3%

Datasheet

433Expected 2026/05/15

$6.18

$4.24

$3.95

$0.711

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 5ohms 3amps Clinch Short Lead

5D2-07LCS
Semitec
1: $0.55
294Expected 2026/04/02

Mfr. Part No.
5D2-07LCS

Mouser Part No
954-5D2-07LCS

Semitec

NTC (Negative Temperature Coefficient) Thermistors 5ohms 3amps Clinch Short Lead

Datasheet

294Expected 2026/04/02

$0.55

$0.423

$0.365

$0.30

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 5ohms 4amps Clinch Short Lead

5D2-10LCS
Semitec
1: $0.865
600Expected 2026/04/03

Mfr. Part No.
5D2-10LCS

Mouser Part No
954-5D2-10LCS

Semitec

NTC (Negative Temperature Coefficient) Thermistors 5ohms 4amps Clinch Short Lead

Datasheet

600Expected 2026/04/03

$0.865

$0.665

$0.573

$0.554

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 8ohms 6amps Clinch lead

8D2-18LC
Semitec
1: $2.62
104Expected 2026/05/15

Mfr. Part No.
8D2-18LC

Mouser Part No
954-8D2-18LC

Semitec

NTC (Negative Temperature Coefficient) Thermistors 8ohms 6amps Clinch lead

Datasheet

104Expected 2026/05/15

$2.62

$2.02

$1.69

$1.65

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors AT-4 Shape 2 26AWG 75mm

ED2F103A2-61044
Semitec
1: $0.83
252Expected 2026/05/25

Mfr. Part No.
ED2F103A2-61044

Mouser Part No
954-ED2F103A2-61044

Semitec

NTC (Negative Temperature Coefficient) Thermistors AT-4 Shape 2 26AWG 75mm

Datasheet

252Expected 2026/05/25

$0.83

$0.78

$0.73

$0.697

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors AT-4 Shape 2 26AWG 200mm

ED2F103A2-71044
Semitec
1: $1.64
1,600Expected 2026/03/16

Mfr. Part No.
ED2F103A2-71044

Mouser Part No
954-ED2F103A2-71044

Semitec

NTC (Negative Temperature Coefficient) Thermistors AT-4 Shape 2 26AWG 200mm

Datasheet

1,600Expected 2026/03/16

$1.64

$1.23

$0.984

$0.926

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors AT-4 Shape 2 26AWG 105mm

ED2F103A2-91007
Semitec
1: $1.35
2,270On Order

Mfr. Part No.
ED2F103A2-91007

Mouser Part No
954-ED2F103A2-91007

Semitec

NTC (Negative Temperature Coefficient) Thermistors AT-4 Shape 2 26AWG 105mm

Datasheet

2,270On Order

$1.35

$1.01

$0.809

$0.761

View

Min.: 1
Mult.: 1

Semitec Circuit Protection

Types of Circuit Protection

Customer Service Office

Company

Resources

Support