Circuit Protection – Mouser United Kingdom

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

Smart Thermostat Solutions

Littelfuse Smart Thermostat Solutions components allow designers to implement Internet of Things (IoT) solutions to boost energy efficiency and monitor energy usage. Littelfuse Smart Thermostat solutions complement other Smart Building features, including safety and security systems.

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

Types of Circuit Protection

List Images

Results: 627

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 #

ESD Protection Diodes / TVS Diodes 400W 60V 5% Uni-Directional

SMAJ60A
Littelfuse
1: £0.142
12,112In Stock
15,000Expected 14/04/2026

Mfr. Part No.
SMAJ60A

Mouser Part No
576-SMAJ60A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 60V 5% Uni-Directional

Learn More

Datasheet

12,112In Stock

15,000Expected 14/04/2026

Cut Tape

£0.142

£0.095

£0.071

£0.065

Reel

£0.053

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 60V 5% Bi-Directional

SMAJ60CA
Littelfuse
1: £0.217
17,115In Stock
14,900Expected 26/02/2026

Mfr. Part No.
SMAJ60CA

Mouser Part No
576-SMAJ60CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 60V 5% Bi-Directional

Learn More

Datasheet

17,115In Stock

14,900Expected 26/02/2026

Cut Tape

£0.217

£0.155

£0.072

£0.071

£0.069

Reel

£0.061

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 7V 5% Uni-Directional

SMAJ7.0A
Littelfuse
1: £0.142
11,874In Stock

Mfr. Part No.
SMAJ7.0A

Mouser Part No
576-SMAJ7.0A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 7V 5% Uni-Directional

Learn More

Datasheet

11,874In Stock

Cut Tape

£0.142

£0.11

£0.099

£0.077

View

Reel

£0.053

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 7V 5% Bi-Directional

SMAJ7.0CA
Littelfuse
1: £0.248
9,595In Stock

Mfr. Part No.
SMAJ7.0CA

Mouser Part No
576-SMAJ7.0CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 7V 5% Bi-Directional

Learn More

Datasheet

9,595In Stock

Cut Tape

£0.248

£0.167

£0.101

£0.081

View

Reel

£0.065

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 7.5V 5% Uni-Directional

SMAJ7.5A
Littelfuse
1: £0.315
8,490In Stock

Mfr. Part No.
SMAJ7.5A

Mouser Part No
576-SMAJ7.5A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 7.5V 5% Uni-Directional

Learn More

Datasheet

8,490In Stock

Cut Tape

£0.315

£0.212

£0.093

£0.092

Reel

£0.072

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 7.5V 5% Bi-Directional

SMAJ7.5CA
Littelfuse
1: £0.233
4,974In Stock
5,000Expected 18/03/2026

Mfr. Part No.
SMAJ7.5CA

Mouser Part No
576-SMAJ7.5CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 7.5V 5% Bi-Directional

Learn More

Datasheet

4,974In Stock

5,000Expected 18/03/2026

Cut Tape

£0.233

£0.156

£0.082

£0.079

View

Reel

£0.065

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 70V 5% Uni-Directional

SMAJ70A
Littelfuse
1: £0.142
11,475In Stock

Mfr. Part No.
SMAJ70A

Mouser Part No
576-SMAJ70A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 70V 5% Uni-Directional

Learn More

Datasheet

11,475In Stock

Cut Tape

£0.142

£0.105

£0.073

£0.07

Reel

£0.059

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 70V 5% Bi-Directional

SMAJ70CA
Littelfuse
1: £0.12
5,407In Stock

Mfr. Part No.
SMAJ70CA

Mouser Part No
576-SMAJ70CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 70V 5% Bi-Directional

Learn More

Datasheet

5,407In Stock

Cut Tape

£0.12

£0.095

£0.073

£0.071

Reel

£0.067

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 75V 5% Uni-Directional

SMAJ75A
Littelfuse
1: £0.173
8,524In Stock

Mfr. Part No.
SMAJ75A

Mouser Part No
576-SMAJ75A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 75V 5% Uni-Directional

Learn More

Datasheet

8,524In Stock

Cut Tape

£0.173

£0.121

£0.072

£0.067

Reel

£0.065

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 75V 5% Bi-Directional

SMAJ75CA
Littelfuse
1: £0.315
5,770In Stock

Mfr. Part No.
SMAJ75CA

Mouser Part No
576-SMAJ75CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 75V 5% Bi-Directional

Learn More

Datasheet

5,770In Stock

Cut Tape

£0.315

£0.197

£0.126

£0.094

Reel

£0.062

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 78V 5% Uni-Directional

SMAJ78A
Littelfuse
1: £0.233
4,162In Stock

Mfr. Part No.
SMAJ78A

Mouser Part No
576-SMAJ78A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 78V 5% Uni-Directional

Learn More

Datasheet

4,162In Stock

Cut Tape

£0.233

£0.158

£0.126

£0.095

Reel

£0.069

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 8V 5% Bi-Directional

SMAJ8.0CA
Littelfuse
1: £0.196
7,971In Stock

Mfr. Part No.
SMAJ8.0CA

Mouser Part No
576-SMAJ8.0CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 8V 5% Bi-Directional

Learn More

Datasheet

7,971In Stock

Cut Tape

£0.196

£0.134

£0.072

Reel

£0.067

£0.065

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 8.5V 5% Bi-Directional

SMAJ8.5CA
Littelfuse
1: £0.292
8,182In Stock

Mfr. Part No.
SMAJ8.5CA

Mouser Part No
576-SMAJ8.5CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 8.5V 5% Bi-Directional

Learn More

Datasheet

8,182In Stock

Cut Tape

£0.292

£0.197

£0.079

£0.075

Reel

£0.071

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 85V 5% Uni-Directional

SMAJ85A
Littelfuse
1: £0.24
8,460In Stock
4,895Expected 18/03/2026

Mfr. Part No.
SMAJ85A

Mouser Part No
576-SMAJ85A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 85V 5% Uni-Directional

Learn More

Datasheet

8,460In Stock

4,895Expected 18/03/2026

Cut Tape

£0.24

£0.173

£0.113

£0.09

Reel

£0.065

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 9V 5% Bi-Directional

SMAJ9.0CA
Littelfuse
1: £0.233
10,628In Stock

Mfr. Part No.
SMAJ9.0CA

Mouser Part No
576-SMAJ9.0CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 9V 5% Bi-Directional

Learn More

Datasheet

10,628In Stock

Cut Tape

£0.233

£0.153

£0.074

£0.073

£0.072

Reel

£0.065

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 90V 5% Uni-Directional

SMAJ90A
Littelfuse
1: £0.15
4,961In Stock
5,000Expected 20/04/2026

Mfr. Part No.
SMAJ90A

Mouser Part No
576-SMAJ90A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 90V 5% Uni-Directional

Learn More

Datasheet

4,961In Stock

5,000Expected 20/04/2026

Cut Tape

£0.15

£0.111

£0.078

£0.075

Reel

£0.059

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 90V 5% Bi-Directional

SMAJ90CA
Littelfuse
1: £0.24
4,176In Stock
5,000Expected 26/02/2026

Mfr. Part No.
SMAJ90CA

Mouser Part No
576-SMAJ90CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 90V 5% Bi-Directional

Learn More

Datasheet

4,176In Stock

5,000Expected 26/02/2026

Cut Tape

£0.24

£0.157

£0.074

£0.071

Reel

£0.061

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 200W 43V 5% Uni-directional

SMF43A
Littelfuse
1: £0.338
2,500In Stock

Mfr. Part No.
SMF43A

Mouser Part No
576-SMF43A

Littelfuse

ESD Protection Diodes / TVS Diodes 200W 43V 5% Uni-directional

Learn More

Datasheet

2,500In Stock

Cut Tape

£0.338

£0.212

£0.126

£0.098

£0.091

Reel

£0.062

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 24V 100W

SP24-01WTG-C-HV
Littelfuse
1: £0.248
16,618In Stock

Mfr. Part No.
SP24-01WTG-C-HV

Mouser Part No
576-SP24-01WTG-C-HV

Littelfuse

ESD Protection Diodes / TVS Diodes 24V 100W

Learn More

Datasheet

16,618In Stock

Cut Tape

£0.248

£0.151

£0.062

£0.058

Reel

£0.043

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

Resettable Fuses - PPTC FEMTOSMDC010F/15-2

FEMTOSMDC010F/15-2
Littelfuse
1: £0.526
2,160In Stock

Mfr. Part No.
FEMTOSMDC010F/15-2

Mouser Part No
650-FEMTOSMDC010F152

Littelfuse

Resettable Fuses - PPTC FEMTOSMDC010F/15-2

Learn More

Datasheet

2,160In Stock

Cut Tape

£0.526

£0.485

£0.402

£0.372

View

Reel

£0.29

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Resettable Fuses - PPTC 3 Ohms 40 A 9 VDC - 40 C+ 85 C

FEMTOSMDC020F-2
Littelfuse
1: £0.533
2,759In Stock

Mfr. Part No.
FEMTOSMDC020F-2

Mouser Part No
650-FEMTOSMDC020F-2

Littelfuse

Resettable Fuses - PPTC 3 Ohms 40 A 9 VDC - 40 C+ 85 C

Learn More

Datasheet

2,759In Stock

Cut Tape

£0.533

£0.495

£0.421

£0.391

View

Reel

£0.352

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

Resettable Fuses - PPTC 6V 100A 0.8Ohms

PICOSMDC050S-2
Littelfuse
1: £0.346
4,721In Stock

Mfr. Part No.
PICOSMDC050S-2

Mouser Part No
650-PICOSMDC050S-2

Littelfuse

Resettable Fuses - PPTC 6V 100A 0.8Ohms

Learn More

Datasheet

4,721In Stock

Cut Tape

£0.346

£0.315

£0.262

£0.242

View

Reel

£0.207

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

Resettable Fuses - PPTC 170 mOhms 40 A 6 VDC - 40 C+ 85 C

PICOSMDC110S-2
Littelfuse
1: £0.45
179In Stock
6,000Expected 18/03/2026

Mfr. Part No.
PICOSMDC110S-2

Mouser Part No
650-PICOSMDC110S-2

Littelfuse

Resettable Fuses - PPTC 170 mOhms 40 A 6 VDC - 40 C+ 85 C

Learn More

Datasheet

179In Stock

6,000Expected 18/03/2026

Cut Tape

£0.45

£0.449

£0.375

£0.346

Reel

£0.209

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

Resettable Fuses - PPTC SMDC075F-2

SMDC075F-2
Littelfuse
1: £0.533
1,685In Stock

Mfr. Part No.
SMDC075F-2

Mouser Part No
650-SMDC075F-2

Littelfuse

Resettable Fuses - PPTC SMDC075F-2

Learn More

Datasheet

1,685In Stock

Cut Tape

£0.533

£0.492

£0.409

£0.377

View

Reel

£0.251

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Resettable Fuses - PPTC 150 mOhms 40 A 33 VDC - 40 C+ 85 C

SMDC185F/33-2
Littelfuse
1: £0.398
3,656In Stock
4,000Expected 21/04/2026

Mfr. Part No.
SMDC185F/33-2

Mouser Part No
650-SMDC185F/33-2

Littelfuse

Resettable Fuses - PPTC 150 mOhms 40 A 33 VDC - 40 C+ 85 C

Learn More

Datasheet

3,656In Stock

4,000Expected 21/04/2026

Cut Tape

£0.398

£0.362

£0.307

£0.286

View

Reel

£0.228

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Smart Thermostat Solutions

Types of Circuit Protection

Customer Service Office

Company

Resources

Support