Circuit Protection – Mouser Canada

.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 28V 5% Uni-Directional

SMAJ28A
Littelfuse
1: $0.368
47,376In Stock

Mfr. Part #
SMAJ28A

Mouser Part #
576-SMAJ28A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 28V 5% Uni-Directional

Learn More

Datasheet

47,376In Stock

Cut Tape

$0.368

$0.281

$0.15

$0.149

Reel

$0.117

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 300V 5% Bi-Directional

SMAJ300CA
Littelfuse
1: $0.798
10,010In Stock
20,000Expected 2026-05-13

Mfr. Part #
SMAJ300CA

Mouser Part #
576-SMAJ300CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 300V 5% Bi-Directional

Learn More

Datasheet

10,010In Stock

20,000Expected 2026-05-13

Cut Tape

$0.798

$0.70

$0.487

$0.379

View

Reel

$0.262

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 30V 5% Uni-Directional

SMAJ30A
Littelfuse
1: $0.368
28,967In Stock
20,000Expected 2026-05-06

Mfr. Part #
SMAJ30A

Mouser Part #
576-SMAJ30A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 30V 5% Uni-Directional

Learn More

Datasheet

28,967In Stock

20,000Expected 2026-05-06

Cut Tape

$0.368

$0.275

$0.155

$0.154

View

Reel

$0.109

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 30V 5% Bi-Directional

SMAJ30CA
Littelfuse
1: $0.384
66,959In Stock
45,000Expected 2026-05-05

Mfr. Part #
SMAJ30CA

Mouser Part #
576-SMAJ30CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 30V 5% Bi-Directional

Learn More

Datasheet

66,959In Stock

45,000Expected 2026-05-05

Cut Tape

$0.384

$0.272

$0.154

$0.152

Reel

$0.124

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 33V 5% Uni-Directional

SMAJ33A
Littelfuse
1: $0.368
44,860In Stock

Mfr. Part #
SMAJ33A

Mouser Part #
576-SMAJ33A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 33V 5% Uni-Directional

Learn More

Datasheet

44,860In Stock

Cut Tape

$0.368

$0.244

$0.141

$0.135

Reel

$0.115

$0.109

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 33V 5% Bi-Directional

SMAJ33CA
Littelfuse
1: $0.445
31,986In Stock
20,000Expected 2026-05-05

Mfr. Part #
SMAJ33CA

Mouser Part #
576-SMAJ33CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 33V 5% Bi-Directional

Learn More

Datasheet

31,986In Stock

20,000Expected 2026-05-05

Cut Tape

$0.445

$0.295

$0.167

$0.166

Reel

$0.134

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 350V 5% Bi-Directional

SMAJ350CA
Littelfuse
1: $0.798
13,903In Stock

Mfr. Part #
SMAJ350CA

Mouser Part #
576-SMAJ350CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 350V 5% Bi-Directional

Learn More

Datasheet

13,903In Stock

Cut Tape

$0.798

$0.474

$0.376

$0.341

View

Reel

$0.307

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 36V 5% Uni-Directional

SMAJ36A
Littelfuse
1: $0.384
25,566In Stock
15,000Expected 2026-04-21

Mfr. Part #
SMAJ36A

Mouser Part #
576-SMAJ36A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 36V 5% Uni-Directional

Learn More

Datasheet

25,566In Stock

15,000Expected 2026-04-21

Cut Tape

$0.384

$0.281

$0.193

$0.173

Reel

$0.121

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 36V 5% Bi-Directional

SMAJ36CA
Littelfuse
1: $0.414
23,651In Stock

Mfr. Part #
SMAJ36CA

Mouser Part #
576-SMAJ36CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 36V 5% Bi-Directional

Learn More

Datasheet

23,651In Stock

Cut Tape

$0.414

$0.29

$0.243

$0.213

Reel

$0.137

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 40V 5% Bi-Directional

SMAJ40CA
Littelfuse
1: $0.353
24,594In Stock
20,000Expected 2026-05-05

Mfr. Part #
SMAJ40CA

Mouser Part #
576-SMAJ40CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 40V 5% Bi-Directional

Learn More

Datasheet

24,594In Stock

20,000Expected 2026-05-05

Cut Tape

$0.353

$0.282

$0.252

$0.192

$0.152

Reel

$0.124

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 440V 5% Bi-Directional

SMAJ440CA
Littelfuse
1: $1.29
12,281In Stock

Mfr. Part #
SMAJ440CA

Mouser Part #
576-SMAJ440CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 440V 5% Bi-Directional

Learn More

Datasheet

12,281In Stock

Cut Tape

$1.29

$0.746

$0.563

$0.433

View

Reel

$0.307

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

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

SMAJ5.0A
Littelfuse
1: $0.368
102,269In Stock

Mfr. Part #
SMAJ5.0A

Mouser Part #
576-SMAJ5.0A

Littelfuse

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

Learn More

Datasheet

102,269In Stock

Cut Tape

$0.368

$0.275

$0.155

$0.154

View

Reel

$0.109

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 58V 5% Uni-Directional

SMAJ58A
Littelfuse
1: $0.338
47,598In Stock

Mfr. Part #
SMAJ58A

Mouser Part #
576-SMAJ58A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 58V 5% Uni-Directional

Learn More

Datasheet

47,598In Stock

Cut Tape

$0.338

$0.241

$0.158

$0.157

Reel

$0.123

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 58V 5% Bi-Directional

SMAJ58CA
Littelfuse
1: $0.583
31,427In Stock
40,000Expected 2026-05-18

Mfr. Part #
SMAJ58CA

Mouser Part #
576-SMAJ58CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 58V 5% Bi-Directional

Learn More

Datasheet

31,427In Stock

40,000Expected 2026-05-18

Cut Tape

$0.583

$0.462

$0.286

$0.226

Reel

$0.152

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 6V 5% Uni-Directional

SMAJ6.0A
Littelfuse
1: $0.246
39,188In Stock

Mfr. Part #
SMAJ6.0A

Mouser Part #
576-SMAJ6.0A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 6V 5% Uni-Directional

Learn More

Datasheet

39,188In Stock

Cut Tape

$0.246

$0.198

$0.15

$0.149

Reel

$0.115

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 6.5V 5% Uni-Directional

SMAJ6.5A
Littelfuse
1: $0.507
25,182In Stock

Mfr. Part #
SMAJ6.5A

Mouser Part #
576-SMAJ6.5A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 6.5V 5% Uni-Directional

Learn More

Datasheet

25,182In Stock

Cut Tape

$0.507

$0.227

$0.154

$0.15

Reel

$0.121

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 64V 5% Uni-Directional

SMAJ64A
Littelfuse
1: $0.491
38,378In Stock

Mfr. Part #
SMAJ64A

Mouser Part #
576-SMAJ64A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 64V 5% Uni-Directional

Learn More

Datasheet

38,378In Stock

Cut Tape

$0.491

$0.333

$0.161

$0.158

View

Reel

$0.109

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 400W 64V 5% Bi-Directional

SMAJ64CA
Littelfuse
1: $0.43
18,529In Stock

Mfr. Part #
SMAJ64CA

Mouser Part #
576-SMAJ64CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 64V 5% Bi-Directional

Learn More

Datasheet

18,529In Stock

Cut Tape

$0.43

$0.307

$0.161

$0.16

$0.152

Reel

$0.124

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

ESD Protection Diodes / TVS Diodes 12V 100W

SP12-01WTG-C-HV
Littelfuse
1: $0.507
124,868In Stock

Mfr. Part #
SP12-01WTG-C-HV

Mouser Part #
576-SP12-01WTG-C-HV

Littelfuse

ESD Protection Diodes / TVS Diodes 12V 100W

Learn More

Datasheet

124,868In Stock

Cut Tape

$0.507

$0.309

$0.114

$0.107

Reel

$0.078

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

ESD Protection Diodes / TVS Diodes TVS ARRAY

SP3213-01UTG
Littelfuse
1: $0.414
86,587In Stock

Mfr. Part #
SP3213-01UTG

Mouser Part #
576-SP3213-01UTG

Littelfuse

ESD Protection Diodes / TVS Diodes TVS ARRAY

Learn More

Datasheet

86,587In Stock

Cut Tape

$0.414

$0.327

$0.27

$0.247

View

Reel

$0.23

MouseReel Available

Min.: 1
Mult.: 1

Reel: 15,000

ESD Protection Diodes / TVS Diodes 36V 100W

SP36-01WTG-C-HV
Littelfuse
1: $0.353
36,587In Stock

Mfr. Part #
SP36-01WTG-C-HV

Mouser Part #
576-SP36-01WTG-C-HV

Littelfuse

ESD Protection Diodes / TVS Diodes 36V 100W

Learn More

Datasheet

36,587In Stock

Cut Tape

$0.353

$0.097

$0.08

Reel

$0.08

$0.078

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

Resettable Fuses - PPTC 15V 50MA-HD 40A MAX

FEMTOSMDC005F-2
Littelfuse
1: $1.01
9,656In Stock

Mfr. Part #
FEMTOSMDC005F-2

Mouser Part #
650-FEMTOSMDC005F-2

Littelfuse

Resettable Fuses - PPTC 15V 50MA-HD 40A MAX

Learn More

Datasheet

9,656In Stock

Cut Tape

$1.01

$0.939

$0.792

$0.735

View

Reel

$0.45

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Resettable Fuses - PPTC 14 Ohms 40 A 12 VDC - 40 C+ 85 C

FEMTOSMDC008F-2
Littelfuse
1: $1.09
5,269In Stock

Mfr. Part #
FEMTOSMDC008F-2

Mouser Part #
650-FEMTOSMDC008F-2

Littelfuse

Resettable Fuses - PPTC 14 Ohms 40 A 12 VDC - 40 C+ 85 C

Learn More

Datasheet

5,269In Stock

Cut Tape

$1.09

$1.01

$0.835

$0.771

View

Reel

$0.45

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Resettable Fuses - PPTC 12V 100MA-HD 40A 0603

FEMTOSMDC010F-2
Littelfuse
1: $1.09
5,793In Stock

Mfr. Part #
FEMTOSMDC010F-2

Mouser Part #
650-FEMTOSMDC010F-2

Littelfuse

Resettable Fuses - PPTC 12V 100MA-HD 40A 0603

Learn More

Datasheet

5,793In Stock

Cut Tape

$1.09

$1.01

$0.835

$0.757

View

Reel

$0.45

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Resettable Fuses - PPTC 5.8 Ohms 40 A 9 VDC - 40 C+ 85 C

FEMTOSMDC012F-2
Littelfuse
1: $1.09
9,682In Stock

Mfr. Part #
FEMTOSMDC012F-2

Mouser Part #
650-FEMTOSMDC012F-2

Littelfuse

Resettable Fuses - PPTC 5.8 Ohms 40 A 9 VDC - 40 C+ 85 C

Learn More

Datasheet

9,682In Stock

Cut Tape

$1.09

$1.01

$0.835

$0.771

View

Reel

$0.542

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

Smart Thermostat Solutions

Types of Circuit Protection

Mouser Electronics®

Company

Resources

Support