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Circuit Protection

Circuit Protection devices and components are available at Mouser Electronics from industry leading manufacturers. Mouser is an authorized distributor for many circuit protection manufacturers including Analog Devices, Bourns, Eaton, Phoenix Contact, TDK EPCOS, Littelfuse, Vishay, & more.
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Please view our selection of circuit protection devices below.

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Part #

Thermal Cut-offs TRIP TEMP 90C 5C TOL

HC90AY-1
Bourns
1: $1.90
3,108In Stock

Mfr. Part No.
HC90AY-1

Mouser Part No
652-HC90AY-1

Bourns

Thermal Cut-offs TRIP TEMP 90C 5C TOL

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Datasheet

3,108In Stock

$1.90

$1.80

$1.56

$1.44

View

Min.: 1
Mult.: 1

Thermal Cut-offs TRIP TEMP 77C 5C TOL

LC77AY-1
Bourns
1: $1.74
7,547In Stock

Mfr. Part No.
LC77AY-1

Mouser Part No
652-LC77AY-1

Bourns

Thermal Cut-offs TRIP TEMP 77C 5C TOL

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Datasheet

7,547In Stock

$1.74

$1.60

$1.33

$1.16

View

Min.: 1
Mult.: 1

Resettable Fuses - PPTC 2920 Resettable SMD PPTC 3.3A/6V

MF-LSMF330X-2
Bourns
1: $1.02
8,916In Stock

Mfr. Part No.
MF-LSMF330X-2

Mouser Part No
652-MF-LSMF330X-2

Bourns

Resettable Fuses - PPTC 2920 Resettable SMD PPTC 3.3A/6V

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Datasheet

8,916In Stock

Cut Tape

$1.02

$0.782

$0.733

$0.554

View

Reel

$0.409

MouseReel Available

Min.: 1
Mult.: 1

: 6,000

Resettable Fuses - PPTC PTC 2.5A 30V RADIAL LEADED UNCOATED

MF-R250U
Bourns
1: $0.68
7,525In Stock

Mfr. Part No.
MF-R250U

Mouser Part No
652-MF-R250U

Bourns

Resettable Fuses - PPTC PTC 2.5A 30V RADIAL LEADED UNCOATED

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Datasheet

7,525In Stock

$0.68

$0.611

$0.405

$0.363

View

Min.: 1
Mult.: 1

Varistors PV 140V 10%

PV140K4032R2
Bourns
1: $1.13
4,771In Stock

Mfr. Part No.
PV140K4032R2

Mouser Part No
652-PV140K4032R2

Bourns

Varistors PV 140V 10%

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Datasheet

4,771In Stock

Cut Tape

$1.13

$0.721

$0.632

$0.59

Reel

$0.543

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Varistors PV 275V 10%

PV275K4032R2
Bourns
1: $1.13
6,868In Stock

Mfr. Part No.
PV275K4032R2

Mouser Part No
652-PV275K4032R2

Bourns

Varistors PV 275V 10%

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Datasheet

6,868In Stock

Cut Tape

$1.13

$0.721

$0.632

$0.589

Reel

$0.543

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Thermal Cut-offs HC TCO 77C BL-51

SA77SB0
Bourns
1: $1.47
23,118In Stock

Mfr. Part No.
SA77SB0

Mouser Part No
652-SA77SB0

Bourns

Thermal Cut-offs HC TCO 77C BL-51

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Datasheet

23,118In Stock

Cut Tape

$1.47

$1.35

$1.12

$0.987

View

Reel

$0.632

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

Thermal Cut-offs 72C Reinforced Cover SMD HC TCO

SC72AAA
Bourns
1: $1.59
4,479In Stock

Mfr. Part No.
SC72AAA

Mouser Part No
652-SC72AAA

Bourns

Thermal Cut-offs 72C Reinforced Cover SMD HC TCO

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Datasheet

4,479In Stock

Cut Tape

$1.59

$1.43

$1.23

$1.11

View

Reel

$0.813

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

Surface Mount Fuses 4A Fast Acting 0603 SinglFuse

SF-0603F400-2
Bourns
1: $0.789
21,803In Stock

Mfr. Part No.
SF-0603F400-2

Mouser Part No
652-SF-0603F400-2

Bourns

Surface Mount Fuses 4A Fast Acting 0603 SinglFuse

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Datasheet

21,803In Stock

Cut Tape

$0.789

$0.672

$0.583

$0.528

View

Reel

$0.333

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

Surface Mount Fuses 1A 32V TIME DELAY

SF-0603SP100-2
Bourns
1: $1.03
15,766In Stock

Mfr. Part No.
SF-0603SP100-2

Mouser Part No
652-SF-0603SP100-2

Bourns

Surface Mount Fuses 1A 32V TIME DELAY

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Datasheet

15,766In Stock

Cut Tape

$1.03

$0.821

$0.692

$0.608

View

Reel

$0.384

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

Surface Mount Fuses 1.6A 32V TIME DELAY

SF-0603SP160-2
Bourns
1: $1.03
18,045In Stock

Mfr. Part No.
SF-0603SP160-2

Mouser Part No
652-SF-0603SP160-2

Bourns

Surface Mount Fuses 1.6A 32V TIME DELAY

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Datasheet

18,045In Stock

Cut Tape

$1.03

$0.821

$0.692

$0.608

View

Reel

$0.384

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

Surface Mount Fuses 6A 50V TIME DELAY

SF-0603SP600-2
Bourns
1: $1.03
13,408In Stock

Mfr. Part No.
SF-0603SP600-2

Mouser Part No
652-SF-0603SP600-2

Bourns

Surface Mount Fuses 6A 50V TIME DELAY

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Datasheet

13,408In Stock

Cut Tape

$1.03

$0.779

$0.683

$0.60

View

Reel

$0.384

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

Surface Mount Fuses 0603 time-lag met-foil. 5A Auto

SF-0603SPA500R-2
Bourns
1: $1.44
4,286In Stock

Mfr. Part No.
SF-0603SPA500R-2

Mouser Part No
652-SF-0603SPA500R-2

Bourns

Surface Mount Fuses 0603 time-lag met-foil. 5A Auto

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Datasheet

4,286In Stock

Cut Tape

$1.44

$1.15

$0.968

$0.84

View

Reel

$0.515

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

Surface Mount Fuses 1206 slow-blow met-foil. 15A Auto

SF-1206SA1500R-2
Bourns
1: $1.33
7,076In Stock

Mfr. Part No.
SF-1206SA1500R-2

Mouser Part No
652-SF-1206SA1500R-2

Bourns

Surface Mount Fuses 1206 slow-blow met-foil. 15A Auto

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Datasheet

7,076In Stock

Cut Tape

$1.33

$1.06

$0.892

$0.775

View

Reel

$0.475

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

Thyristor Surge Protection Devices - TSPD Very Low Voltage Bidirectional

TISP4030L1AJR-S
Bourns
1: $1.09
19,296In Stock

Mfr. Part No.
TISP4030L1AJR-S

Mouser Part No
652-TISP4030L1AJR-S

Bourns

Thyristor Surge Protection Devices - TSPD Very Low Voltage Bidirectional

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Datasheet

19,296In Stock

Cut Tape

$1.09

$0.592

$0.40

$0.307

Reel

$0.226

View

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

Thyristor Surge Protection Devices - TSPD Very Low Voltage Bidirectional

TISP4040L1BJR-S
Bourns
1: $0.911
23,147In Stock

Mfr. Part No.
TISP4040L1BJR-S

Mouser Part No
652-TISP4040L1BJR-S

Bourns

Thyristor Surge Protection Devices - TSPD Very Low Voltage Bidirectional

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Datasheet

23,147In Stock

Cut Tape

$0.911

$0.657

$0.411

$0.318

Reel

$0.248

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

PTC (Positive Temperature Coefficient) Thermistors PTC 3.3Kohms 1% Linear

TFPT0805L3301FM
Vishay / Dale
1: $1.73
4,810In Stock

Mfr. Part No.
TFPT0805L3301FM

Mouser Part No
71-TFPT0805L3301FM

Vishay / Dale

PTC (Positive Temperature Coefficient) Thermistors PTC 3.3Kohms 1% Linear

Learn More

Datasheet

4,810In Stock

Cut Tape

$1.73

$1.29

$1.03

$0.974

View

Reel

$0.676

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 12V 1000W UniDir TransZorb 5% Tol

SMBJ12A-M3/5B
Vishay Semiconductors
1: $0.87
13,541In Stock

Mfr. Part No.
SMBJ12A-M3/5B

Mouser Part No
78-SMBJ12A-M35B

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 12V 1000W UniDir TransZorb 5% Tol

Learn More

Datasheet

13,541In Stock

Cut Tape

$0.87

$0.422

$0.343

$0.28

Reel

$0.199

View

Min.: 1
Mult.: 1

: 3,200

ESD Protection Diodes / TVS Diodes 24V 600W Bidir TransZorb 3.5% Tol

SMBJ24CD-M3/H
Vishay Semiconductors
1: $1.06
9,507In Stock

Mfr. Part No.
SMBJ24CD-M3/H

Mouser Part No
78-SMBJ24CD-M3/H

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 24V 600W Bidir TransZorb 3.5% Tol

Learn More

Datasheet

9,507In Stock

Cut Tape

$1.06

$0.517

$0.422

$0.216

Reel

$0.203

MouseReel Available

Min.: 1
Mult.: 1

: 750

NTC (Negative Temperature Coefficient) Thermistors 10K OHM 10% DO-35

103JG1KE
Littelfuse
1: $0.394
12,642In Stock

Mfr. Part No.
103JG1KE

Mouser Part No
803-103JG1KE

Littelfuse

NTC (Negative Temperature Coefficient) Thermistors 10K OHM 10% DO-35

Learn More

Datasheet

12,642In Stock

Cut Tape

$0.394

$0.363

$0.32

$0.305

View

Reel

$0.193

Min.: 1
Mult.: 1

: 5,000

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

PRF18BB471QS5RB
Murata Electronics
1: $0.626
7,307In Stock

Mfr. Part No.
PRF18BB471QS5RB

Mouser Part No
81-PRF18BB471QS5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

7,307In Stock

Cut Tape

$0.626

$0.583

$0.544

$0.517

View

Reel

$0.336

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

Varistors 0402 39V 1.1 pF

AVRL101A1R1NTB
TDK
1: $1.16
18,763In Stock

Mfr. Part No.
AVRL101A1R1NTB

Mouser Part No
810-AVRL101A1R1NTB

TDK

Varistors 0402 39V 1.1 pF

Learn More

Datasheet

18,763In Stock

Cut Tape

$1.16

$0.738

$0.649

$0.605

View

Reel

$0.462

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, NTC 10K OHM, 3%, 0201

NTCG063JH103HTB
TDK
1: $0.775
6,182In Stock

Mfr. Part No.
NTCG063JH103HTB

Mouser Part No
810-NTCG063JH103HT1

TDK

NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, NTC 10K OHM, 3%, 0201

Learn More

Datasheet

6,182In Stock

Cut Tape

$0.775

$0.728

$0.68

$0.647

View

Reel

$0.431

MouseReel Available

Min.: 1
Mult.: 1

: 15,000

Triacs Triacs

2N6349AG
Littelfuse
1: $3.48
2,182In Stock

Mfr. Part No.
2N6349AG

Mouser Part No
863-2N6349AG

Littelfuse

Triacs Triacs

Datasheet

2,182In Stock

Cut Tape

$3.48

$2.38

$1.73

$1.54

Reel

$1.54

Min.: 1
Mult.: 1

: 1,000

SCRs 400V 25A

2N6507G
Littelfuse
1: $5.82
2,580In Stock

Mfr. Part No.
2N6507G

Mouser Part No
863-2N6507G

Littelfuse

SCRs 400V 25A

Datasheet

2,580In Stock

Cut Tape

$5.82

$3.86

$2.75

$2.71

Reel

$2.71

Min.: 1
Mult.: 1

: 1,000

Circuit Protection

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