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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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Types of Circuit Protection

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Results: 359,447

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Part #

Varistors IsoMOV 5KA 510Vrms Bulk In-Line

IsoM5-510-B-L2
Bourns
1: $2.81
2,950In Stock

Mfr. Part #
IsoM5-510-B-L2

Mouser Part #
652-ISOM5-510-B-L2

Bourns

Varistors IsoMOV 5KA 510Vrms Bulk In-Line

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Datasheet

2,950In Stock

$2.81

$1.95

$1.63

$1.59

View

Min.: 1
Mult.: 1

Resettable Fuses - PPTC 2920 Resettable SMD PPTC 1.85/15V

MF-LSMF185X-2
Bourns
1: $0.923
8,888In Stock

Mfr. Part #
MF-LSMF185X-2

Mouser Part #
652-MF-LSMF185X-2

Bourns

Resettable Fuses - PPTC 2920 Resettable SMD PPTC 1.85/15V

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Datasheet

8,888In Stock

Cut Tape

$0.923

$0.709

$0.664

$0.502

View

Reel

$0.377

MouseReel Available

Min.: 1
Mult.: 1

: 6,000

Resettable Fuses - PPTC 30V 2.5A-HD 40A MAX

MF-R250-0-10
Bourns
1: $0.65
13,060In Stock

Mfr. Part #
MF-R250-0-10

Mouser Part #
652-MF-R250-0-10

Bourns

Resettable Fuses - PPTC 30V 2.5A-HD 40A MAX

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Datasheet

13,060In Stock

$0.65

$0.562

$0.504

$0.432

View

Min.: 1
Mult.: 1

Resettable Fuses - PPTC 240V .16A-HD 2A MAX

MF-RM016/240-2
Bourns
1: $0.754
12,192In Stock

Mfr. Part #
MF-RM016/240-2

Mouser Part #
652-MF-RM016/240-2

Bourns

Resettable Fuses - PPTC 240V .16A-HD 2A MAX

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Datasheet

12,192In Stock

Cut Tape

$0.754

$0.638

$0.581

$0.498

View

Reel

$0.371

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors PTC 6.8Kohms 1% Linear

TFPT1206L6801FM
Vishay / Dale
1: $1.69
4,627In Stock

Mfr. Part #
TFPT1206L6801FM

Mouser Part #
71-TFPT1206L6801FM

Vishay / Dale

PTC Thermistors PTC 6.8Kohms 1% Linear

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Datasheet

4,627In Stock

Cut Tape

$1.69

$1.26

$1.01

$0.952

View

Reel

$0.655

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes TVS ARRAY4 ELMNTS

RSA6.1J4T2R
ROHM Semiconductor
1: $0.845
12,644In Stock

Mfr. Part #
RSA6.1J4T2R

Mouser Part #
755-RSA6.1J4T2R

ROHM Semiconductor

ESD Protection Diodes / TVS Diodes TVS ARRAY4 ELMNTS

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Datasheet

12,644In Stock

Cut Tape

$0.845

$0.398

$0.328

$0.265

View

Reel

$0.146

MouseReel Available

Min.: 1
Mult.: 1

: 8,000

ESD Protection Diodes / TVS Diodes RASMID™ Series - Transient Voltage Suppressor

VS4V5BU1QST18R
ROHM Semiconductor
1: $0.494
35,482In Stock

Mfr. Part #
VS4V5BU1QST18R

Mouser Part #
755-VS4V5BU1QST18R

ROHM Semiconductor

ESD Protection Diodes / TVS Diodes RASMID™ Series - Transient Voltage Suppressor

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Datasheet

35,482In Stock

Cut Tape

$0.494

$0.235

$0.165

$0.135

View

Reel

$0.078

MouseReel Available

Min.: 1
Mult.: 1

: 18,000

ESD Protection Diodes / TVS Diodes 150W,14V UNIDIR,Micro-SMP TVS

MSMP14A-M3/89A
Vishay Semiconductors
1: $0.455
33,810In Stock

Mfr. Part #
MSMP14A-M3/89A

Mouser Part #
78-MSMP14A-M389A

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 150W,14V UNIDIR,Micro-SMP TVS

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Datasheet

33,810In Stock

Cut Tape

$0.455

$0.20

$0.174

$0.13

Reel

$0.072

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,500

ESD Protection Diodes / TVS Diodes 5000W Pppm Uni TVS SMC (DO-214AB)

SMC5K30A-M3/H
Vishay Semiconductors
1: $2.76
3,134In Stock

Mfr. Part #
SMC5K30A-M3/H

Mouser Part #
78-SMC5K30A-M3/H

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 5000W Pppm Uni TVS SMC (DO-214AB)

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Datasheet

3,134In Stock

Cut Tape

$2.76

$1.40

$1.21

$0.931

Reel

$0.855

View

MouseReel Available

Min.: 1
Mult.: 1

: 850

ESD Protection Diodes / TVS Diodes 5000W Pppm Uni TVS SMC (DO-214AB)

SMC5K36A-M3/I
Vishay Semiconductors
1: $2.76
4,808In Stock

Mfr. Part #
SMC5K36A-M3/I

Mouser Part #
78-SMC5K36A-M3/I

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 5000W Pppm Uni TVS SMC (DO-214AB)

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Datasheet

4,808In Stock

Cut Tape

$2.76

$1.40

$1.21

$0.993

Reel

$0.789

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,500

ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SMF DO219-M3

SMF33A-M3-08
Vishay Semiconductors
1: $0.754
28,890In Stock

Mfr. Part #
SMF33A-M3-08

Mouser Part #
78-SMF33A-M3-08

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SMF DO219-M3

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Datasheet

28,890In Stock

Cut Tape

$0.754

$0.462

$0.294

$0.239

Reel

$0.168

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 1000watt 40volt

SMF40A-E3-08
Vishay Semiconductors
1: $0.494
31,690In Stock

Mfr. Part #
SMF40A-E3-08

Mouser Part #
78-SMF40A-E3-08

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 1000watt 40volt

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Datasheet

31,690In Stock

Cut Tape

$0.494

$0.244

$0.208

$0.172

Reel

$0.121

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 400W -/+30kV -/+5% AEC-Q101 Qualified

VTVS47ASMF-HM3-08
Vishay Semiconductors
1: $1.01
28,902In Stock

Mfr. Part #
VTVS47ASMF-HM3-08

Mouser Part #
78-VTVS47ASMF-HM3-08

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 400W -/+30kV -/+5% AEC-Q101 Qualified

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Datasheet

28,902In Stock

Cut Tape

$1.01

$0.532

$0.426

$0.341

Reel

$0.261

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

NTC Thermistors 10KOhm 20% Thermisto w/adjacent leads

112-103FAJ-B01
Honeywell
1: $43.42
152In Stock

Mfr. Part #
112-103FAJ-B01

Mouser Part #
785-112-103FAJ-B01

Honeywell

NTC Thermistors 10KOhm 20% Thermisto w/adjacent leads

Datasheet

152In Stock

$43.42

$40.56

$39.14

$37.22

View

Min.: 1
Mult.: 1

SCRs 35A 1200V Single SCR

VS-40TPS12-M3
Vishay Semiconductors
1: $11.75
759In Stock

Mfr. Part #
VS-40TPS12-M3

Mouser Part #
844-40TPS12-M3

Vishay Semiconductors

SCRs 35A 1200V Single SCR

Datasheet

759In Stock

$11.75

$7.05

$5.59

Min.: 1
Mult.: 1

Triacs 8A 35mA 800V IGT 3 QUAD INTERNL ISLTD

BTA08-800CW3G
Littelfuse
1: $5.32
1,062In Stock

Mfr. Part #
BTA08-800CW3G

Mouser Part #
863-BTA08-800CW3G

Littelfuse

Triacs 8A 35mA 800V IGT 3 QUAD INTERNL ISLTD

Datasheet

1,062In Stock

$5.32

$2.72

$2.47

$2.24

View

Min.: 1
Mult.: 1

SCRs 600V 25A

MCR25MG
Littelfuse
1: $5.20
803In Stock

Mfr. Part #
MCR25MG

Mouser Part #
863-MCR25MG

Littelfuse

SCRs 600V 25A

Datasheet

803In Stock

Cut Tape

$5.20

$3.43

$2.37

Reel

$2.37

Min.: 1
Mult.: 1

: 1,000

Triacs THY SPECIAL TRIAC

T2800DG
Littelfuse
1: $3.67
3,355In Stock

Mfr. Part #
T2800DG

Mouser Part #
863-T2800DG

Littelfuse

Triacs THY SPECIAL TRIAC

Datasheet

3,355In Stock

Cut Tape

$3.67

$2.28

$1.65

$1.47

Reel

$1.47

Min.: 1
Mult.: 1

: 1,000

NTC Thermistors NTC Thermistor 0402 47K F60 B-4108 NICA

B57250V2473F560
TDK
1: $0.156
34,657In Stock

Mfr. Part #
B57250V2473F560

Mouser Part #
871-B57250V2473F560

TDK

NTC Thermistors NTC Thermistor 0402 47K F60 B-4108 NICA

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Datasheet

34,657In Stock

Cut Tape

$0.156

$0.135

$0.126

$0.105

View

Reel

$0.055

Min.: 1
Mult.: 1

: 10,000

Inrush Current Limiters S 364/1 M51

B57364S0109M051
TDK
1: $4.06
2,204In Stock

Mfr. Part #
B57364S0109M051

Mouser Part #
871-B57364S0109M051

TDK

Inrush Current Limiters S 364/1 M51

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Datasheet

2,204In Stock

Cut Tape

$4.06

$3.37

$3.11

$2.57

View

Reel

$1.82

Min.: 1
Mult.: 1

: 2,000

NTC Thermistors 10kohm 3950 3% 200mW Probe M702/10K/J

B57702M0103J000
TDK
1: $7.38
1,267In Stock

Mfr. Part #
B57702M0103J000

Mouser Part #
871-B57702M0103J000

TDK

NTC Thermistors 10kohm 3950 3% 200mW Probe M702/10K/J

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Datasheet

1,267In Stock

$7.38

$6.33

$5.54

$4.93

View

Min.: 1
Mult.: 1

NTC Thermistors 5k 3988

B57863S0502F040
TDK
1: $3.50
4,753In Stock

Mfr. Part #
B57863S0502F040

Mouser Part #
871-B57863S502F40

TDK

NTC Thermistors 5k 3988

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Datasheet

4,753In Stock

$3.50

$3.34

$3.16

$3.03

View

Min.: 1
Mult.: 1

PTC Thermistors 160C 12Vdc 3ohms Disc PTC Heating

B59060A0160A010
TDK
1: $3.00
1,660In Stock

Mfr. Part #
B59060A0160A010

Mouser Part #
871-B59060A0160A010

TDK

PTC Thermistors 160C 12Vdc 3ohms Disc PTC Heating

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Datasheet

1,660In Stock

$3.00

$2.46

$1.99

$1.86

View

Min.: 1
Mult.: 1

PTC Thermistors 180C 12Vdc 3ohms Disc PTC Heating

B59060A0180A010
TDK
1: $1.94
1,945In Stock

Mfr. Part #
B59060A0180A010

Mouser Part #
871-B59060A0180A010

TDK

PTC Thermistors 180C 12Vdc 3ohms Disc PTC Heating

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Datasheet

1,945In Stock

$1.94

$1.85

$1.74

$1.66

View

Min.: 1
Mult.: 1

Varistors 625VAC 10% 10mm StandarD

B72210S0621K101
TDK
1: $0.858
8,400In Stock

Mfr. Part #
B72210S0621K101

Mouser Part #
871-B72210S0621K101

TDK

Varistors 625VAC 10% 10mm StandarD

Learn More

Datasheet

8,400In Stock

$0.858

$0.55

$0.481

$0.447

View

Min.: 1
Mult.: 1

Circuit Protection

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