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Circuit Protection

Circuit Protection devices and components are available at Mouser from industry leading manufacturers. Mouser is an authorized distributor for many circuit protection manufacturers including Bourns, Eaton, TDK, Littelfuse, Semtech, Vishay, & more.
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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CHF) Filter the results in the table by unit price based on your quantity.	Qty.
ESD Protection Diodes / TVS Diodes 4V, 0.55pF, 20A, SOD882 SC4340L-01ETG Littelfuse 1: CHF 0.644 20’046In Stock New Product	Mfr. Part No. SC4340L-01ETG Mouser Part No 576-SC4340L-01ETG New Product	Littelfuse	ESD Protection Diodes / TVS Diodes 4V, 0.55pF, 20A, SOD882 Learn More about Littelfuse sx4340l tvs diode arrays		20’046In Stock	Cut Tape CHF 0.644 CHF 0.408 CHF 0.261 CHF 0.194 Reel CHF 0.113 View CHF 0.157 CHF 0.135 CHF 0.134 CHF 0.107	Min.: 1 Mult.: 1 : 10’000
ESD Protection Diodes / TVS Diodes 400W,24V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF24CA-M3/I 4SMF24CA-M3/I Vishay Semiconductors 1: CHF 0.402 19’328In Stock 10’000Expected 11/23/2026 New Product	Mfr. Part No. 4SMF24CA-M3/I Mouser Part No 78-4SMF24CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,24V5%,SMFBIDIRTVS	Datasheet	19’328In Stock 10’000Expected 11/23/2026	Cut Tape CHF 0.402 CHF 0.283 CHF 0.139 CHF 0.116 Reel CHF 0.058 View CHF 0.08 CHF 0.07 CHF 0.066 CHF 0.052	Min.: 1 Mult.: 1 : 10’000
ESD Protection Diodes / TVS Diodes Automotive High Surge ESD - SOT-23,Uni,5V PE4305C2A-AU_R1_007A1 Panjit 1: CHF 0.354 5’396In Stock New Product	Mfr. Part No. PE4305C2A-AU_R1_007A1 Mouser Part No 241-PE4305C2AAUR17A1 New Product	Panjit	ESD Protection Diodes / TVS Diodes Automotive High Surge ESD - SOT-23,Uni,5V	Datasheet	5’396In Stock	Cut Tape CHF 0.354 CHF 0.243 CHF 0.119 CHF 0.10 Reel CHF 0.06 View CHF 0.069 CHF 0.056 CHF 0.05 MouseReel Available	Min.: 1 Mult.: 1 : 3’000
ESD Protection Diodes / TVS Diodes 400W,10V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF10CA-M3/I 4SMF10CA-M3/I Vishay Semiconductors 1: CHF 0.394 8’909In Stock New Product	Mfr. Part No. 4SMF10CA-M3/I Mouser Part No 78-4SMF10CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,10V5%,SMFBIDIRTVS	Datasheet	8’909In Stock	Cut Tape CHF 0.394 CHF 0.272 CHF 0.134 CHF 0.111 Reel CHF 0.056 View CHF 0.078 CHF 0.067 CHF 0.065 CHF 0.051	Min.: 1 Mult.: 1 : 10’000
ESD Protection Diodes / TVS Diodes 400W,20V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF20CA-M3/I 4SMF20CA-M3/I Vishay Semiconductors 1: CHF 0.394 7’871In Stock New Product	Mfr. Part No. 4SMF20CA-M3/I Mouser Part No 78-4SMF20CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,20V5%,SMFBIDIRTVS	Datasheet	7’871In Stock	Cut Tape CHF 0.394 CHF 0.272 CHF 0.134 CHF 0.111 Reel CHF 0.056 View CHF 0.078 CHF 0.067 CHF 0.065 CHF 0.051	Min.: 1 Mult.: 1 : 10’000
ESD Protection Diodes / TVS Diodes 400W,26V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF26CA-M3/I 4SMF26CA-M3/I Vishay Semiconductors 1: CHF 0.402 19’234In Stock New Product	Mfr. Part No. 4SMF26CA-M3/I Mouser Part No 78-4SMF26CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,26V5%,SMFBIDIRTVS	Datasheet	19’234In Stock	Cut Tape CHF 0.402 CHF 0.283 CHF 0.139 CHF 0.116 Reel CHF 0.058 View CHF 0.08 CHF 0.07 CHF 0.066 CHF 0.052	Min.: 1 Mult.: 1 : 10’000
ESD Protection Diodes / TVS Diodes 400W,16V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF16CA-M3/I 4SMF16CA-M3/I Vishay Semiconductors 1: CHF 0.394 7’916In Stock New Product	Mfr. Part No. 4SMF16CA-M3/I Mouser Part No 78-4SMF16CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,16V5%,SMFBIDIRTVS	Datasheet	7’916In Stock	Cut Tape CHF 0.394 CHF 0.272 CHF 0.134 CHF 0.111 Reel CHF 0.056 View CHF 0.078 CHF 0.067 CHF 0.065 CHF 0.051	Min.: 1 Mult.: 1 : 10’000
NTC (Negative Temperature Coefficient) Thermistors NTC LUG M5 10k 1% G24 64mm A Vishay / BC Components NTCALUG54A103F640A NTCALUG54A103F640A Vishay / BC Components 1: CHF 2.49 266In Stock New Product	Mfr. Part No. NTCALUG54A103F640A Mouser Part No 594-NTCALUG54A103F6 New Product	Vishay / BC Components	NTC (Negative Temperature Coefficient) Thermistors NTC LUG M5 10k 1% G24 64mm A	Datasheet	266In Stock	CHF 2.49 CHF 1.87 CHF 1.67 CHF 1.58 View CHF 1.54 CHF 1.53 CHF 1.32 CHF 1.29 CHF 1.24	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 350W,58V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF58CAHM3/I 4SMF58CAHM3/I Vishay Semiconductors 1: CHF 0.475 6’969In Stock New Product	Mfr. Part No. 4SMF58CAHM3/I Mouser Part No 78-4SMF58CAHM3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 350W,58V5%,SMFBIDIRTVS	Datasheet	6’969In Stock	Cut Tape CHF 0.475 CHF 0.295 CHF 0.188 CHF 0.141 Reel CHF 0.082 View CHF 0.113 CHF 0.098 CHF 0.096 CHF 0.078	Min.: 1 Mult.: 1 : 10’000
ESD Protection Diodes / TVS Diodes 400W,17V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF17CA-M3/I 4SMF17CA-M3/I Vishay Semiconductors 1: CHF 0.394 7’816In Stock New Product	Mfr. Part No. 4SMF17CA-M3/I Mouser Part No 78-4SMF17CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,17V5%,SMFBIDIRTVS	Datasheet	7’816In Stock	Cut Tape CHF 0.394 CHF 0.272 CHF 0.134 CHF 0.111 Reel CHF 0.056 View CHF 0.078 CHF 0.067 CHF 0.065 CHF 0.051	Min.: 1 Mult.: 1 : 10’000
ESD Protection Diodes / TVS Diodes 400W,18V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF18CA-M3/I 4SMF18CA-M3/I Vishay Semiconductors 1: CHF 0.394 7’632In Stock New Product	Mfr. Part No. 4SMF18CA-M3/I Mouser Part No 78-4SMF18CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,18V5%,SMFBIDIRTVS	Datasheet	7’632In Stock	Cut Tape CHF 0.394 CHF 0.272 CHF 0.134 CHF 0.111 Reel CHF 0.056 View CHF 0.078 CHF 0.067 CHF 0.065 CHF 0.051	Min.: 1 Mult.: 1 : 10’000
Industrial Surge Protectors SPD 120V Single Phase 36kA SDSA05 Square D 1: CHF 88.55 7In Stock New Product	Mfr. Part No. SDSA05 Mouser Part No 996-SDSA05 New Product	Square D	Industrial Surge Protectors SPD 120V Single Phase 36kA Learn More about Square D sdsa surge protective devices	Datasheet	7In Stock	CHF 88.55	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes TVS 6KA RATED 450V BI AXIAL AK8-450C-FB Littelfuse 1: CHF 109.28 4In Stock 56Expected 2/8/2027 New Product	Mfr. Part No. AK8-450C-FB Mouser Part No 576-AK8-450C-FB New Product	Littelfuse	ESD Protection Diodes / TVS Diodes TVS 6KA RATED 450V BI AXIAL Learn More about Littelfuse ak8 fb tvs diodes	Datasheet	4In Stock 56Expected 2/8/2027	CHF 109.28 CHF 97.75	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes TVS 5KW 18V 5%UNI DO-214AB TR13 RoHS Littelfuse 5.0SMDJ18A-E 5.0SMDJ18A-E Littelfuse 1: CHF 2.26 3’000In Stock New Product	Mfr. Part No. 5.0SMDJ18A-E Mouser Part No 576-5.0SMDJ18AE New Product	Littelfuse	ESD Protection Diodes / TVS Diodes TVS 5KW 18V 5%UNI DO-214AB TR13 RoHS	Datasheet	3’000In Stock	Cut Tape CHF 2.26 CHF 1.45 CHF 1.18 CHF 0.992 CHF 0.805 Reel CHF 0.684	Min.: 1 Mult.: 1 : 3’000
Circuit Breakers 8340-F410-P1M1-ALH0-5A E-T-A 1: CHF 68.43 8In Stock 20Expected 1/1/2027 New At Mouser	Mfr. Part No. 8340-F410-P1M1-ALH0-5A Mouser Part No 457-4F410P1M1ALH05A New At Mouser	E-T-A	Circuit Breakers		8In Stock 20Expected 1/1/2027	CHF 68.43 CHF 56.77 CHF 53.38 CHF 44.48 View CHF 41.53 CHF 41.52 Quote	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 30V, 100A ,DNF2020-6L SC3000-01UTG Littelfuse 1: CHF 1.49 3’000In Stock New Product	Mfr. Part No. SC3000-01UTG Mouser Part No 576-SC3000-01UTG New Product	Littelfuse	ESD Protection Diodes / TVS Diodes 30V, 100A ,DNF2020-6L Learn More about Littelfuse tvs spa diode arrays	Datasheet	3’000In Stock	Cut Tape CHF 1.49 CHF 0.934 CHF 0.612 CHF 0.473 Reel CHF 0.381 View CHF 0.401 CHF 0.35 MouseReel Available	Min.: 1 Mult.: 1 : 3’000
ESD Protection Diodes / TVS Diodes 1.0 V, 0.17 pF, 15 kV, Bidirectional TVS SP4315-01WTG Littelfuse 1: CHF 0.66 7’000In Stock 100Expected 12/21/2026 New Product	Mfr. Part No. SP4315-01WTG Mouser Part No 576-SP4315-01WTG New Product	Littelfuse	ESD Protection Diodes / TVS Diodes 1.0 V, 0.17 pF, 15 kV, Bidirectional TVS Learn More about Littelfuse sp4315 01wtg tvs diode arrays	Datasheet	7’000In Stock 100Expected 12/21/2026	Cut Tape CHF 0.66 CHF 0.411 CHF 0.269 CHF 0.203 View Reel CHF 0.154 CHF 0.184 CHF 0.169 CHF 0.165 CHF 0.154 MouseReel Available	Min.: 1 Mult.: 1 : 10’000
ESD Protection Diodes / TVS Diodes 10V, Uni-directional, 20A-80A SVS1071P3UU.N Semtech 1: CHF 0.555 8’000In Stock New Product	Mfr. Part No. SVS1071P3UU.N Mouser Part No 947-SVS1071P3UU.N New Product	Semtech	ESD Protection Diodes / TVS Diodes 10V, Uni-directional, 20A-80A		8’000In Stock	Cut Tape CHF 0.555 CHF 0.346 CHF 0.222 CHF 0.165 Reel CHF 0.095 View CHF 0.134 CHF 0.115 CHF 0.113 CHF 0.091 MouseReel Available	Min.: 1 Mult.: 1 : 10’000
ESD Protection Diodes / TVS Diodes UCLAMP3311T 3.3V SLP-10K UCLAMP3311T.TNT Semtech 1: CHF 0.733 4’529In Stock New Product	Mfr. Part No. UCLAMP3311T.TNT Mouser Part No 947-UCLAMP3311T.TNT New Product	Semtech	ESD Protection Diodes / TVS Diodes UCLAMP3311T 3.3V SLP-10K	Datasheet	4’529In Stock	Cut Tape CHF 0.733 CHF 0.455 CHF 0.297 CHF 0.224 View Reel CHF 0.143 CHF 0.204 CHF 0.187 CHF 0.182 CHF 0.143 MouseReel Available	Min.: 1 Mult.: 1 : 10’000
ESD Protection Diodes / TVS Diodes 48 V, 1.6 pF, 30 kV, Bidirectional TVS AQ48ETH-02HTG Littelfuse 1: CHF 1.34 2’100In Stock 100Expected 12/21/2026 New Product	Mfr. Part No. AQ48ETH-02HTG Mouser Part No 576-AQ48ETH-02HTG New Product	Littelfuse	ESD Protection Diodes / TVS Diodes 48 V, 1.6 pF, 30 kV, Bidirectional TVS Learn More about Littelfuse low capacitance esd spa diodes	Datasheet	2’100In Stock 100Expected 12/21/2026	Cut Tape CHF 1.34 CHF 0.837 CHF 0.548 CHF 0.423 Reel CHF 0.342 View CHF 0.359 CHF 0.311 CHF 0.30 MouseReel Available	Min.: 1 Mult.: 1 : 3’000
Varistors 7mm Radial Disc-Straight Leads,Bulk MOV-07D201KC Bourns 1: CHF 0.273 4’000In Stock New Product	Mfr. Part No. MOV-07D201KC Mouser Part No 652-MOV-07D201KC New Product	Bourns	Varistors 7mm Radial Disc-Straight Leads,Bulk Learn More about Bourns mov kc metal oxide varistors	Datasheet	4’000In Stock	CHF 0.273 CHF 0.222 CHF 0.118 CHF 0.078 View CHF 0.057 CHF 0.049 CHF 0.041 CHF 0.037	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 15V, Uni-directional, 20A-80A SVS1571P3UU.N Semtech 1: CHF 0.555 8’000In Stock New Product	Mfr. Part No. SVS1571P3UU.N Mouser Part No 947-SVS1571P3UU.N New Product	Semtech	ESD Protection Diodes / TVS Diodes 15V, Uni-directional, 20A-80A		8’000In Stock	Cut Tape CHF 0.555 CHF 0.346 CHF 0.222 CHF 0.165 Reel CHF 0.095 View CHF 0.134 CHF 0.115 CHF 0.113 CHF 0.091 MouseReel Available	Min.: 1 Mult.: 1 : 10’000
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 315A ESR3XLUB0315XI Littelfuse 1: CHF 470.47 2In Stock 1Expected 11/30/2026 New Product	Mfr. Part No. ESR3XLUB0315XI Mouser Part No 576-ESR3XLUB0315XI New Product	Littelfuse	Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 315A Learn More about Littelfuse esr high speed square body fuses	Datasheet	2In Stock 1Expected 11/30/2026	CHF 470.47 CHF 386.31 CHF 351.54	Min.: 1 Mult.: 1
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 250A ESR3XLUB0250XI Littelfuse 1: CHF 420.53 3In Stock New Product	Mfr. Part No. ESR3XLUB0250XI Mouser Part No 576-ESR3XLUB0250XI New Product	Littelfuse	Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 250A Learn More about Littelfuse esr high speed square body fuses	Datasheet	3In Stock	CHF 420.53 CHF 345.30 CHF 314.22	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 7V & 12V 75pF 20A SOT23-3L SC712-02HTG Littelfuse 1: CHF 1.12 2’176In Stock 100Expected 11/17/2026 New Product	Mfr. Part No. SC712-02HTG Mouser Part No 576-SC712-02HTG New Product	Littelfuse	ESD Protection Diodes / TVS Diodes 7V & 12V 75pF 20A SOT23-3L Learn More about Littelfuse tvs spa diode arrays	Datasheet	2’176In Stock 100Expected 11/17/2026	Cut Tape CHF 1.12 CHF 0.709 CHF 0.463 CHF 0.358 Reel CHF 0.289 View CHF 0.304 CHF 0.262 CHF 0.254 MouseReel Available	Min.: 1 Mult.: 1 : 3’000

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Circuit Protection

Types of Circuit Protection