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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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Types of Circuit Protection

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.
ESD Protection Diodes / TVS Diodes TVS 10KA RATED 550V BI AXIAL AK10-550C-FL Littelfuse 1: £128.23 46In Stock 11Expected 09/12/2026 New Product	Mfr. Part No. AK10-550C-FL Mouser Part No 576-AK10-550C-FL New Product	Littelfuse	ESD Protection Diodes / TVS Diodes TVS 10KA RATED 550V BI AXIAL Learn More about Littelfuse ak fl tvs diodes	Datasheet	46In Stock 11Expected 09/12/2026	£128.23 £113.77	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 400W,24V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF24CA-M3/I 4SMF24CA-M3/I Vishay Semiconductors 1: £0.375 7,463In Stock 20,000On Order 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	7,463In Stock 20,000On Order On Order Ship Dates Mfr. No: 4SMF24CA-M3/I Stock: 7,463 Can Dispatch Immediately On Order: 10,000 Expected 09/11/2026 10,000 Expected 25/11/2026 Factory Lead Time: 10 Weeks	Cut Tape £0.375 £0.264 £0.129 £0.108 Reel £0.054 View £0.075 £0.065 £0.062 £0.049	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes TVS 6KA RATED 450V BI AXIAL AK8-450C-FB Littelfuse 1: £101.92 4In Stock 56Expected 08/02/2027 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 08/02/2027	£101.92 £91.17	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 400W,16V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF16CA-M3/I 4SMF16CA-M3/I Vishay Semiconductors 1: £0.368 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 £0.368 £0.254 £0.125 £0.104 Reel £0.052 View £0.072 £0.063 £0.06 £0.047	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: £2.32 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	£2.32 £1.75 £1.55 £1.48 View £1.43 £1.42 £1.23 £1.20 £1.16	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 350W,58V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF58CAHM3/I 4SMF58CAHM3/I Vishay Semiconductors 1: £0.443 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 £0.443 £0.275 £0.175 £0.132 Reel £0.077 View £0.106 £0.092 £0.09 £0.072	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: £0.368 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 £0.368 £0.254 £0.125 £0.104 Reel £0.052 View £0.072 £0.063 £0.06 £0.047	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: £0.375 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 £0.375 £0.264 £0.129 £0.108 Reel £0.054 View £0.075 £0.065 £0.062 £0.049	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: £0.33 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 £0.33 £0.227 £0.111 £0.093 Reel £0.056 View £0.065 £0.052 £0.046 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: £0.368 7,927In 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	7,927In Stock	Cut Tape £0.368 £0.254 £0.125 £0.104 Reel £0.052 View £0.072 £0.063 £0.06 £0.047	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: £0.368 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 £0.368 £0.254 £0.125 £0.104 Reel £0.052 View £0.072 £0.063 £0.06 £0.047	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: £0.368 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 £0.368 £0.254 £0.125 £0.104 Reel £0.052 View £0.072 £0.063 £0.06 £0.047	Min.: 1 Mult.: 1 : 10,000
Industrial Surge Protectors SPD 120V Single Phase 36kA SDSA05 Square D 1: £82.59 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	£82.59	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: £2.10 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 £2.10 £1.35 £1.10 £0.925 £0.751 Reel £0.638	Min.: 1 Mult.: 1 : 3,000
Circuit Breakers 8340-F410-P1M1-ALH0-5A E-T-A 1: £63.83 8In Stock 20Expected 01/01/2027 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 01/01/2027	£63.83 £52.95 £49.79 £41.48 View £38.74 £38.73 Quote	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 30V, 100A ,DNF2020-6L SC3000-01UTG Littelfuse 1: £1.39 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 £1.39 £0.871 £0.571 £0.441 Reel £0.355 View £0.374 £0.327 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: £0.615 7,000In Stock 100Expected 21/12/2026 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 21/12/2026	Cut Tape £0.615 £0.383 £0.251 £0.189 View Reel £0.143 £0.172 £0.158 £0.154 £0.143 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes 10V, Uni-directional, 20A-80A SVS1071P3UU.N Semtech 1: £0.518 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 £0.518 £0.323 £0.207 £0.154 Reel £0.089 View £0.125 £0.107 £0.106 £0.085 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes UCLAMP3311T 3.3V SLP-10K UCLAMP3311T.TNT Semtech 1: £0.684 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 £0.684 £0.424 £0.277 £0.209 View Reel £0.134 £0.19 £0.175 £0.169 £0.134 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Varistors MOV 510V 10mm 2.5KA 10% Silcn Coatng Strt Leads AEC-Q200 511KH10-AT YAGEO 1: £0.428 2,560In Stock 400Expected 11/01/2027 New Product	Mfr. Part No. 511KH10-AT Mouser Part No 603-511KH10-AT New Product	YAGEO	Varistors MOV 510V 10mm 2.5KA 10% Silcn Coatng Strt Leads AEC-Q200 Learn More about YAGEO kh at metal oxide varistors	Datasheet	2,560In Stock 400Expected 11/01/2027	£0.428 £0.265 £0.206 £0.196 View £0.191 £0.184 £0.149 £0.148	Min.: 1 Mult.: 1
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 250A ESR3XLUB0250XI Littelfuse 1: £392.22 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	£392.22 £322.06 £293.07	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 7V & 12V 75pF 20A SOT23-3L SC712-02HTG Littelfuse 1: £1.05 2,216In Stock 100Expected 17/11/2026 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	2,216In Stock 100Expected 17/11/2026	Cut Tape £1.05 £0.661 £0.432 £0.334 Reel £0.27 View £0.284 £0.244 £0.237 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes AUTO TVS TO-263 LOAD DUMP 33A SLD263-33A Littelfuse 1: £3.83 350In Stock New Product	Mfr. Part No. SLD263-33A Mouser Part No 576-SLD263-33A New Product	Littelfuse	ESD Protection Diodes / TVS Diodes AUTO TVS TO-263 LOAD DUMP 33A Learn More about Littelfuse sld263 tvs diodes	Datasheet	350In Stock	Cut Tape £3.83 £2.52 £2.06 £1.75 Reel £1.46 MouseReel Available	Min.: 1 Mult.: 1 : 500
ESD Protection Diodes / TVS Diodes TVS 3KW 350V 5%BI DO-214AB TR13 RoHS TPSMD350CA-A Littelfuse 1: £2.23 1,618In Stock 3,000Expected 12/01/2027 New Product	Mfr. Part No. TPSMD350CA-A Mouser Part No 576-TPSMD350CA-A New Product	Littelfuse	ESD Protection Diodes / TVS Diodes TVS 3KW 350V 5%BI DO-214AB TR13 RoHS Learn More about Littelfuse TPSMD TVS diodes	Datasheet	1,618In Stock 3,000Expected 12/01/2027	Cut Tape £2.23 £1.44 £1.17 £0.995 £0.78 Reel £0.663 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 8A 25pF max SLP0603P2x3L UCLAMP2001ZA.F Semtech 1: £0.45 20,800In Stock New Product	Mfr. Part No. UCLAMP2001ZA.F Mouser Part No 947-UCLAMP2001ZA New Product	Semtech	ESD Protection Diodes / TVS Diodes 8A 25pF max SLP0603P2x3L	Datasheet	20,800In Stock	Cut Tape £0.45 £0.315 £0.155 £0.129 View Reel £0.058 £0.089 £0.078 £0.074 £0.066 £0.058 MouseReel Available	Min.: 1 Mult.: 1 : 15,000

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Circuit Protection

Types of Circuit Protection