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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 (GBP) Filter the results in the table by unit price based on your quantity.	Qty.
ESD Protection Diodes / TVS Diodes Automotive High Surge ESD - DFN1006-2L,Bi,5V PEC3205M1Q-AU_R1_005A1 Panjit 1: £0.098 17,949In Stock New Product	Mfr. Part No. PEC3205M1Q-AU_R1_005A1 Mouser Part No 241-PEC3205M1QAUR15A New Product	Panjit	ESD Protection Diodes / TVS Diodes Automotive High Surge ESD - DFN1006-2L,Bi,5V	Datasheet	17,949In Stock	Cut Tape £0.098 £0.084 £0.045 £0.029 Reel £0.012 View £0.019 £0.017 £0.015 £0.01 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes 400W,16V5%,SMFBIDIRTVS 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 £0.047 View £0.072 £0.063 £0.057 £0.044	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes 400W,10V5%,SMFBIDIRTVS 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 £0.047 View £0.072 £0.063 £0.057 £0.044	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes TVS 6KA RATED 450V BI AXIAL AK8-450C-FB Littelfuse 1: £100.88 4In Stock 56Expected 15/12/2026 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 15/12/2026	£100.88 £92.10	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC LUG M5 10k 1% G24 64mm A NTCALUG54A103F640A Vishay / BC Components 1: £2.32 333In 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	333In Stock	£2.32 £1.75 £1.55 £1.48 View £1.43 £1.42 £1.24 £1.20 £1.16	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 350W,58V5%,SMFBIDIRTVS 4SMF58CAHM3/I Vishay Semiconductors 1: £0.361 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 £0.361 £0.247 £0.14 £0.11 Reel £0.067 View £0.093 £0.079 £0.075 £0.061	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes TVS AXIAL KA RATED - 3KA 430V BI AK3-430C-A Littelfuse 1: £71.20 4In Stock 56Expected 15/12/2026 New Product	Mfr. Part No. AK3-430C-A Mouser Part No 576-AK3-430C-A New Product	Littelfuse	ESD Protection Diodes / TVS Diodes TVS AXIAL KA RATED - 3KA 430V BI Learn More about Littelfuse ak3 a tvs diodes	Datasheet	4In Stock 56Expected 15/12/2026	£71.20 £65.01	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 400W,17V5%,SMFBIDIRTVS 4SMF17CA-M3/I Vishay Semiconductors 1: £0.368 7,840In 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	7,840In Stock	Cut Tape £0.368 £0.254 £0.125 £0.104 Reel £0.047 View £0.072 £0.063 £0.057 £0.044	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes 400W,18V5%,SMFBIDIRTVS 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 £0.047 View £0.072 £0.063 £0.057 £0.044	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 400W,20V5%,SMFBIDIRTVS 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 £0.047 View £0.072 £0.063 £0.057 £0.044	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes 400W,26V5%,SMFBIDIRTVS 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 £0.05 View £0.075 £0.065 £0.058 £0.045	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes 400W,24V5%,SMFBIDIRTVS 4SMF24CA-M3/I Vishay Semiconductors 1: £0.375 7,483In Stock 20,000Expected 25/11/2026 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	7,483In Stock 20,000Expected 25/11/2026	Cut Tape £0.375 £0.264 £0.129 £0.108 Reel £0.05 View £0.075 £0.065 £0.058 £0.045	Min.: 1 Mult.: 1 : 10,000
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: £0.978 1,975In 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	1,975In Stock 100Expected 17/11/2026	Cut Tape £0.978 £0.614 £0.402 £0.313 Reel £0.243 View £0.284 £0.228 £0.217 £0.215 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Surface Mount Fuses SF2T 0603 32V 2.5A Sn Tape&Reel SF2T060332V2A50TT Vishay / Sfernice 1: £0.743 3,500In Stock New Product	Mfr. Part No. SF2T060332V2A50TT Mouser Part No 594-SF2T060332V2A50T New Product	Vishay / Sfernice	Surface Mount Fuses SF2T 0603 32V 2.5A Sn Tape&Reel Learn More about Vishay / Sfernice vishay sft sf2t time lag acting thin film fuses	Datasheet	3,500In Stock	Cut Tape £0.743 £0.596 £0.502 £0.436 View Reel £0.269 £0.391 £0.361 £0.333 £0.308 £0.269 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 10kO 2% B25/50 3380K BTN06G103G3HF1T0A Bourns 1: £0.098 7,870In Stock New Product	Mfr. Part No. BTN06G103G3HF1T0A Mouser Part No 652-BTN061033HF1T0A New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 10kO 2% B25/50 3380K Learn More about Bourns btn06g ntc thermistors	Datasheet	7,870In Stock	Cut Tape £0.098 £0.088 £0.078 £0.064 Reel £0.048 View £0.057 £0.053 £0.045 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 47kO 3% B25/50 4050K BTN06G473H4AF1T00 Bourns 1: £0.098 8,000In Stock New Product	Mfr. Part No. BTN06G473H4AF1T00 Mouser Part No 652-BTN06473H4AF1T00 New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 47kO 3% B25/50 4050K Learn More about Bourns btn06g ntc thermistors	Datasheet	8,000In Stock	Cut Tape £0.098 £0.088 £0.078 £0.064 Reel £0.048 View £0.057 £0.053 £0.045 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes 8A 25pF max SLP0603P2x3L UCLAMP2001ZA.F Semtech 1: £0.308 21,000In 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	21,000In Stock	Cut Tape £0.308 £0.202 £0.12 £0.09 View Reel £0.051 £0.079 £0.067 £0.062 £0.057 £0.051 MouseReel Available	Min.: 1 Mult.: 1 : 15,000
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 10kO 3% B25/50 3380K BTN06G103H3HF1T0A Bourns 1: £0.098 8,000In Stock New Product	Mfr. Part No. BTN06G103H3HF1T0A Mouser Part No 652-BTN06103H3HF1T0A New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 10kO 3% B25/50 3380K Learn More about Bourns btn06g ntc thermistors	Datasheet	8,000In Stock	Cut Tape £0.098 £0.086 £0.076 £0.062 Reel £0.046 View £0.055 £0.052 £0.045 £0.043 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 47kO 2% B25/50 4050K BTN06G473G4AF1T00 Bourns 1: £0.098 7,997In Stock New Product	Mfr. Part No. BTN06G473G4AF1T00 Mouser Part No 652-BTN064734AF1T00 New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 47kO 2% B25/50 4050K Learn More about Bourns btn06g ntc thermistors	Datasheet	7,997In Stock	Cut Tape £0.098 £0.088 £0.078 £0.064 Reel £0.048 View £0.057 £0.053 £0.045 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes 15V, Uni-directional, 20A-80A SVS1571P3UU.N Semtech 1: £0.405 7,000In 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		7,000In Stock	Cut Tape £0.405 £0.25 £0.158 £0.127 Reel £0.078 View £0.107 £0.09 £0.083 £0.072 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
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 £1.34 £1.09 £0.917 Reel £0.635 View £0.72 £0.659 £0.576 £0.562	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 18 V, 0.6 pF, 10 kV AQ3118-02JTG Littelfuse 1: £0.934 1,948In Stock New Product	Mfr. Part No. AQ3118-02JTG Mouser Part No 576-AQ3118-02JTG New Product	Littelfuse	ESD Protection Diodes / TVS Diodes 18 V, 0.6 pF, 10 kV Learn More about Littelfuse aq3118 02jtg tvs diode array	Datasheet	1,948In Stock	Cut Tape £0.934 £0.585 £0.384 £0.299 Reel £0.207 View £0.271 £0.205 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Varistors MOV 510V 10mm 2.5KA 10% Silcn Coatng Strt Leads AEC-Q200 511KH10-AT YAGEO 1: £0.428 2,560In Stock 400On Order 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 400On Order	£0.428 £0.265 £0.206 £0.196 View £0.191 £0.184 £0.149	Min.: 1 Mult.: 1

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