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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 (USD) Filter the results in the table by unit price based on your quantity.	Qty.
ESD Protection Diodes / TVS Diodes 30V, 100A ,DNF2020-6L SC3000-01UTG Littelfuse 1: $1.85 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 $1.85 $1.16 $0.761 $0.587 Reel $0.473 View $0.498 $0.435 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: $0.82 7,000In Stock 100Expected 2026/12/21 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 2026/12/21	Cut Tape $0.82 $0.511 $0.334 $0.252 View Reel $0.191 $0.229 $0.211 $0.205 $0.191 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 10kO 1% B25/50 3380K BTN06G103F3HF1T0A Bourns 1: $0.12 7,775In Stock New Product	Mfr. Part No. BTN06G103F3HF1T0A Mouser Part No 652-BTN06103F3HF1T0A New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 10kO 1% B25/50 3380K Learn More about Bourns btn06g ntc thermistors	Datasheet	7,775In Stock	Cut Tape $0.12 $0.105 $0.092 $0.086 Reel $0.063 View $0.076 $0.067 $0.06 $0.058 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 100kO 1% B25/50 4250K BTN06G104F4EF1T0A Bourns 1: $0.13 8,000In Stock New Product	Mfr. Part No. BTN06G104F4EF1T0A Mouser Part No 652-BTN06104F4EF1T0A New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 100kO 1% B25/50 4250K Learn More about Bourns btn06g ntc thermistors	Datasheet	8,000In Stock	Cut Tape $0.13 $0.122 $0.107 $0.10 Reel $0.074 View $0.088 $0.078 $0.07 $0.067 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 100kO 5% B25/50 4250K BTN06G104J4EH1T0A Bourns 1: $0.15 7,990In Stock New Product	Mfr. Part No. BTN06G104J4EH1T0A Mouser Part No 652-BTN06104J4EH1T0A New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 100kO 5% B25/50 4250K Learn More about Bourns btn06g ntc thermistors	Datasheet	7,990In Stock	Cut Tape $0.15 $0.133 $0.117 $0.094 Reel $0.071 View $0.083 $0.079 $0.067 $0.065 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes 10V, Uni-directional, 20A-80A SVS1071P3UU.N Semtech 1: $0.69 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 $0.69 $0.43 $0.276 $0.205 Reel $0.119 View $0.166 $0.143 $0.141 $0.113 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes UCLAMP3311T 3.3V SLP-10K UCLAMP3311T.TNT Semtech 1: $0.911 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 $0.911 $0.565 $0.369 $0.278 View Reel $0.178 $0.254 $0.233 $0.226 $0.178 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL DIN 315A ESR3XLDB0315XI Littelfuse 1: $579.85 3In Stock New Product	Mfr. Part No. ESR3XLDB0315XI Mouser Part No 576-ESR3XLDB0315XI New Product	Littelfuse	Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL DIN 315A Learn More about Littelfuse esr high speed square body fuses	Datasheet	3In Stock	$579.85 $476.12 $433.26	Min.: 1 Mult.: 1
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 400A ESR3XLUB0400XI Littelfuse 1: $596.50 3In Stock New Product	Mfr. Part No. ESR3XLUB0400XI Mouser Part No 576-ESR3XLUB0400XI New Product	Littelfuse	Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 400A Learn More about Littelfuse esr high speed square body fuses	Datasheet	3In Stock	$596.50 $489.80 $445.84 Quote Quote	Min.: 1 Mult.: 1
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 500A ESR3XLUB0500XI Littelfuse 1: $608.61 3In Stock New Product	Mfr. Part No. ESR3XLUB0500XI Mouser Part No 576-ESR3XLUB0500XI New Product	Littelfuse	Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 500A Learn More about Littelfuse esr high speed square body fuses	Datasheet	3In Stock	$608.61 $518.02 $464.37	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 10kO 5% B25/50 3380K BTN06G103J3HH1T0A Bourns 1: $0.12 7,840In Stock New Product	Mfr. Part No. BTN06G103J3HH1T0A Mouser Part No 652-BTN06103J3HH1T0A New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 10kO 5% B25/50 3380K Learn More about Bourns btn06g ntc thermistors	Datasheet	7,840In Stock	Cut Tape $0.12 $0.11 $0.098 $0.08 Reel $0.06 View $0.07 $0.067 $0.057 $0.055 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 47kO 1% B25/50 4050K BTN06G473F4AF1T00 Bourns 1: $0.13 7,975In Stock New Product	Mfr. Part No. BTN06G473F4AF1T00 Mouser Part No 652-BTN06473F4AF1T00 New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 47kO 1% B25/50 4050K Learn More about Bourns btn06g ntc thermistors	Datasheet	7,975In Stock	Cut Tape $0.13 $0.117 $0.104 $0.085 Reel $0.064 View $0.076 $0.071 $0.06 $0.059 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0805 10K B25/85 3435 BTN08G103F3JF2T00 Bourns 1: $0.17 2,800In Stock New Product	Mfr. Part No. BTN08G103F3JF2T00 Mouser Part No 652-TN08G103F3JF2T00 New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0805 10K B25/85 3435 Learn More about Bourns btn08g smd ntc thermistors	Datasheet	2,800In Stock	Cut Tape $0.17 $0.148 $0.13 $0.104 Reel $0.078 View $0.091 $0.087 $0.076 $0.072 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0805 47K B25/85 3950 BTN08G473H3UF2T00 Bourns 1: $0.17 2,800In Stock New Product	Mfr. Part No. BTN08G473H3UF2T00 Mouser Part No 652-TN08G473H3UF2T00 New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0805 47K B25/85 3950 Learn More about Bourns btn08g smd ntc thermistors	Datasheet	2,800In Stock	Cut Tape $0.17 $0.148 $0.137 $0.109 Reel $0.065 View $0.10 $0.084 $0.076 $0.062 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes 12V, Uni-directional, 20A-80A SVS1271P3UU.N Semtech 1: $0.69 8,000In Stock New Product	Mfr. Part No. SVS1271P3UU.N Mouser Part No 947-SVS1271P3UU.N New Product	Semtech	ESD Protection Diodes / TVS Diodes 12V, Uni-directional, 20A-80A		8,000In Stock	Cut Tape $0.69 $0.43 $0.276 $0.205 Reel $0.119 View $0.166 $0.143 $0.141 $0.113 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes 36V, Uni-directional, 20A-80A SVS3671P3UU.N Semtech 1: $0.69 8,000In Stock New Product	Mfr. Part No. SVS3671P3UU.N Mouser Part No 947-SVS3671P3UU.N New Product	Semtech	ESD Protection Diodes / TVS Diodes 36V, Uni-directional, 20A-80A		8,000In Stock	Cut Tape $0.69 $0.43 $0.276 $0.205 Reel $0.119 View $0.166 $0.143 $0.141 $0.113 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes 5V, 6A, SOD882 SC1003-01ETG Littelfuse 1: $0.79 10,010In Stock New Product	Mfr. Part No. SC1003-01ETG Mouser Part No 576-SC1003-01ETG New Product	Littelfuse	ESD Protection Diodes / TVS Diodes 5V, 6A, SOD882 Learn More about Littelfuse tvs spa diode arrays	Datasheet	10,010In Stock	Cut Tape $0.79 $0.497 $0.317 $0.237 Reel $0.138 View $0.192 $0.165 $0.163 $0.13 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 47kO 5% B25/50 4050K BTN06G473J4AH1T00 Bourns 1: $0.11 6,997In Stock New Product	Mfr. Part No. BTN06G473J4AH1T00 Mouser Part No 652-BTN06473J4AH1T00 New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 47kO 5% B25/50 4050K Learn More about Bourns btn06g ntc thermistors	Datasheet	6,997In Stock	Cut Tape $0.11 $0.10 $0.087 $0.081 Reel $0.059 View $0.071 $0.063 $0.056 $0.055 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Varistors 20mm Radial Disc-Kinked Leads,Bulk MOV-20D182KKC Bourns 1: $3.41 200In Stock New Product	Mfr. Part No. MOV-20D182KKC Mouser Part No 652-MOV-20D182KKC New Product	Bourns	Varistors 20mm Radial Disc-Kinked Leads,Bulk Learn More about Bourns mov kc metal oxide varistors	Datasheet	200In Stock	$3.41 $2.16 $1.67 $1.56 View $1.37 $1.15 $1.12	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0805 10K B25/85 3970 BTN08G103J3VH2T00 Bourns 1: $0.16 2,800In Stock New Product	Mfr. Part No. BTN08G103J3VH2T00 Mouser Part No 652-TN08G103J3VH2T00 New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0805 10K B25/85 3970 Learn More about Bourns btn08g smd ntc thermistors	Datasheet	2,800In Stock	Cut Tape $0.16 $0.141 $0.13 $0.104 Reel $0.062 View $0.095 $0.08 $0.072 $0.058 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes 18V, Uni-directional, 20A-80A SVS1871P3UU.N Semtech 1: $0.69 7,996In Stock New Product	Mfr. Part No. SVS1871P3UU.N Mouser Part No 947-SVS1871P3UU.N New Product	Semtech	ESD Protection Diodes / TVS Diodes 18V, Uni-directional, 20A-80A		7,996In Stock	Cut Tape $0.69 $0.43 $0.276 $0.205 Reel $0.119 View $0.166 $0.143 $0.141 $0.113 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: $0.57 2,560In Stock 400Expected 2027/01/11 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 2027/01/11	$0.57 $0.354 $0.274 $0.261 View $0.255 $0.245 $0.199 $0.198	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 100kO 2% B25/50 4250K BTN06G104G4EF1T0A Bourns 1: $0.16 8,000In Stock New Product	Mfr. Part No. BTN06G104G4EF1T0A Mouser Part No 652-BTN061044EF1T0A New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 100kO 2% B25/50 4250K Learn More about Bourns btn06g ntc thermistors	Datasheet	8,000In Stock	Cut Tape $0.16 $0.141 $0.124 $0.099 Reel $0.076 View $0.087 $0.083 $0.072 $0.069 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Varistors 20mm Radial Disc-Kinked Leads,Bulk MOV-20D152KKC Bourns 1: $3.41 175In Stock New Product	Mfr. Part No. MOV-20D152KKC Mouser Part No 652-MOV-20D152KKC New Product	Bourns	Varistors 20mm Radial Disc-Kinked Leads,Bulk Learn More about Bourns mov kc metal oxide varistors	Datasheet	175In Stock	$3.41 $2.16 $1.67 $1.56 View $1.37 $1.15 $1.12	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0805 10K B25/85 3970 BTN08G103F3VF2T00 Bourns 1: $0.17 2,800In Stock New Product	Mfr. Part No. BTN08G103F3VF2T00 Mouser Part No 652-TN08G103F3VF2T00 New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0805 10K B25/85 3970 Learn More about Bourns btn08g smd ntc thermistors	Datasheet	2,800In Stock	Cut Tape $0.17 $0.148 $0.13 $0.104 Reel $0.078 View $0.091 $0.087 $0.076 $0.072 MouseReel Available	Min.: 1 Mult.: 1 : 4,000

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Circuit Protection

Types of Circuit Protection