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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 (USD) Filter the results in the table by unit price based on your quantity.	Qty.
ESD Protection Diodes / TVS Diodes BID Wkg5V 1CH SMD SOD323 Bkdn6V SDD32C36L01-LV YAGEO 1: $0.38 18,559In Stock New Product	Mfr. Part No. SDD32C36L01-LV Mouser Part No 603-SDD32C36L01-LV New Product	YAGEO	ESD Protection Diodes / TVS Diodes BID Wkg5V 1CH SMD SOD323 Bkdn6V	Datasheet	18,559In Stock	Cut Tape $0.38 $0.261 $0.128 $0.107 Reel $0.064 View $0.074 $0.061 $0.054 $0.044 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 600W,30V 5%, SlimSMA BIDIR TVS Vishay TA6F30CAHM3/H TA6F30CAHM3/H Vishay 1: $0.91 2,305In Stock New Product	Mfr. Part No. TA6F30CAHM3/H Mouser Part No 78-TA6F30CAHM3/H New Product	Vishay	ESD Protection Diodes / TVS Diodes 600W,30V 5%, SlimSMA BIDIR TVS Learn More about Vishay semi ta6fxxca par tvs	Datasheet	2,305In Stock	Cut Tape $0.91 $0.47 $0.371 $0.28 Reel $0.20 View $0.269 $0.199 $0.179 $0.176	Min.: 1 Mult.: 1 : 3,500
ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE DFN1006-2A Vishay VESD29D1-HD1HG3-08 VESD29D1-HD1HG3-08 Vishay 1: $0.52 9,750In Stock 10,000Expected 23/11/2026 New Product	Mfr. Part No. VESD29D1-HD1HG3-08 Mouser Part No 78-VESD29D1-HD1H3-08 New Product	Vishay	ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE DFN1006-2A		9,750In Stock 10,000Expected 23/11/2026	Cut Tape $0.52 $0.233 $0.177 $0.148 Reel $0.074 View $0.13 $0.128 $0.067	Min.: 1 Mult.: 1 : 10,000
Circuit Breakers BR 30A/2 Pole Com. Trip 120/240V 22K BRH230 Eaton Electrical 1: $453.14 3In Stock New Product	Mfr. Part No. BRH230 Mouser Part No 504-BRH230 New Product	Eaton Electrical	Circuit Breakers BR 30A/2 Pole Com. Trip 120/240V 22K	Datasheet	3In Stock	$453.14 $339.16 $317.56 View Quote	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes Zen TVS 600W 10V UNI SOD-123FL TR13 SZSMF6L10AT3G Littelfuse 1: $0.97 5,000In Stock New Product	Mfr. Part No. SZSMF6L10AT3G Mouser Part No 576-SZSMF6L10AT3G New Product	Littelfuse	ESD Protection Diodes / TVS Diodes Zen TVS 600W 10V UNI SOD-123FL TR13 Learn More about Littelfuse szsmf6l tvs diodes		5,000In Stock	Cut Tape $0.97 $0.609 $0.389 $0.29 Reel $0.199 View $0.235 $0.203 $0.145 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes Zen TVS 600W 12V BI SOD-123FL TR13 SZSMF6L12CAT3G Littelfuse 1: $1.02 1,847In Stock 5,000Expected 31/03/2027 New Product	Mfr. Part No. SZSMF6L12CAT3G Mouser Part No 576-SZSMF6L12CAT3G New Product	Littelfuse	ESD Protection Diodes / TVS Diodes Zen TVS 600W 12V BI SOD-123FL TR13 Learn More about Littelfuse szsmf6l tvs diodes	Datasheet	1,847In Stock 5,000Expected 31/03/2027	Cut Tape $1.02 $0.644 $0.411 $0.307 Reel $0.18 View $0.248 $0.214 $0.153 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SOT323 VCAN36A2-03GHE3A08 Vishay 1: $0.61 12,171In Stock New Product	Mfr. Part No. VCAN36A2-03GHE3A08 Mouser Part No 78-VCAN36A2-03HE3A08 New Product	Vishay	ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SOT323	Datasheet	12,171In Stock	Cut Tape $0.61 $0.283 $0.243 $0.181 Reel $0.126 View $0.159 $0.124 $0.106 $0.10	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes Low Voltage RailClamp 1.8V, 2-Line, 0.22pF ESD Protection RCLAMP01811ZA.F Semtech 1: $0.62 160,624In Stock	Mfr. Part No. RCLAMP01811ZA.F Mouser Part No 947-RCLAMP01811ZA.F	Semtech	ESD Protection Diodes / TVS Diodes Low Voltage RailClamp 1.8V, 2-Line, 0.22pF ESD Protection Learn More about Semtech usb type c protection	Datasheet	160,624In Stock	Cut Tape $0.62 $0.386 $0.247 $0.184 View Reel $0.101 $0.149 $0.129 $0.127 $0.108 $0.101 MouseReel Available	Min.: 1 Mult.: 1 : 15,000
Automotive Fuses Fuse - Mega 70V (SF51) 2-M8 holes 250A 0998250.UX-2M8 Littelfuse 1: $16.01 1,905In Stock 2,000Expected 11/01/2027	Mfr. Part No. 0998250.UX-2M8 Mouser Part No 576-0998250.UX-2M8	Littelfuse	Automotive Fuses Fuse - Mega 70V (SF51) 2-M8 holes 250A Learn More about Littelfuse off highway electric vehicle solutions	Datasheet	1,905In Stock 2,000Expected 11/01/2027	$16.01 $14.34 View Quote	Min.: 1 Mult.: 1
PTC (Positive Temperature Coefficient) Thermistors 35ohms 10A 410V 30% Vishay / Cera-Mite PTC305C20 PTC305C20 Vishay / Cera-Mite 1: $16.00 537In Stock	Mfr. Part No. PTC305C20 Mouser Part No 75-PTC305C20	Vishay / Cera-Mite	PTC (Positive Temperature Coefficient) Thermistors 35ohms 10A 410V 30%	Datasheet	537In Stock	$16.00 $14.14 $12.67 $12.00 View $11.11 $10.34 $10.32 $9.66 $9.05	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 5W,33V 5%,SMD PAR SM5S33AHM3/I Vishay Semiconductors 1: $4.69 1,500In Stock	Mfr. Part No. SM5S33AHM3/I Mouser Part No 78-SM5S33AHM3/I	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 5W,33V 5%,SMD PAR	Datasheet	1,500In Stock	Cut Tape $4.69 $3.09 $2.52 $2.13 Reel $1.83 View $1.90 $1.64	Min.: 1 Mult.: 1 : 750
ESD Protection Diodes / TVS Diodes Low Capacitance RailClamp 2-Line ESD Protection RCLAMP0822B.C Semtech 1: $1.50 21,305In Stock 33,000Expected 05/11/2026	Mfr. Part No. RCLAMP0822B.C Mouser Part No 947-RCLAMP0822B.C	Semtech	ESD Protection Diodes / TVS Diodes Low Capacitance RailClamp 2-Line ESD Protection Learn More about Semtech tvs esd suppressors	Datasheet	21,305In Stock 33,000Expected 05/11/2026	Cut Tape $1.50 $0.95 $0.621 $0.48 Reel $0.387 View $0.407 $0.353 $0.34 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 24V 15A 30kV SOD882 Bi-dir TVS SC24COM-01ETG Littelfuse 1: $0.58 38,960In Stock	Mfr. Part No. SC24COM-01ETG Mouser Part No 576-SC24COM-01ETG	Littelfuse	ESD Protection Diodes / TVS Diodes 24V 15A 30kV SOD882 Bi-dir TVS Learn More about Littelfuse sc24com 01etg tvs diode	Datasheet	38,960In Stock	Cut Tape $0.58 $0.275 $0.234 $0.174 Reel $0.101 View $0.155 $0.096 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes Zen TVS 5000W 20V Bi DO-214AB TR13 SZ5KASMC20CAT3G Littelfuse 1: $3.92 7,355In Stock	Mfr. Part No. SZ5KASMC20CAT3G Mouser Part No 576-SZ5KASMC20CAT3G	Littelfuse	ESD Protection Diodes / TVS Diodes Zen TVS 5000W 20V Bi DO-214AB TR13 Learn More about Littelfuse sz5kasmc tvs diodes	Datasheet	7,355In Stock	Cut Tape $3.92 $2.57 $2.16 $1.87 View Reel $1.49 $1.58 $1.49 $1.49 Quote MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes Zen TVS 5000W 26V Bi DO-214AB TR13 SZ5KASMC26CAT3G Littelfuse 1: $3.92 3,465In Stock	Mfr. Part No. SZ5KASMC26CAT3G Mouser Part No 576-SZ5KASMC26CAT3G	Littelfuse	ESD Protection Diodes / TVS Diodes Zen TVS 5000W 26V Bi DO-214AB TR13 Learn More about Littelfuse sz5kasmc tvs diodes	Datasheet	3,465In Stock	Cut Tape $3.92 $2.57 $2.16 $1.87 Reel $1.49 View $1.58 $1.49 $1.45 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Thermal Cut-offs 16V 500A MAX HCRTP-MINI-B Littelfuse 1: $1.28 7,598In Stock 4,000Expected 10/02/2027 New Product	Mfr. Part No. HCRTP-MINI-B Mouser Part No 650-HCRTP-MINI-B New Product	Littelfuse	Thermal Cut-offs 16V 500A MAX	Datasheet	7,598In Stock 4,000Expected 10/02/2027	$1.28 $1.13 $1.07 $0.948 View $0.746 $0.713 $0.648	Min.: 1 Mult.: 1
Varistors 20mm Radial Disc MOV - Kinked Leads, T&R MOV-20D621KKTR Bourns 1: $1.77 8,024In Stock 6,000Expected 11/11/2026	Mfr. Part No. MOV-20D621KKTR Mouser Part No 652-MOV-20D621KKTR	Bourns	Varistors 20mm Radial Disc MOV - Kinked Leads, T&R Learn More about Bourns mov xd metal oxide varistors	Datasheet	8,024In Stock 6,000Expected 11/11/2026	Cut Tape $1.77 $1.09 $0.749 Reel $0.749 $0.618 View $0.504 $0.461 MouseReel Available	Min.: 1 Mult.: 1 : 250
ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SMF DO219AB SMF24A-HE3_A08 Vishay Semiconductors 1: $0.68 23,470In Stock	Mfr. Part No. SMF24A-HE3_A08 Mouser Part No 78-SMF24A-HE3A08	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SMF DO219AB	Datasheet	23,470In Stock	Cut Tape $0.68 $0.427 $0.273 $0.204 Reel $0.141 View $0.165 $0.139 $0.118 $0.102	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SMF DO219AB SMF36A-HE3_A08 Vishay Semiconductors 1: $0.68 26,915In Stock	Mfr. Part No. SMF36A-HE3_A08 Mouser Part No 78-SMF36A-HE3A08	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SMF DO219AB	Datasheet	26,915In Stock	Cut Tape $0.68 $0.427 $0.273 $0.204 Reel $0.141 View $0.165 $0.139 $0.118 $0.112	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes Zen TVS 5000W 33V Bi DO-214AB TR13 SZ5KASMC33CAT3G Littelfuse 1: $3.99 3,315In Stock	Mfr. Part No. SZ5KASMC33CAT3G Mouser Part No 576-SZ5KASMC33CAT3G	Littelfuse	ESD Protection Diodes / TVS Diodes Zen TVS 5000W 33V Bi DO-214AB TR13 Learn More about Littelfuse sz5kasmc tvs diodes	Datasheet	3,315In Stock	Cut Tape $3.99 $2.61 $2.16 $1.87 Reel $1.49 View $1.58 $1.49 $1.45 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Varistors 35VAC 45VDC 1800pF AEC-Q200 V45MLA1812NRAUTO Littelfuse 1: $3.05 1,404In Stock	Mfr. Part No. V45MLA1812NRAUTO Mouser Part No 576-V45MLA1812NRAUTO	Littelfuse	Varistors 35VAC 45VDC 1800pF AEC-Q200 Learn More about Littelfuse mla1812nr varistors	Datasheet	1,404In Stock	Cut Tape $3.05 $2.20 $2.07 $1.77 Reel $1.20 View $1.66 $1.45 $1.18 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors High Energy GDT 25mm 500V, T2 terminal GDT225E-50-T2-BX Bourns 1: $27.50 118In Stock	Mfr. Part No. GDT225E-50-T2-BX Mouser Part No 652-GDT225E-50-T2-BX	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors High Energy GDT 25mm 500V, T2 terminal Learn More about Bourns gdt212e gdt216e gdt220e gdt225e gdts	Datasheet	118In Stock	$27.50 $22.82 $21.05 $17.43 View $16.58 $15.08	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes EMIClamp 2-Line Interface Circuit for Automotive Ethernet ECLAMP10012PQTCT Semtech 1: $2.03 5,935In Stock 6,000Expected 05/11/2026	Mfr. Part No. ECLAMP10012PQTCT Mouser Part No 947-ECLAMP10012PQTCT	Semtech	ESD Protection Diodes / TVS Diodes EMIClamp 2-Line Interface Circuit for Automotive Ethernet	Datasheet	5,935In Stock 6,000Expected 05/11/2026	Cut Tape $2.03 $1.27 $1.02 $0.851 Reel $0.56 View $0.663 $0.571 $0.516 $0.509 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Connectorised Surge Protectors Data Surge Protector SPD THUNDERBOLT Outdoor Gigabit Ethernet/PoE++ Shielded RJ45 SASD, GDT CE Compliant, with Ground Kit 1101-1080 Transtector 1: $535.00 39In Stock 1On Order New At Mouser	Mfr. Part No. 1101-1080 Mouser Part No 21-1101-1080 New At Mouser	Transtector	Connectorised Surge Protectors Data Surge Protector SPD THUNDERBOLT Outdoor Gigabit Ethernet/PoE++ Shielded RJ45 SASD, GDT CE Compliant, with Ground Kit	Datasheet	39In Stock 1On Order	$535.00	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors Uni-Curve w/ bare leads & epoxy 192-503QET-A01 Honeywell 1: $50.84 820In Stock	Mfr. Part No. 192-503QET-A01 Mouser Part No 785-192-503QET-A01	Honeywell	NTC (Negative Temperature Coefficient) Thermistors Uni-Curve w/ bare leads & epoxy	Datasheet	820In Stock	$50.84 $46.22 $42.37 $37.53 View $36.91 $34.62 Quote	Min.: 1 Mult.: 1

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Circuit Protection

Types of Circuit Protection