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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 (CAD) Filter the results in the table by unit price based on your quantity.	Qty.
ESD Protection Diodes / TVS Diodes TVS AXIAL KA RATED - 3KA 430V BI AK3-430C-A Littelfuse 1: $136.57 4In Stock 56Expected 2026-12-15 New Product	Mfr. Part # AK3-430C-A Mouser Part # 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 2026-12-15	$136.57 $124.69	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 400W,17V5%,SMFBIDIRTVS 4SMF17CA-M3/I Vishay Semiconductors 1: $0.706 7,840In Stock New Product	Mfr. Part # 4SMF17CA-M3/I Mouser Part # 78-4SMF17CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,17V5%,SMFBIDIRTVS	Datasheet	7,840In Stock	Cut Tape $0.706 $0.487 $0.239 $0.199 Reel $0.091 View $0.138 $0.121 $0.109 $0.084	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes 400W,18V5%,SMFBIDIRTVS 4SMF18CA-M3/I Vishay Semiconductors 1: $0.706 7,632In Stock New Product	Mfr. Part # 4SMF18CA-M3/I Mouser Part # 78-4SMF18CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,18V5%,SMFBIDIRTVS	Datasheet	7,632In Stock	Cut Tape $0.706 $0.487 $0.239 $0.199 Reel $0.091 View $0.138 $0.121 $0.109 $0.084	Min.: 1 Mult.: 1 : 10,000
Industrial Surge Protectors SPD 120V Single Phase 36kA SDSA05 Square D 1: $158.40 7In Stock New Product	Mfr. Part # SDSA05 Mouser Part # 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	$158.40	Min.: 1 Mult.: 1
NTC Thermistors NTC LUG M5 10k 1% G24 64mm A NTCALUG54A103F640A Vishay / BC Components 1: $4.45 323In Stock New Product	Mfr. Part # NTCALUG54A103F640A Mouser Part # 594-NTCALUG54A103F6 New Product	Vishay / BC Components	NTC Thermistors NTC LUG M5 10k 1% G24 64mm A	Datasheet	323In Stock	$4.45 $3.34 $2.98 $2.82 View $2.75 $2.74 $2.38 $2.32 $2.23	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 350W,58V5%,SMFBIDIRTVS 4SMF58CAHM3/I Vishay Semiconductors 1: $0.691 6,969In Stock New Product	Mfr. Part # 4SMF58CAHM3/I Mouser Part # 78-4SMF58CAHM3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 350W,58V5%,SMFBIDIRTVS	Datasheet	6,969In Stock	Cut Tape $0.691 $0.474 $0.268 $0.212 Reel $0.13 View $0.179 $0.151 $0.144 $0.117	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes 400W,20V5%,SMFBIDIRTVS 4SMF20CA-M3/I Vishay Semiconductors 1: $0.706 7,871In Stock New Product	Mfr. Part # 4SMF20CA-M3/I Mouser Part # 78-4SMF20CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,20V5%,SMFBIDIRTVS	Datasheet	7,871In Stock	Cut Tape $0.706 $0.487 $0.239 $0.199 Reel $0.091 View $0.138 $0.121 $0.109 $0.084	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes 400W,26V5%,SMFBIDIRTVS 4SMF26CA-M3/I Vishay Semiconductors 1: $0.72 19,234In Stock New Product	Mfr. Part # 4SMF26CA-M3/I Mouser Part # 78-4SMF26CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,26V5%,SMFBIDIRTVS	Datasheet	19,234In Stock	Cut Tape $0.72 $0.505 $0.248 $0.207 Reel $0.095 View $0.144 $0.125 $0.112 $0.086	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes 400W,24V5%,SMFBIDIRTVS 4SMF24CA-M3/I Vishay Semiconductors 1: $0.72 7,471In Stock 20,000Expected 2026-11-25 New Product	Mfr. Part # 4SMF24CA-M3/I Mouser Part # 78-4SMF24CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,24V5%,SMFBIDIRTVS	Datasheet	7,471In Stock 20,000Expected 2026-11-25	Cut Tape $0.72 $0.505 $0.248 $0.207 Reel $0.095 View $0.144 $0.125 $0.112 $0.086	Min.: 1 Mult.: 1 : 10,000
Power Outlet Strips 13-Outlet Rackmount PDU, 1U Server Power Strip/Supply, 1x Front & 12x Rear Ports 1315B8H-RACK-PDU StarTech 1: $231.12 5In Stock New Product	Mfr. Part # 1315B8H-RACK-PDU Mouser Part # 179-1315B8HRACKPDU New Product	StarTech	Power Outlet Strips 13-Outlet Rackmount PDU, 1U Server Power Strip/Supply, 1x Front & 12x Rear Ports	Datasheet	5In Stock	$231.12 $203.05 $195.84 $195.81 View Quote	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 400W,10V5%,SMFBIDIRTVS 4SMF10CA-M3/I Vishay Semiconductors 1: $0.706 7,927In Stock New Product	Mfr. Part # 4SMF10CA-M3/I Mouser Part # 78-4SMF10CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,10V5%,SMFBIDIRTVS	Datasheet	7,927In Stock	Cut Tape $0.706 $0.487 $0.239 $0.199 Reel $0.091 View $0.138 $0.121 $0.109 $0.084	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes Automotive High Surge ESD - DFN1006-2L,Bi,5V PEC3205M1Q-AU_R1_005A1 Panjit 1: $0.187 17,969In Stock New Product	Mfr. Part # PEC3205M1Q-AU_R1_005A1 Mouser Part # 241-PEC3205M1QAUR15A New Product	Panjit	ESD Protection Diodes / TVS Diodes Automotive High Surge ESD - DFN1006-2L,Bi,5V	Datasheet	17,969In Stock	Cut Tape $0.187 $0.161 $0.088 $0.055 Reel $0.023 View $0.037 $0.032 $0.029 $0.02 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes 400W,16V5%,SMFBIDIRTVS 4SMF16CA-M3/I Vishay Semiconductors 1: $0.706 7,916In Stock New Product	Mfr. Part # 4SMF16CA-M3/I Mouser Part # 78-4SMF16CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,16V5%,SMFBIDIRTVS	Datasheet	7,916In Stock	Cut Tape $0.706 $0.487 $0.239 $0.199 Reel $0.091 View $0.138 $0.121 $0.109 $0.084	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes TVS 6KA RATED 450V BI AXIAL AK8-450C-FB Littelfuse 1: $193.48 4In Stock 56Expected 2026-12-15 New Product	Mfr. Part # AK8-450C-FB Mouser Part # 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 2026-12-15	$193.48 $176.64	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: $4.02 3,000In Stock New Product	Mfr. Part # 5.0SMDJ18A-E Mouser Part # 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 $4.02 $2.58 $2.09 $1.76 Reel $1.22 View $1.38 $1.26 $1.11 $1.08	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 5V, 6A, SOD882 SC1003-01ETG Littelfuse 1: $0.864 10,010In Stock New Product	Mfr. Part # SC1003-01ETG Mouser Part # 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 $0.864 $0.528 $0.337 $0.281 Reel $0.157 View $0.228 $0.194 $0.186 $0.151 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Surface Mount Fuses SFT 1206 32V 3A Sn Tape&Reel SFT120632V3A00TT Vishay / Sfernice 1: $0.893 3,500In Stock New Product	Mfr. Part # SFT120632V3A00TT Mouser Part # 594-SFT120632V3A00TT New Product	Vishay / Sfernice	Surface Mount Fuses SFT 1206 32V 3A Sn Tape&Reel Learn More about Vishay / Sfernice vishay sft sf2t time lag acting thin film fuses	Datasheet	3,500In Stock	Cut Tape $0.893 $0.708 $0.596 $0.524 View Reel $0.331 $0.471 $0.435 $0.40 $0.369 $0.331 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
NTC Thermistors NTC SMD 0603 47kO 5% B25/50 4050K BTN06G473J4AH1T00 Bourns 1: $0.173 8,000In Stock New Product	Mfr. Part # BTN06G473J4AH1T00 Mouser Part # 652-BTN06473J4AH1T00 New Product	Bourns	NTC Thermistors NTC SMD 0603 47kO 5% B25/50 4050K Learn More about Bourns btn06g ntc thermistors	Datasheet	8,000In Stock	Cut Tape $0.173 $0.16 $0.141 $0.115 Reel $0.086 View $0.101 $0.096 $0.082 $0.079 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Varistors 20mm Radial Disc-Kinked Leads,Bulk MOV-20D182KKC Bourns 1: $4.91 200In Stock New Product	Mfr. Part # MOV-20D182KKC Mouser Part # 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	$4.91 $3.11 $2.40 $2.25 View $1.97 $1.66 $1.61	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 18V, Uni-directional, 20A-80A SVS1871P3UU.N Semtech 1: $0.778 7,000In Stock New Product	Mfr. Part # SVS1871P3UU.N Mouser Part # 947-SVS1871P3UU.N New Product	Semtech	ESD Protection Diodes / TVS Diodes 18V, Uni-directional, 20A-80A		7,000In Stock	Cut Tape $0.778 $0.478 $0.304 $0.243 Reel $0.148 View $0.204 $0.173 $0.158 $0.138 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL DIN 315A ESR3XLDB0315XI Littelfuse 1: $834.83 3In Stock New Product	Mfr. Part # ESR3XLDB0315XI Mouser Part # 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	$834.83 $685.48 $623.79	Min.: 1 Mult.: 1
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 400A ESR3XLUB0400XI Littelfuse 1: $858.80 3In Stock New Product	Mfr. Part # ESR3XLUB0400XI Mouser Part # 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	$858.80 $705.18	Min.: 1 Mult.: 1
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 500A ESR3XLUB0500XI Littelfuse 1: $876.24 3In Stock New Product	Mfr. Part # ESR3XLUB0500XI Mouser Part # 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	$876.24 $745.82 $668.58	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes "20 V, 50pF, 5A," SP1120-01WTG Littelfuse 1: $0.878 8,583In Stock New Product	Mfr. Part # SP1120-01WTG Mouser Part # 576-SP1120-01WTG New Product	Littelfuse	ESD Protection Diodes / TVS Diodes "20 V, 50pF, 5A," Learn More about Littelfuse sp1120 01wtg tvs diodes		8,583In Stock	Cut Tape $0.878 $0.454 $0.338 $0.256 Reel $0.134 View $0.242 $0.122	Min.: 1 Mult.: 1 : 10,000
Surface Mount Fuses SFT 1206 63V 0.5A Sn Tape&Reel SFT120663VA500TT Vishay / Sfernice 1: $0.893 3,493In Stock New Product	Mfr. Part # SFT120663VA500TT Mouser Part # 594-SFT120663VA500TT New Product	Vishay / Sfernice	Surface Mount Fuses SFT 1206 63V 0.5A Sn Tape&Reel Learn More about Vishay / Sfernice vishay sft sf2t time lag acting thin film fuses	Datasheet	3,493In Stock	Cut Tape $0.893 $0.708 $0.596 $0.524 View Reel $0.331 $0.471 $0.435 $0.40 $0.369 $0.331 MouseReel Available	Min.: 1 Mult.: 1 : 5,000

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