.hide-partial { max-height: none; } .show-more { display: none; }

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.
More...

Please view our selection of circuit protection devices below.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Circuit Protection

List Images

Results: 362,133

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

Filter by

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (HKD) Filter the results in the table by unit price based on your quantity.	Qty.
ESD Protection Diodes / TVS Diodes TVS 6KA RATED 450V BI AXIAL AK8-450C-FB Littelfuse 1: HK$1,136.50 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	HK$1,136.50 HK$1,008.43	Min.: 1 Mult.: 1
Power Outlet Strips 13-Outlet Rackmount PDU, 1U Server Power Strip/Supply, 1x Front & 12x Rear Ports 1315B8H-RACK-PDU StarTech 1: HK$1,319.31 5In Stock New Product	Mfr. Part No. 1315B8H-RACK-PDU Mouser Part No 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	HK$1,319.31 HK$1,159.10 HK$1,117.92 HK$1,117.76 View Quote	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes Automotive High Surge ESD - SOT-23,Uni,5V PE4305C2A-AU_R1_007A1 Panjit 1: HK$3.62 5,398In 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	5,398In Stock	Cut Tape HK$3.62 HK$2.48 HK$1.22 HK$1.02 Reel HK$0.608 View HK$0.707 HK$0.575 HK$0.51 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: HK$4.03 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 HK$4.03 HK$2.78 HK$1.36 HK$1.13 Reel HK$0.575 View HK$0.789 HK$0.69 HK$0.658 HK$0.518	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: HK$25.40 315In 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	315In Stock	HK$25.40 HK$19.07 HK$17.02 HK$16.11 View HK$15.70 HK$15.62 HK$13.56 HK$13.23 HK$12.74	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 350W,58V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF58CAHM3/I 4SMF58CAHM3/I Vishay Semiconductors 1: HK$4.85 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 HK$4.85 HK$3.01 HK$1.92 HK$1.44 Reel HK$0.838 View HK$1.16 HK$1.00 HK$0.986 HK$0.789	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: HK$0.904 17,959In 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	17,959In Stock	Cut Tape HK$0.904 HK$0.633 HK$0.312 HK$0.263 View Reel HK$0.148 HK$0.197 HK$0.173 HK$0.148 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes 400W,16V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF16CA-M3/I 4SMF16CA-M3/I Vishay Semiconductors 1: HK$4.03 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 HK$4.03 HK$2.78 HK$1.36 HK$1.13 Reel HK$0.575 View HK$0.789 HK$0.69 HK$0.658 HK$0.518	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: HK$4.03 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 HK$4.03 HK$2.78 HK$1.36 HK$1.13 Reel HK$0.575 View HK$0.789 HK$0.69 HK$0.658 HK$0.518	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: HK$4.11 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 HK$4.11 HK$2.89 HK$1.41 HK$1.18 Reel HK$0.592 View HK$0.822 HK$0.715 HK$0.682 HK$0.534	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes TVS AXIAL KA RATED - 3KA 430V BI AK3-430C-A Littelfuse 1: HK$802.27 4In Stock 56Expected 1/2/2027 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 1/2/2027	HK$802.27 HK$711.85 HK$704.62	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 400W,17V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF17CA-M3/I 4SMF17CA-M3/I Vishay Semiconductors 1: HK$4.03 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 HK$4.03 HK$2.78 HK$1.36 HK$1.13 Reel HK$0.575 View HK$0.789 HK$0.69 HK$0.658 HK$0.518	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: HK$4.03 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 HK$4.03 HK$2.78 HK$1.36 HK$1.13 Reel HK$0.575 View HK$0.789 HK$0.69 HK$0.658 HK$0.518	Min.: 1 Mult.: 1 : 10,000
Industrial Surge Protectors SPD 120V Single Phase 36kA SDSA05 Square D 1: HK$904.20 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	HK$904.20	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 400W,24V5%,SMFBIDIRTVS Vishay Semiconductors 4SMF24CA-M3/I 4SMF24CA-M3/I Vishay Semiconductors 1: HK$4.11 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 9/11/2026 10,000 Expected 25/11/2026 Factory Lead Time: 10 Weeks	Cut Tape HK$4.11 HK$2.89 HK$1.41 HK$1.18 Reel HK$0.592 View HK$0.822 HK$0.715 HK$0.682 HK$0.534	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: HK$23.02 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 HK$23.02 HK$14.80 HK$12.00 HK$10.11 HK$8.22 Reel HK$6.99	Min.: 1 Mult.: 1 : 3,000
Varistors MOV 510V 10mm 2.5KA 10% Silcn Coatng Strt Leads AEC-Q200 511KH10-AT YAGEO 1: HK$4.69 2,560In Stock 400Expected 11/1/2027 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 11/1/2027	HK$4.69 HK$2.90 HK$2.25 HK$2.15 View HK$2.10 HK$2.01 HK$1.64 HK$1.63	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 100kO 2% B25/50 4250K BTN06G104G4EF1T0A Bourns 1: HK$1.32 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 HK$1.32 HK$1.16 HK$1.02 HK$0.814 Reel HK$0.617 View HK$0.715 HK$0.682 HK$0.592 HK$0.567 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Varistors 20mm Radial Disc-Kinked Leads,Bulk MOV-20D152KKC Bourns 1: HK$28.03 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	HK$28.03 HK$17.76 HK$13.73 HK$12.82 View HK$11.26 HK$9.45 HK$9.21	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0805 10K B25/85 3970 BTN08G103F3VF2T00 Bourns 1: HK$1.40 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 HK$1.40 HK$1.22 HK$1.07 HK$0.855 Reel HK$0.641 View HK$0.748 HK$0.715 HK$0.617 HK$0.592 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0805 100K B25/85 4100 BTN08G104J4BH2T00 Bourns 1: HK$1.32 2,800In Stock New Product	Mfr. Part No. BTN08G104J4BH2T00 Mouser Part No 652-TN08G104J4H2T00 New Product	Bourns	NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0805 100K B25/85 4100 Learn More about Bourns btn08g smd ntc thermistors	Datasheet	2,800In Stock	Cut Tape HK$1.32 HK$1.16 HK$1.07 HK$0.847 Reel HK$0.51 View HK$0.781 HK$0.658 HK$0.592 HK$0.477 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 10kO 3% B25/50 3380K BTN06G103H3HF1T0A Bourns 1: HK$1.07 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 HK$1.07 HK$0.945 HK$0.83 HK$0.682 Reel HK$0.51 View HK$0.60 HK$0.567 HK$0.485 HK$0.469 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
NTC (Negative Temperature Coefficient) Thermistors NTC SMD 0603 47kO 2% B25/50 4050K BTN06G473G4AF1T00 Bourns 1: HK$1.07 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 HK$1.07 HK$0.97 HK$0.855 HK$0.699 Reel HK$0.526 View HK$0.617 HK$0.584 HK$0.501 HK$0.485 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes 15V, Uni-directional, 20A-80A SVS1571P3UU.N Semtech 1: HK$5.67 8,000In 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		8,000In Stock	Cut Tape HK$5.67 HK$3.53 HK$2.26 HK$1.69 Reel HK$0.978 View HK$1.36 HK$1.18 HK$1.16 HK$0.929 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL DIN 315A ESR3XLDB0315XI Littelfuse 1: HK$4,765.46 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	HK$4,765.46 HK$3,912.97 HK$3,560.82	Min.: 1 Mult.: 1

Circuit Protection

Types of Circuit Protection

Customer Service Office

Company

Resources

Support

Share This

Circuit Protection

Types of Circuit Protection