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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.
Resettable Fuses - PPTC PTC 2.5A 30V RADIAL LEADED UNCOATED MF-R250U Bourns 1: $0.53 7,520In Stock	Mfr. Part No. MF-R250U Mouser Part No 652-MF-R250U	Bourns	Resettable Fuses - PPTC PTC 2.5A 30V RADIAL LEADED UNCOATED Learn More about Bourns mf r	Datasheet	7,520In Stock	$0.53 $0.463 $0.312 $0.273 View $0.262 $0.237	Min.: 1 Mult.: 1
Varistors PV 140V 10% PV140K4032R2 Bourns 1: $0.83 4,456In Stock	Mfr. Part No. PV140K4032R2 Mouser Part No 652-PV140K4032R2	Bourns	Varistors PV 140V 10% Learn More about Bourns pv low medium varistors	Datasheet	4,456In Stock	Cut Tape $0.83 $0.53 $0.434 $0.415 Reel $0.394 View $0.379 $0.368 $0.364 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Thermal Cut-offs HC TCO 77C BL-51 SA77SB0 Bourns 1: $0.93 23,090In Stock	Mfr. Part No. SA77SB0 Mouser Part No 652-SA77SB0	Bourns	Thermal Cut-offs HC TCO 77C BL-51 Learn More about Bourns sa smt breaker	Datasheet	23,090In Stock	Cut Tape $0.93 $0.876 $0.82 $0.782 View Reel $0.514 $0.748 $0.719 $0.634 $0.554 $0.514 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Thermal Cut-offs 72C Reinforced Cover SMD HC TCO SC72AAA Bourns 1: $0.96 4,409In Stock	Mfr. Part No. SC72AAA Mouser Part No 652-SC72AAA	Bourns	Thermal Cut-offs 72C Reinforced Cover SMD HC TCO Learn More about Bourns sc mini breakers	Datasheet	4,409In Stock	Cut Tape $0.96 $0.90 $0.874 $0.825 View Reel $0.664 $0.785 $0.78 $0.731 $0.704 $0.664 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Surface Mount Fuses 4A Fast Acting 0603 SinglFuse SF-0603F400-2 Bourns 1: $0.64 21,605In Stock	Mfr. Part No. SF-0603F400-2 Mouser Part No 652-SF-0603F400-2	Bourns	Surface Mount Fuses 4A Fast Acting 0603 SinglFuse Learn More about Bourns fast acting thin film smd fuses	Datasheet	21,605In Stock	Cut Tape $0.64 $0.509 $0.429 $0.377 View Reel $0.245 $0.339 $0.319 $0.297 $0.273 $0.245 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Surface Mount Fuses 1A 32V TIME DELAY SF-0603SP100-2 Bourns 1: $0.76 14,362In Stock	Mfr. Part No. SF-0603SP100-2 Mouser Part No 652-SF-0603SP100-2	Bourns	Surface Mount Fuses 1A 32V TIME DELAY Learn More about Bourns sf 0603sp r metal foil smd fuses	Datasheet	14,362In Stock	Cut Tape $0.76 $0.642 $0.509 $0.475 View Reel $0.277 $0.398 $0.371 $0.351 $0.294 $0.277 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Surface Mount Fuses 6A 50V TIME DELAY SF-0603SP600-2 Bourns 1: $0.76 13,405In Stock	Mfr. Part No. SF-0603SP600-2 Mouser Part No 652-SF-0603SP600-2	Bourns	Surface Mount Fuses 6A 50V TIME DELAY Learn More about Bourns sf 0603sp r metal foil smd fuses	Datasheet	13,405In Stock	Cut Tape $0.76 $0.604 $0.509 $0.447 View Reel $0.27 $0.335 $0.318 $0.301 $0.287 $0.27 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Surface Mount Fuses 7A Fast Acting 1206 SinglFuse SF-1206F700-2 Bourns 1: $0.60 25,688In Stock	Mfr. Part No. SF-1206F700-2 Mouser Part No 652-SF-1206F700-2	Bourns	Surface Mount Fuses 7A Fast Acting 1206 SinglFuse Learn More about Bourns fast acting thin film smd fuses	Datasheet	25,688In Stock	Cut Tape $0.60 $0.477 $0.402 $0.353 View Reel $0.223 $0.327 $0.293 $0.27 $0.249 $0.223 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Surface Mount Fuses 3A 32V TIME DELAY SF-1206SP300-2 Bourns 1: $0.77 15,678In Stock	Mfr. Part No. SF-1206SP300-2 Mouser Part No 652-SF-1206SP300-2	Bourns	Surface Mount Fuses 3A 32V TIME DELAY Learn More about Bourns precision slow blow smd fuses	Datasheet	15,678In Stock	Cut Tape $0.77 $0.656 $0.548 $0.487 View Reel $0.333 $0.438 $0.404 $0.373 $0.333 $0.333 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Thyristor Surge Protection Devices - TSPD Very Low Voltage Bidirectional TISP4030L1AJR-S Bourns 1: $0.80 18,281In Stock	Mfr. Part No. TISP4030L1AJR-S Mouser Part No 652-TISP4030L1AJR-S	Bourns	Thyristor Surge Protection Devices - TSPD Very Low Voltage Bidirectional Learn More about Bourns TISP protectors for VDSL GFast	Datasheet	18,281In Stock	Cut Tape $0.80 $0.435 $0.294 $0.226 Reel $0.168 View $0.197 $0.188 $0.156 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Thyristor Surge Protection Devices - TSPD Very Low Voltage Bidirectional TISP4040L1BJR-S Bourns 1: $0.78 22,447In Stock	Mfr. Part No. TISP4040L1BJR-S Mouser Part No 652-TISP4040L1BJR-S	Bourns	Thyristor Surge Protection Devices - TSPD Very Low Voltage Bidirectional Learn More about Bourns TISP protectors for VDSL GFast	Datasheet	22,447In Stock	Cut Tape $0.78 $0.484 $0.30 $0.234 Reel $0.181 View $0.211 $0.166 $0.152 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Power Outlet Strips Rack PDU 2G, Metered Zerou, 30A, 200/208V AP8841 APC by Schneider Electric Restricted Availability	Mfr. Part No. AP8841 Mouser Part No 679-AP8841	APC by Schneider Electric	Power Outlet Strips Rack PDU 2G, Metered Zerou, 30A, 200/208V Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability
PTC (Positive Temperature Coefficient) Thermistors PTC 3.3Kohms 1% Linear Vishay / Dale TFPT0805L3301FM TFPT0805L3301FM Vishay / Dale 1: $1.27 4,380In Stock	Mfr. Part No. TFPT0805L3301FM Mouser Part No 71-TFPT0805L3301FM	Vishay / Dale	PTC (Positive Temperature Coefficient) Thermistors PTC 3.3Kohms 1% Linear Learn More about Vishay / Dale vishay dale tfpt thermistors	Datasheet	4,380In Stock	Cut Tape $1.27 $0.951 $0.761 $0.716 View Reel $0.51 $0.698 $0.587 $0.546 $0.51 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
PTC (Positive Temperature Coefficient) Thermistors PTC 10Kohms 5% Linear Vishay / Dale TFPT1206L1002JV TFPT1206L1002JV Vishay / Dale 1: $0.93 3,429In Stock	Mfr. Part No. TFPT1206L1002JV Mouser Part No 71-TFPT1206L1002JV	Vishay / Dale	PTC (Positive Temperature Coefficient) Thermistors PTC 10Kohms 5% Linear Learn More about Vishay / Dale vishay dale tfpt thermistors	Datasheet	3,429In Stock	Cut Tape $0.93 $0.875 $0.82 $0.782 Reel $0.616 View $0.748 $0.678 $0.581 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
ESD Protection Diodes / TVS Diodes TVS DIODES ESD103B102ELE6327XTMA1 Infineon Technologies 1: $0.39 68,206In Stock	Mfr. Part No. ESD103B102ELE6327XTMA1 Mouser Part No 726-103-ELE6327XTMA1	Infineon Technologies	ESD Protection Diodes / TVS Diodes TVS DIODES	Datasheet	68,206In Stock	Cut Tape $0.39 $0.177 $0.148 $0.121 View Reel $0.082 $0.117 $0.114 $0.105 $0.082 MouseReel Available	Min.: 1 Mult.: 1 : 15,000
ESD Protection Diodes / TVS Diodes 400W 30V 5% SMA (DO-214AC) SMAJ30CAHE3_A/H Vishay Semiconductors 1: $0.78 12,704In Stock	Mfr. Part No. SMAJ30CAHE3_A/H Mouser Part No 78-SMAJ30CAHE3_A/H	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W 30V 5% SMA (DO-214AC) Learn More about Vishay Semiconductors vishay semi esmp package evolution	Datasheet	12,704In Stock	Cut Tape $0.78 $0.354 $0.312 $0.238 Reel $0.152 View $0.16 $0.136 MouseReel Available	Min.: 1 Mult.: 1 : 1,800
ESD Protection Diodes / TVS Diodes 12V 1000W UniDir TransZorb 5% Tol SMBJ12A-M3/5B Vishay Semiconductors 1: $0.69 13,366In Stock	Mfr. Part No. SMBJ12A-M3/5B Mouser Part No 78-SMBJ12A-M35B	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 12V 1000W UniDir TransZorb 5% Tol Learn More about Vishay Semiconductors vishay semi esmp package evolution	Datasheet	13,366In Stock	Cut Tape $0.69 $0.31 $0.273 $0.206 Reel $0.156 View $0.135 $0.125	Min.: 1 Mult.: 1 : 3,200
ESD Protection Diodes / TVS Diodes 24V 600W Bidir TransZorb 3.5% Tol SMBJ24CD-M3/H Vishay Semiconductors 1: $0.83 9,477In Stock	Mfr. Part No. SMBJ24CD-M3/H Mouser Part No 78-SMBJ24CD-M3/H	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 24V 600W Bidir TransZorb 3.5% Tol Learn More about Vishay Semiconductors vishay semi esmp package evolution	Datasheet	9,477In Stock	Cut Tape $0.83 $0.38 $0.335 $0.199 Reel $0.178 View $0.173 $0.169 MouseReel Available	Min.: 1 Mult.: 1 : 750
NTC (Negative Temperature Coefficient) Thermistors 10K OHM 10% DO-35 103JG1KE Littelfuse 1: $0.29 12,081In Stock	Mfr. Part No. 103JG1KE Mouser Part No 803-103JG1KE	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 10K OHM 10% DO-35 Learn More about Littelfuse do 35 standard	Datasheet	12,081In Stock	Cut Tape $0.29 $0.267 $0.235 $0.224 View Reel $0.145 $0.20 $0.172 $0.145	Min.: 1 Mult.: 1 : 5,000
Varistors 0402 39V 1.1 pF AVRL101A1R1NTB TDK 1: $0.85 18,513In Stock	Mfr. Part No. AVRL101A1R1NTB Mouser Part No 810-AVRL101A1R1NTB	TDK	Varistors 0402 39V 1.1 pF Learn More about TDK avr l varistors	Datasheet	18,513In Stock	Cut Tape $0.85 $0.543 $0.445 $0.426 Reel $0.354 View $0.41 $0.398 $0.38 $0.352 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Varistors 0805 40VDC 250pF 10% AEC-Q200 AVRM2012C560KT251M TDK 1: $0.27 31,735In Stock	Mfr. Part No. AVRM2012C560KT251M Mouser Part No 810-AVRM2012C560KT25	TDK	Varistors 0805 40VDC 250pF 10% AEC-Q200 Learn More about TDK AVR M varistors	Datasheet	31,735In Stock	Cut Tape $0.27 $0.166 $0.131 $0.124 Reel $0.107 View $0.118 $0.103 $0.099 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
NTC (Negative Temperature Coefficient) Thermistors AEC-Q200 10kOhm 3% B25/85:3400K+-2% NTCDS3HG103HC3NB TDK 1: $2.59 4,960In Stock	Mfr. Part No. NTCDS3HG103HC3NB Mouser Part No 810-NTCDS3HG103HC3NB	TDK	NTC (Negative Temperature Coefficient) Thermistors AEC-Q200 10kOhm 3% B25/85:3400K+-2% Learn More about TDK ntcd thermistors	Datasheet	4,960In Stock	$2.59 $2.47 $2.29 $2.18 View $1.92 $1.89 $1.76	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, NTC 10K OHM, 3%, 0201 NTCG063JH103HTB TDK 1: $0.60 20,517In Stock	Mfr. Part No. NTCG063JH103HTB Mouser Part No 810-NTCG063JH103HT1	TDK	NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, NTC 10K OHM, 3%, 0201 Learn More about TDK NTCG smd ntc thermistors	Datasheet	20,517In Stock	Cut Tape $0.60 $0.567 $0.53 $0.504 View Reel $0.342 $0.481 $0.425 $0.386 $0.342 $0.342 MouseReel Available	Min.: 1 Mult.: 1 : 15,000
Triacs Triacs 2N6349AG Littelfuse 1: $2.47 2,176In Stock	Mfr. Part No. 2N6349AG Mouser Part No 863-2N6349AG	Littelfuse	Triacs Triacs	Datasheet	2,176In Stock	Cut Tape $2.47 $1.70 $1.24 $1.12 Reel $1.12	Min.: 1 Mult.: 1 : 1,000
SCRs 600V 25A 2N6508G Littelfuse 1: $4.28 2,908In Stock	Mfr. Part No. 2N6508G Mouser Part No 863-2N6508G	Littelfuse	SCRs 600V 25A	Datasheet	2,908In Stock	$4.28 $2.22 $2.02 $1.96	Min.: 1 Mult.: 1

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Circuit Protection

Types of Circuit Protection