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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.
Connectorised Surge Protectors Din Rail Ethernet Surge Suppressor, Cat 5E MJ8-CAT5E Citel 1: $85.67 70In Stock	Mfr. Part No. MJ8-CAT5E Mouser Part No 703-MJ8-CAT5E	Citel	Connectorised Surge Protectors Din Rail Ethernet Surge Suppressor, Cat 5E Learn More about Citel mj8 ethernet	Datasheet	70In Stock	$85.67 $77.52 $77.47 $77.09 View $64.75 Quote	Min.: 1 Mult.: 1
PTC (Positive Temperature Coefficient) Thermistors PTC 2.2Kohms 1% Linear Vishay / Dale TFPT0805L2201FM TFPT0805L2201FM Vishay / Dale 1: $0.89 4,454In Stock	Mfr. Part No. TFPT0805L2201FM Mouser Part No 71-TFPT0805L2201FM	Vishay / Dale	PTC (Positive Temperature Coefficient) Thermistors PTC 2.2Kohms 1% Linear Learn More about Vishay / Dale vishay dale tfpt thermistors	Datasheet	4,454In Stock	Cut Tape $0.89 $0.843 $0.761 $0.716 View Reel $0.53 $0.698 $0.587 $0.546 $0.53 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
PTC (Positive Temperature Coefficient) Thermistors PTC 5.6Kohms 1% Linear Vishay / Dale TFPT1206L5601FV TFPT1206L5601FV Vishay / Dale 1: $1.95 4,051In Stock	Mfr. Part No. TFPT1206L5601FV Mouser Part No 71-TFPT1206L5601FV	Vishay / Dale	PTC (Positive Temperature Coefficient) Thermistors PTC 5.6Kohms 1% Linear Learn More about Vishay / Dale vishay dale tfpt thermistors	Datasheet	4,051In Stock	Cut Tape $1.95 $1.46 $1.17 $1.10 Reel $0.829 View $1.08 $0.901 $0.665 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
ESD Protection Diodes / TVS Diodes RASMID™ Series - Transient Voltage Suppressor VS5V0BB1FST27N ROHM Semiconductor 1: $0.46 52,391In Stock	Mfr. Part No. VS5V0BB1FST27N Mouser Part No 755-VS5V0BB1FST27N	ROHM Semiconductor	ESD Protection Diodes / TVS Diodes RASMID™ Series - Transient Voltage Suppressor Learn More about ROHM Semiconductor rohm vs5v tvs	Datasheet	52,391In Stock	Cut Tape $0.46 $0.238 $0.152 $0.13 View Reel $0.068 $0.116 $0.101 $0.096 $0.085 $0.068 MouseReel Available	Min.: 1 Mult.: 1 : 27,000
ESD Protection Diodes / TVS Diodes 3KW, 26V 5%,BIDIR,SMC TVS Vishay Semiconductors SMC3K26CAHM3_A/H SMC3K26CAHM3_A/H Vishay Semiconductors 1: $2.53 8,466In Stock	Mfr. Part No. SMC3K26CAHM3_A/H Mouser Part No 78-SMC3K26CAHM3_A/H	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 3KW, 26V 5%,BIDIR,SMC TVS Learn More about Vishay Semiconductors vishay semi esmp package evolution	Datasheet	8,466In Stock	Cut Tape $2.53 $1.65 $1.26 $1.07 $0.829 Reel $0.665 MouseReel Available	Min.: 1 Mult.: 1 : 850
ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SMF DO219-M3 SMF6V5A-M3-08 Vishay Semiconductors 1: $0.54 40,790In Stock	Mfr. Part No. SMF6V5A-M3-08 Mouser Part No 78-SMF6V5A-M3-08	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SMF DO219-M3 Learn More about Vishay Semiconductors vishay smf series diodes	Datasheet	40,790In Stock	Cut Tape $0.54 $0.257 $0.214 $0.16 Reel $0.117 View $0.145 $0.116 $0.101 $0.085 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
SCRs Thyristors - TO48 BRAZ SQR-e3 VS-25RIA120M Vishay Semiconductors 1: $24.31 188In Stock	Mfr. Part No. VS-25RIA120M Mouser Part No 78-VS-25RIA120M	Vishay Semiconductors	SCRs Thyristors - TO48 BRAZ SQR-e3	Datasheet	188In Stock	$24.31 $17.56 $15.60 $15.59	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 7KW 24V 5% XMC7K24CAHM3/H Vishay Semiconductors 1: $3.06 1,892In Stock	Mfr. Part No. XMC7K24CAHM3/H Mouser Part No 78-XMC7K24CAHM3/H	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 7KW 24V 5% Learn More about Vishay Semiconductors vishay semi esmp package evolution	Datasheet	1,892In Stock	Cut Tape $3.06 $1.99 $1.52 $1.37 Reel $0.915 View $0.985 $0.849 $0.848 $0.843 MouseReel Available	Min.: 1 Mult.: 1 : 850
PTC (Positive Temperature Coefficient) Thermistors 15 OHM 20% SMD 0805 PRG21BB150MB1RK Murata Electronics 1: $0.57 9,044In Stock	Mfr. Part No. PRG21BB150MB1RK Mouser Part No 81-PRG21BB150MB1RK	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 15 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	9,044In Stock	Cut Tape $0.57 $0.52 $0.432 $0.418 View Reel $0.259 $0.395 $0.358 $0.34 $0.319 $0.259 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Varistors 0402 20VDC 3.3pF AEC-Q200 AVRL101D3R3FTA TDK 1: $0.11 108,193In Stock	Mfr. Part No. AVRL101D3R3FTA Mouser Part No 810-AVRL101D3R3FTA	TDK	Varistors 0402 20VDC 3.3pF AEC-Q200 Learn More about TDK avr l varistors	Datasheet	108,193In Stock	Cut Tape $0.11 $0.067 $0.051 $0.048 Reel $0.038 View $0.046 $0.043 $0.042 $0.036 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
SCRs 400 Volt 25 Amp Vishay Semiconductors VS-25RIA40 VS-25RIA40 Vishay Semiconductors 1: $17.60 150In Stock	Mfr. Part No. VS-25RIA40 Mouser Part No 844-25RIA40	Vishay Semiconductors	SCRs 400 Volt 25 Amp	Datasheet	150In Stock	$17.60 $12.86	Min.: 1 Mult.: 1
SCRs 400V 25A 2N6507TG Littelfuse 1: $4.38 876In Stock	Mfr. Part No. 2N6507TG Mouser Part No 863-2N6507TG	Littelfuse	SCRs 400V 25A	Datasheet	876In Stock	Cut Tape $4.38 $2.89 $2.07 $2.03 Reel $2.03	Min.: 1 Mult.: 1 : 1,000
Triacs 8A 50mA 800V IGT 3 QUAD INTERNL ISLTD BTA08-800BW3G Littelfuse 1: $3.97 1,070In Stock	Mfr. Part No. BTA08-800BW3G Mouser Part No 863-BTA08-800BW3G	Littelfuse	Triacs 8A 50mA 800V IGT 3 QUAD INTERNL ISLTD	Datasheet	1,070In Stock	$3.97 $2.05 $1.86 $1.78	Min.: 1 Mult.: 1
Triacs 16A 35mA 600V IGT 3 QUAD INTERNL ISLTD BTA16-600CW3G Littelfuse 1: $5.10 1,544In Stock	Mfr. Part No. BTA16-600CW3G Mouser Part No 863-BTA16-600CW3G	Littelfuse	Triacs 16A 35mA 600V IGT 3 QUAD INTERNL ISLTD	Datasheet	1,544In Stock	$5.10 $2.68 $2.48	Min.: 1 Mult.: 1
Inrush Current Limiters NTC THERMISTOR ICL P11/47 B57211P0470M301 TDK 1: $1.03 3,305In Stock	Mfr. Part No. B57211P0470M301 Mouser Part No 871-B57211P470M301	TDK	Inrush Current Limiters NTC THERMISTOR ICL P11/47 Learn More about TDK epcosp11p13icl	Datasheet	3,305In Stock	$1.03 $0.947 $0.786 $0.725 View $0.652 $0.601 $0.582 $0.51 $0.447	Min.: 1 Mult.: 1
Inrush Current Limiters S 235/10 M51 B57235S0100M051 TDK 1: $0.84 5,755In Stock	Mfr. Part No. B57235S0100M051 Mouser Part No 871-B57235S0100M051	TDK	Inrush Current Limiters S 235/10 M51 Learn More about TDK epcos inrush current limiters	Datasheet	5,755In Stock	Cut Tape $0.84 $0.77 $0.652 $0.596 Reel $0.387 View $0.536 $0.494 $0.435 $0.354	Min.: 1 Mult.: 1 : 3,000
Inrush Current Limiters S 236/20 M51 B57236S0200M051 TDK 1: $1.09 3,674In Stock	Mfr. Part No. B57236S0200M051 Mouser Part No 871-B57236S0200M051	TDK	Inrush Current Limiters S 236/20 M51 Learn More about TDK epcos inrush current limiters	Datasheet	3,674In Stock	Cut Tape $1.09 $1.01 $0.832 $0.768 Reel $0.484 View $0.69 $0.636 $0.54 $0.464	Min.: 1 Mult.: 1 : 3,000
Inrush Current Limiters S 236/25 M51 B57236S0250M051 TDK 1: $1.09 5,748In Stock	Mfr. Part No. B57236S0250M051 Mouser Part No 871-B57236S0250M051	TDK	Inrush Current Limiters S 236/25 M51 Learn More about TDK epcos inrush current limiters	Datasheet	5,748In Stock	Cut Tape $1.09 $1.01 $0.832 $0.593 Reel $0.484 View $0.545 $0.508 $0.496 $0.464	Min.: 1 Mult.: 1 : 3,000
NTC (Negative Temperature Coefficient) Thermistors 0603 10K 3% B 4000 55/125/56 B57321V2103H60 TDK 1: $0.41 63,709In Stock	Mfr. Part No. B57321V2103H60 Mouser Part No 871-B57321V2103H60	TDK	NTC (Negative Temperature Coefficient) Thermistors 0603 10K 3% B 4000 55/125/56 Learn More about TDK b573xv2 ntc thermistors	Datasheet	63,709In Stock	Cut Tape $0.41 $0.351 $0.309 $0.248 Reel $0.143 View $0.205 $0.146 $0.14 $0.125 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Inrush Current Limiters 10 Ohms 7.5amsp 3300k B57364S0100M054 TDK 1: $3.94 1,380In Stock	Mfr. Part No. B57364S0100M054 Mouser Part No 871-B57364S100M54	TDK	Inrush Current Limiters 10 Ohms 7.5amsp 3300k Learn More about TDK epcos inrush current limiters	Datasheet	1,380In Stock	$3.94 $3.27 $3.02 $2.51 View Reel $1.64 $2.31 $2.08 $1.82 $1.64 $1.64	Min.: 1 Mult.: 1 : 1,500
NTC (Negative Temperature Coefficient) Thermistors 0603 100K 5% B-4480 NTC B57371V2104J060 TDK 1: $0.28 26,145In Stock	Mfr. Part No. B57371V2104J060 Mouser Part No 871-B57371V2104J060	TDK	NTC (Negative Temperature Coefficient) Thermistors 0603 100K 5% B-4480 NTC Learn More about TDK b573xv2 ntc thermistors	Datasheet	26,145In Stock	Cut Tape $0.28 $0.256 $0.226 $0.214 Reel $0.154 View $0.192 $0.162 $0.149 $0.145 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
NTC (Negative Temperature Coefficient) Thermistors 3k 3988 B57863S0302F040 TDK 1: $2.95 3,559In Stock	Mfr. Part No. B57863S0302F040 Mouser Part No 871-B57863S302F40	TDK	NTC (Negative Temperature Coefficient) Thermistors 3k 3988 Learn More about TDK epcos ntc thermistors	Datasheet	3,559In Stock	$2.95 $2.82 $2.66 $2.55 View $2.45 $2.22 $2.10 $1.82	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors 6.8k 3980 3% B57891M0682J000 TDK 1: $0.77 7,708In Stock	Mfr. Part No. B57891M0682J000 Mouser Part No 871-B57891M682J	TDK	NTC (Negative Temperature Coefficient) Thermistors 6.8k 3980 3% Learn More about TDK epcos temperature sensor systems	Datasheet	7,708In Stock	$0.77 $0.73 $0.684 $0.652 View $0.623 $0.564 $0.542 $0.498	Min.: 1 Mult.: 1
Varistors 20VAC 10% 5mm StandarD B72205S0200K101 TDK 1: $0.32 13,835In Stock	Mfr. Part No. B72205S0200K101 Mouser Part No 871-B72205S200K101	TDK	Varistors 20VAC 10% 5mm StandarD Learn More about TDK epcosvaristors	Datasheet	13,835In Stock	$0.32 $0.194 $0.153 $0.146 View $0.139 $0.132 $0.128 $0.127	Min.: 1 Mult.: 1
Varistors 130VAC 10% 7mm StandarD B72207S0131K211 TDK 1: $0.34 32,213In Stock	Mfr. Part No. B72207S0131K211 Mouser Part No 871-B72207S0131K211	TDK	Varistors 130VAC 10% 7mm StandarD Learn More about TDK epcosvaristors	Datasheet	32,213In Stock	Cut Tape $0.34 $0.207 $0.164 $0.156 Reel $0.135 View $0.146 $0.141 $0.132 $0.113	Min.: 1 Mult.: 1 : 4,500

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Circuit Protection

Types of Circuit Protection