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4 mm 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.
PTC (Positive Temperature Coefficient) Thermistors 990-A 120-A 51 3X1 PTC Thermistor B59990C0120A051 TDK 1: $0.96 3,734In Stock	Mfr. Part No. B59990C0120A051 Mouser Part No 871-B59990C0120A051	TDK	PTC (Positive Temperature Coefficient) Thermistors 990-A 120-A 51 3X1 PTC Thermistor Learn More about TDK epcos ptc thermistors	Datasheet	3,734In Stock	Cut Tape $0.96 $0.878 $0.739 $0.695 View Reel $0.445 $0.672 $0.604 $0.557 $0.489 $0.445	Min.: 1 Mult.: 1 : 3,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 04x4.2mm, 800V 2087-80-SM-RPLF Bourns 1: $0.76 3,960In Stock	Mfr. Part No. 2087-80-SM-RPLF Mouser Part No 652-2087-80-SM-RPLF	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 04x4.2mm, 800V Learn More about Bourns hv2eGDT	Datasheet	3,960In Stock	Cut Tape $0.76 $0.73 $0.631 $0.594 Reel $0.441 View $0.55 $0.494 $0.467 $0.423 MouseReel Available	Min.: 1 Mult.: 1 : 2,700
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 350volts SMT GDT 4X4.2mm DIA 2053-35-SM-RPLF Bourns 1: $0.74 4,300In Stock	Mfr. Part No. 2053-35-SM-RPLF Mouser Part No 652-2053-35-SM-RPLF	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 350volts SMT GDT 4X4.2mm DIA Learn More about Bourns ld2eGDT	Datasheet	4,300In Stock	Cut Tape $0.74 $0.681 $0.565 $0.521 View Reel $0.32 $0.469 $0.404 $0.361 $0.32 MouseReel Available	Min.: 1 Mult.: 1 : 2,700
PTC (Positive Temperature Coefficient) Thermistors PTC 80Deg C Temp PTCSL03T081DB1E Vishay / BC Components 1: $0.73 2,572In Stock	Mfr. Part No. PTCSL03T081DB1E Mouser Part No 594-PTCSL03T081DB1E	Vishay / BC Components	PTC (Positive Temperature Coefficient) Thermistors PTC 80Deg C Temp Learn More about Vishay / BC Components vishay ptcsl03	Datasheet	2,572In Stock	$0.73 $0.686 $0.628 $0.59 View $0.576 $0.483 $0.43 $0.409	Min.: 1 Mult.: 1
PTC (Positive Temperature Coefficient) Thermistors 890A 120A 51 3X2.5 PTC Thermistor B59890C0120A051 TDK 1: $1.31 2,755In Stock	Mfr. Part No. B59890C0120A051 Mouser Part No 871-B59890C0120A051	TDK	PTC (Positive Temperature Coefficient) Thermistors 890A 120A 51 3X2.5 PTC Thermistor Learn More about TDK epcos ptc thermistors	Datasheet	2,755In Stock	Cut Tape $1.31 $1.21 $0.982 $0.923 View Reel $0.583 $0.901 $0.83 $0.757 $0.634 $0.583	Min.: 1 Mult.: 1 : 3,000
NTC (Negative Temperature Coefficient) Thermistors Single ended, Epoxy NTC, 10K ohm, 3380 B NRL3104F3380B1F Eaton Electronics 1: $0.92 1,503In Stock 2,000Expected 18/01/2027	Mfr. Part No. NRL3104F3380B1F Mouser Part No 504-NRL3104F3380B1F	Eaton Electronics	NTC (Negative Temperature Coefficient) Thermistors Single ended, Epoxy NTC, 10K ohm, 3380 B Learn More about Eaton Electronics eaton nrl ntc thermistors	Datasheet	1,503In Stock 2,000Expected 18/01/2027	$0.92 $0.868 $0.71 $0.668 View $0.658 $0.651 $0.553 $0.541 $0.49	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors Single ended, Epoxy NTC, 50K ohm, 3950 B NRL3504F3950B1F Eaton Electronics 1: $0.64 1,965In Stock	Mfr. Part No. NRL3504F3950B1F Mouser Part No 504-NRL3504F3950B1F	Eaton Electronics	NTC (Negative Temperature Coefficient) Thermistors Single ended, Epoxy NTC, 50K ohm, 3950 B Learn More about Eaton Electronics eaton nrl ntc thermistors	Datasheet	1,965In Stock	$0.64 $0.603 $0.564 $0.537 View $0.536 $0.469 $0.449 $0.439	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC Thermistor M 703/10 B57703M103G TDK 1: $3.34 3,544In Stock 3,500Expected 13/01/2027	Mfr. Part No. B57703M103G Mouser Part No 871-B57703M103G	TDK	NTC (Negative Temperature Coefficient) Thermistors NTC Thermistor M 703/10 Learn More about TDK epcos ntc thermistors	Datasheet	3,544In Stock 3,500Expected 13/01/2027	$3.34 $3.08 $2.82 $2.69 View $2.61 $2.51 $2.44	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors 1703/100K/A1 3% E&E NTC Thermistor B57703M1104A002 TDK 1: $7.68 2,081In Stock	Mfr. Part No. B57703M1104A002 Mouser Part No 871-B57703M1104A002	TDK	NTC (Negative Temperature Coefficient) Thermistors 1703/100K/A1 3% E&E NTC Thermistor Learn More about TDK epcos ntc thermistors	Datasheet	2,081In Stock	$7.68 $6.93 $6.65 $6.31 View $6.08 $5.68 $5.67 $5.39 $5.28	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 75volts SMT GDT 4X4.2mm DIA 2053-07-SM-RPLF Bourns 1: $0.74 20,426In Stock	Mfr. Part No. 2053-07-SM-RPLF Mouser Part No 652-2053-07-SM-RPLF	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 75volts SMT GDT 4X4.2mm DIA Learn More about Bourns ld2eGDT	Datasheet	20,426In Stock	Cut Tape $0.74 $0.681 $0.565 $0.521 View Reel $0.348 $0.469 $0.404 $0.372 $0.348 MouseReel Available	Min.: 1 Mult.: 1 : 2,700
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90volts SMT GDT 4X4.2mm DIA 2053-09-SM-RPLF Bourns 1: $0.96 5,155In Stock	Mfr. Part No. 2053-09-SM-RPLF Mouser Part No 652-2053-09-SM-RPLF	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90volts SMT GDT 4X4.2mm DIA Learn More about Bourns ld2eGDT	Datasheet	5,155In Stock	Cut Tape $0.96 $0.84 $0.732 $0.675 View Reel $0.462 $0.607 $0.523 $0.482 $0.462 MouseReel Available	Min.: 1 Mult.: 1 : 2,700
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 230volts SMT GDT 4X4.2mm DIA 2053-23-SM-RPLF Bourns 1: $0.74 8,673In Stock	Mfr. Part No. 2053-23-SM-RPLF Mouser Part No 652-2053-23-SM-RPLF	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 230volts SMT GDT 4X4.2mm DIA Learn More about Bourns ld2eGDT	Datasheet	8,673In Stock	Cut Tape $0.74 $0.681 $0.565 $0.521 View Reel $0.348 $0.469 $0.404 $0.372 $0.348 MouseReel Available	Min.: 1 Mult.: 1 : 2,700
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 470volts SMT GDT 4X4.2mm DIA 2053-47-SM-RPLF Bourns 1: $0.74 6,147In Stock	Mfr. Part No. 2053-47-SM-RPLF Mouser Part No 652-2053-47-SM-RPLF	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 470volts SMT GDT 4X4.2mm DIA Learn More about Bourns ld2eGDT	Datasheet	6,147In Stock	Cut Tape $0.74 $0.681 $0.565 $0.521 View Reel $0.348 $0.469 $0.404 $0.372 $0.348 MouseReel Available	Min.: 1 Mult.: 1 : 2,700
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 04x 4.2mm, 1000V 2087-100-SM-RPLF Bourns 1: $0.98 6,530In Stock	Mfr. Part No. 2087-100-SM-RPLF Mouser Part No 652-2087-100-SM-RPLF	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 04x 4.2mm, 1000V Learn More about Bourns hv2eGDT	Datasheet	6,530In Stock	Cut Tape $0.98 $0.902 $0.748 $0.691 Reel $0.492 View $0.621 $0.534 $0.492 $0.473 MouseReel Available	Min.: 1 Mult.: 1 : 2,700
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 04x 4.2mm, 2000V 2087-200-SM-RPLF Bourns 1: $0.98 3,127In Stock	Mfr. Part No. 2087-200-SM-RPLF Mouser Part No 652-2087-200-SM-RPLF	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 04x 4.2mm, 2000V Learn More about Bourns hv2eGDT	Datasheet	3,127In Stock	Cut Tape $0.98 $0.902 $0.748 $0.691 Reel $0.499 View $0.621 $0.572 $0.528 $0.473 MouseReel Available	Min.: 1 Mult.: 1 : 2,700
PTC (Positive Temperature Coefficient) Thermistors PTC 80Deg C Temp Vishay / BC Components PTCSL03T081DT1E PTCSL03T081DT1E Vishay / BC Components 1: $0.77 2,021In Stock	Mfr. Part No. PTCSL03T081DT1E Mouser Part No 594-PTCSL03T081DT1E	Vishay / BC Components	PTC (Positive Temperature Coefficient) Thermistors PTC 80Deg C Temp Learn More about Vishay / BC Components vishay ptcsl03	Datasheet	2,021In Stock	Cut Tape $0.77 $0.725 $0.665 $0.629 View Reel $0.517 $0.608 $0.529 $0.517 $0.517	Min.: 1 Mult.: 1 : 2,000
PTC (Positive Temperature Coefficient) Thermistors PTC 100Deg C Temp Vishay / BC Components PTCSL03T101DB1E PTCSL03T101DB1E Vishay / BC Components 1: $0.87 244In Stock	Mfr. Part No. PTCSL03T101DB1E Mouser Part No 594-PTCSL03T101DB1E	Vishay / BC Components	PTC (Positive Temperature Coefficient) Thermistors PTC 100Deg C Temp Learn More about Vishay / BC Components vishay ptcsl03	Datasheet	244In Stock	$0.87 $0.785 $0.655 $0.624 View $0.595 $0.584 $0.518 $0.456 $0.451	Min.: 1 Mult.: 1
PTC (Positive Temperature Coefficient) Thermistors PTC 100Deg C Temp Vishay / BC Components PTCSL03T101DT1E PTCSL03T101DT1E Vishay / BC Components 1: $0.77 1,798In Stock	Mfr. Part No. PTCSL03T101DT1E Mouser Part No 594-PTCSL03T101DT1E	Vishay / BC Components	PTC (Positive Temperature Coefficient) Thermistors PTC 100Deg C Temp Learn More about Vishay / BC Components vishay ptcsl03	Datasheet	1,798In Stock	Cut Tape $0.77 $0.725 $0.665 $0.629 View Reel $0.475 $0.608 $0.529 $0.502 $0.475	Min.: 1 Mult.: 1 : 2,000
PTC (Positive Temperature Coefficient) Thermistors PTC 110Deg C Temp Vishay / BC Components PTCSL03T111DB1E PTCSL03T111DB1E Vishay / BC Components 1: $1.05 475In Stock	Mfr. Part No. PTCSL03T111DB1E Mouser Part No 594-PTCSL03T111DB1E	Vishay / BC Components	PTC (Positive Temperature Coefficient) Thermistors PTC 110Deg C Temp Learn More about Vishay / BC Components vishay ptcsl03	Datasheet	475In Stock	$1.05 $0.785 $0.628 $0.59 View $0.576 $0.483	Min.: 1 Mult.: 1
PTC (Positive Temperature Coefficient) Thermistors PTC 110Deg C Temp Vishay / BC Components PTCSL03T111DT1E PTCSL03T111DT1E Vishay / BC Components 1: $0.77 1,497In Stock 2,000Expected 15/02/2027	Mfr. Part No. PTCSL03T111DT1E Mouser Part No 594-PTCSL03T111DT1E	Vishay / BC Components	PTC (Positive Temperature Coefficient) Thermistors PTC 110Deg C Temp Learn More about Vishay / BC Components vishay ptcsl03	Datasheet	1,497In Stock 2,000Expected 15/02/2027	Cut Tape $0.77 $0.725 $0.655 $0.616 View Reel $0.434 $0.60 $0.505 $0.475 $0.434	Min.: 1 Mult.: 1 : 2,000
PTC (Positive Temperature Coefficient) Thermistors PTC 130Deg C Temp Vishay / BC Components PTCSL03T131DB1E PTCSL03T131DB1E Vishay / BC Components 1: $0.73 959In Stock	Mfr. Part No. PTCSL03T131DB1E Mouser Part No 594-PTCSL03T131DB1E	Vishay / BC Components	PTC (Positive Temperature Coefficient) Thermistors PTC 130Deg C Temp Learn More about Vishay / BC Components vishay ptcsl03	Datasheet	959In Stock	$0.73 $0.686 $0.628 $0.60 View $0.576 $0.539 $0.507 $0.465	Min.: 1 Mult.: 1
PTC (Positive Temperature Coefficient) Thermistors PTC 130Deg C Temp Vishay / BC Components PTCSL03T131DT1E PTCSL03T131DT1E Vishay / BC Components 1: $0.77 2,766In Stock	Mfr. Part No. PTCSL03T131DT1E Mouser Part No 594-PTCSL03T131DT1E	Vishay / BC Components	PTC (Positive Temperature Coefficient) Thermistors PTC 130Deg C Temp Learn More about Vishay / BC Components vishay ptcsl03	Datasheet	2,766In Stock	Cut Tape $0.77 $0.725 $0.665 $0.629 View Reel $0.47 $0.608 $0.529 $0.502 $0.47	Min.: 1 Mult.: 1 : 2,000
PTC (Positive Temperature Coefficient) Thermistors PTC 140Deg C Temp Vishay / BC Components PTCSL03T141DB1E PTCSL03T141DB1E Vishay / BC Components 1: $1.59 1,005In Stock	Mfr. Part No. PTCSL03T141DB1E Mouser Part No 594-PTCSL03T141DB1E	Vishay / BC Components	PTC (Positive Temperature Coefficient) Thermistors PTC 140Deg C Temp Learn More about Vishay / BC Components vishay ptcsl03	Datasheet	1,005In Stock	$1.59 $1.30 $1.11 $1.07 View $1.05 $0.942 $0.518 $0.488	Min.: 1 Mult.: 1
PTC (Positive Temperature Coefficient) Thermistors PTC 150Deg C Temp Vishay / BC Components PTCSL03T151DB1E PTCSL03T151DB1E Vishay / BC Components 1: $0.73 1,734In Stock	Mfr. Part No. PTCSL03T151DB1E Mouser Part No 594-PTCSL03T151DB1E	Vishay / BC Components	PTC (Positive Temperature Coefficient) Thermistors PTC 150Deg C Temp Learn More about Vishay / BC Components vishay ptcsl03	Datasheet	1,734In Stock	$0.73 $0.686 $0.628 $0.60 View $0.576 $0.507 $0.465	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 145volts SMT GDT 4X4.2mm DIA 2053-14-SM-RPLF Bourns 1: $0.74 164In Stock 2,700Expected 11/03/2027	Mfr. Part No. 2053-14-SM-RPLF Mouser Part No 652-2053-14-SM-RPLF	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 145volts SMT GDT 4X4.2mm DIA Learn More about Bourns ld2eGDT	Datasheet	164In Stock 2,700Expected 11/03/2027	Cut Tape $0.74 $0.681 $0.651 $0.54 View Reel $0.348 $0.469 $0.404 $0.372 $0.348 MouseReel Available	Min.: 1 Mult.: 1 : 2,700

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4 mm Circuit Protection

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