Wirewound Resistors – Mouser United Kingdom

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

W20 Wirewound Resistors

Welwyn / TT Electronics W20 Wirewound Resistors are CECC approved and offer high stability and reliability. Suitable for harsh environments, Welwyn / TT Electronics W20 Resistors have an impervious lead-free vitreous enamel coating. In addition, these resistors feature high-power dissipation for their size and overload characteristics ideal for protection circuits.

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

Results: 337

Applied Filters:

Resistance

Power Rating

Voltage Rating

Tolerance

Length

Width

Diameter

Maximum Operating Temperature

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.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 (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Resistance	Power Rating	Voltage Rating	Tolerance	Termination Style	Temperature Coefficient	Length	Diameter	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
Wirewound Resistors - Through Hole 0.5 ohm 5% 3W Wirewound Resistor W21-0R5JI Welwyn Components / TT Electronics 1: £1.73 371In Stock	Mfr. Part No. W21-0R5JI Mouser Part No 756-W21-0R5JI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 0.5 ohm 5% 3W Wirewound Resistor Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	371In Stock	£1.73 £1.09 £0.899 £0.818 View £0.684 £0.52 £0.491	Min.: 1 Mult.: 1	500 mOhms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 200 C	W20	Bulk
Wirewound Resistors - Through Hole 3Watt 150 ohm 5% W21-150RJI Welwyn Components / TT Electronics 1: £1.88 925In Stock	Mfr. Part No. W21-150RJI Mouser Part No 756-W21-150RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 3Watt 150 ohm 5% Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	925In Stock	£1.88 £1.25 £1.05 £0.986 Reel £0.482	Min.: 1 Mult.: 1 : 1,000	150 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 350 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 3Watt 15 ohm 5% W21-15RJI Welwyn Components / TT Electronics 1: £1.77 1,058In Stock	Mfr. Part No. W21-15RJI Mouser Part No 756-W21-15RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 3Watt 15 ohm 5% Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	1,058In Stock	£1.77 £1.32 £1.30 £0.648 Reel £0.472 £0.386	Min.: 1 Mult.: 1 : 1,000	15 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 350 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 18 ohm 5% 3W Vitreous Enamel W21-18RJI Welwyn Components / TT Electronics 1: £1.88 705In Stock	Mfr. Part No. W21-18RJI Mouser Part No 756-W21-18RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 18 ohm 5% 3W Vitreous Enamel Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	705In Stock	£1.88 £1.27 £1.05 £0.834 Reel £0.447 View £0.426 £0.419	Min.: 1 Mult.: 1 : 1,000	18 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 200 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 3Watt 1K ohm 5% W21-1K0JI Welwyn Components / TT Electronics 1: £1.37 1,036In Stock 4,000Expected 29/12/2026	Mfr. Part No. W21-1K0JI Mouser Part No 756-W21-1K0JI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 3Watt 1K ohm 5% Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	1,036In Stock 4,000Expected 29/12/2026	£1.37 £0.811 £0.722 £0.57 £0.493 Reel £0.42	Min.: 1 Mult.: 1 : 1,000	1 kOhms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 350 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 3Watt 1.5K ohm 5% W21-1K5JI Welwyn Components / TT Electronics 1: £1.98 808In Stock	Mfr. Part No. W21-1K5JI Mouser Part No 756-W21-1K5JI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 3Watt 1.5K ohm 5% Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	808In Stock	£1.98 £1.29 £1.03 £0.995 £0.882 Reel £0.594	Min.: 1 Mult.: 1 : 1,000	1.5 kOhms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 350 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 3Watt 1.0 ohm 5% W21-1R0JI Welwyn Components / TT Electronics 1: £1.18 1,540In Stock	Mfr. Part No. W21-1R0JI Mouser Part No 756-W21-1R0JI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 3Watt 1.0 ohm 5% Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	1,540In Stock	£1.18 £0.863 £0.796 £0.697 Reel £0.523 View £0.684 £0.482 £0.48	Min.: 1 Mult.: 1 : 1,000	1 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 350 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 1.8 ohm 5% 3W Vitreous Enamel W21-1R8JI Welwyn Components / TT Electronics 1: £1.88 605In Stock	Mfr. Part No. W21-1R8JI Mouser Part No 756-W21-1R8JI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 1.8 ohm 5% 3W Vitreous Enamel Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	605In Stock	£1.88 £1.27 £1.01 £1.00 £0.811 Reel £0.419	Min.: 1 Mult.: 1 : 1,000	1.8 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 200 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 1 ohm 5% 3W Wirewound Resistor W21-1RJI Welwyn Components / TT Electronics 1: £2.96 722In Stock	Mfr. Part No. W21-1RJI Mouser Part No 756-W21-1RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 1 ohm 5% 3W Wirewound Resistor Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	722In Stock	£2.96 £2.00 £1.58 £1.56 View £1.20 £0.579 £0.53 £0.509	Min.: 1 Mult.: 1	1 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 200 C	W20	Bulk
Wirewound Resistors - Through Hole 3Watt 220 ohm 5% W21-220RJI Welwyn Components / TT Electronics 1: £2.54 2,397In Stock	Mfr. Part No. W21-220RJI Mouser Part No 756-W21-220RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 3Watt 220 ohm 5% Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	2,397In Stock	£2.54 £1.67 £1.29 £1.28 Reel £0.526 View £1.14 £0.386	Min.: 1 Mult.: 1 : 1,000	220 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 350 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 3Watt 22 ohm 5% W21-22RJI Welwyn Components / TT Electronics 1: £1.55 789In Stock 3,000On Order	Mfr. Part No. W21-22RJI Mouser Part No 756-W21-22RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 3Watt 22 ohm 5% Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	789In Stock 3,000On Order On Order Ship Dates Mfr. No: W21-22RJI Stock: 789 Can Dispatch Immediately On Order: 1,000 Expected 26/01/2027 2,000 Expected 16/02/2027 Factory Lead Time: 25 Weeks	£1.55 £0.96 £0.712 £0.636 Reel £0.419 View £0.546 £0.387	Min.: 1 Mult.: 1 : 1,000	22 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 350 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 270 ohm 5% 3W Wirewound Resistor W21-270RJI Welwyn Components / TT Electronics 1: £2.04 378In Stock	Mfr. Part No. W21-270RJI Mouser Part No 756-W21-270RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 270 ohm 5% 3W Wirewound Resistor Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	378In Stock	£2.04 £1.45 £0.826 £0.818 Reel £0.423 View £0.46 £0.419	Min.: 1 Mult.: 1 : 1,000	270 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 200 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 27 ohm 5% 3W Wirewound Resistor W21-27RJI Welwyn Components / TT Electronics 1: £1.74 773In Stock	Mfr. Part No. W21-27RJI Mouser Part No 756-W21-27RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 27 ohm 5% 3W Wirewound Resistor Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	773In Stock	£1.74 £1.11 £0.908 £0.89 £0.759 Reel £0.417	Min.: 1 Mult.: 1 : 1,000	27 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 200 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 3Watt 2.2 ohm 5% W21-2R2JI Welwyn Components / TT Electronics 1: £1.88 654In Stock 1,000Expected 30/03/2027	Mfr. Part No. W21-2R2JI Mouser Part No 756-W21-2R2JI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 3Watt 2.2 ohm 5% Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	654In Stock 1,000Expected 30/03/2027	£1.88 £1.27 £1.10 £0.549 Reel £0.468 £0.387	Min.: 1 Mult.: 1 : 1,000	2.2 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 350 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 2.4 ohm 5% 3W Vitreous Enamel W21-2R4JI Welwyn Components / TT Electronics 1: £1.88 281In Stock	Mfr. Part No. W21-2R4JI Mouser Part No 756-W21-2R4JI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 2.4 ohm 5% 3W Vitreous Enamel Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	281In Stock	£1.88 £1.27 £1.10 £0.514 Reel £0.419	Min.: 1 Mult.: 1 : 1,000	2.4 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 200 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 2.7 ohm 5% 3W Wirewound Resistor W21-2R7JI Welwyn Components / TT Electronics 1: £1.53 1,498In Stock	Mfr. Part No. W21-2R7JI Mouser Part No 756-W21-2R7JI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 2.7 ohm 5% 3W Wirewound Resistor Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	1,498In Stock	£1.53 £0.952 £0.747 £0.705 £0.615 Reel £0.524	Min.: 1 Mult.: 1 : 1,000	2.7 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 200 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 300 ohm 5% 3W Wirewound Resistor W21-300RJI Welwyn Components / TT Electronics 1: £2.56 549In Stock	Mfr. Part No. W21-300RJI Mouser Part No 756-W21-300RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 300 ohm 5% 3W Wirewound Resistor Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	549In Stock	£2.56 £1.68 £1.37 £1.36 Reel £0.473 View £1.12 £0.417	Min.: 1 Mult.: 1 : 1,000	300 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 200 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 3Watt 330 ohm 5% W21-330RJI Welwyn Components / TT Electronics 1: £1.75 117In Stock 2,000Expected 02/03/2027	Mfr. Part No. W21-330RJI Mouser Part No 756-W21-330RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 3Watt 330 ohm 5% Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	117In Stock 2,000Expected 02/03/2027	£1.75 £1.13 £0.899 £0.882 Reel £0.419 View £0.545 £0.492 £0.387 £0.386	Min.: 1 Mult.: 1 : 1,000	330 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 350 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 3Watt 33 ohm 5% W21-33RJI Welwyn Components / TT Electronics 1: £2.17 951In Stock 1,000Expected 16/02/2027	Mfr. Part No. W21-33RJI Mouser Part No 756-W21-33RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 3Watt 33 ohm 5% Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	951In Stock 1,000Expected 16/02/2027	£2.17 £1.46 £1.25 £1.23 Reel £0.473 View £1.21 £0.386	Min.: 1 Mult.: 1 : 1,000	33 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 350 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 390 ohm 5% 3W Vitreous Enamel W21-390RJI Welwyn Components / TT Electronics 1: £1.88 507In Stock	Mfr. Part No. W21-390RJI Mouser Part No 756-W21-390RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 390 ohm 5% 3W Vitreous Enamel Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	507In Stock	£1.88 £1.27 £0.995 £0.986 £0.796 Reel £0.419	Min.: 1 Mult.: 1 : 1,000	390 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 200 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 3 ohm 5% 3W Wirewound Resistor W21-3RJI Welwyn Components / TT Electronics 1: £2.54 295In Stock	Mfr. Part No. W21-3RJI Mouser Part No 756-W21-3RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 3 ohm 5% 3W Wirewound Resistor Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	295In Stock	£2.54 £1.62 £1.32 £1.31 View £0.523 £0.444 £0.425	Min.: 1 Mult.: 1	3 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 200 C	W20	Bulk
Wirewound Resistors - Through Hole 43 ohm 5% 3W Vitreous Enamel W21-43RJI Welwyn Components / TT Electronics 1: £1.76 690In Stock	Mfr. Part No. W21-43RJI Mouser Part No 756-W21-43RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 43 ohm 5% 3W Vitreous Enamel Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	690In Stock	£1.76 £1.14 £0.856 £0.841 £0.788 Reel £0.419	Min.: 1 Mult.: 1 : 1,000	43 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 200 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 3Watt 470 ohm 5% W21-470RJI Welwyn Components / TT Electronics 1: £1.42 474In Stock 1,000Expected 17/11/2026	Mfr. Part No. W21-470RJI Mouser Part No 756-W21-470RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 3Watt 470 ohm 5% Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	474In Stock 1,000Expected 17/11/2026	£1.42 £0.856 £0.699 £0.562 Reel £0.423 View £0.518 £0.497 £0.387 £0.386	Min.: 1 Mult.: 1 : 1,000	470 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 350 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 3Watt 47 ohm 5% W21-47RJI Welwyn Components / TT Electronics 1: £1.88 1,004In Stock	Mfr. Part No. W21-47RJI Mouser Part No 756-W21-47RJI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 3Watt 47 ohm 5% Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	1,004In Stock	£1.88 £1.27 £0.849 £0.818 Reel £0.478 View £0.717 £0.387 £0.386	Min.: 1 Mult.: 1 : 1,000	47 Ohms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 350 C	W20	Ammo Pack
Wirewound Resistors - Through Hole 3Watt 4.7K ohm 5% W21-4K7JI Welwyn Components / TT Electronics 1: £2.58 143In Stock 4,000On Order	Mfr. Part No. W21-4K7JI Mouser Part No 756-W21-4K7JI	Welwyn Components / TT Electronics	Wirewound Resistors - Through Hole 3Watt 4.7K ohm 5% Learn More about Welwyn Components / TT Electronics welwyn w20 resistors	Datasheet	143In Stock 4,000On Order On Order Ship Dates Mfr. No: W21-4K7JI Stock: 143 Can Dispatch Immediately On Order: 1,000 Expected 04/02/2027 3,000 Expected 19/02/2027 Factory Lead Time: 23 Weeks	£2.58 £1.58 £1.24 £1.18 View Reel £0.615 £0.849 £0.759 £0.615	Min.: 1 Mult.: 1 : 1,000	4.7 kOhms	3 W	100 V	5 %	Axial	75 PPM / C	12.7 mm	5.6 mm	- 55 C	+ 350 C	W20	Ammo Pack