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RTO20 & RTO50 Power Resistors

Vishay / Sfernice RTO20 and RTO50 Power Resistors are thick film medium power resistors with energy ratings for harsh pulses up to 60J/0.1s. These power resistors provide high power for long precharge / discharge up to 150W at 45°C and high dielectric strength for protection up to 3000V_RMS. RTO20 resistors feature a high power dissipation-to-size ratio, a wide resistance range from 0.01Ω to 550kΩ, heat sink mounted, and negligible inductance. The RTO50 series features a high power-to-size ratio, ohmic value adjustment by sand trimming, led or surface mount versions, and non-inductive elements. Vishay / Sfernice RTO20 and RTO50 Power Resistors' applications include AMS, industrial, and automotive uses. The RTO 20W/50W are AEC-Q200 qualified.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Termination Style	Resistance	Power Rating	Tolerance	Temperature Coefficient	Case Code - in	Case Code - mm
Thick Film Resistors - Through Hole 20watts 0.05ohms 5% RTO020FR0500JTE3 Vishay / Sfernice 1: £14.69 44In Stock	Mfr. Part No. RTO020FR0500JTE3 Mouser Part No 72-RTO20F-R05-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 20watts 0.05ohms 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	44In Stock	£14.69 £10.14 £8.94 £8.16 View £7.71 £7.69 £7.59 Quote	Min.: 1 Mult.: 1	Radial	500 mOhms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole RTO 20 F 2K2 5% TU50 e3 RTO020F22000JTE3 Vishay / Sfernice 1: £10.21 60In Stock	Mfr. Part No. RTO020F22000JTE3 Mouser Part No 72-RTO020F22000JTE3	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 20 F 2K2 5% TU50 e3 Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	60In Stock	£10.21 £7.68 £7.67 £6.83 View £6.20 £5.74 £5.67 £5.57 Quote	Min.: 1 Mult.: 1	Radial	2.2 kOhms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole RTO 20 F 47U 10% TU50 e3 RTO020F47R00KTE3 Vishay / Sfernice 1: £11.13 23In Stock	Mfr. Part No. RTO020F47R00KTE3 Mouser Part No 72-RTO020F47R00KTE3	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 20 F 47U 10% TU50 e3 Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	23In Stock	£11.13 £7.68 £7.67 £6.80 View £6.18 £5.93 £5.91 £5.81 Quote	Min.: 1 Mult.: 1	Radial	47 Ohms	20 W	10 %	150 PPM / C
Thick Film Resistors - SMD RTO 50 C 10U 1% TU50 e1 RTO050C10R00FTE1 Vishay / Sfernice 1: £19.12 3In Stock	Mfr. Part No. RTO050C10R00FTE1 Mouser Part No 72-RTO050C10R00FTE1	Vishay / Sfernice	Thick Film Resistors - SMD RTO 50 C 10U 1% TU50 e1	Datasheet	3In Stock	£19.12 £13.50 £13.49 £12.25 View £11.39 £10.59 £10.48 £10.44 Quote	Min.: 1 Mult.: 1	SMD/SMT	10 Ohms	50 W	1 %	150 PPM / C	TO-220-2 Flat Lead	TO-220-2 Flat Lead
Thick Film Resistors - Through Hole RTO 50 F 4K3 5% TU50 e1 RTO050F43000JTE1 Vishay / Sfernice 1: £13.02 38In Stock	Mfr. Part No. RTO050F43000JTE1 Mouser Part No 72-RTO050F43000JTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 50 F 4K3 5% TU50 e1	Datasheet	38In Stock	£13.02 £8.98 £7.96 £7.23 View £6.83 £6.78 £6.70 Quote	Min.: 1 Mult.: 1	Radial	4.3 kOhms	50 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole RTO 50 F 47K 1% TU50 e1 RTO050F47001FTE1 Vishay / Sfernice 1: £18.20 45In Stock	Mfr. Part No. RTO050F47001FTE1 Mouser Part No 72-RTO050F47001FTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 50 F 47K 1% TU50 e1	Datasheet	45In Stock	£18.20 £12.84 £11.72 £10.85 View £10.06 £9.94 £9.89 Quote	Min.: 1 Mult.: 1	Radial	47 kOhms	50 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole RTO 20 F 6K8 1% TU50 e3 RTO020F68000FTE3 Vishay / Sfernice 1: £15.57 48In Stock	Mfr. Part No. RTO020F68000FTE3 Mouser Part No 72-RTO020F68000FTE3	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 20 F 6K8 1% TU50 e3 Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	48In Stock	£15.57 £10.99 £10.98 £10.21 View £9.27 £8.70 £8.61 Quote	Min.: 1 Mult.: 1	Radial	6.8 kOhms	20 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole RTO 20 F 6U2 2% TU50 e3 RTO020F6R200GTE3 Vishay / Sfernice 1: £15.57 37In Stock	Mfr. Part No. RTO020F6R200GTE3 Mouser Part No 72-RTO020F6R200GTE3	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 20 F 6U2 2% TU50 e3 Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	37In Stock	£15.57 £10.99 £10.98 £10.21 View £9.27 £9.14 £9.07 £9.01 Quote	Min.: 1 Mult.: 1	Radial	6.2 Ohms	20 W	2 %	150 PPM / C
Thick Film Resistors - Through Hole RTO 20 F U2 1% TU50 e3 RTO020FR2000FTE3 Vishay / Sfernice 1: £15.57 23In Stock	Mfr. Part No. RTO020FR2000FTE3 Mouser Part No 72-RTO020FR2000FTE3	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 20 F U2 1% TU50 e3 Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	23In Stock	£15.57 £10.99 £10.98 £10.21 View £9.27 £8.93 £8.83 Quote	Min.: 1 Mult.: 1	Radial	200 mOhms	20 W	1 %	250 PPM / C
Thick Film Resistors - Through Hole RTO 50 F 15U 1% TU50 e1 RTO050F15R00FTE1 Vishay / Sfernice 1: £18.20 20In Stock	Mfr. Part No. RTO050F15R00FTE1 Mouser Part No 72-RTO050F15R00FTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 50 F 15U 1% TU50 e1	Datasheet	20In Stock	£18.20 £12.85 £12.84 £11.72 View £10.85 £10.41 £10.28 £10.22 Quote	Min.: 1 Mult.: 1	Radial	15 Ohms	50 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole RTO 50 F 6U98 1% TU50 e1 RTO050F6R980FTE1 Vishay / Sfernice 1: £20.02 44In Stock	Mfr. Part No. RTO050F6R980FTE1 Mouser Part No 72-RTO050F6R980FTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 50 F 6U98 1% TU50 e1	Datasheet	44In Stock	£20.02 £14.13 £12.75 £11.93 View £11.07 £10.96 Quote	Min.: 1 Mult.: 1	Radial	6.98 Ohms	50 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole 20watts 4.7ohms 5% RTO020F4R700JTE3 Vishay / Sfernice 1: £5.38 138In Stock	Mfr. Part No. RTO020F4R700JTE3 Mouser Part No 72-RTO20F-4.7-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 20watts 4.7ohms 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	138In Stock	£5.38 £4.39	Min.: 1 Mult.: 1	Radial	4.7 Ohms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 20W .015ohms 1% RTO020FR0150FTE3 Vishay / Sfernice 1: £13.91 98In Stock	Mfr. Part No. RTO020FR0150FTE3 Mouser Part No 72-RTO020FR0150FTE3	Vishay / Sfernice	Thick Film Resistors - Through Hole 20W .015ohms 1% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	98In Stock	£13.91 £13.61 £13.39 £12.03 £10.94	Min.: 1 Mult.: 1	Radial	15 mOhms	20 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole 50W 1.5ohms 1% RTO050F1R500FTE1 Vishay / Sfernice 1: £11.32 156In Stock	Mfr. Part No. RTO050F1R500FTE1 Mouser Part No 72-RTO050F1R500FTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole 50W 1.5ohms 1% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	156In Stock	£11.32 £9.44 £9.43 £9.31 View £8.63 £8.47	Min.: 1 Mult.: 1	Radial	1.5 Ohms	50 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole RTO 20 F 16U 1% TU50 e3 RTO020F16R00FTE3 Vishay / Sfernice 1: £15.57 127In Stock	Mfr. Part No. RTO020F16R00FTE3 Mouser Part No 72-RTO020F16R00FTE3	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 20 F 16U 1% TU50 e3 Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	127In Stock	£15.57 £10.99 £10.98 £10.21 View £9.27 £8.93 £8.83 Quote	Min.: 1 Mult.: 1	Radial	16 Ohms	20 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole 20W 1ohm 1% RTO020F1R000FTE3 Vishay / Sfernice 1: £11.22 52In Stock	Mfr. Part No. RTO020F1R000FTE3 Mouser Part No 72-RTO020F1R000FTE3	Vishay / Sfernice	Thick Film Resistors - Through Hole 20W 1ohm 1% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	52In Stock	£11.22 £9.35 £8.91 £8.66 View £8.45 £8.21 £7.57 £7.43 Quote	Min.: 1 Mult.: 1	Radial	1 Ohms	20 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole 20W 2ohms 1% RTO020F2R000FTE3 Vishay / Sfernice 1: £10.77 24In Stock	Mfr. Part No. RTO020F2R000FTE3 Mouser Part No 72-RTO020F2R000FTE3	Vishay / Sfernice	Thick Film Resistors - Through Hole 20W 2ohms 1% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	24In Stock	£10.77 £10.47 £8.53 £8.28 View £8.08 £7.89 £7.68 £7.51 Quote	Min.: 1 Mult.: 1	Radial	2 Ohms	20 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole 20W 330ohms 1% RTO020F330R0FTE3 Vishay / Sfernice 1: £10.16 97In Stock	Mfr. Part No. RTO020F330R0FTE3 Mouser Part No 72-RTO020F330R0FTE3	Vishay / Sfernice	Thick Film Resistors - Through Hole 20W 330ohms 1% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	97In Stock	£10.16 £8.40 £8.39 £7.95 View £7.38 £7.26 £7.23	Min.: 1 Mult.: 1	Radial	330 Ohms	20 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole 50W 20Kohms 1% RTO050F20001FTE1 Vishay / Sfernice 1: £11.61 13In Stock	Mfr. Part No. RTO050F20001FTE1 Mouser Part No 72-RTO050F20001FTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole 50W 20Kohms 1% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	13In Stock	£11.61 £9.70 £9.56 £9.31 View £8.59 £8.47	Min.: 1 Mult.: 1	Radial	20 kOhms	50 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole 50W 8ohms 1% RTO050F8R000FTE1 Vishay / Sfernice 1: £13.05 42In Stock	Mfr. Part No. RTO050F8R000FTE1 Mouser Part No 72-RTO050F8R000FTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole 50W 8ohms 1% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	42In Stock	£13.05 £10.98 £10.51 £10.50 View £10.24 £9.79 £9.39 £9.34 Quote	Min.: 1 Mult.: 1	Radial	8 Ohms	50 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole 50W .15ohms 5% RTO050FR1500JTE1 Vishay / Sfernice 1: £8.23 68In Stock	Mfr. Part No. RTO050FR1500JTE1 Mouser Part No 72-RTO050FR1500JTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole 50W .15ohms 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	68In Stock	£8.23 £6.70 £6.35 £6.34 View £6.20 £5.81 £5.71 £5.64	Min.: 1 Mult.: 1	Radial	150 mOhms	50 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 50W .5ohms 1% RTO050FR5000FTE1 Vishay / Sfernice 1: £13.01 68In Stock	Mfr. Part No. RTO050FR5000FTE1 Mouser Part No 72-RTO050FR5000FTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole 50W .5ohms 1% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	68In Stock	£13.01 £10.95 £10.48 £10.47 View £10.24 £9.63 £9.31	Min.: 1 Mult.: 1	Radial	500 mOhms	50 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole 20W 200ohms 5% RTO020F200R0JTE3 Vishay / Sfernice 1: £7.28 57In Stock	Mfr. Part No. RTO020F200R0JTE3 Mouser Part No 72-RTO20F-200-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 20W 200ohms 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	57In Stock	£7.28 £5.87 £5.86 £5.45 £5.31	Min.: 1 Mult.: 1	Radial	200 Ohms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 50W 12ohm 5% RTO050F12R00JTE1 Vishay / Sfernice 1: £8.34 748In Stock 1,400On Order	Mfr. Part No. RTO050F12R00JTE1 Mouser Part No 72-RTO050F12R00JTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole 50W 12ohm 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	748In Stock 1,400On Order On Order Ship Dates Mfr. No: RTO050F12R00JTE1 Stock: 748 Can Dispatch Immediately On Order: 250 Pending 150 Expected 03/11/2026 1,000 Expected 12/11/2026 Factory Lead Time: 12 Weeks	£8.34 £6.77 £6.40 £5.98 View £5.84 £5.23 Quote	Min.: 1 Mult.: 1	Radial	12 Ohms	50 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 50W 22ohm 5% RTO050F22R00JTE1 Vishay / Sfernice 1: £9.19 762In Stock	Mfr. Part No. RTO050F22R00JTE1 Mouser Part No 72-RTO050F22R00JTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole 50W 22ohm 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	762In Stock	£9.19 £7.09 £6.92 £6.07 View £5.74 £5.44 £5.18 Quote	Min.: 1 Mult.: 1	Radial	22 Ohms	50 W	5 %	150 PPM / C

RTO20 & RTO50 Power Resistors

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4.32 mOhms
10 mOhms
15 mOhms
20 mOhms
25 mOhms
33 mOhms
40 mOhms
46 mOhms
50 mOhms
62 mOhms
68 mOhms
91 mOhms
95 mOhms
100 mOhms
120 mOhms
150 mOhms
180 mOhms
200 mOhms
220 mOhms
270 mOhms