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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
Thick Film Resistors - Through Hole 20watts 10Kohms 5% RTO020F10001JTE3 Vishay / Sfernice 1: £7.39 138In Stock	Mfr. Part No. RTO020F10001JTE3 Mouser Part No 72-RTO20F-10K-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 20watts 10Kohms 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	138In Stock	£7.39 £5.96 £5.63 £5.62 View £5.12 £5.04 £4.97	Min.: 1 Mult.: 1	Radial	10 kOhms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 20watts 22ohms 5% NON-STANDARD RTO020F22R00JTE3 Vishay / Sfernice 1: £6.28 142In Stock	Mfr. Part No. RTO020F22R00JTE3 Mouser Part No 72-RTO20F-22-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 20watts 22ohms 5% NON-STANDARD Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	142In Stock	£6.28 £5.83 £5.31	Min.: 1 Mult.: 1	Radial	22 Ohms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 20watts 3.9ohms 5% NON-STANDARD RTO020F3R900JTE3 Vishay / Sfernice 1: £7.48 25In Stock	Mfr. Part No. RTO020F3R900JTE3 Mouser Part No 72-RTO20F-3.9-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 20watts 3.9ohms 5% NON-STANDARD Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	25In Stock	£7.48 £6.01 £5.83 £5.32 £5.31	Min.: 1 Mult.: 1	Radial	3.9 Ohms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 20watts 330ohms 5% NON-STANDARD RTO020F330R0JTE3 Vishay / Sfernice 1: £7.22 29In Stock 250Expected 07/01/2027	Mfr. Part No. RTO020F330R0JTE3 Mouser Part No 72-RTO20F-330-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 20watts 330ohms 5% NON-STANDARD Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	29In Stock 250Expected 07/01/2027	£7.22 £6.96 £6.58 £5.64 View £5.62 £5.39 £4.98 £4.92 Quote	Min.: 1 Mult.: 1	Radial	330 Ohms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 20watts 500Kohms 5% RTO020F50002JTE3 Vishay / Sfernice 1: £8.08 63In Stock	Mfr. Part No. RTO020F50002JTE3 Mouser Part No 72-RTO20F-500K-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 20watts 500Kohms 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	63In Stock	£8.08 £7.87 £7.48 £7.21 View £5.84 £5.83	Min.: 1 Mult.: 1	Radial	500 kOhms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 20watts 680ohms 5% NON-STANDARD RTO020F680R0JTE3 Vishay / Sfernice 1: £6.47 94In Stock	Mfr. Part No. RTO020F680R0JTE3 Mouser Part No 72-RTO20F-680-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 20watts 680ohms 5% NON-STANDARD Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	94In Stock	£6.47 £6.41 £5.83 £5.46 £5.31	Min.: 1 Mult.: 1	Radial	680 Ohms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 50watts 1ohm 5% RTO050F1R000JTE1 Vishay / Sfernice 1: £11.65 93In Stock	Mfr. Part No. RTO050F1R000JTE1 Mouser Part No 72-RTO50F-1-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 50watts 1ohm 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	93In Stock	£11.65 £7.96 £7.31 £6.33 £6.21	Min.: 1 Mult.: 1	Radial	1 Ohms	50 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 50watts 1.5Kohms 5% RTO050F15000JTE1 Vishay / Sfernice 1: £9.71 50In Stock	Mfr. Part No. RTO050F15000JTE1 Mouser Part No 72-RTO50F-1.5K-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 50watts 1.5Kohms 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	50In Stock	£9.71 £8.00 £7.60 £7.38 View £7.18 £6.80 £6.70 £6.55 Quote	Min.: 1 Mult.: 1	Radial	1.5 kOhms	50 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 50watts 10ohms 5% RTO050F10R00JTE1 Vishay / Sfernice 1: £7.87 47In Stock 2,000Expected 24/12/2026	Mfr. Part No. RTO050F10R00JTE1 Mouser Part No 72-RTO50F-10-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 50watts 10ohms 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	47In Stock 2,000Expected 24/12/2026	£7.87 £6.36 £6.01 £5.53 View £5.44 £5.38 £5.01 Quote	Min.: 1 Mult.: 1	Radial	10 Ohms	50 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 50watts 100ohms 5% RTO050F100R0JTE1 Vishay / Sfernice 1: £8.82 63In Stock 150Expected 17/12/2026	Mfr. Part No. RTO050F100R0JTE1 Mouser Part No 72-RTO50F-100-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 50watts 100ohms 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	63In Stock 150Expected 17/12/2026	£8.82 £7.18 £6.80 £6.57 View £6.41 £6.22 £5.98 £5.64	Min.: 1 Mult.: 1	Radial	100 Ohms	50 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 50watts 10Kohms 5% RTO050F10001JTE1 Vishay / Sfernice 1: £8.68 56In Stock	Mfr. Part No. RTO050F10001JTE1 Mouser Part No 72-RTO50F-10K-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 50watts 10Kohms 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	56In Stock	£8.68 £7.09 £6.73 £6.51 View £6.34 £6.21	Min.: 1 Mult.: 1	Radial	10 kOhms	50 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 50watts 1Kohms 5% RTO050F10000JTE1 Vishay / Sfernice 1: £8.23 85In Stock	Mfr. Part No. RTO050F10000JTE1 Mouser Part No 72-RTO50F-1K-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 50watts 1Kohms 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	85In Stock	£8.23 £6.70 £6.69 £6.20 View £5.81 £5.71 £5.64	Min.: 1 Mult.: 1	Radial	1 kOhms	50 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole RTO 20 F U033 1% TU50 e3 RTO020FR0330FTE3 Vishay / Sfernice 1: £23.52 44In Stock	Mfr. Part No. RTO020FR0330FTE3 Mouser Part No 72-RTO020FR0330FTE3	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 20 F U033 1% TU50 e3 Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	44In Stock	£23.52 £16.60 £15.22 £14.02 View £13.37 £13.26 Quote	Min.: 1 Mult.: 1	Radial	33 mOhms	20 W	1 %	700 PPM / C
Thick Film Resistors - Through Hole RTO 50 F 3U74 1% TU50 e1 RTO050F3R740FTE1 Vishay / Sfernice 1: £20.02 45In Stock	Mfr. Part No. RTO050F3R740FTE1 Mouser Part No 72-RTO050F3R740FTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 50 F 3U74 1% TU50 e1	Datasheet	45In Stock	£20.02 £14.47 £11.89 £11.54 View £11.24 £11.15 Quote	Min.: 1 Mult.: 1	Radial	3.74 Ohms	50 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole 220 OHM 5% 150PPM 20W RTO020F220R0JTE3 Vishay / Sfernice 1: £8.50 500Expected 31/12/2026	Mfr. Part No. RTO020F220R0JTE3 Mouser Part No 72-RTO020F220R0JTE3	Vishay / Sfernice	Thick Film Resistors - Through Hole 220 OHM 5% 150PPM 20W Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	500Expected 31/12/2026	£8.50 £6.06 £5.92 £5.20 View £4.78 £4.64 £4.28 £4.18	Min.: 1 Mult.: 1	Radial	220 Ohms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 50wattts RTO050F15R00JTE1 Vishay / Sfernice 1: £9.55 272On Order	Mfr. Part No. RTO050F15R00JTE1 Mouser Part No 72-RTO050F15R00JTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole 50wattts Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	272On Order On Order Ship Dates Mfr. No: RTO050F15R00JTE1 Stock: 0 On Order: 22 Expected 22/12/2026 250 Expected 02/02/2027 Factory Lead Time: 12 Weeks	£9.55 £7.83 £7.43 £7.19 View £7.01 £6.57 £6.01 £5.90 Quote	Min.: 1 Mult.: 1	Radial	15 Ohms	50 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 50W 470ohms 5% RTO050F470R0JTE1 Vishay / Sfernice 1: £9.07 200On Order	Mfr. Part No. RTO050F470R0JTE1 Mouser Part No 72-RTO050F470R0JTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole 50W 470ohms 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	200On Order On Order Ship Dates Mfr. No: RTO050F470R0JTE1 Stock: 0 On Order: 100 Expected 03/11/2026 100 Expected 22/12/2026 Factory Lead Time: 12 Weeks	£9.07 £7.43 £7.05 £6.84 View £6.66 £6.48 £5.98 £5.67 Quote	Min.: 1 Mult.: 1	Radial	470 Ohms	50 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 50W 56ohm 5% RTO050F56R00JTE1 Vishay / Sfernice 1: £8.39 200Expected 31/12/2026	Mfr. Part No. RTO050F56R00JTE1 Mouser Part No 72-RTO050F56R00JTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole 50W 56ohm 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	200Expected 31/12/2026	£8.39 £6.84 £6.83 £6.70 £6.21	Min.: 1 Mult.: 1	Radial	56 Ohms	50 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole RTO 20 F 2U7 5% TU50 e3 RTO020F2R700JTE3 Vishay / Sfernice 1: £11.13 50Expected 29/10/2026	Mfr. Part No. RTO020F2R700JTE3 Mouser Part No 72-RTO020F2R700JTE3	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 20 F 2U7 5% TU50 e3 Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	50Expected 29/10/2026	£11.13 £7.68 £7.67 £6.80 View £6.19 £6.00 £5.98 £5.88 Quote	Min.: 1 Mult.: 1	Radial	2.7 Ohms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole RTO 20 F U015 5% TU50 e3 RTO020FR0150JTE3 Vishay / Sfernice 1: £14.94 20Expected 31/12/2026	Mfr. Part No. RTO020FR0150JTE3 Mouser Part No 72-RTO020FR0150JTE3	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 20 F U015 5% TU50 e3 Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	20Expected 31/12/2026	£14.94 £10.55 £10.54 £9.52 View £8.90 £8.18 £8.07 £8.01 Quote	Min.: 1 Mult.: 1	Radial	15 mOhms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole RTO 50 F 220U 5% TU50 e1 RTO050F220R0JTE1 Vishay / Sfernice 1: £9.03 48Expected 31/12/2026	Mfr. Part No. RTO050F220R0JTE1 Mouser Part No 72-RTO050F220R0JTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 50 F 220U 5% TU50 e1	Datasheet	48Expected 31/12/2026	£9.03 £7.36 £6.98 £6.91 View £6.57 £6.39 £6.21	Min.: 1 Mult.: 1	Radial	220 Ohms	50 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole RTO 50 F 47U 1% TU50 e1 RTO050F47R00FTE1 Vishay / Sfernice 1: £18.20 29Expected 19/01/2027	Mfr. Part No. RTO050F47R00FTE1 Mouser Part No 72-RTO050F47R00FTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 50 F 47U 1% TU50 e1	Datasheet	29Expected 19/01/2027	£18.20 £12.85 £12.84 £11.86 View £10.85 £10.21 £10.12 £10.07 Quote	Min.: 1 Mult.: 1	Radial	47 Ohms	50 W	1 %	150 PPM / C
Thick Film Resistors - Through Hole 20watts 2.2ohms 5% NON-STANDARD RTO020F2R200JTE3 Vishay / Sfernice 1: £7.65 160Expected 05/01/2027	Mfr. Part No. RTO020F2R200JTE3 Mouser Part No 72-RTO20F-2.2-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 20watts 2.2ohms 5% NON-STANDARD Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	160Expected 05/01/2027	£7.65 £6.19 £5.85 £5.84 View £5.49 £5.33 £5.31	Min.: 1 Mult.: 1	Radial	2.2 Ohms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole 20watts 4.7Kohms 5% RTO020F47000JTE3 Vishay / Sfernice 1: £7.65 75Expected 07/01/2027	Mfr. Part No. RTO020F47000JTE3 Mouser Part No 72-RTO20F-4.7K-5	Vishay / Sfernice	Thick Film Resistors - Through Hole 20watts 4.7Kohms 5% Learn More about Vishay / Sfernice vishay sfernice rto20 50 power resistors	Datasheet	75Expected 07/01/2027	£7.65 £6.19 £5.85 £5.65 View £5.49 £5.33 £5.24 £5.17	Min.: 1 Mult.: 1	Radial	4.7 kOhms	20 W	5 %	150 PPM / C
Thick Film Resistors - Through Hole RTO 50 F 51U 5% TU50 e1 RTO050F51R00JTE1 Vishay / Sfernice 1: £9.03 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. RTO050F51R00JTE1 Mouser Part No 71-RTO050F51R00JTE1	Vishay / Sfernice	Thick Film Resistors - Through Hole RTO 50 F 51U 5% TU50 e1	Datasheet	Non-Stocked Lead-Time 12 Weeks	£9.03 £7.36 £6.98 £6.97 View £6.57 £6.39 £6.29 £6.21	Min.: 1 Mult.: 1	Radial	51 Ohms	50 W	5 %	150 PPM / C

RTO20 & RTO50 Power Resistors

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4.32 mOhms
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15 mOhms
20 mOhms
25 mOhms
33 mOhms
40 mOhms
46 mOhms
50 mOhms
62 mOhms
68 mOhms
91 mOhms
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RTO20 & RTO50 Power Resistors

Types of Resistors

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