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 3000VRMS. 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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Description Datasheet Availability Pricing (GBP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS Termination Style
Resistance
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Case Code - in
Case Code - mm
Vishay / Sfernice Thick Film Resistors - Through Hole 20W .1ohms 1%
Datasheet
18In Stock
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Radial 100 mOhms 20 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 1.5ohms 5%
Datasheet
82In Stock
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Radial 1.5 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 20Kohms 1%
Datasheet
18In Stock
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Radial 20 kOhms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 8ohms 1%
Datasheet
42In Stock
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Radial 8 Ohms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50W .15ohms 5%
Datasheet
68In Stock
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Radial 150 mOhms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50W .5ohms 1%
Datasheet
72In Stock
Min.: 1
Mult.: 1

Radial 500 mOhms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20W 200ohms 5%
Datasheet
57In Stock
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Radial 200 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 47ohm 5%
Datasheet
1,079In Stock
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Radial 47 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 4.7ohm 5%
Datasheet
246In Stock
500Expected 30/07/2026
Min.: 1
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Radial 4.7 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 100ohms 5%
Datasheet
577In Stock
Min.: 1
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Radial 100 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 1Kohms 5%
Datasheet
287In Stock
50Expected 27/08/2026
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Radial 1 kOhms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 0.1ohms 5%
Datasheet
224In Stock
Min.: 1
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Radial 100 mOhms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50watts 10ohms 5%
Datasheet
505In Stock
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Radial 10 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20W 15ohm 5%
Datasheet
84In Stock
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Radial 15 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20W 2.7Kohm 5%
Datasheet
84In Stock
Min.: 1
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Radial 2.7 kOhms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 470 OHM 5% 150PPM 20W
Datasheet
1In Stock
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Radial 470 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20W 56ohm 5%
Datasheet
84In Stock
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Radial 56 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20W 82ohm 5%
Datasheet
85In Stock
Min.: 1
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Radial 82 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50wattts
Datasheet
6In Stock
200Expected 13/10/2026
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Mult.: 1

Radial 15 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 2U 5% TU50 e1
Datasheet
39In Stock
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Radial 2 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 3.9ohm 5%
Datasheet
105In Stock
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Radial 3.9 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 4.7Kohm 5%
Datasheet
3In Stock
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Radial 4.7 kOhms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 5 OHM 5% 150PPM 50W
Datasheet
2In Stock
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Radial 5 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 680ohm 5%
Datasheet
1In Stock
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Radial 680 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 6U8 1% TU50 e1
Datasheet
50In Stock
Min.: 1
Mult.: 1
Radial 6.8 Ohms 50 W 1 % 150 PPM / C