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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Resistance
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Case Code - in
Case Code - mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 30ohms 5%
Datasheet
43In Stock
Min.: 1
Mult.: 1

Radial 30 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - SMD RTO 20 C 2U4 5% TU50 e3
Datasheet
39In Stock
Min.: 1
Mult.: 1

SMD/SMT 2.4 Ohms 20 W 5 % 150 PPM / C TO-220-2 Flat Lead TO-220-2 Flat Lead
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 10ohms 1%
Datasheet
100In Stock
Min.: 1
Mult.: 1

Radial 10 Ohms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 220 OHM 5% 150PPM 20W
Datasheet
718In Stock
Min.: 1
Mult.: 1

Radial 220 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 22ohm 5%
Datasheet
838In Stock
Min.: 1
Mult.: 1

Radial 22 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 20 F 820U 10% TU50 e3
Datasheet
39In Stock
Min.: 1
Mult.: 1

Radial 820 Ohms 20 W 10 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - SMD RTO 50 C 30U 5% TU50 e1
Datasheet
35In Stock
Min.: 1
Mult.: 1

SMD/SMT 30 Ohms 50 W 5 % 150 PPM / C TO-220-2 Flat Lead TO-220-2 Flat Lead
Vishay / Sfernice Thick Film Resistors - SMD RTO 50 C 47U 5% TU50 e1
Datasheet
20In Stock
Min.: 1
Mult.: 1

SMD/SMT 47 Ohms 50 W 5 % 150 PPM / C TO-220-2 Flat Lead TO-220-2 Flat Lead
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 50U 1% TU50 e1
Datasheet
26In Stock
Min.: 1
Mult.: 1

Radial 50 Ohms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 20 F U015 5% TU50 e3
Datasheet
20In Stock
Min.: 1
Mult.: 1

Radial 15 mOhms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - SMD RTO 50 C 100U 5% TU50 e1
Datasheet
50In Stock
Min.: 1
Mult.: 1
SMD/SMT 100 Ohms 50 W 5 % 150 PPM / C TO-220-2 Flat Lead TO-220-2 Flat Lead
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 16U 1% TU50 e1
Datasheet
11In Stock
50Expected 9/17/2026
Min.: 1
Mult.: 1

Radial 16 Ohms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 2.55 OHM 1% 150PPM 50W
Datasheet
27In Stock
Min.: 1
Mult.: 1

Radial 2.55 Ohms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 47K 5% TU50 e1
Datasheet
45In Stock
Min.: 1
Mult.: 1
Radial 47 kOhms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - SMD RTO 20 C 10U 5% TU50 e3
Datasheet
46In Stock
Min.: 1
Mult.: 1
SMD/SMT 10 Ohms 20 W 5 % 150 PPM / C TO-220-2 Flat Lead TO-220-2 Flat Lead
Vishay / Sfernice Thick Film Resistors - SMD RTO 50 C 220U 5% TU50 e1
Datasheet
34In Stock
Min.: 1
Mult.: 1
SMD/SMT 220 Ohms 50 W 5 % 150 PPM / C TO-220-2 Flat Lead TO-220-2 Flat Lead
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 3U 1% TU50 e1
Datasheet
40In Stock
Min.: 1
Mult.: 1
Radial 3 Ohms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 5 OHM 1% 150PPM 50W
Datasheet
50In Stock
Min.: 1
Mult.: 1

Radial 5 Ohms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 6K8 5% TU50 e1
Datasheet
21In Stock
Min.: 1
Mult.: 1

Radial 6.8 kOhms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 0.05ohms 5%
Datasheet
44In Stock
Min.: 1
Mult.: 1

Radial 500 mOhms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 20 F 2K2 5% TU50 e3
Datasheet
71In Stock
Min.: 1
Mult.: 1

Radial 2.2 kOhms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 20 F 47U 10% TU50 e3
Datasheet
23In Stock
Min.: 1
Mult.: 1
Radial 47 Ohms 20 W 10 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - SMD RTO 50 C 10U 1% TU50 e1
Datasheet
9In Stock
Min.: 1
Mult.: 1

SMD/SMT 10 Ohms 50 W 1 % 150 PPM / C TO-220-2 Flat Lead TO-220-2 Flat Lead
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 4K3 5% TU50 e1
Datasheet
38In Stock
Min.: 1
Mult.: 1

Radial 4.3 kOhms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 47K 1% TU50 e1
Datasheet
45In Stock
Min.: 1
Mult.: 1
Radial 47 kOhms 50 W 1 % 150 PPM / C