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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Temperature Coefficient
Case Code - in
Case Code - mm
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 1ohm 5%
Datasheet
10In Stock
Min.: 1
Mult.: 1

Radial 1 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 10ohms 5%
Datasheet
36In Stock
Min.: 1
Mult.: 1

Radial 10 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 10Kohms 5%
Datasheet
138In Stock
Min.: 1
Mult.: 1

Radial 10 kOhms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 2.2ohms 5% NON-STANDARD
Datasheet
15In Stock
50Expected 8/25/2026
Min.: 1
Mult.: 1

Radial 2.2 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 22ohms 5% NON-STANDARD
Datasheet
152In Stock
Min.: 1
Mult.: 1

Radial 22 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 3.9ohms 5% NON-STANDARD
Datasheet
36In Stock
Min.: 1
Mult.: 1

Radial 3.9 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 330ohms 5% NON-STANDARD
Datasheet
129In Stock
Min.: 1
Mult.: 1

Radial 330 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 4.7Kohms 5%
Datasheet
75In Stock
Min.: 1
Mult.: 1

Radial 4.7 kOhms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 500Kohms 5%
Datasheet
13In Stock
50Expected 10/6/2026
Min.: 1
Mult.: 1

Radial 500 kOhms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 680ohms 5% NON-STANDARD
Datasheet
44In Stock
100Expected 8/27/2026
Min.: 1
Mult.: 1

Radial 680 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50watts 100ohms 5%
Datasheet
173In Stock
100Expected 10/8/2026
Min.: 1
Mult.: 1

Radial 100 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50watts 1Kohms 5%
Datasheet
85In Stock
Min.: 1
Mult.: 1

Radial 1 kOhms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 20 F U033 1% TU50 e3
Datasheet
44In Stock
Min.: 1
Mult.: 1

Radial 33 mOhms 20 W 1 % 700 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 50W 12ohm 5%
Datasheet
1.258On Order
Min.: 1
Mult.: 1

Radial 12 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20W 12ohm 5%
Datasheet
101Expected 11/3/2026
Min.: 1
Mult.: 1

Radial 12 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 20 F 4U7 1% TU50 e3
Datasheet
50Expected 10/15/2026
Min.: 1
Mult.: 1
Radial 4.7 Ohms 20 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 20 F 6K8 1% TU50 e3
Datasheet
48Expected 8/25/2026
Min.: 1
Mult.: 1
Radial 6.8 kOhms 20 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 1U 1% TU50 e1
Datasheet
40Expected 10/29/2026
Min.: 1
Mult.: 1
Radial 1 Ohms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 1.5ohms 1%
Datasheet
100Expected 8/11/2026
Min.: 1
Mult.: 1

Radial 1.5 Ohms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 2K7 5% TU50 e1
Datasheet
50Expected 10/29/2026
Min.: 1
Mult.: 1

Radial 2.7 kOhms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 2U 5% TU50 e1
Datasheet
100Expected 10/27/2026
Min.: 1
Mult.: 1

Radial 2 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 330ohm 5%
Datasheet
205On Order
Min.: 1
Mult.: 1

Radial 330 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 3U74 1% TU50 e1
Datasheet
45Expected 10/29/2026
Min.: 1
Mult.: 1
Radial 3.74 Ohms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50watts 1ohm 5%
Datasheet
100Expected 8/20/2026
Min.: 1
Mult.: 1

Radial 1 Ohms 50 W 5 % 150 PPM / C