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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Qty. RoHS Termination Style
Resistance
Power Rating
Tolerance
Temperature Coefficient
Case Code - in
Case Code - mm
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 1.5Kohms 5%
Datasheet
50Expected 10/29/2026
Min.: 1
Mult.: 1

Radial 1.5 kOhms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 51U 5% TU50 e1
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1
Radial 51 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts 560ohms 5%
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1

Radial 560 Ohms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 5K OHM 1% 150PPM 20W
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1

Radial 5 kOhms 20 W 1 %
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 20 F 6K2 5% TU50 e3
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1
Radial 6.2 kOhms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 20 F U01 5% TU50 e3
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1

Radial 10 mOhms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 20 F U046 5% TU50 e3
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1

Radial 46 mOhms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole .05 OHM 5% 150PPM 20W
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 50
Mult.: 50

Radial 50 mOhms 20 W 1 % 700 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 20watts .18ohms 1%
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1

Radial 180 mOhms 20 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 20 F U47 5% TU50 e3
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1

Radial 470 mOhms 20 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - SMD RTO 50 C 10U 5% TU50 e1
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1
SMD/SMT 10 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 150U 1% TU50 e1
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 50
Mult.: 50
SMD/SMT 150 Ohms 50 W 1 % 150 PPM / C TO-220-2 Flat Lead TO-220-2 Flat Lead
Vishay / Sfernice Thick Film Resistors - SMD 4.7 OHM 1% 150PPM 50W
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1

SMD/SMT 4.7 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 U1 1% TU50 e1
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 50
Mult.: 50
SMD/SMT 100 mOhms 50 W 1 % 250 PPM / C TO-220-2 Flat Lead TO-220-2 Flat Lead
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 150U 5% TU50 e1
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1
Radial 150 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 50w 1.37ohms 1%
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 50
Mult.: 50

Radial 1.37 Ohms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 20K 5% TU50 e1
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1
Radial 20 kOhms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 200U 1% TU50 e1
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1
Radial 200 Ohms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 20U 1% TU50 e1
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1
Radial 20 Ohms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 2K2 5% TU50 e1
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1
Radial 2.2 kOhms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 220U 5% TU50 e1
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1

Radial 220 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole 25 OHM 1% 150PPM 50W
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 50
Mult.: 50

Radial 25 Ohms 50 W 1 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 390U 5% TU50 e1
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1
Radial 390 Ohms 50 W 5 % 150 PPM / C
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 470U 1% TU50 e1
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1
Radial 470 Ohms 50 W 1 % 150 PPM / C