50W Power Resistors, RTO 50 Series

The Vishay / Sfernice RTO 50 Series high power 50W Power Resistors utilize thick film technology and the compact and easy to mount TO-220 package. The RTO50 series features high power to size ratio, ohmic value adjustment by sand trimming, and non-inductive element. The Vishay / Sfernice RTO 50 series 50W Power Resistors are RoHS compliant to directive 2002/95/EC.

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Vishay / Sfernice Thick Film Resistors - Through Hole 50W .5ohms 1%
Datasheet
72In Stock
Min.: 1
Mult.: 1

RTO50F 500 mOhms 50 W 1 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube Non-Inductive Resistors 15 mm 0.8 mm 5.08 mm Power Resistors Thick Film Power Resistor 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 47ohm 5%
Datasheet
1.079In Stock
Min.: 1
Mult.: 1

RTO50F 47 Ohms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 4.7ohm 5%
Datasheet
746In Stock
Min.: 1
Mult.: 1

RTO50F 4.7 Ohms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50watts 10ohms 5%
Datasheet
505In Stock
Min.: 1
Mult.: 1

RTO50F 10 Ohms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50wattts
Datasheet
6In Stock
200Expected 08/10/2026
Min.: 1
Mult.: 1

RTO50F 15 Ohms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 3.9ohm 5%
Datasheet
105In Stock
Min.: 1
Mult.: 1

RTO50F 3.9 Ohms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 4.7Kohm 5%
Datasheet
3In Stock
Min.: 1
Mult.: 1

RTO50F 4.7 kOhms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 56ohm 5%
Datasheet
21In Stock
50Expected 18/08/2026
Min.: 1
Mult.: 1

RTO50F 56 Ohms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 5 OHM 5% 150PPM 50W
Datasheet
2In Stock
Min.: 1
Mult.: 1

RTO50F 5 Ohms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 680ohm 5%
Datasheet
1In Stock
Min.: 1
Mult.: 1

RTO50F 680 Ohms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 6U8 1% TU50 e1
Datasheet
50In Stock
Min.: 1
Mult.: 1
RTO50F 6.8 Ohms 50 W 1 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube Non-Inductive Resistors 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F U2 5% TU50 e1
Datasheet
4In Stock
50Expected 29/10/2026
Min.: 1
Mult.: 1

RTO50F 200 mOhms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50watts 100ohms 5%
Datasheet
173In Stock
100Expected 08/10/2026
Min.: 1
Mult.: 1

RTO50F 100 Ohms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50watts 1Kohms 5%
Datasheet
85In Stock
Min.: 1
Mult.: 1

RTO50F 1 kOhms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 2.55 OHM 1% 150PPM 50W
Datasheet
27In Stock
Min.: 1
Mult.: 1

RTO50F 2.55 Ohms 50 W 1 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube Non-Inductive Resistors 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 12ohm 5%
Datasheet
1.278On Order
Min.: 1
Mult.: 1

RTO50F 12 Ohms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 1U 1% TU50 e1
Datasheet
40Expected 29/10/2026
Min.: 1
Mult.: 1
RTO50F 1 Ohms 50 W 1 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube Non-Inductive Resistors 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 1.5ohms 1%
Datasheet
100Expected 11/08/2026
Min.: 1
Mult.: 1

RTO50F 1.5 Ohms 50 W 1 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube Non-Inductive Resistors 15 mm 0.8 mm 5.08 mm Power Resistors Thick Film Power Resistor 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 2K7 5% TU50 e1
Datasheet
50Expected 29/10/2026
Min.: 1
Mult.: 1

RTO50F 2.7 kOhms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube Non-Inductive Resistors 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 2U 5% TU50 e1
Datasheet
100Expected 27/10/2026
Min.: 1
Mult.: 1

RTO50F 2 Ohms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 330ohm 5%
Datasheet
105On Order
Min.: 1
Mult.: 1

RTO50F 330 Ohms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole RTO 50 F 3U74 1% TU50 e1
Datasheet
45Expected 29/10/2026
Min.: 1
Mult.: 1
RTO50F 3.74 Ohms 50 W 1 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube Non-Inductive Resistors 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50watts 1ohm 5%
Datasheet
100Expected 20/08/2026
Min.: 1
Mult.: 1

RTO50F 1 Ohms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 50watts 1.5Kohms 5%
Datasheet
50Expected 29/10/2026
Min.: 1
Mult.: 1

RTO50F 1.5 kOhms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 0.8 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm
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
RTO50F 51 Ohms 50 W 5 % 150 PPM / C - 55 C + 155 C 500 V 10.1 mm Radial Tube 15 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 4.5 mm