20W Power Resistors, RTO 20 Series

The Vishay / Sfernice RTO 20 Series 20W Power Resistors utilize thick film technology and the compact and easy to mount TO-220 package. The RTO20 series features high power dissipation to size ratio, wide resistance range from 0.01Ω to 550kΩ, and negligible inductance.

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Qty. RoHS ECAD Model Series
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Maximum Operating Temperature
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Vishay / Sfernice Thick Film Resistors - Through Hole 20W 2.7Kohm 5%
Datasheet
79In Stock
Min.: 1
Mult.: 1

RTO20F 2.7 kOhms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 470 OHM 5% 150PPM 20W
Datasheet
1In Stock
Min.: 1
Mult.: 1

RTO20F 470 Ohms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20W 56ohm 5%
Datasheet
84In Stock
Min.: 1
Mult.: 1

RTO20F 56 Ohms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20W 82ohm 5%
Datasheet
85In Stock
Min.: 1
Mult.: 1

RTO20F 82 Ohms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20watts 1ohm 5%
Datasheet
10In Stock
Min.: 1
Mult.: 1

RTO20F 1 Ohms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20watts 10ohms 5%
Datasheet
36In Stock
Min.: 1
Mult.: 1

RTO20F 10 Ohms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20watts 10Kohms 5%
Datasheet
138In Stock
Min.: 1
Mult.: 1

RTO20F 10 kOhms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20watts 2.2ohms 5% NON-STANDARD
Datasheet
15In Stock
50Expected 2026-08-25
Min.: 1
Mult.: 1

RTO20F 2.2 Ohms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20watts 22ohms 5% NON-STANDARD
Datasheet
152In Stock
Min.: 1
Mult.: 1

RTO20F 22 Ohms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20watts 3.9ohms 5% NON-STANDARD
Datasheet
36In Stock
Min.: 1
Mult.: 1

RTO20F 3.9 Ohms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20watts 330ohms 5% NON-STANDARD
Datasheet
129In Stock
Min.: 1
Mult.: 1

RTO20F 330 Ohms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20watts 4.7Kohms 5%
Datasheet
75In Stock
Min.: 1
Mult.: 1

RTO20F 4.7 kOhms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20watts 500Kohms 5%
Datasheet
13In Stock
50Expected 2026-10-06
Min.: 1
Mult.: 1

RTO20F 500 kOhms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20watts 680ohms 5% NON-STANDARD
Datasheet
44In Stock
100Expected 2026-08-27
Min.: 1
Mult.: 1

RTO20F 680 Ohms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20 F U033 1% TU50 e3
Datasheet
44In Stock
Min.: 1
Mult.: 1

RTO20F 33 mOhms 20 W 1 % 700 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 20W 12ohm 5%
Datasheet
101Expected 2026-11-03
Min.: 1
Mult.: 1

RTO20F 12 Ohms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20 F 4U7 1% TU50 e3
Datasheet
50Expected 2026-10-15
Min.: 1
Mult.: 1
RTO20F 4.7 Ohms 20 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 20 F 6K8 1% TU50 e3
Datasheet
48Expected 2026-08-25
Min.: 1
Mult.: 1
RTO20F 6.8 kOhms 20 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 20watts 560ohms 5%
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1

RTO20F 560 Ohms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20 F 2U7 5% TU50 e3
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1

RTO20F 2.7 Ohms 20 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 5K OHM 1% 150PPM 20W
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1

RTO20F 5 kOhms 20 W 1 % - 55 C + 155 C 500 V Radial Tube
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
RTO20F 6.2 kOhms 20 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 20 F U01 5% TU50 e3
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1

RTO20F 10 mOhms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 20 F U046 5% TU50 e3
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1

RTO20F 46 mOhms 20 W 5 % 150 PPM / C - 55 C + 155 C 250 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 .05 OHM 5% 150PPM 20W
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 50
Mult.: 50

RTO20F 50 mOhms 20 W 1 % 700 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