Power Resistors Series

Vishay Power Resistors Series includes 4 types ranging from 5W to 50W. Vishay Power Resistors Series components are designed to be mounted onto a heatsink and can bear high short-time overloads. Three types of terminations are available. The resistors are non-inductive and are particularly suitable for high-frequency operation and cut-out circuits. -RCH Series: 5 W to 50 W, with high power rating and high overload capabilities. -D2TO20 Series: 20 W at 25ºC surface mounted resistor. -RTO Series: 20 W at 25ºC with high power dissipation to size ratio, wide resistance range, and negligible inductance. -LTO Series: 30 W at 25ºC and is an extension of the RTO Series with direct mounting ceramic on a heatsink.

Results: 17
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Qty. RoHS ECAD Model Series
Resistance
Power Rating
Tolerance
Temperature Coefficient
Minimum Operating Temperature
Maximum Operating Temperature
Voltage Rating
Length
Termination Style
Packaging
Height
Lead Diameter
Lead Spacing
Product
Type
Width
Vishay / Sfernice Thick Film Resistors - Through Hole 50W 22ohm 5%
Datasheet
838In Stock
Min.: 1
Mult.: 1

RTO50F 22 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 2.2ohm 5%
Datasheet
99In Stock
Min.: 1
Mult.: 1

RTO50F 2.2 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 47ohm 5%
Datasheet
979In 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 30W 100ohm 1%
Datasheet
518In Stock
200Expected 20/10/2026
Min.: 1
Mult.: 1

LTO 30 100 Ohms 30 W 1 % 150 PPM / C - 55 C + 155 C 250 V 10.4 mm Radial Tube 16.2 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 3.2 mm
Vishay / Sfernice Thick Film Resistors - Through Hole 20W 15ohm 5%
Datasheet
84In Stock
Min.: 1
Mult.: 1

RTO20F 15 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 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 20W 56ohm 5%
Datasheet
82In 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 50W 3.9ohm 5%
Datasheet
87In 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
71In Stock
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 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 50W 12ohm 5%
Datasheet
1 758On 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 50W 330ohm 5%
Datasheet
205On 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 20W 12ohm 5%
Datasheet
101Expected 03/11/2026
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 30W 2.2ohm 1%
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1

LTO 30 2.2 Ohms 30 W 1 % 150 PPM / C - 55 C + 155 C 250 V 10.4 mm Radial Tube 16.2 mm 5.08 mm Thick Film Resistors Leaded Power Resistor, Thick Film Technology 3.2 mm