TO220 High Power Resistors (RMG35)

TO220 High Power Resistors (RMG35)

TO220 High Power Resistors boast superior thermal performance.

Giving power electronics design engineers a comprehensive range of high-wattage surface mount and through-hole resistors designed to provide superior thermal performance in densely populated power supply circuits, Direct Electronics has released a series of noninductive power resistors with power ratings 35W, in popular transistor-style packages (TO-220).

The RMG35 resistors are designed to provide complete thermal flow from the resistive element to the integral metal flange of the TO-style packages, giving design engineers the ability to specify them for high-wattage power electronics circuits that can experience elevated temperatures during operation.

The devices are all rated for operation from -65°C to +150°C.

Their superior thermal performance and extreme power ratings make the RMG35 Series resistors ideal for switch-mode power supply circuits, motor control and drive circuits, automotive electronics, industrial power equipment and UPS systems. In addition, their non-inductance exhibit excellent high frequency characteristics for use in high frequency industrial RF power sources, RF linear amplifiers, termination resistor of RF circuit etc.

The RMG35 Series resistors feature thermally enhanced two-leaded industry standard packages designed for mounting directly to a heatsink. Direct Electronics will also produce devices outside these specifications to meet customer requirements, with comprehensive application engineering and design support available for customers worldwide.

All RMG35 Series devices are RoHS-compliant, and compatible with high temperature soldering processes normally employed for lead free solders.
Contact us with your specific needs. Download PDF Specification TO220 High Power Resistor (RMG35).

Features :
  1. Single Screw Mounting to Heat Sink.
  2. Molded Case for Protection and Easy to Mount.
  3. 35 Watt at 25°C Case Temperature Heat Sink Mounted.
  4. TO-220 Style Power Package, Isolated Case, Non Inductive.
  5. Low Thermal Resistance to Heat Sink at Rth < 4.28°C/W.
Applications :
  1. RF Power Amplifier.
  2. Switching Power Supplies.
  3. Low Energy Pulse Loading.
  4. Automated Machine Controller.
  5. UPS, Snubbers Circuits, Voltage Regulation.
Dimensions (Unit: mm) (RMG35) TO-220
TO-220 Style Resistors (RMG35)
TO-220 Style Resistors (RMG35)
Type W H T T1 T2 B B1 C D D1 G R M N
RMG35 9.91
4.00 4.83
Electrical Characteristics Specifications (RMG35) TO-220
Resistance Range Resistance Tolerance TCR(PPM/°C)
0.05Ω~1Ω ±5.00%
>0.1Ω~1Ω ±1.00%
>1Ω~3Ω ±1.00%
>3Ω~10KΩ ±1.00%
>10Ω~10KΩ ±0.50%
Operating Voltage:350V Max. Dielectric Strength: 1800VAC. Insulation Resistance: 10GΩmin.
Working Temperature Range:-65°C to +150°C. Resistance Value < 1Ω is Available
Environmental Characteristics (RMG35) TO-220
Test Item Specification Test Method
Temperature Coefficient of Resistance 10Ω and above, ±50ppm/°C
1Ω and 10Ω, (±100ppm)/°C
Referenced to 25°C, ΔR taken at +105°C
Short Time Overload Δ R±0.3% 2 times rated power with applied voltage not to exceed 1.5 times maximum continuous operating voltage for 5 seconds.
Load Life Δ R±1.0% MIL-R-39009,2,000 hours at rated power.
Humidity (Steady State) Δ R±0.5% MIL-STD-202F, Method 103B
40°C, 90~95%RH, RCWV 1.5hours ON, 0.5hours OFF. total 1000~1048 hours.
Thermal Shock Δ R±0.3% MIL-STD-202, Method 107G.
-65°C~150°C,100 cycle
Terminal Strength Δ R±0.2% MIL-STD-202, Method 211, Cond.A(Pull Test) 2.4N.
Vibration, High Frequency Δ R±0.2% MIL-STD-202, Method 204, Cond.D.
Lead Material: Tinned Copper. Without a Heat Sink, when in Free Air at 25°C, the RMG20 is Rated for 2.25W.
The Case Temperature Measurement Must be Made with a Thermocouple Contacting the Center of the Component Mounted on the Designed Heat Sink.
Thermal Grease Should be Applied Properly.
Power Derating Curve (RMG35) TO-220
(RMG35) Power Derating Curve
(RMG35) Power Derating Curve
Order Codes (RMG35) TO-220
RMG 35 J P D 10R
Part Number
Power Rating
Resistance Tolerance (%)
D ±0.5%
F ±1%
G ±2%
J ±5%
K ±10%
T Tube
P Bulk
D ±50PPM/°C
E ±100PPM/°C
F ±200PPM/°C
- No specified
Resistance (Ω)
0R1 0.1Ω
10R 10Ω
1K 1KΩ
10K 10KΩ