TO247 Power Pulse-loading Resistors (RMG100)

TO247 Power Pulse-loading Resistors (RMG100)

TO-247 Power Resistors handle high-speed pulses.

Providing design engineers with a high-power resistive device in a stable transistor style package, Direct Electronics RMG100 Series TO-247 power resistors are available in 100W.

The resistors are specified for applications that require accuracy and stability. The RMG100 Series resistors are designed with an alumina ceramic layer that separates the resistance element and mounting tab.

This construction provides very low thermal resistance while ensuring high insulation resistance between the terminals and the metal back plate. As a result, the resistors feature a very low inductance, making them ideal for high frequency and high-speed pulse applications.

Additional applications for the RMG100 Series TO-247 resistors include automation test equipment, high frequency snubber and pulse handling circuits, motor control and drive circuits, switch mode power supplies, load resistors, automotive electronics, industrial power equipment, UPS systems and industrial computers.

RMG100 Series 100W resistors feature a resistance range of 0.1Ω to 10KΩ and operating temperature range is -65°C to +175°C.

Direct will also produce devices outside these specifications to meet customer requirements. The RMG100 Series power resistors are RoHS-compliant with Pb-free Terminations. Contact us with your specific needs. Download PDF Specification TO247 Power Pulse-loading Resistors (RMG100).

Features :
  1. TO-247 Style Power Package.
  2. Single M3 Screw Mounting to Heat Sink.
  3. Molded Case for Protection and Easy to Mount.
  4. Non-Inductive Design, Electrically Isolated Case.
  5. 100 Watts at 25°C Case Temperature Heat Sink Mounted.
Applications :
  1. Low Energy Pulse Loading.
  2. Gate Resistors in Power Supplies.
  3. UPS, Snubbers, Voltage Regulation.
  4. Terminal Resistance in RF Power Amplifiers.
  5. Load and Dumping Resistors in CRT Monitors.
Dimensions (Unit: mm) (RMG100) TO247
Pulse Loading TO-247 Power Resistor
RMG100 Dimensions (Unit: mm)
Type W H T T1 T2 B B1 C D D1 G R
RMG100 15.49
Electrical Characteristics Specifications (RMG100) TO247
Resistance Range Resistance Tolerance TCR(PPM/°C)
0.1Ω~1Ω ±5%
>1Ω~3Ω ±1% ±300
>3Ω~10Ω ±1%
>10Ω~10KΩ ±1%
Operating Voltage: 350V Max. Dielectric Strength: 1800V AC
Insulation Resistance: 10GΩ min. Working Temperature Range: -65°C to +175°C
Environmental Characteristics (RMG100) TO247
Test Item Specification Test Method
Temperature Coefficient of Resistance As spec. Referenced to 25°C, ΔR taken at +105°C
Short Time Overload ΔR±0.5% 1.5 times rated power with applied voltage not to exceed 1.5 times maximum continuous operating voltage for 5 seconds.
Dielectric strength ΔR±0.15% MIL-STD-202F Method 301(1800V AC, 60s)
Load Life ΔR±1.0% MIL-PRF-39009D, 4.8.13 Rated power, 2,000 hours.
Moisture resistance ΔR±0.5% -10°C~+65°C, RH>90%, cycle 240 hours.
Thermal Shock ΔR±0.5% MIL-STD-202, Method 107G.
-65°C~150°C,100 cycle
Terminal Strength ΔR±0.2% MIL-STD-202F, Method 211, Cond. A (Pull Test) 2.4N
Vibration, High Frequency ΔR±0.42% MIL-STD-202F, Method 204, Cond.D
Solderability 90% min coverage MIL-STD-202F Method 208H
245°C±5°C, 3±0.5 (sec)
Lead Material: Tinned Copper. Thermal Grease Should be Applied Properly.
When in Free Air at 25°C, the RMG100 is Rated for 3.5W.
The Case Temperature is to be used for the Definition of the Applied Power Limit.
The Case Temperature Measurement Must be Made with a Thermocouple Contacting the Center of the Component Mounted on the Designed Heat Sink.
Power Derating Curve (RMG100) TO247
TO-247 (RMG100) Power Derating Curve
TO-247 (RMG100) Power Derating Curve
Order Codes (RMG100) TO247
RMG 100 J P D 10R
Part Number
Power Rating (W)
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
G ±300PPM/°C
- No specified
Resistance (Ω)
0R1 0.1Ω
10R 10Ω
1K 1KΩ
10K 10KΩ