This website requires the use of JavaScript!

  Ask about this product

  Available in PDF

 

 

 

KEY FEATURES:
  • Resistances from 0.02 to 51K Ohms
  • High Stability Film Resistance Elements
  • Rated Power of 35, 50 and 100 Watts
  • TO-220 and TO-247 Housing
  • Resistance tolerance of ± 0.1% or ± 1%
  • Low Inductance of <10nH for RHXH1 and RHXH2; <50nH for RHXH3
  • RoHS Compliant
APPLICATIONS:
  • Power Inverters
  • Power Supplies
  • Engine Sensors
  • Temperature Sensors

These High Power, Low Inductance Resistors or RHX Series provides excellent thermal efficiency and large power handling in a small-sized package. These are offered in power ratings of 35, 50 and 100 watts and can be manufactured in resistance values from 0.02 Ohms to 51k Ohms. The inductance values come in as low as <10nH for the RHXH1 and RHXH2, and <50nH for RHXH3 series. Though this resistor comes in a small size thin profile, it can handle very large power pulses without damage when the pulse widths are 1 ms or less. With this feature, the RHX series is well-suited for high-density, compact installations.

Resistor High Power Low Inductance
PRODUCT SUMMARY:
PRODUCT SERIES (RHX) RESISTANCE RANGE (Ω) 3 POWER RATING (W) THERMAL RESISTANCE TOLERANCES
MIN MAX HEATSINK 1 FREE AIR 2
RHXH1 0.02 51K 35 1 3.3ºC/W ± 1% ( R≥0.1Ω ) ± 5%
RHXH2 0.02 51K 50 1 2.3°C/W ± 1% ( R≥0.1Ω ) ± 5%
RHXH3 0.02 51K 100 3 1.3°C/W ± 1% ( R≥0.10Ω ) ± 5%

TEMPERATURE COEFFICIENTS:

  • ± 50ppm/°C ( R≥10Ω )
  • ± 100ppm/°C ( 0.1Ω ≤ R < 10Ω )
  • ± 250ppm/°C ( R < 0.1Ω )

1 Power Rating based on 25ºC Flange Temperature
2 Power Rating based on 25ºC Ambient Temperature
3 Contact Factory for Higher or Lower Values

Electrical Characteristics
Electrical Characteristics RHXH1 & RHXH2 Values RHXH3 Value
Maxiumum Current 25A -
Inductance <10nH ( At the Standoff ) -
Insulation Resistance >1000 Megohm >1000 Megohm
Dielectric Strength 2000 VAC 2500 VAC
Temperature Range -55°C to +155°C -55°C to +155°C
Maximum Working Voltage RHX Series Calculation RHX Series Calculation

RHX Series Derating Curve

RHXH1 & RHXH2 POWER RATING NOTES:
  • H1 and H2 High Power Low Inductance Resistors must be attached to a suitable heatsink. Without a heatsink, the maximum power rating is 1W.
  • The maximum internal resistor temperature is 155°C.
  • Use the following formula to specify an appropriate heatsink:
RHXH3 POWER RATING NOTES:
  • H3 High Power Low Inductance Resistors must be attached to a suitable heatsink.
  • The maximum internal resistor temperature is 155°C.
  • Use the following formula to specify appropriate heatsink:

RHX Series Calculation

RHXH1 & RHXH2
RHXH1 and RHXH2 Diagram
MOUNTING NOTES:
  • H1 and H2 High Power Low Inductance Resistors must be attached to a suitable heatsink.
  • Use thermal grease to mount resistor to a clean, flat surface.
  • Use a compression washer to provide 150 to 300 pounds ( 665 to 1330N ) of mounting force.
  • Torque mounting screw to 8 in-lbs ( 0.9 N-m ).
  • Mounting tab is isolated from both pins.
RHXH3
RHXH3 Diagram
MOUNTING NOTES:
  • H3 High Power Low Inductance Resistors must be attached to a suitable heatsink.
  • Use thermal grease to mount resistor to a clean, flat surface.
  • Use a compression washer to provide 150 to 300 pounds ( 665 to 1330N ) of mounting force.
  • Torque mounting screw to 8 in-lbs ( 0.9 N-m ).
  • Back plate is isolated from both pins.
Environmental Performance
  Triangle symbolR  
Environmental Performance RHXH1 RHXH2 RHXH3 Test Conditions
Humidity Resistance ±1% + 0.05Ω 40°C, 90-95% RH, DC 0.1W, 1000 hr
Load Life ±1% + 0.05Ω 25°C, 90 min ON, 30 min OFF, 1000 hr
Temperature Cycle ±0.25% + 0.05Ω -55°C for 30 min, +155°C for 30 min, 1000 hr
Vibration ±0.25% + 0.05Ω IEC60068-2-6
Solder Heat ±0.1% + 0.05Ω +350°C, 3s

* Moisture Sensitivity Level: MSL-1

Available Options (Consult Factory)
  • Special Testing Requirements
How to Order RHX Series Part Number Breakdown

This datasheet is subject to change without notice.