TYPE CH Chassis Mount
Style 5 to 250 watts
MIL-R-18546 Approved
TYPE BCH - Exceptional
Power to Size Ratio -
15 to 35 Watts
Solid Beryllium Core

PDF Version part 1
PDF Version part 2
Electrical
  • Non Inductive Styles Available
  • Matched Set Available
  • Tolerances: 5%, 3%, 1%, .5%, .25%, .1%, .05%, .02%
  • Temperature Coefficient :
    90 PPM < 1 Ohms
    50 PPM <10 Ohms
    20 PPM > 10 Ohms
  • Special TC's Available
  • Dielectric Strength :
    1000 VRMS - 5CH, 10CH, B5CH, B10CH
    2500 VRMS - 25CH, 50CH, 100CH, B25CH
    5500 VRMS - ALL OTHERS
  • Insulation Resistance : not < 1000 Meg
  • Short Term Overload: 5 seconds at 10 times
    rated power for 4 watts size & over.
    5 seconds at 5 times rated power for
    sizes under 4 watts. Mil-R-18546


    • Mechanical
  • Body : Anodized - Aluminum finned
  • Core : Type BCH - Beryllium
  • End Caps : Stainless Steel
  • Leads : Heavy Spaded Lugs - 5 to 70 Watts
    Threaded Stud Terminals - 100 to 250 Watts
  • Construction : Completely Welded
  • Special Leads Configuration Available
  • Marking: Alphanumeric
  • Special Mechanical Configurations Available
    		•

    Pacific's Chassis Mount Type CH & BCH Resistors are designed for maximum heat dissipation by mounting to metal chassis surfaces for maximum heat transfer. They are available with standard winding as well as non-inductively wound (specified by simply adding the "N" suffix to the style) . These resistors are Mil Qualified, feature SUPERB RELIABILITY , LONG LOAD LIFE STABILITY and are outstanding in their high power dissipation with precision tolerances in minimum physical sizes. Type CH & BCH resistors meet and exceed MIL- R-18546. Their all welded construction results in reliable performance even under the most demanding of conditions and the harshest of environments. Pacific makes it's resistors in America under Approved Mil-Spec Quality Control conditions. Resistors are available in any resistance value up to the maximum listed.

     

    • HIGH POWER DENSITIES - EXCELLENT THERMAL CONDUCTIVITY
    • OUTSTANDING STABILITY & RELIABILITY - MIL QUALIFIED
    • ABLE TO OPERATE IN EXTREME TEMPERATURES
    • ALL WELDED CONSTRUCTION THROUGHOUT
    • 4 LEAD VERSIONS AVAILABLE - ALL STYLES
    • EXTREME IMPULSE TOLERANCE
    • NON INDUCTIVE STYLES AVAILABLE - ALL STYLES
    • FAST DELIVERY ON ANY VALUE

     

    5CH, 10CH, 25CH, 100CH,
    B5CH, B10CH, B25CH
    110CH, 180CH, 250CH

    Derating is required for reduced chassis mounting area and high ambient temps.


    A - When Mounted on proper alum. chassis 5CH,B5CH,10CH,B10CH,

    - 4x6x2x.040 alum. 25CH,B25CH
    - 5x7x2x.040 alum. chassis 50CH,100CH
    - 12x12x.125 alum panel
    B. Unmounted 5CH,B5CH, 10CH,B10CH
    C. Umounted 25Ch,B25CH,100CH,110CH