Aluminum Housed Chassis Mounted Wire Wound Resistor

Aluminum Housed Chassis Mounted Wire Wound Resistor
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    Aluminum housed chassis mounted wire wound resistor is made up of a ceramic resistor and a CuNi-cr or Cr-Ni-wire winding resistor. It is connected to the aluminum housing through a special silicone resin, extremely applicable to operations under harsh conditions.

    Dimensions
    • 5W、75W (A) dimensions drawing
    • 75W(B)、100W、150W、200W dimensions
    Dimensions Unit: mm
    Type Power (W) A ±0.13 B±0.13 C±0.25 D±0.13 E±0.38 F±0.39 L±1.57 L1±1.57 L3 H±0.76 D1
    RX605 5 11.3 12.5 1.3 2.4 16.4 8.5 28.6 15.2 8.2 1.2
    RX610 10 14.3 15.9 2.2 2.4 20.3 10.8 35.0 19.0 10.3 2.0
    RX615 25 18.3 19.8 2.2 3.2 27.4 13.5 49.3 27.0 13.9 2.0
    RX620 50 39.7 21.5 2.2 3.2 28.8 15.6 70.6 50.0 15.5 2.0
    RX625 75A 39.7 21.5 2.2 3.2 28.8 15.6 93.0 72.4 15.5 2.0
    RX625 75B 93.5 66.5 17.6
    RX630 100 125.0 98.0 37
    RX635 150 162.0 135.0 55.5
    RX640 200 192.0 165.0 70.5
    RX645 250 227.0 200.0 88
    Parameters
    Model Power (W) Dielectric Strength (V) Resistor Range Maximum Voltage Resistance
    Inductive Non-inductive
    RX605 3(5) 1000 0.1Ω-3.6kΩ 0.5Ω-1kΩ
    RX610 10(6) 1000 0.1Ω-6.2kΩ 0.5Ω-1.5kΩ
    RX615 25(12.5) 2000 0.1Ω-16kΩ 0.5Ω-10kΩ 550V
    RX620 50(20) 2000 0.1Ω-43kΩ 0.5Ω-20kΩ 1250V
    RX625 75A(30) 2000 0.1Ω-56kΩ 0.1Ω-27kΩ 1900V
    RX625 75B(30) 2000 0.1Ω-56kΩ 0.1Ω-27kΩ 1900V
    RX630 100(40) 2500 0.1Ω-75kΩ 0.1Ω-36kΩ 1900V
    RX635 150(60) 2500 0.1Ω-100kΩ 0.5Ω-47kΩ 1900V
    RX640 200(80) 2500 0.1Ω-150kΩ 1.0Ω-75kΩ 2200V
    RX645 250(100) 2500 0.1Ω-180kΩ 1.5Ω-90kΩ 2200V
    Derating Curve

      Derating requirements for high ambient temperature and the installation on cold plate:
      Curves A, B, and C are suitable for the operations of non-chassis mounted resistor.
      Curve A applies to 605 model and 610 model.
      Curve B is suited for 615 model.
      Curve C suits 620, 625, 635, 640 and 645 models.

      Cold plate size:
      605、610 models: 203×203×1 aluminum plate
      615model: 231×231×1
      520、625、630、635、640 and 645 models: 305×305×3.2 aluminum plate

      Performance Requirements
      Item Requirement
      Solder Ability Surface covered with new solder>95%, △R≤± (1%R 0.05Ω)
      Terminal Strength 5W、10W 2.5kg/25W、5kg △R≤±(1%R 0.05Ω)
      Resistance To Soldering Heat 275℃ △R≤±(1%R 0.05Ω)
      Dielectric Strength ≤10W 1000V, 25W-75W 2000V. 100 W-250 W 2500V △R≤±(1%R 0.05Ω))
      Insulation Resistance >10000MΩ
      Thermal Shock Resistance -55℃- 275℃ △R≤±(1%R 0.05Ω)
      Short-time Overload 10x rated power, 5s: △R≤±(2%R 0.05Ω)
      Moisture Resistance 40℃ △R≤±(2%R 0.05Ω)
      Load Life 1000h, 25℃±2℃: △R≤±(5%R 0.05Ω)
      Shock Resistance △ R< ± ( 1%R 0.050 )
      Vibration AR< ± ( 1%R 0.050 )
      Temperature Coefficient ±200PPM/℃

      Order requirements: model, power, resistance, non-inductance, resistance tolerance and code of technical standard should be marked.

      Order Example
      RX615-25W-100Ω-N-±5%-code of technical standard (not necessary if it is not required)

      Resistance tolerance code: F=±1% G=±2% J=±5% K=±10%

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