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27.05.16 /  Kategorie: Passive Bauelemente, Beck Handel

New High Voltage Resistors for Automotive from KOA



KOA’s high voltage HV73-series has been expanded with the addition of the new HV73V-types for automotive applications.

The special inner material makes the part suitable for high voltages with improved temperature cycling stability compared to standard resistors. The higher critical resistance allows a higher voltage at higher resistance values. The special coating ensures that higher voltages can be applied at operating temperatures up to +155 °C.

Increased power rating for HV73V 0805 = 0.25 W.

The new high voltage type chip resistor HV73V-series achieves max. working voltages 2.5 times higher than general-purpose type chip resistors. This means fewer resistors are used in voltage detecting circuits saving PCB space. The HV73V is suitable for high reliability automotive applications and ideal for high voltage applications up to 3000 V (DC) while offering a very low resistance drift over the full voltage range.

Improved characteristics to withstand high voltages is achieved by using a special inner coating for the resistive element. Excellent heat and moisture resistance are ensured by the use of metal glaze thick film.

Product is adapted to the automotive standard AEC-Q200.

Product Features:

  • Working voltage: 3000 V(D.C.)
  • Resistance range: 10 kΩ to 51 MΩ
  • Operating temperature range: -55 °C ÷ +155 °C
  • Sizes: 0603, 0805, 1206, 2010 and 2512 inch
  • Tolerance: ±0.5 %, ±1 %, ±2 % and ±5 %
  • Anti-Sulfuration types available (HV73_RT)
  • EU-RoHS compliant


  • Battery module (Voltage monitoring, Battery management circuit)
  • Inverter module (Inverter circuit, DC-DC converter)
  • Around circuits where regenerative voltage of motor is applied
  • Voltage detection circuit of quick charger