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Non-Inductive AC-NI Cemented Leaded Wirewound Resistors for Power Electronics

AC and AC-AT Series
AC and AC-AT Series

Vishay Intertechnology, Inc has announced a new option for its 5 W AC and AC-AT series cemented, axial-leaded wirewound resistors. Now, these resistors come with the WSZ lead form, making them suitable for surface-mount applications. This includes the AC05 WSZ and the AEC-Q200 qualified AC05-AT WSZ, which are known for their excellent pulse capability. There's also a non-inductive version, the AC05-NI WSZ, designed for fast switching circuits. With the WSZ lead form, these resistors can be assembled on PCBs alongside other surface-mount components. This simplifies the pick and place process, reduces assembly time, and lowers costs. They're ideal for snubber and inrush current limiting in pre-charge and discharge applications found in automotive and industrial electronics, energy meters, and white goods power supplies. 

These resistors can handle peak power up to 5 kW for a 1 μs pulse load and come in a range of resistance values from 0.10 Ω to 10 kΩ. Built for tough conditions, the AC05 WSZ and AC05-AT WSZ feature a non-flammable silicone cement coating that meets UL 94 V-0 standards. They operate across a wide temperature range of -55 °C to +250 °C and their wirewound construction ensures they can withstand mechanical stress and thermal shocks at high temperatures. Plus, these resistors are RoHS-compliant, halogen-free, and have tin-plated terminations, making them compatible with both lead-free and traditional soldering processes.


  • WSZ Lead Form: Surface-mount compatible
  • High Pulse Capability: Up to 5 kW for 1 μs pulse
  • Non-Inductive Option: For fast switching
  • Wide Resistance Range: 0.10 Ω to 10 kΩ
  • Robust Coating: Non-flammable silicone, UL 94 V-0
  • Temperature Range: -55 °C to +250 °C
  • Durable: Wirewound for mechanical and thermal shock resistance
  • RoHS Compliant and Halogen-Free
  • Tin-Plated Terminations: Lead-free and lead-compatible


  • Snubber Resistors
  • Inrush Current Limiting
  • Pre-Charge/Discharge Circuits
  • Automotive Electronics
  • Industrial Electronics
  • Energy Meters
  • White Goods Power Supplies
Component Datasheet

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