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Würth Elektronik WE-VD Disk Varistors

Würth Elektronik WE-VD Disk Varistors are engineered to provide superior defense against electrical disturbances. The WE-VD series offers low clamping voltage, ensuring that even the smallest surges are quickly neutralized to protect equipment from damage. After a surge impulse, these disk varistors seamlessly transition into normal mode operation without any slip current, delivering continuous protection without interruption. Würth Elektronik WE-VD Disk Varistors are designed to withstand harsh environmental conditions and operate in a temperature range of -40°C to +85°C. The series is ideal for various applications, including 110V to 400V power supplies and EN 61000-4-5 surge protection.

Features

  • Low clamping voltage
  • After surge impulse, the varistor works immediately in normal mode so there is no slip current
  • Excellent absorption at surge impulses
  • Continuous protection without interruption
  • Superior defense against electrical disturbances

Applications

  • 12VDC to 48VDC distribution
  • 110V to 400V power supplies
  • Leakage of voltage peaks
  • Surge protection in accordance with EN 61000-4-5

Specifications

  • <25ns response time
  • 14V to 1000V AC voltage rating
  • 18V to 1465V DC voltage rating
  • 22VBR to 1800VBR (reverse) breakdown voltage
  • 100IPeak to 10000IPeak (reverse) peak pulse current
  • -40°C to +85°C operating temperature range
  • cURus (UL 1449 4. 4th edition) and VDE certified
    • UL 1449 (cURus) file E332875
    • VDE files 40016986 and 40016998
    • IEC 60950-1: 2013 Annex Q starting from ∅10mm

Additional Resources

Design Kit

Published: 2024-03-06 | Updated: 2025-10-08