Monday, January 5, 2026

High-Voltage Isolation Made Easy

Having trouble with high-voltage batteries, leaks, slow switching, or safety risks? Learn about a small device that makes them work faster, safer, and more reliable.

Vishay Intertechnology Releases 1500 V 1 Form A Solid-State Relay in 4-Pin SMD-8 Package for 800 V Battery Monitoring Systems
Vishay Intertechnology Releases 1500 V 1 Form A Solid-State Relay in 4-Pin SMD-8 Package for 800 V Battery Monitoring Systems

Designing a high-voltage battery system can be very challenging whether it is for electric vehicles (EVs), energy storage systems (ESS) or industrial applications. The common issues you might have faced includes ensuring safe isolation between high-voltage circuits, preventing leakage currents that can damage components or trigger faults, and maintaining fast, reliable switching under harsh environmental conditions. Failures in these areas can lead to system downtime, costly maintenance, or safety hazards. To fight these problems you might need components that fit compact layouts while meeting strict industry standards for isolation, temperature range, and electrical reliability. Vishay claims to address these challenges with VORA1150 1500 V Automotive Grade 1 solid-state relay. It combines robust isolation, low leakage, and rapid switching in a small SMD package.

Designed specifically for 800 V battery monitoring systems, the relay’s 4-pin SMD-8 layout delivers a 5 mm creepage distance between output pins, meeting DIN EN-60644-1 standards for isolation and passing hipot tests for high-voltage battery architectures. Its fast turn-on and turn-off times enable precise control in pre-charge relays, battery management systems (BMS), on-board chargers, ESS, industrial HVAC systems, and solar installations.

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Some of the features of the VORA1150 1500 V Automotive Grade 1 solid-state relay include:

  • 1500 V solid-state relay in a small 4-pin SMD-8 package.
  • Can handle high voltage (1414 V) with very low leakage (1 µA).
  • 4-pin design gives 5 mm gap for safe isolation (meets DIN EN-60644-1 standard).
  • Passes high-voltage tests for EV battery systems.
  • Automotive-grade reliability (AEC-Q102 qualified).
  • Made with strong material (CTI 600) for safety and durability.
  • Fast switching: 150 µs on, 250 µs off.
  • Can handle small avalanche currents (0.9 mA).
  • Isolation test voltage up to 5300 VRMS.
  • Works in temperatures from -40 °C to +125 °C.
  • RoHS-compliant, halogen-free, and eco-friendly (Vishay Green).

The solid-state relay enhances reliability with high repetitive isolation voltage, a mold material with a comparative tracking index (CTI) of 600, and AEC-Q102 qualification for automotive use. By combining compact packaging, high-voltage isolation, and fast switching, this relay helps you build safer, more reliable high-voltage systems without compromising performance or compliance.

Nidhi Agarwal
Nidhi Agarwal
Nidhi Agarwal is a Senior Technology Journalist at EFY with a deep interest in embedded systems, development boards and IoT cloud solutions.

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