Vishay – Three new VOR family solid-state relays offer current-limit protection and high isolation


VOR family: high input-to-output isolation

Vishay Intertechnology has introduced the first three devices in its new VOR family of hybrid solid-state relays, which offer noiseless switching and provide higher reliability and a longer lifetime than traditional electro-mechanical relays.

The new 1 Form A VOR1142 relays are notable for their high input-to-output isolation, currentlimit protection and low power consumption. They are normally-open single-pole, single-throw switches. Allowing for simple customisation, the devices feature a modular construction consisting of a gallium aluminium arsenide infra-red actuation control, and MOSFETs for the switch output.

The single-channel relays are offered in three package options:

• DIP-6: VOR1142A6
• SMD-6: VOR1142B6
• SOP-4: VOR1142M4

Devices in the SMD-6 and DIP-6 packages have high isolation voltage rating of 5,300V/1 minute, while devices in the smaller SOP-4 package are rated for 3,750V/1 minute.

Electronically isolated, the VOR1142 relays offer clean, bounce-free switching over an ambient temperature range of -40°C to 100°C.

The devices are VDE and UL certified to meet the reinforced insulation requirements of most applications.


  • 22Ω on-resistance
  • 140mA load current
  • 400V load voltage
  • 0.25mA turn-on current
  • High surge capability


  • Telecoms power supplies
  • Metering equipment
  • Security equipment
  • Instrumentation
  • Industrial controls
  • Battery-management systems
  • Automatic measurement equipment