Industrial Photo MOSFET

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The ASSR-601J is a high-voltage solid state relay that is designed for high-voltage industrial applications. The ASSR-601J consists of an AlGaAs infrared light-emitting diode (LED) input stage optically coupled to a high-voltage output detector circuit. The detector consists of a high-speed photovoltaic diode array and driver circuitry to switch on/off two discrete high voltage MOSFETs. The relay turns on (contact closes) with a minimum input current of 10mA through the input LED. The relay turns off (contact opens) with an input voltage of 0.4V or less.

The ASSR-601J is equivalent to 1 Form A Electromechanical Relays (EMR) and is available in 16-pin SOIC package.

Leveraging Broadcom’s galvanic isolation optocoupler technology, the ASSR-601J provides reinforced insulation and reliability that delivers safe signal isolation critical in high temperature industrial applications.



  • Compact Solid-State Bi-directional Signal Switch
  • Operating temperature range: -40°C to 110°C
  • Breakdown Voltage, VO(OFF) : 1500V @ IO=0.25mA
  • Avalanche rated MOSFETs
  • Output Leakage Current, IO < 1mA @ VO=1000V
  • On-resistance, RON < 250 Ohms @ IO =50mA 
  • Turn On Time: TON < 4ms
  • Turn Off Time: TOFF < 0.5ms
  • Package: 300mil SO-16
  • Creepage & Clearance >= 8mm (input-output)
  • Creepage > 5mm (between drain pins of MOSFETs)
  • Safety and Regulatory Approvals :
    • IEC/EN/DIN EN  60747-5-5
      Maximum Working Insulation Voltage 1414VPEAK
    • 5000 VRMS for 1 minute per UL1577
    • CSA Component Acceptance



  • Solar Photovoltaic Panel Ground Fault Monitoring
  • Battery Management System (BMS) 
  • Motor Winding applications
  • Inrush Current Limiter Protection
  • Electro Mechanical Relay Replacement

Lifecycle Status


Substance Compliance

  • RoHS6
    Fully Compliant
Specification Value
Lifecycle Active
Distrib. Inventory No
IEC Maximum Working Insulation Voltage Viorm (VPEAK) 1414.0
RoHS6 Compliant Y
On-resistance (ohm) 250.0
Output Off-State Leakage (nA) 1000
Output Load Current (A) 0.05
Output Withstand Voltage (V) 1500
Package SO16
Turn Off Time (msec) 0.5
Turn On Time (msec) 4.0
UL Insulation Rating Viso (VRMS) 5000.0
Data Sheet1 i
Product Brief1 i
Reliability Data Sheet2 i
FAQs1 i
Application Note1 i
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