High Current, Solid State Relay (Photo MOSFET), 60V/1.0A/0.5ohm

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The ASSR-15XX Solid State Relay series is specifically designed for high current applications, commonly found in the industrial applications.

The ASSR-15XX Series consist 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 3mA through the input LED. The relay turns off (contact opens) with an input voltage of 0.8V or less.

The single channel configurations, ASSR-1510 and ASSR-1511, are equivalent to 1 Form A Electromechanical Relays (EMR), and the dual channel configuration, ASSR-1520, is equivalent to 2 Form A EMR. They are available in 4-pin SO, 6-pin DIP, 8-pin DIP and Gull Wing Surface Mount for DIP packages. Their electrical and switching characteristics are specified over the temperature range of -40°C to 85°C.

ASSR-1511 enables AC/DC and DC-only output connections. For DC-only connection, the output current, Io, increases to 2A and the on-resistance, R(ON) reduces to 0.25Ω.


  • Compact Solid-State Bi-directional Signal Switch
  • Single and Dual Channel Normally-off Single-Pole-Single-Throw (SPST) Relay
  • 60V Output Withstand Voltage
  • 1.0A or 2.0A Current Rating (See Schematic for ASSR-1511 Connections A & B)
  • Low Input Current: CMOS Compatibility
  • Low On-Resistance: 0.175Ω Typical for DC-only, 0.35Ω Typical for AC/DC
  • Very High Output Off-state Impedance: 10 Teraohms Typical
  • High Speed Switching: 0.1ms (Ton), 0.02ms (Toff) Typical
  • High Transient Immunity: >1kV/µs
  • High Input-to-Output Insulation Voltage
  • (Safety and Regulatory Approvals Pending)
    - 3750 Vrms for 1 min per UL1577
    - CSA Component Acceptance

    ASSR-1510 Options available are:
    503E = Tape and Reel Packaging Option
    XX3E = Lead-Free Option

    ASSR-1511 Options available are:
    301E = Gull Wing Option
    501E = Tape and Reel Packaging Option
    XX1E = Lead-Free Option

    ASSR-1520 Options available are:
    302E = Gull Wing Option
    502E = Tape and Reel Packaging Option
    XX2E = Lead-Free Option


  • Industrial Controls
  •  Factory Automation
  • Data Acquisition System
  • Measuring Instrument
  • Medical System
  • Security System
  • EMR / Reed Relay Replacement

Lifecycle Status


Substance Compliance

  • RoHS6
    Fully Compliant
Specification Value
Lifecycle Active
Distrib. Inventory Yes
RoHS6 Compliant Y
On-resistance (ohm) 0.5
Output Off-State Leakage (nA) 100
Output Load Current (A) 1.0
Output Withstand Voltage (V) 60
Package 300mil DIP
Turn Off Time (msec) 0.2
Turn On Time (msec) 1.0
UL Insulation Rating Viso (VRMS) 3750.0
Application Note5 i
Brochures1 i
Data Sheet1 i
Options Data Sheet6 i
Photocard1 i
Product Change Notice (PCN)3 i
Regulatory Certificate1 i
Selection Guide1 i
White Papers2 i
FAQs1 i
Promotional Material1 i


High Current, Solid State Relay (Photo MOSFET), 60V/1.0A/0.5ohm


High Current, Solid State Relay (Photo MOSFET), 60V/1.0A/0.5ohm