Standard, 1 Form A, Solid State Relay (Photo MOSFET), 60V/0.2A/10Ω

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The ASSR-12XX Solid State Relay (SSR) series 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 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-1218 and ASSR-1219, are equivalent to 1 Form A Electromechanical Relays (EMR), and the dual channel configuration, ASSR-1228, 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. ASSR-1219 enables AC/DC and DC-only output connections.

For DC-only connection, the output current, Io, increases to 0.4A and the on-resistance, R(ON) reduces to 2.5Ω.


  • Compact Solid-State Bi-directional Signal Switch
  • Single and Dual Channel Normally-off Single-Pole-Single-Throw (SPST) Relay
  • 60V Output Withstand Voltage
  • 0.2A or 0.4A Current Rating (see schematic for ASSR-1219 connection A and B)
  • Low Input Current: CMOS Compatibility
  • Low On-Resistance: 0.25 Ω Typical for DC only, 1 Ω Typical for AC/DC
  • High Input-to-Output Insulation Voltage
    (Safety and Regulatory Approvals Pending)
    - 3750 Vrms for 1 min per UL1577
    - CSA Component Acceptance
  • Options available are:
    50XE = Tape and Reel Packaging Option
    XXXE = RoHS Compliant Option

ASSR-1219 & ASSR-1228
30XE = Gull Wing Option
50XE = Tape and Reel Packaging Option
XXXE = RoHS Compliant Option


  • Telecommunication Switching
  • Data Communications
  • Industrial Controls
  • Medical
  • Security
  • EMR / Reed Relay Replacement

Lifecycle Status


Substance Compliance

  • RoHS6
    Fully Compliant
Specification Value
Lifecycle Active
Distrib. Inventory Yes
RoHS6 Compliant Y
On-resistance (ohm) 10.0
Output Off-State Leakage (nA) 1000
Output Load Current (A) 0.2
Output Withstand Voltage (V) 60
Package 300mil DIP-6
Turn Off Time (msec) 5.0
Turn On Time (msec) 5.0
UL Insulation Rating Viso (VRMS) 3750.0
Application Brief1 i
Application Note5 i
Brochures1 i
Options Data Sheet6 i
Regulatory Certificate1 i
Selection Guide2 i
White Papers2 i
FAQs1 i
Promotional Material1 i