The ASSR-1228 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-PoleSingle-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: 0.25Ω Typical for DC-only, 1Ω Typical for AC/DC
High Input-to-Output Insulation Voltage (Safety and Regulatory Approved)