ASSR-1218-503E Relays

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1. Description

The ASSR-1218-503E 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-1218-503E 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.

2. Features

    1. Compact Solid-State Bi-directional Signal Switch

    2. Single and Dual Channel Normally-off Single-PoleSingle-Throw (SPST) Relay

    3. 60V Output Withstand Voltage

    4. 0.2A or 0.4A Current Rating

    5. Low Input Current: CMOS Compatibility

    6. Low On-Resistance: 0.25Ω Typical for DC-only, 1Ω Typical for AC/DC

    7. High Input-to-Output Insulation Voltage

        - 3750 Vrms for 1 min per UL1577

        - CSA Component Acceptance

3. Applications

    1. Telecommunication Switching

    2. Data Communications

    3. Industrial Controls

    4. Medical

    5. Security

    6. EMR / Reed Relay Replacement