The ASSR-5211 Solid State Relay (SSR) is specifically designed for high current applications, commonly found in the industrial equipments.The relay is a solid-state replacement for single-pole, normally-open, (1 Form A) electromechanical relays.The ASSR-5211 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 ASSR-5211 connection A, as shown in the schematic, allows the relay to switch either ac or dc loads. The connection B, with its advantages of reduced on-resistance and higher output current, allows the relays to switch dc loads only.The electrical and switching characteristics are specified over the temperature range of -40°C to +85°C.
Feature
- Compact Solid-State Bi-directional Signal Switch
- Single Channel Normally-off
- Single-Pole-Single-Throw (SPST) Relay
- 600V Output Withstand Voltage
- 0.2A or 0.4A Current Rating
- Low On-Resistance: 4Ω Typical for DC-only, 16Ω Typical for AC/DC
- High Speed Switching: 0.7ms (Ton), 0.07ms (Toff) Typical
- High Transient Immunity: >1kV/μs
- High Input-to-Output Insulation Voltage (Safety and Regulatory Approvals)
- 3750 Vrms for 1 min per UL1577
- CSA Component Acceptance
Applications
- Industrial Controls
- Factory Automation
- Data Acquisition
- Measuring Instrument
- Medical System
- Security System
- EMR / Reed Relay Replacement
