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S742-X
1 Form A Solid State Relay DESCRIPTION
The S742-X is a bi-directional, single-pole, single-throw, normally open multipurpose relay. The circuit is composed of one LED on the input side which activates an optically coupled IC on the output - controlling the firing angle of two back-to-back SCRs. This circuit assures no false triggering under most adverse conditions, and a tight zero-volt window not exceeding 5V. A 300-ohm input resistor in series with the LED is also p.
1 Form A Solid State Relay
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S742-X
1 Form A Solid State Relay DESCRIPTION
The S742-X is a bi-directional, single-pole, single-throw, normally open multipurpose relay. The circuit is composed of one LED on the input side which activates an optically coupled IC on the output - controlling the firing angle of two back-to-back SCRs. This circuit assures no false triggering under most adverse conditions, and a tight zero-volt window not exceeding 5V. A 300-ohm input resistor in series with the LED is also provided in this circuit.
FEATURES
APPLICATIONS
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Inverse parallel SCR output High transient immunity 600V blocking voltage 1.2A maximum continuous current Low input control current High input-to-output isolation Solid state reliability Zero-volt switching 300 ohm input resistor
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Programmable controls Valve control Solenoids Remote switching Home appliances Metering equipment Heating elements Gas pump control circuitry
OPTIONS/SUFFIXES
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MAXIMUM RATINGS
PARAMETER Storage Temperature Operating Temperature Continuous Input Current Transient Input Current Reverse Input Control Voltage Output Power Dissipation UNIT °C °C mA mA V W 6 1.2 MIN -55 -40 TYP MAX 125 85 40 400
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-H -S -TR
High Output Isolation Surface Mount Option Tape and Reel
SCHEMATIC DIAGRAM
APPROVALS
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BABT CERTIFICATE #607837: BS EN 60950, BS EN 41003, BS EN 60065 UL FILE #E90096
rev 2.0 (9/24/04)
Solid State Optronics 1.888.377.4776 www.ssousa.com
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