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The M221-L is a bidirectional, single-pole, single-throw, normally open in a multi-purpose miniature solid-state relay pin small form factor package. It is used to replace electromechanical relays in general-purpose switching applications. The relay consists of an integrated driver circuit, two robust source-to-source-enhanced DMOS transistors – opto-coupled to a light-emitting diode. The protection and freewheeling diodes of the output MOS transistors can handle up to 5A of inrush current, making them ideal for switching light relays and highly inductive loads. Features Current Limit (Overcurrent Protection) Ultra-Small 4-Pin Small Form Factor Package Maximum Continuous Load Current of 140mA 30 ohms Maximum On-Resistance Low Input Control Power Consumption High Input-to-Output Isolation (1.5kV min) RoHS Compliant / Lead-Free/REACH Compliant Applications Telecom Switching Prompt/Loop Control Modules for PCMCIA Multiplexers Meter Reading Systems Data Acquisition Medical Devices Battery Monitoring Home/Safety & Assurance Systems
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