ONSEMI MOCD223-M 8-Pin SOIC Darlington Output Optocoupler, 60mA, 2.5kV

The ONSEMI MOCD223-M is a high-performance, dual-channel Darlington output optocoupler, engineered to provide reliable electrical isolation and signal transmission in compact, surface-mount designs. It integrates a gallium arsenide infrared emitting diode that is optically coupled to a monolithic silicon photodarlington detector, all housed within a small outline integrated circuit (SOIC) plastic package. This configuration is perfectly suited for modern, high-density printed circuit board (PCB) applications, as it eliminates the need for through-hole mounting, saving valuable board space and simplifying the assembly process.

A key feature of this component is its exceptionally high current transfer ratio (CTR), offering a minimum of 500% at a forward current of 1mA. This high sensitivity ensures efficient signal coupling even with low input currents, making it highly energy-efficient. The device is also designed with robustness in mind, featuring a minimum collector-emitter voltage (BVCEO) of 30V and a high isolation voltage rating of 2.5kV, which provides critical protection against voltage spikes and ensures safe operation by electrically isolating the input and output circuits.

Primary Applications

This optocoupler is ideally deployed in scenarios requiring reliable isolation and noise immunity. Its common uses include:

• Communications and Networking Equipment: Isolating signal lines in interfaces to prevent ground loops and noise transmission.
• Portable and Battery-Powered Devices: Providing efficient signal coupling with low power consumption.
• Sensing and Instrumentation Systems: Isolating sensitive measurement circuits from noisy control or power sections.

The MOCD223-M represents a dual-channel version of the popular MOC223M, effectively doubling the functionality within a similar footprint. Its surface-mountable SOIC-8 package is industry-standard, ensuring broad compat