MOCD223M

The MOCD223M is an optocoupler from ON Semiconductor, designed to provide electrical isolation between its input and output while allowing signal transmission. This device is particularly useful in applications where it is necessary to separate different parts of a circuit to prevent high voltages from affecting low-voltage components.

Key Features:

1. Isolation Voltage: The MOCD223M typically offers a high isolation voltage, often rated at 5000 VRMS, ensuring robust protection against voltage spikes and transients.

2. Input Configuration: The input side of the optocoupler consists of an infrared LED. When current flows through the LED, it emits infrared light, which is detected by the photodetector on the output side.

3. Output Configuration: The output side features a phototransistor that is sensitive to the infrared light emitted by the LED. When the LED is activated, the phototransistor conducts, allowing current to flow through the output circuit.

4. Transfer Characteristics: The device is designed to provide a high current transfer ratio (CTR), which is the ratio of the output current to the input current. This characteristic is crucial for ensuring that the output can effectively drive subsequent stages in a circuit.

5. Package Type: The MOCD223M is typically available in a compact DIP (Dual In-line Package) form factor, which makes it suitable for various PCB layouts and space-constrained applications.

6. Temperature Range: The device is rated for operation over a wide temperature range, typically from -40°C to +100°C, making it suitable for industrial and automotive applications.

7. Applications: Common applications for the MOCD223M include signal isolation in data communication, switching power supplies, microcontroller interfacing, and in systems requiring high-voltage isolation.

8. Pin Configuration: The standard pin configuration includes an anode and cathode for the LED input, and collector and emitter pins for the phototransistor output, allowing for straightforward integration into electronic circuits.

Performance Specifications:

• Input Forward Current (IF): The typical forward current for the LED is around 10-20 mA.
• Output Collector-Emitter Voltage (VCE): The maximum voltage that can be applied across the output transistor is typically around 30 V.
• Current Transfer Ratio (CTR): The CTR can vary but is generally in the range of 50% to 600%, depending on the specific conditions and configurations.

Conclusion:

The MOCD223M from ON Semiconductor is a versatile optocoupler that provides reliable electrical isolation and signal transmission capabilities. Its robust design, high isolation voltage, and wide operating temperature range make it an excellent choice for a variety of applications in electronics, particularly where safety and signal integrity are paramount.