FODM2705R2

Overview

The FODM2705R2 is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output and supports AC input applications. The device provides an isolation voltage of 3750 Vrms. Key electrical parameters include a collector-emitter saturation voltage of 300 mV maximum, a forward current of 50 mA maximum, and a forward voltage of 1.4 V typical. The current transfer ratio ranges from 50% to 300%. Rise and fall times are typically 3 µs each. The component operates within a temperature range of -40°C to +110°C and is housed in a 4-SMD surface-mount package.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits for signal transmission.
• Supports direct AC input operation without requiring external rectification components.
• Features fast switching characteristics with symmetric rise and fall times for reliable digital signaling.

Applications

• General-purpose signal isolation in industrial control systems
• AC line monitoring and detection circuits
• Solid-state relay driver interfaces

Procurement Notes

Verify the specific ordering suffix to ensure compatibility with required packaging formats such as cut tape or reel configurations. Confirm that the selected variant meets all necessary regulatory compliance standards for the target application environment. Cross-reference the manufacturer part number with official distributor catalogs to validate current availability status and lead times before finalizing procurement plans.

Selection Notes

Select this component when high isolation voltage and AC input capability are required in a compact surface-mount form factor. Ensure the circuit design accommodates the specified current transfer ratio variations and thermal dissipation limits. Verify that the operating temperature range aligns with the environmental conditions of the intended deployment scenario.

Part Context

This component belongs to the FODM2705 series of general-purpose phototransistor optocouplers. The series is designed for applications requiring robust electrical isolation and reliable signal transmission across isolated boundaries. The R2 suffix typically denotes specific packaging or handling specifications defined by the manufacturer.

Replacement Considerations

HMAA2705R2 and HMAA2705R2V are listed as potential substitutes; however, these variants are marked as obsolete or discontinued in available records. Verify functional equivalence and availability through official channels before considering substitution.