FODM3011R4

Triac, SCR Output Optoisolators Overview

The FODM3011R4 is a random-phase triac driver output optocoupler manufactured by Fairchild Semiconductor. It features a gallium arsenide infrared LED coupled to a triac output device, providing electrical isolation for triggering thyristors and triacs in AC power control applications. The component operates with a peak blocking voltage of 250 V and offers an isolation voltage rating of 3750 Vrms. It is housed in a 4-SMD Mini-flat package designed for surface mount technology. Key electrical parameters include a typical forward voltage of 1.2 V and a maximum DC forward current of 60 mA. The device supports an operating temperature range from -40°C to 100°C.

Triac, SCR Output Optoisolators Feature Summary

• Provides galvanic isolation between low-voltage control circuits and high-voltage AC loads using an infrared LED and triac output structure.
• Designed specifically for random-phase triac driving applications, ensuring reliable triggering across the full AC line cycle.
• Utilizes a compact 4-SMD Mini-flat package suitable for automated surface mount assembly processes.

Triac, SCR Output Optoisolators Applications

• Solid-state relay (SSR) input stages
• AC motor speed control circuits
• Lighting dimmer switch implementations

Triac, SCR Output Optoisolators Procurement Notes

Verify that the received components match the exact part number FODM3011R4 and confirm the manufacturer origin as Fairchild Semiconductor or onsemi. Ensure the package type corresponds to the 4-SMD Mini-flat configuration. Check for physical damage to the leads and verify that the marking on the device body aligns with official documentation standards. Confirm compliance with RoHS directives if required by the specific project specifications.

Triac, SCR Output Optoisolators Selection Notes

Select this component when random-phase triggering capability is required for AC load control. The 3750 Vrms isolation rating makes it suitable for applications requiring robust safety separation between control and power sections. Consider the 4-SMD footprint for space-constrained PCB designs. Ensure the drive circuit can supply the necessary forward current without exceeding the 60 mA maximum limit while maintaining adequate gate trigger current for the connected triac.

Triac, SCR Output Optoisolators Part Context

This optocoupler belongs to the family of thyristor and triac driver outputs designed for industrial and consumer AC power management. It serves as a critical interface element, allowing microcontrollers or logic circuits to safely control high-power AC devices. The random-phase characteristic distinguishes it from zero-crossing variants, offering flexibility in phase-angle control applications where precise timing relative to the AC waveform is necessary.

Triac, SCR Output Optoisolators Replacement Considerations

Cross-reference with other Fairchild or onsemi triac output optocouplers featuring similar isolation voltages and SMD packaging. Verify that any substitute component supports random-phase operation and matches the 4-SMD Mini-flat mechanical dimensions. Ensure the replacement maintains equivalent electrical characteristics regarding forward current and peak blocking voltage to guarantee system reliability.