100304PC

Overview

The Fairchild Semiconductor 100304PC is a high-voltage phototransistor optocoupler. It provides electrical isolation between input and output circuits using an infrared LED coupled to a phototransistor. The device supports single-ended output configuration with a supply voltage range of 0.8V to 3.6V. It is designed for surface mount installation in a compact 6-UFDFN package. The component operates within a temperature range of -40°C to 85°C, suitable for various industrial and commercial applications requiring reliable signal transmission across isolated domains.

Feature Summary

• Provides galvanic isolation via infrared coupling between input LED and output phototransistor
• Supports single-ended output configuration for straightforward interface integration
• Operates on low supply voltage ranging from 0.8V to 3.6V
• Designed for surface mount technology in a compact footprint

Applications

• Industrial control systems requiring signal isolation
• Communication interfaces needing noise immunity
• Power supply feedback loops
• Microcontroller input isolation

Procurement Notes

Verify the specific suffix and revision level against the manufacturer's current datasheet to ensure compatibility with RoHS directives and lead-free requirements. Confirm the exact package dimensions and pinout mapping before PCB layout finalization. Check for any obsolescence notices or lifecycle status updates from Fairchild Semiconductor or its successor entities prior to procurement commitment.

Selection Notes

Select this component when low-voltage operation and compact surface-mount packaging are required for isolated signal transmission. Ensure the application environment stays within the specified -40°C to 85°C operating range. Consider the single-ended output limitation if differential signaling is needed elsewhere in the system. Verify that the 0.8V to 3.6V supply range aligns with the target logic levels.

Part Context

Fairchild Semiconductor specialized in power and analog semiconductors, including optoelectronics. The 100304PC falls under their high-voltage phototransistor optocoupler category. Fairchild was acquired by onsemi, which continues to manage legacy product lines. This part represents a standard solution for cost-effective isolation in space-constrained designs.

Replacement Considerations

Consult official cross-reference guides for direct equivalents. Verify pinout compatibility and electrical characteristics such as CTR and isolation voltage before substituting.