FODB100

Overview

The FODB100 is a single-channel transistor output optocoupler from onsemi's Microcoupler series. It features a GaAsP infrared LED coupled to an NPN phototransistor in a compact four-pin BGA package. The device provides 2500 Vrms isolation voltage and operates within a temperature range of -40°C to +125°C. Key electrical specifications include a reverse voltage of 6V and power dissipation of 150 mW. This component is designed for signal isolation in industrial and consumer applications.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits
• Utilizes a compact surface-mount BGA package for space-constrained designs
• Features a wide operating temperature range suitable for harsh environments

Applications

• Industrial control systems requiring signal isolation
• Consumer electronics with low-power interface requirements
• General-purpose digital signal isolation circuits

Procurement Notes

Verify the current part status as the FODB100 is listed as obsolete by some distributors. Confirm availability through authorized channels or consider alternative components if long-term supply stability is required. Ensure the specific tape and reel packaging matches your assembly equipment specifications before finalizing procurement decisions.

Selection Notes

Select this component when a small footprint and moderate isolation voltage are prioritized over high-speed performance. The transistor output type is suitable for digital switching applications rather than linear amplification. Evaluate the thermal management requirements given the 150 mW power dissipation limit in enclosed spaces.

Part Context

Part of onsemi's Microcoupler family, which focuses on cost-effective isolation solutions. The FODB100 represents a standard discrete optocoupler design using GaAsP technology. It serves as a foundational component for basic galvanic isolation needs in legacy and new designs alike.

Replacement Considerations

Check for direct pin-compatible replacements within the same Microcoupler series. Verify that any substitute maintains the 2500 Vrms isolation rating and compatible forward voltage characteristics to ensure circuit compatibility without redesign.