CNX39U3SD

Transistor, Photovoltaic Output Optoisolators Overview

The CNX39U3SD is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor with a base terminal for improved switching performance. The device provides high isolation voltage of 5300 Vrms and operates within a temperature range of -40°C to +100°C. Key electrical parameters include a maximum collector-emitter voltage of 30 V, a forward current of 100 mA, and a current transfer ratio of 100% at 10 mA input. It is housed in a compact SMD-DIP-6 package suitable for surface mount applications.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High isolation voltage capability for safe signal transmission between isolated circuits
• Integrated base terminal on the phototransistor output for enhanced switching speed control
• Compact surface mount packaging designed for automated assembly processes

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial automation control systems requiring galvanic isolation
• Power supply feedback loops for voltage regulation
• Signal interfacing between microcontrollers and high-voltage loads

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify component authenticity through authorized distributors as this part is marked obsolete. Confirm RoHS compliance status via official datasheets before integration. Check for process change notifications that may affect pinout or material composition. Ensure storage conditions meet moisture sensitivity level requirements to prevent package damage during soldering.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high isolation voltage and fast switching are required in a small footprint. The integrated base allows for better control over saturation and storage time compared to standard phototransistors. Consider thermal dissipation limits of 200 mW in dense PCB layouts. Verify compatibility with existing drive circuitry for the 1.5 V forward voltage drop.

Transistor, Photovoltaic Output Optoisolators Part Context

This device belongs to the CNX series of optocouplers from onsemi, designed for general-purpose isolation applications. The series emphasizes reliability and compact form factors for modern electronic designs. The CNX39U3SD specifically targets applications needing robust signal transfer across potential differences.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. The component status is listed as obsolete. Designers should consult manufacturer recommendations for direct replacements or evaluate alternative optocouplers with similar pinouts and electrical characteristics.