CNX38U

Transistor, Photovoltaic Output Optoisolators Overview

The onsemi CNX38U is a single-channel transistor output optocoupler featuring a base-connected phototransistor. It provides high isolation with a rated voltage of 5300Vrms and supports a maximum collector-emitter voltage of 80V. The device operates with a DC input and delivers an output current of up to 100mA. Key electrical parameters include a typical forward voltage of 1.15V, a maximum DC forward current of 100mA, and a saturation voltage of 400mV. The current transfer ratio ranges from 70% to 210% at 10mA input. Switching times are typically 20µs for both turn-on and turn-off. It functions within a temperature range of -40°C to 100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High-voltage insulation capability of 5300Vrms for robust signal isolation
• Integrated base connection on the phototransistor for enhanced switching control
• Surface-mount SMD-DIP-6 package design for compact circuit integration

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial automation control systems
• Power supply feedback loops
• Signal isolation in communication interfaces

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify component authenticity through authorized distributors as this part may be obsolete. Confirm lot dates and storage conditions due to potential end-of-life status. Ensure replacement parts like CNY173SR2M meet specific pinout and electrical requirements before integration into existing designs.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high isolation voltage and fast switching are required in a small footprint. The base-connected transistor allows for improved noise immunity and faster turn-off times compared to standard phototransistors. Verify that the 80V collector-emitter voltage rating suits the load requirements of the application circuit.

Transistor, Photovoltaic Output Optoisolators Part Context

The CNX38U belongs to the CNX38 family of optocouplers from onsemi, designed for general-purpose isolation applications. It is part of a series that includes variants with different packaging or electrical characteristics. This specific model utilizes a surface-mount configuration suitable for automated assembly processes in modern electronic manufacturing.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

The CNY173SR2M is listed as a similar available substitute. Verify pin compatibility and electrical specifications such as CTR and isolation voltage before substitution.