CNW139

Transistor, Photovoltaic Output Optoisolators Overview

The CNW139 is a transistor output optocoupler manufactured by onsemi, designed for electrical isolation in electronic circuits. It features a Darlington phototransistor output configuration housed in an 8-pin PDIP package. The device provides high voltage isolation capabilities, rated at 1000Vrms between the input and output sections. This component facilitates signal transmission across isolated barriers while maintaining system safety and noise immunity.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates a Darlington phototransistor output for high current transfer ratio performance
• Provides robust electrical isolation with a 1000Vrms rating between input and output channels
• Configured as a single-channel device suitable for compact circuit layouts

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial control systems requiring galvanic isolation
• Power supply feedback loops for signal monitoring
• Microcontroller interface circuits for noise reduction

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific datasheet revision and ordering suffix when sourcing components to ensure compatibility with required insulation standards and package variations. Confirm that the supplier provides traceable documentation matching the CNW139 part number. Check for any regional availability constraints or alternative package options if standard DIP-8 inventory is limited. Ensure compliance with RoHS directives if applicable to the target assembly requirements.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high isolation voltage and reliable digital switching are required in space-constrained designs. The Darlington output structure offers enhanced sensitivity compared to standard phototransistors, making it suitable for driving logic inputs directly. Consider thermal management and PCB layout guidelines for DIP-8 packages to maintain isolation integrity during operation.

Transistor, Photovoltaic Output Optoisolators Part Context

The CNW139 belongs to onsemi's portfolio of discrete semiconductor devices, specifically within the optoisolator category. It serves as a critical interface element in power electronics and industrial automation, bridging low-voltage control circuits with high-voltage power stages. Its design supports long-term reliability in demanding environments typical of modern electronic infrastructure.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Consult official cross-reference lists for direct pin-compatible alternatives. Verify that substitute parts meet identical isolation voltage ratings and output current specifications before integration into existing designs.

Transistor, Photovoltaic Output Optoisolators FAQ

What is the maximum isolation voltage rating for the CNW139?

The CNW139 is rated for 1000Vrms isolation voltage between its input LED and output Darlington phototransistor.

What type of output configuration does the CNW139 utilize?

It utilizes a Darlington phototransistor output configuration, which provides higher current gain compared to standard single-transistor outputs.