CNX39UW

Transistor, Photovoltaic Output Optoisolators Overview

The CNX39UW is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor with a base terminal for improved switching performance and isolation reliability. The device provides a high isolation voltage of 5300 Vrms, suitable for demanding industrial applications. Key electrical parameters include a maximum collector-emitter voltage (Vceo) of 30 V, a maximum collector current (Ic) of 100 mA, and a forward current (If) rating of 100 mA. The typical current transfer ratio (CTR) ranges from 60% to 100% at an input current of 10 mA. Switching characteristics include a typical turn-on time (ton) and turn-off time (toff) of 20 µs each. The unit operates within a temperature range of -40°C to +100°C and is housed in a 6-DIP package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrated base terminal on the NPN phototransistor enhances switching speed and reduces storage time compared to standard configurations.
• High insulation voltage capability of 5300 Vrms ensures robust signal isolation between input and output circuits.
• Wide operating temperature range supports functionality in harsh industrial environments.

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial automation control systems requiring galvanic isolation
• Power supply feedback loops for voltage regulation
• Microcontroller interface circuits for noise immunity

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lot traceability and RoHS compliance status prior to integration. Check for obsolescence notices as this part may be subject to lifecycle changes. Ensure packaging integrity matches design requirements for surface mount or through-hole assembly processes.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high isolation voltage and fast switching are required in a single-channel configuration. The integrated base allows for faster discharge of the collector-base capacitance, improving response time. Compare CTR specifications against load requirements to ensure sufficient drive capability. Consider thermal management within the specified operating temperature range during circuit design.

Transistor, Photovoltaic Output Optoisolators Part Context

This device belongs to the CNX series of optocouplers designed for general-purpose isolation applications. It complements other single-channel variants offering different isolation ratings or output types. The series emphasizes reliability and compact form factors for modern electronic designs.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes include CNX39U and CNX82A300W, which share similar pinouts and functional characteristics. Verify pin compatibility and electrical parameter margins before substitution.

Transistor, Photovoltaic Output Optoisolators FAQ

What is the purpose of the base terminal on the phototransistor?

The base terminal allows for external connection to accelerate the discharge of stored charge carriers, significantly reducing turn-off time and improving overall switching speed.

What is the typical switching time for this optocoupler?

The typical turn-on time (ton) and turn-off time (toff) are both 20 microseconds.