CNX39USD

Transistor, Photovoltaic Output Optoisolators Overview

The CNX39USD is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor with a base terminal for improved switching performance and high isolation capability. The device provides 5300 Vrms insulation voltage between input and output circuits. Key electrical parameters include a maximum collector-emitter voltage of 30 V, a collector current of 100 mA, and a forward current of 100 mA. The typical rise and fall times are 20 µs each. It operates within a temperature range of -40°C to +100°C and is housed in a 6-SMD,鸥翼型 (gull-wing) package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High isolation voltage of 5300 Vrms for robust circuit protection
• Integrated base terminal on the NPN phototransistor for enhanced speed control
• Wide operating temperature range suitable for industrial environments

Transistor, Photovoltaic Output Optoisolators Applications

• General-purpose signal isolation in industrial control systems
• Power supply feedback loops requiring high isolation
• Microcontroller interface circuits for noise immunity

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify component authenticity through authorized onsemi distributors or certified suppliers. Confirm the specific suffix USD corresponds to the SMD gull-wing package variant. Check for RoHS compliance documentation as required by regional regulations. Ensure storage conditions adhere to moisture sensitivity levels specified in the datasheet to maintain reliability before soldering.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high isolation voltage and moderate switching speed are required in a surface-mount form factor. The integrated base allows for faster turn-off times compared to standard phototransistors without base connections. Consider thermal dissipation limits of 200 mW during design. Verify that the 30 V collector-emitter voltage rating meets the load requirements of the target application circuit.

Transistor, Photovoltaic Output Optoisolators Part Context

The CNX39USD belongs to the CNX series of optocouplers from onsemi, designed for general-purpose isolation applications. It complements other variants like the CNX39U (DIP package) by offering a surface-mount solution. This series emphasizes reliability and high dielectric strength, making it suitable for replacing older DIP-based designs in modern PCB layouts where space efficiency is critical.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

The CNX39U is a pin-compatible alternative available in a 6-DIP package. When substituting, ensure the package type change does not affect board layout constraints. Verify that the electrical characteristics, particularly isolation voltage and current transfer ratio, remain compatible with the existing circuit design requirements.