6N138SD

Transistor, Photovoltaic Output Optoisolators Overview

The 6N138SD is a single-channel logic IC output optocoupler manufactured by onsemi. It features an AlGaAs LED optically coupled to a high-gain split darlington photodetector with a base connection. The device provides 2500 Vrms isolation and operates within a temperature range of -40 °C to 85 °C. Key electrical parameters include a maximum forward current of 0.02 A, a maximum on-state current of 0.06 A, and a typical output voltage of 7V. It utilizes surface mount installation in an 8-SMD package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High gain split darlington configuration separates input photodiode from the first stage gain to permit lower output saturation voltage and higher speed operation compared to conventional darlington phototransistor optocouplers.

Transistor, Photovoltaic Output Optoisolators Applications

• Logic signal transmission
• Isolation of control circuits
• Interface between microprocessors and power stages

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify that the specific part number matches the required surface mount package type and channel configuration. Confirm compliance with relevant safety standards such as UL recognition if isolation certification is required for the end application. Ensure the operating temperature range aligns with system thermal requirements.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when low input current and high gain are necessary for efficient signal coupling. The split darlington architecture offers performance advantages over standard phototransistor outputs. Consider the 8-SMD form factor for automated assembly processes requiring surface mount technology compatibility.

Transistor, Photovoltaic Output Optoisolators Part Context

The 6N138SD belongs to the 6N138/9 series of high-speed optocouplers. This family includes dual-channel variants like the HCPL-2730 and HCPL-2731. The series is characterized by the use of AlGaAs LEDs and split darlington photodetectors to achieve superior speed and gain characteristics compared to traditional designs.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers: 6N138SDM, HCPL-2730, HCPL-2731.