4N37S-TA

Transistor, Photovoltaic Output Optoisolators Overview

The 4N37S-TA is a surface-mount optoisolator manufactured by Lite-On Inc., featuring a single channel with a phototransistor output that includes a base terminal. It provides an isolation voltage of 1500Vrms and supports a maximum collector-emitter voltage of 30V. The device operates within a temperature range of -55°C to 100°C and utilizes a 6-SMD package. Key electrical characteristics include a typical forward voltage of 1.2V, a maximum DC forward current of 60mA, and a minimum current transfer ratio of 100% at 10mA input.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates a phototransistor output with an accessible base terminal for improved switching control and speed.
• Provides reliable signal coupling between input and output circuits while maintaining high isolation voltage.
• Designed for surface-mount assembly in compact electronic applications.

Transistor, Photovoltaic Output Optoisolators Applications

• Signal isolation in industrial control systems
• Switching applications requiring base-controlled transistor output
• Coupling between low-voltage logic circuits and higher-voltage loads

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix TA1 versus TA against official datasheets, as packaging or minor electrical tolerances may differ. Confirm RoHS compliance status and moisture sensitivity level (MSL) requirements for your manufacturing process. Ensure the supplier provides valid traceability documentation matching the Lite-On Inc. manufacturer part number.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a base terminal on the phototransistor is required for faster switching or linear operation compared to standard variants. Compare the 1500Vrms isolation rating against system safety requirements. Consider the 6-SMD footprint constraints and verify thermal performance within the specified -55°C to 100°C operating range for your application environment.

Transistor, Photovoltaic Output Optoisolators Part Context

This device belongs to the LTV-4N35/4N37 series from Lite-On Inc., which are widely used general-purpose optocouplers. The 'S' designation indicates a surface-mount package, while 'TA' typically refers to the specific tape-and-reel packaging configuration. It is functionally similar to other industry-standard 4N35/4N37 equivalents but offers specific packaging and base-terminal availability.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Publicly confirmed substitute part numbers include 4N35SM and 4N35SR2M from onsemi, which are listed as similar alternatives. Verify pinout compatibility and electrical parameters such as CTR and isolation voltage before substitution.