4N38SM

Transistor, Photovoltaic Output Optoisolators Overview

The Isocom Components 2004 LTD 4N38SM is a surface-mount optocoupler featuring one channel with an NPN silicon phototransistor output and base terminal. It operates within a temperature range of -55°C to 100°C and complies with RoHS3 standards. Key electrical parameters include a maximum forward voltage of 1.65V, a typical rise time of 2µs, and a typical fall time of 11µs. The device supports a maximum input current of 60mA and offers an isolation voltage of 5.3 kVrms. Current transfer ratios range from a minimum of 40% to a maximum of 80%, with an output voltage capability up to 80V.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates an infrared emitting diode with an NPN silicon phototransistor for signal transmission
• Includes a base terminal on the phototransistor to enhance switching speed and linearity
• Provides high-voltage isolation between input and output circuits
• Designed for surface-mount assembly in compact electronic applications

Transistor, Photovoltaic Output Optoisolators Applications

• Signal isolation in digital communication interfaces
• Switching power supply feedback loops
• Microcontroller input/output isolation
• Industrial control system signal conditioning

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix (SM) confirms the surface-mount package type and pin configuration against the official datasheet. Ensure the component meets the required isolation voltage rating of 5.3 kVrms for your circuit design. Confirm compliance with RoHS3 environmental standards if applicable to your manufacturing requirements. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a surface-mount solution is required for single-channel isolation with a phototransistor output. The inclusion of a base terminal allows for improved performance in high-speed or linear applications compared to standard versions without a base. Consider the 5.3 kVrms isolation rating and the operating temperature range of -55°C to 100°C to ensure suitability for the intended environment. Verify that the 6-pin SMD footprint fits the PCB layout constraints.

Transistor, Photovoltaic Output Optoisolators Part Context

The 4N38SM belongs to the broader family of 4N38 series optocouplers manufactured by Isocom Components 2004 LTD. This series is known for providing reliable galvanic isolation using infrared technology. The SM variant specifically denotes the surface-mount DIP package, distinguishing it from through-hole equivalents. Isocom has a long history in producing such optoelectronic devices, originally stemming from Litronix assets.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult official cross-reference guides or contact the manufacturer directly for verified alternatives.