ISP621-1SM

Transistor, Photovoltaic Output Optoisolators Overview

The ISP621-1SM is a surface-mount optically coupled isolator manufactured by Isocom Components. It integrates an infrared LED with an NPN silicon phototransistor in a compact dual-in-line plastic package designed for high-density mounting. The device provides electrical isolation between input and output circuits, featuring a minimum current transfer ratio of 50% and a high isolation voltage rating of 5.3 kVrms. Key electrical parameters include a maximum forward voltage of 1.3 V, a typical rise time of 2 µs, and a typical fall time of 3 µs. The component is fully tested for all electrical parameters.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High density surface mount packaging for efficient board space utilization
• Optical coupling between infrared LED and NPN phototransistor
• High isolation voltage capability for circuit protection
• High current transfer ratio ensuring reliable signal transmission

Transistor, Photovoltaic Output Optoisolators Applications

• Computer terminals
• Industrial systems controllers
• Measuring instruments
• Signal transmission between systems of different potentials and impedances

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm surface mount tape-and-reel availability. Ensure the selected variant matches the required lead spread and pin count. Cross-reference manufacturer part numbers with distributor listings to confirm exact component specifications before procurement.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component for applications requiring galvanic isolation in compact designs. Consider the current transfer ratio and isolation voltage ratings relative to system requirements. Evaluate the surface mount package type for compatibility with automated assembly processes and PCB layout constraints.

Transistor, Photovoltaic Output Optoisolators Part Context

This component belongs to the TLP621 series of optically coupled isolators produced by Isocom Components. The series includes variants with one, two, or four channels, offering flexibility for different isolation needs. The ISP621-1SM specifically denotes a single-channel version optimized for surface mount technology.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Compatible substitutes include other single-channel phototransistor optocouplers with similar isolation voltages and current transfer ratios. Verify pinout compatibility and package dimensions when replacing with equivalent parts from other manufacturers.