ISP321-4BL

Transistor, Photovoltaic Output Optoisolators Overview

The ISP321-4BL is a quad-channel optoisolator manufactured by Isocom Components 2004 LTD. It features a 16-pin DIP package and provides galvanic isolation between input and output circuits. The device utilizes infrared light emitting diodes coupled with NPN silicon phototransistors to transmit signals across an insulation barrier. Key electrical specifications include a 5300Vrms insulation voltage rating and a current transfer ratio ranging from 200% to 600% at a forward current of 1mA.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Quad-channel configuration for multi-signal isolation
• High-density mounting in a 16-pin DIP package
• Galvanic isolation via infrared LED and NPN phototransistor coupling

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial control systems requiring signal isolation
• Data communication interfaces needing noise immunity
• Power supply feedback loops for safety isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix BL against official datasheets to confirm pinout and packaging details, as variations may exist within the ISP321 family. Ensure compatibility with required insulation voltage ratings for the target application environment. Cross-reference manufacturer documentation to validate component authenticity and performance specifications before integration into design projects.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high channel density is required in a through-hole DIP format. The 5300Vrms isolation rating suits applications demanding robust noise rejection. Verify that the transistor output type aligns with downstream logic requirements. Consider thermal management and PCB layout constraints associated with the 16-pin footprint during circuit design.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the ISP321 series of high-density mounting phototransistor optically coupled isolators. The series includes variants such as ISP321-1, ISP321-2, and ISP321-4, differing primarily in channel count. Isocom Components manufactures these devices using standard infrared LED and NPN silicon phototransistor technology for reliable signal transmission.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Equivalent parts include ISP321-4XSMT&R and ISP321-4XSM. Verify pin compatibility and insulation voltage ratings when substituting. Ensure the replacement maintains the same transistor output type and channel count for functional parity.