ISP825

Overview

The ISP825 is a high-density mounting photodarlington optically coupled isolator manufactured by Isocom Components. It integrates an infrared emitting diode with an NPN silicon photodarlington output in a space-efficient dual in line plastic package. The device provides a minimum current transfer ratio of 600% and supports an isolation voltage of 5.3kVRMS with a peak rating of 7.5kVPK. All electrical parameters are 100% tested to ensure reliability. Custom electrical selections are available for specific application requirements.

Feature Summary

• Integrates an infrared LED with an NPN silicon photodarlington output for high gain signal transmission
• Offers high isolation voltage capability suitable for separating systems of different potentials
• Ensures parameter consistency through 100% electrical testing of all units

Applications

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

Procurement Notes

Verify the specific lead frame configuration required for your assembly process, as the datasheet indicates options for standard lead spread or surface mount variants identified by suffixes. Confirm that the photodarlington output characteristics align with your interface circuit requirements before finalizing the order. Ensure compliance with relevant safety approvals such as UL recognition and VDE standards for your target market.

Selection Notes

Select this component when high current transfer ratio is necessary to drive loads directly without additional amplification stages. The photodarlington architecture provides superior sensitivity compared to standard phototransistor outputs. Consider the physical package dimensions and lead form options to match your PCB layout constraints. Verify thermal management needs as the device operates within a specified temperature range.

Part Context

The ISP825 belongs to the ISP8xx series of high-density mounting optically coupled isolators from Isocom Components. This series is designed for applications requiring robust electrical isolation in compact spaces. The product line includes various configurations to accommodate different mounting styles and electrical specifications, maintaining consistent quality standards across the family.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation. Cross-reference with other photodarlington optocouplers only if pinout and electrical parameters match exactly.