ISP827BG

Overview

The ISP827BG is a high-density mounting phototransistor optically coupled isolator manufactured by Isocom Components. It features a dual-element configuration housed in a plastic DIP-8 package, providing 5300 Vrms isolation voltage between input and output circuits. The device utilizes NPN phototransistor outputs with a minimum collector-emitter breakdown voltage of 35 V. Key electrical characteristics include a nominal current transfer ratio of 200%, a maximum dark power supply of 100 nA, and a maximum forward current of 0.05 A. It operates within a temperature range of -55 °C to 100 °C and holds UL recognition (File No. E91231) and VDE 0884 approval.

Feature Summary

• Provides robust galvanic isolation via a 5300 Vrms dielectric barrier suitable for demanding safety standards.
• Features a high-density dual-channel architecture designed for efficient PCB space utilization.
• Delivers reliable signal transmission through NPN phototransistor outputs with high current transfer efficiency.

Applications

• Industrial control systems requiring isolated signal interfaces
• Power supply feedback loops for circuit protection
• Microprocessor communication channels with noise immunity requirements

Procurement Notes

Verify the specific lead form designation associated with the BG suffix against official Isocom documentation to ensure mechanical compatibility. Confirm that the required insulation voltage and current transfer ratio meet the target circuit specifications. Check for RoHS compliance status and appropriate packaging options such as tape and reel availability if automated assembly is intended. Ensure the operating temperature range aligns with the environmental conditions of the final application.

Selection Notes

Select this component when high isolation voltage and compact dual-channel functionality are required. Consider the 200% nominal current transfer ratio for applications needing strong output signals from low input currents. Evaluate the DIP-8 package constraints against available board space. Compare performance metrics against standard industry alternatives to confirm suitability for specific noise immunity and speed requirements.

Part Context

The ISP827BG belongs to the ISP817/ISP827/ISP847 family of high-density mounting phototransistor optically coupled isolators. This series is engineered to replace common commercial optocouplers while offering specialized parameter selections. The components are manufactured to global industry standards and provide various lead forms to accommodate different mounting preferences and circuit design needs.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.