ISP827B

Overview

The ISP827B is a high-density mounting phototransistor optically coupled isolator manufactured by Isocom Components. It features a dual-channel configuration housed in a plastic DIP-8 package. The device provides a minimum isolation voltage of 5300 V and supports an operating temperature range from -55 °C to 100 °C. Key electrical parameters include a collector-emitter breakdown voltage of at least 35 V, a maximum forward current of 50 mA, and a nominal current transfer ratio of 200%. The component is lead-free, RoHS compliant, and holds UL recognition (File No. E91231) and VDE 0884 approval.

Feature Summary

• Dual-channel transistor output design for independent signal isolation
• High insulation capability with 5300 V isolation rating
• Compliant with UL and VDE safety standards for industrial applications

Applications

• General purpose digital signal isolation
• Microprocessor system interface circuits
• Solid-state relay driver circuits

Procurement Notes

Verify the specific suffix designation against official documentation to confirm lead form variations such as STD or G forms. Ensure compliance requirements match project specifications, specifically checking for UL File No. E91231 and VDE 0884 approvals. Confirm that the plastic DIP-8 package meets mechanical constraints and that the operating temperature range aligns with environmental conditions.

Selection Notes

Select this component when dual-channel isolation is required within a compact DIP-8 footprint. The high isolation voltage makes it suitable for noisy environments requiring robust galvanic separation. Consider the nominal current transfer ratio and operating temperature limits to ensure compatibility with downstream logic levels and thermal management strategies in the target application.

Part Context

This part belongs to the ISP827X series of high-density mounting phototransistor optically coupled isolators. The series includes variants like ISP817X and ISP847X, offering different channel configurations and performance characteristics while maintaining consistent packaging and safety approvals. These components are designed for reliable optical coupling in space-constrained electronic assemblies.

Replacement Considerations

Cross-reference with other dual-channel optocouplers in the same isolation class if availability is constrained. Verify pinout compatibility and electrical parameter equivalence before substitution.