ISP827-3SM

Overview

The ISP827-3SM is a high-density, surface-mount transistor output optocoupler manufactured by Isocom Components. It features two independent channels within a compact DIP-8 package configuration adapted for SMD mounting. The device provides a minimum isolation voltage of 5300 Vrms between input and output circuits. It operates with a maximum forward current of 50 mA and supports a collector-emitter breakdown voltage of at least 35 V. The unit is designed for robust performance across an extended temperature range from -55 °C to 100 °C.

Feature Summary

• Dual-channel architecture providing independent signal isolation within a single package
• High dielectric isolation capability ensuring safety compliance in sensitive applications
• Surface-mount design optimized for automated assembly and space-constrained PCB layouts
• Hermetic sealing options available for high-reliability industrial environments

Applications

• Industrial control systems requiring galvanic isolation
• Signal interfacing between microprocessors and power stages
• Solid-state relay driver circuits
• Noise-immune data transmission links

Procurement Notes

Verify the specific suffix designation against official Isocom documentation to confirm lead frame material and sealing type. Ensure the selected variant matches the required insulation clearance and creepage distances for your target regulatory standard. Cross-reference the datasheet revision date to confirm parameter validity before finalizing component selection.

Selection Notes

Select this component when dual-channel isolation is required in a small footprint. Compare the CTR specifications against load requirements to ensure adequate switching margins. Verify that the thermal dissipation characteristics meet the ambient operating conditions of the final enclosure. Confirm compatibility with reflow soldering profiles if using the surface-mount variant.

Part Context

This part belongs to the ISP827 series of high-density phototransistor optocouplers. The series is characterized by its ability to provide multiple isolated channels in minimal space. It serves as a critical interface component in systems where electrical noise immunity and safety isolation are paramount. The manufacturer emphasizes reliability through rigorous testing protocols.

Replacement Considerations

Direct pin-compatible replacements may include other dual-channel transistor output optocouplers with matching isolation ratings. Verify that substitute parts meet or exceed the 5300 Vrms isolation requirement. Check for equivalent current transfer ratio ranges to maintain circuit functionality without modification.