PS2806-1

Overview

The PS2806-1 is a single-channel optocoupler featuring an AC-input GaAs LED and an NPN silicon Darlington phototransistor. It provides high isolation voltage of 2500 Vrms and supports AC input response. The device offers a typical current transfer ratio of 2000% at IF = ±1 mA and VCE = 2 V. It operates within a temperature range of -55°C to 100°C, with a maximum forward current of 50 mA and collector-emitter breakdown voltage of 40 V minimum.

Feature Summary

• High isolation voltage capability for safety-critical applications
• AC input response functionality for direct line sensing
• High current transfer ratio for efficient signal coupling
• Shielded SSOP package design to block ambient light interference

Applications

• AC mains detection circuits
• Industrial control systems requiring galvanic isolation
• Power supply feedback loops
• Solid-state relay driver interfaces

Procurement Notes

Verify the specific ordering suffix (e.g., F3, F4) to confirm tape-and-reel packaging requirements and lead-free compliance status. Ensure the component matches the required safety certifications such as UL or VDE recognition for your target market. Confirm pin pitch and package dimensions align with PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this component when AC input detection is required alongside high isolation voltage. The Darlington output structure provides high gain suitable for driving low-current loads directly. Consider the operating temperature range and power dissipation limits for thermal management in dense packaging environments.

Part Context

This part belongs to the NEC/CEL PS2806 series of optically coupled isolators. It utilizes a plastic SSOP package designed for high-density applications. The series includes variants like PS2806-4 for quad-channel configurations. The technology combines GaAs LEDs with silicon Darlington transistors for robust performance.

Replacement Considerations

Direct substitutes include PS2806-1-F3 and PS2806-1-F4 from compatible manufacturers. Verify pinout compatibility and electrical parameters such as CTR and isolation voltage before substitution. Ensure safety certification approvals match the original design requirements.