PS2505-4SM

Overview

The PS2505-4SM is a surface-mount optically coupled isolator from the PS2505 series by Isocom Components. It features four channels of NPN silicon phototransistors paired with infrared LEDs connected in inverse parallel for AC or polarity-insensitive input. The device provides high isolation voltage of 5300Vrms and operates within a temperature range of -30°C to 100°C. It utilizes a 16-pin SOP package.

Feature Summary

• Four-channel configuration for compact signal isolation
• AC input capability due to inverse parallel LED arrangement
• High isolation voltage rating for safety compliance

Applications

• Computer terminals
• Industrial system controllers
• Telephone sets and exchanges
• Signal transmission between systems of different potentials

Procurement Notes

Verify the specific suffix SM confirms the surface mount package type against official datasheets. Confirm that the component meets required UL or VDE certifications for your application. Ensure the 16-pin SOP footprint matches your PCB design constraints before ordering.

Selection Notes

Select this part when multiple isolated channels are required in a space-constrained environment. The AC input feature simplifies circuit design for bipolar signals. Verify that the phototransistor output current and switching speed meet the target application requirements.

Part Context

This component belongs to the PS2501/PS2505 family of high-density optocouplers. These devices are designed as industry-standard replacements, offering similar pinouts and electrical characteristics to competitors while providing custom parameter options. The series supports both through-hole and surface mount configurations.

Replacement Considerations

Check for direct equivalents such as NEC PS2505-4 variants. Verify pin compatibility and isolation voltage ratings when substituting with other manufacturers' multi-channel AC input optocouplers.