PS2505-4SMT&R

Overview

The PS2505-4SMT&R is a surface-mount optically coupled isolator manufactured by Isocom Components. It features two infrared light-emitting diodes connected in inverse parallel for AC or polarity-insensitive input, paired with NPN silicon phototransistors. The device provides high isolation voltage of 5.3 kVrms and 7.5 kV peak. Key electrical parameters include a maximum forward voltage of 1.4 V, maximum input current of 50 mA, typical rise time of 4 µs, and typical fall time of 3 µs. The minimum current transfer ratio is 80%, with a maximum of 6%. It operates within a temperature range of -30°C to 100°C.

Feature Summary

• Features dual infrared LEDs in inverse parallel configuration for AC input compatibility
• Provides high electrical isolation between input and output circuits
• Includes NPN silicon phototransistor output for signal transmission
• Manufactured with 100% tested electrical parameters

Applications

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

Procurement Notes

Verify the specific suffix SMT&R confirms the tape-and-reel packaging format required for automated assembly processes. Confirm that the component meets all necessary regional safety certifications such as UL recognition before integration into final equipment designs. Ensure the surface-mount package dimensions align with the printed circuit board layout specifications.

Selection Notes

Select this component when AC input capability or polarity insensitivity is required in a compact surface-mount form factor. The dual LED input structure distinguishes it from single-LED variants suitable only for DC applications. Consider the 5.3 kVrms isolation rating for applications requiring robust galvanic separation between low-voltage control logic and higher-potential signal lines.

Part Context

This part belongs to the PS2505 series of high-density optocouplers designed for space-efficient applications. The series includes variants with different channel counts and lead spread options. The SMT&R designation indicates a specific surface-mount packaging variant optimized for high-volume manufacturing environments compared to standard through-hole DIP packages.

Replacement Considerations

Compatible substitutes include PS2505-4SM for surface mount or PS2505-4G for 10mm lead spread configurations. Cross-brand equivalents may be considered if they match the 5.3 kVrms isolation and CTR specifications.