PS2505-2 Equivalent & Substitute Parts

Part Overview

The PS2505-2 is a 2-channel optoisolator with transistor output rated for 5000Vrms isolation voltage, designed for AC/DC input applications in 8-DIP Through Hole packaging. This part is classified as Obsolete, making the identification of active substitute components essential for new designs and legacy system maintenance. The PS2505-2 remains in stock (1422 pcs) but its obsolete status necessitates evaluation of functionally equivalent alternatives.

Substiute Parts

PS2505-2

CELIn Stock: 1480PS2505-2 Datasheet

Current PartRFQ

ILD620GB

Vishay Semiconductor Opto DivisionIn Stock: 2234ILD620GB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PS2505-2 is determined by the following electrical and mechanical parameters:

Required Compatibility Criteria:

• Package / Case: 8-DIP (0.300", 7.62mm) Through Hole mounting
• Number of Channels: 2
• Input Type: AC, DC
• Output Type: Transistor
• Voltage - Isolation: Equal to or greater than 5000Vrms
• Current Transfer Ratio: Minimum 80% @ 5mA or higher
• Operating Temperature Range: -55°C ~ 100°C or broader
• Voltage - Output (Max): Equal to or greater than 50V (for typical applications using 50V or less)
• Current - Output / Channel: Equal to or greater than 50mA

The ILD620GB meets all compatibility criteria and qualifies as a direct substitute for the PS2505-2.

Parameter Comparison

Engineering Selection Recommendations

PS2505-2 to ILD620GB Substitution:

The ILD620GB is a qualified substitute for the PS2505-2 in applications where the Voltage - Output (Max) requirement does not exceed 70V. The substitution is supported by matching pin count, package footprint, channel configuration, and operating temperature range.

Advantages of ILD620GB:

• Active product status with ongoing manufacturer support
• ROHS3 compliance versus non-compliance of PS2505-2
• Higher isolation voltage rating (5300Vrms vs. 5000Vrms)
• Superior minimum current transfer ratio (100% vs. 80% @ 5mA)
• REACH unaffected status

Design Constraint: Applications requiring output voltages above 70V must retain the PS2505-2 or evaluate alternative optoisolators with higher voltage ratings. The 10V difference in maximum output voltage may be significant in certain high-voltage isolation topologies.

Packaging Consideration: The ILD620GB is supplied in Tube packaging, whereas PS2505-2 supply method was not specified. Confirm packaging requirements for procurement and assembly processes.

Frequently Asked Questions (FAQ)

Q: Are the PS2505-2 and ILD620GB pin-compatible? A: Both devices use 8-DIP (0.300", 7.62mm) Through Hole packages with identical form factors. Pin-level compatibility must be verified against specific datasheets, as this information was not provided in the technical parameters.

Q: What is the impact of the 10V difference in maximum output voltage? A: The PS2505-2 supports up to 80V output while the ILD620GB supports 70V. If your application requires isolation of signals or supplies exceeding 70V at the optoisolator output, the PS2505-2 is the appropriate choice. For applications using 70V or below, this difference is not a constraint.

Q: Why does the ILD620GB have a longer rise time (20µs vs. 3µs)? A: The rise time specification reflects differing device characteristics between manufacturers. The ILD620GB's 2µs fall time is faster than the PS2505-2's 5µs fall time. Applications with specific timing requirements should evaluate both rise and fall time specifications against circuit requirements.

Q: Is the ILD620GB suitable for my existing PS2505-2 design? A: The ILD620GB is a direct pin-compatible substitute in applications where output voltage does not exceed 70V. It provides enhanced isolation voltage, improved compliance certifications, and active manufacturer support. If your design operates within these parameters, substitution is supported.

Q: What does "Current Transfer Ratio" mean for optoisolator selection? A: Current Transfer Ratio (CTR) indicates the efficiency of signal coupling from the input LED to the output transistor. A minimum of 80% at 5mA input (PS2505-2) or 100% at 5mA (ILD620GB) ensures reliable signal transmission. Higher CTR provides design margin for lower input drive requirements.

Q: Are there RoHS compliance implications for PS2505-2 to ILD620GB migration? A: The PS2505-2 is RoHS non-compliant while ILD620GB is ROHS3 compliant. New designs and RoHS-restricted applications must use ILD620GB or equivalent compliant components. Legacy systems using PS2505-2 should evaluate compliance requirements for planned product lifecycles.