PS2581L2-D-A Optoisolator - Equivalent & Substitute Parts

Part Overview

The PS2581L2-D-A is a single-channel optoisolator with transistor output, designed for 5000Vrms isolation applications. This component provides galvanic isolation in signal transmission circuits with a maximum output voltage of 80V and output current capability of 50mA per channel. The main part (CEL manufacturer) is discontinued at DiGi Electronics, necessitating the identification of active equivalent alternatives to maintain design continuity and procurement availability.

Substiute Parts

PS2581L2-D-A

CELIn Stock: 919PS2581L2-D-A Datasheet

Current PartRFQ

PS2581L2-D-A

Renesas Electronics CorporationIn Stock: 1239PS2581L2-D-A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PS2581L2-D-A optoisolator is determined by matching the following critical electrical and mechanical parameters: isolation voltage rating (5000Vrms), single-channel configuration, transistor output topology, current transfer ratio specification (100% to 300% @ 5mA), maximum output voltage (80V), output current capacity (50mA), package type (4-SMD, Gull Wing), and surface mount mounting method. All parameters must be identical or exceed the original specification. The parametric equivalent PS2581L2-D-A from Renesas Electronics Corporation meets all these requirements without compromise, ensuring drop-in replacement capability in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The Renesas Electronics Corporation PS2581L2-D-A serves as the direct parametric equivalent for the discontinued CEL PS2581L2-D-A. The Renesas variant maintains identical electrical specifications across all critical parameters and achieves the same package configuration. The Renesas part carries active product status with current inventory availability (1171 pieces), providing supply chain continuity. Both variants comply with ROHS3 and REACH regulatory requirements, maintain MSL Level 1 (Unlimited) moisture sensitivity rating, and share identical export classification (EAR99). Selection of the Renesas alternative is supported by full parametric equivalence and active manufacturing status, eliminating supply chain discontinuity for new designs and legacy production requirements.

Frequently Asked Questions (FAQ)

Q: Can the PS2581L2-D-A (Renesas) be used as a direct replacement for the PS2581L2-D-A (CEL)? A: Yes. The Renesas variant is a parametric equivalent with identical electrical characteristics, output specifications, isolation voltage, current transfer ratio, temperature range, and package configuration. No circuit modifications are required for direct substitution.

Q: What package configuration is required for this optoisolator? A: The PS2581L2-D-A requires a 4-SMD, Gull Wing surface mount package. Both the original and equivalent parts use this identical package type, ensuring PCB footprint compatibility without redesign.

Q: Are there any compliance or certification differences between the two variants? A: No. Both the CEL and Renesas variants carry identical ROHS3 compliance, REACH status, MSL Level 1 rating, and EAR99 export classification. There are no compliance barriers to substitution.

Q: Why is the CEL part listed as discontinued? A: The CEL PS2581L2-D-A is discontinued at DiGi Electronics, indicating reduced distribution availability. The Renesas equivalent maintains active product status and current inventory, providing uninterrupted supply for procurement and production.

Q: What are the critical electrical parameters for PS2581L2-D-A substitution? A: Critical parameters for substitution include: 5000Vrms isolation voltage, 1-channel configuration, transistor output type, 100–300% current transfer ratio at 5mA input, 80V maximum output voltage, and 50mA output current per channel. All parameters must match or exceed the original specification for valid substitution.

Q: Is packaging different between the CEL and Renesas variants? A: The CEL variant uses standard packaging without specified packaging type notation, while the Renesas variant is supplied in Tube packaging. Despite this packaging format difference, the component package itself remains 4-SMD, Gull Wing, ensuring mechanical and electrical compatibility on the PCB.