PS2581AL2-F3-A Equivalent & Substitute Parts

Part Overview

The PS2581AL2-F3-A is a 5000Vrms optoisolator with transistor output, single channel configuration in 4-SMD surface mount package, manufactured by CEL. This component is discontinued at DiGi Electronics, necessitating identification of equivalent substitute parts for ongoing production and maintenance applications. The NEPOC series optoisolators provide galvanic isolation suitable for industrial control, power management, and signal conditioning circuits requiring high voltage isolation ratings.

Substiute Parts

PS2581AL2-F3-A

CELIn Stock: 594481PS2581AL2-F3-A Datasheet

Current PartRFQ

PS2501AL-1-F3-A

Renesas Electronics CorporationIn Stock: 163802PS2501AL-1-F3-A Datasheet

Parametric EquivalentRFQ

PS2561AL2-1-V-F3-L-A

Renesas Electronics CorporationIn Stock: 1104PS2561AL2-1-V-F3-L-A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PS2581AL2-F3-A are identified based on strict parametric equivalence across the following critical specifications:

Isolation Voltage: 5000Vrms (primary isolation requirement)

Channel Configuration: Single channel (1 channel)

Output Configuration: Transistor output (determines circuit interface compatibility)

Current Transfer Ratio Range: 50% minimum and 400% maximum at 5mA input (defines optical coupling efficiency)

Output Electrical Characteristics: Maximum output voltage 70V, maximum output current 30mA, maximum Vce saturation 300mV (determines load-driving capability)

Switching Performance: Rise time 3µs and fall time 5µs (defines maximum switching frequency)

Temperature Range: -55°C to 100°C (operational environment compatibility)

Package Type: 4-SMD, Gull Wing surface mount (physical and electrical interface requirement)

Compliance: ROHS3 compliant, Moisture Sensitivity Level 1 (regulatory and handling requirements)

All substitute parts listed maintain identical values across these parameters, ensuring direct functional replacement without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

PS2561AL2-1-V-F3-L-A (Renesas Electronics Corporation) is the primary recommended substitute. This part maintains active product status, indicating ongoing manufacturer support and availability. All electrical and mechanical parameters are identical to the PS2581AL2-F3-A. ROHS3 compliance and MSL Level 1 rating ensure regulatory conformance and handling compatibility with existing supply chain processes.

PS2501AL-1-F3-A (Renesas Electronics Corporation) is a secondary equivalent option. This part provides identical parametric specifications and ROHS3 compliance. However, its "Not For New Designs" status indicates limited future availability and manufacturer support. This part is suitable for replacement in existing production runs or maintenance applications where immediate availability is required, but should not be selected for new product development.

Both Renesas substitutes are members of the NEPOC series, ensuring design continuity and compatibility with existing circuit implementations. Selection between these two options should be based on supply chain availability and production timeline requirements.

Frequently Asked Questions (FAQ)

Q: Can PS2561AL2-1-V-F3-L-A directly replace PS2581AL2-F3-A without circuit modification?

A: Yes. All electrical parameters, output characteristics, isolation voltage, switching performance, and package configuration are identical. Direct pin-for-pin substitution is supported without circuit redesign.

Q: What is the difference between PS2501AL-1-F3-A and PS2561AL2-1-V-F3-L-A?

A: Both parts are parametrically equivalent with identical electrical specifications. The primary difference is product status: PS2561AL2-1-V-F3-L-A is Active, while PS2501AL-1-F3-A is Not For New Designs. For new applications, PS2561AL2-1-V-F3-L-A is preferred due to ongoing manufacturer support.

Q: Are there packaging differences between the substitute parts?

A: All three parts use 4-SMD, Gull Wing surface mount packages. PS2581AL2-F3-A and PS2561AL2-1-V-F3-L-A have unspecified packaging format, while PS2501AL-1-F3-A is supplied in Tape & Reel (TR) format. This affects supply chain handling but does not impact electrical compatibility.

Q: Do the substitute parts meet the same compliance requirements?

A: Yes. All substitute parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control. Moisture Sensitivity Level is 1 (Unlimited) for all parts, indicating no special moisture handling requirements.

Q: What is the current transfer ratio specification, and how does it affect circuit design?

A: Current transfer ratio ranges from 50% to 400% at 5mA input current. This specification defines the optical coupling efficiency between input LED and output transistor. All substitute parts maintain this identical range, ensuring consistent circuit performance across input current variations.

Q: Are the switching characteristics identical across all three parts?

A: Yes. Rise time is 3µs and fall time is 5µs for all parts. These parameters define maximum switching frequency capability and are identical across PS2581AL2-F3-A and both substitute parts.

Q: What is the maximum output current capability?

A: Maximum output current per channel is 30mA for all parts. This specification determines the maximum load current that can be driven by the transistor output stage.