PS2503-1-L-A Equivalent & Substitute Parts

Part Overview

The PS2503-1-L-A is a 5000Vrms optoisolator with transistor output, single channel configuration in 4-DIP through-hole package. Manufactured by CEL under the NEPOC series, this component provides galvanic isolation for DC input signals with 30mA output current capability and 40V maximum output voltage rating.

This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives. Substitute parts maintain core electrical specifications including 5000Vrms isolation voltage, transistor output topology, and compatible operating temperature range while offering different packaging and mounting technologies.

Substiute Parts

PS2503-1-L-A

CELIn Stock: 778PS2503-1-L-A Datasheet

Current PartRFQ

PS2503L-1-F3-A

Renesas Electronics CorporationIn Stock: 1711PS2503L-1-F3-A Datasheet

SimilarRFQ

PS2503L-1-L-A

Renesas Electronics CorporationIn Stock: 1142PS2503L-1-L-A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for PS2503-1-L-A is determined by strict equivalence across the following critical parameters:

Mandatory Matching Criteria:

• Isolation voltage: 5000Vrms
• Output type: Transistor
• Number of channels: 1
• Operating temperature range: -55°C ~ 100°C
• Input type: DC
• Maximum output voltage: 40V
• Output current per channel: 30mA
• Vce saturation maximum: 250mV
• Rise/fall time: 20µs, 30µs
• Forward voltage: 1.1V
• Maximum DC forward current: 80mA

Allowable Variation:

• Current transfer ratio range: Substitute minimum must be ≥100% @ 1mA; maximum must be ≤400% @ 1mA
• Mounting type: Through-hole or surface-mount technologies acceptable
• Package configuration: 4-DIP or 4-SMD formats
• Packaging format: Tube, tape & reel, or equivalent
• Product status: Active or not-for-new-designs acceptable

Two substitute parts meet these criteria: PS2503L-1-L-A and PS2503L-1-F3-A, both manufactured by Renesas Electronics Corporation under the NEPOC series.

Parameter Comparison

Engineering Selection Recommendations

PS2503L-1-L-A (Primary Substitute)

This part is the preferred substitute for PS2503-1-L-A. It maintains identical electrical specifications including current transfer ratio range (150%-300% @ 1mA), output characteristics, and operating temperature limits. The part carries Active product status, ensuring continued availability and manufacturing support. ROHS3 compliance and REACH Affected designation match the original part. The surface-mount 4-SMD package requires PCB layout modification from the through-hole 4-DIP configuration. Tube packaging format supports standard component handling procedures.

PS2503L-1-F3-A (Secondary Substitute)

This part provides electrical equivalence with expanded current transfer ratio tolerance (100%-400% @ 1mA), maintaining all other critical parameters. The part is designated Not For New Designs, indicating limited future availability. REACH Unaffected status differs from the original part specification. Surface-mount 4-SMD package requires identical PCB layout changes as PS2503L-1-L-A. Tape & Reel packaging format supports automated assembly processes.

Selection Basis:

For new designs or long-term production requirements, PS2503L-1-L-A is specified due to Active product status and REACH Affected compliance alignment with the original part. PS2503L-1-F3-A is suitable for applications where expanded current transfer ratio tolerance is acceptable and immediate availability is prioritized over long-term supply assurance.

Both substitutes require PCB redesign to accommodate surface-mount technology in place of through-hole mounting. Electrical circuit performance remains equivalent across all three part numbers.

Frequently Asked Questions (FAQ)

Q: Can PS2503L-1-L-A directly replace PS2503-1-L-A in existing through-hole PCB designs?

A: No. PS2503L-1-L-A uses 4-SMD surface-mount package versus the original 4-DIP through-hole package. PCB layout and assembly process modifications are required. The electrical specifications are equivalent; only the mounting technology differs.

Q: What is the difference between PS2503L-1-L-A and PS2503L-1-F3-A?

A: Both parts share identical electrical performance and operating characteristics. The primary differences are: (1) PS2503L-1-L-A has Active product status while PS2503L-1-F3-A is Not For New Designs; (2) PS2503L-1-L-A uses Tube packaging while PS2503L-1-F3-A uses Tape & Reel format; (3) PS2503L-1-L-A is REACH Affected while PS2503L-1-F3-A is REACH Unaffected; (4) Current transfer ratio tolerance ranges differ slightly (150%-300% versus 100%-400% @ 1mA).

Q: Are the electrical specifications truly equivalent between all three parts?

A: Yes, for the critical parameters that determine circuit function: isolation voltage (5000Vrms), output type (transistor), output current (30mA), maximum output voltage (40V), Vce saturation (250mV), rise/fall time (20µs, 30µs), and operating temperature range (-55°C ~ 100°C) are identical across PS2503-1-L-A, PS2503L-1-L-A, and PS2503L-1-F3-A.

Q: Which substitute should be selected for new product designs?

A: PS2503L-1-L-A is specified for new designs due to Active product status, ensuring long-term manufacturing availability and supply chain stability.

Q: What compliance certifications are maintained across all three parts?

A: All three parts are ROHS3 Compliant, carry EAR99 ECCN classification, and have Moisture Sensitivity Level 1 (Unlimited). REACH status differs: PS2503-1-L-A and PS2503L-1-L-A are REACH Affected; PS2503L-1-F3-A is REACH Unaffected.

Q: Does the current transfer ratio variation between substitutes affect circuit design?

A: The current transfer ratio determines LED input current to transistor output current conversion efficiency. PS2503L-1-F3-A's expanded range (100%-400% @ 1mA) versus the original 150%-300% @ 1mA provides broader tolerance but does not change circuit design requirements. Both ranges support the same application requirements.

Q: What packaging format considerations apply to each substitute?

A: PS2503L-1-L-A is supplied in Tube format, suitable for manual or semi-automated assembly. PS2503L-1-F3-A is supplied in Tape & Reel format, optimized for fully automated pick-and-place assembly processes. Both are surface-mount 4-SMD packages.