PS2503L-1 Equivalent & Substitute Parts

Part Overview

The PS2503L-1 is an optoisolator with transistor output offering 5000Vrms isolation voltage in a 4-SMD surface mount package. This component features a single isolation channel with DC input and transistor output, designed for galvanic isolation applications. The main part PS2503L-1 (manufactured by CEL) carries an Obsolete product status, necessitating the identification of functionally compatible substitute parts from active product lines to ensure design continuity and manufacturing feasibility.

Substiute Parts

PS2503L-1

CELIn Stock: 1186PS2503L-1 Datasheet

Current PartRFQ

PS2503L-1-F3-A

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

SimilarRFQ

PS2503L-1-K-A

Renesas Electronics CorporationIn Stock: 988PS2503L-1-K-A Datasheet

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PS2503L-1-L-A

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

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PS2503L-1 is determined by strict equivalence across the following critical electrical and mechanical parameters:

Critical Equivalence Requirements:

• Voltage - Isolation: 5000Vrms (exact match required)
• Number of Channels: 1 (exact match required)
• Input Type: DC (exact match required)
• Output Type: Transistor (exact match required)
• Voltage - Output (Max): 40V (exact match required)
• Current - Output / Channel: 30mA (exact match required)
• Package / Case: 4-SMD, Gull Wing (exact match required)
• Supplier Device Package: 4-SMD (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Vce Saturation (Max): 250mV (exact match required)
• Voltage - Forward (Vf) (Typ): 1.1V (exact match required)
• Operating Temperature Range: -55°C ~ 100°C (exact match required)
• Rise / Fall Time (Typ): 20µs, 30µs (exact match required)

Allowable Parameter Variations:

• Current Transfer Ratio (Min): 100% to 200% @ 1mA (substitutes may exceed minimum specification)
• Current Transfer Ratio (Max): 300% to 400% @ 1mA (substitutes may vary within range)
• Packaging configuration (Tape & Reel vs Tube vs unspecified)
• Product status (Active preferred over Obsolete or Not For New Designs)
• RoHS compliance level (ROHS3 Compliant preferred over non-compliant)
• REACH status (differences permitted)

All identified substitute parts meet the critical equivalence requirements and belong to the same NEPOC series base product family (PS2503).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

PS2503L-1-K-A and PS2503L-1-L-A are both classified as Active products from Renesas Electronics Corporation and represent the preferred substitution choices. PS2503L-1-K-A provides the highest current transfer ratio minimum specification (200% @ 1mA) and maintains ROHS3 compliance. PS2503L-1-L-A offers a mid-range current transfer ratio (150% @ 1mA minimum) with ROHS3 compliance and is available in Tube packaging.

Secondary Substitute (Not For New Designs):

PS2503L-1-F3-A maintains Not For New Designs status and should be selected only in situations where inventory constraints or supply chain requirements necessitate use of this variant. This part exhibits identical electrical specifications to the original PS2503L-1, with current transfer ratio performance matching the original specification range (100% to 400% @ 1mA).

Compliance Consideration:

All substitute parts achieve ROHS3 compliance, whereas the original PS2503L-1 (CEL) carries RoHS non-compliance status. This represents a design improvement when transitioning to substitute parts.

Frequently Asked Questions (FAQ)

Q: Can PS2503L-1-K-A directly replace PS2503L-1 without circuit modifications?

A: Yes. PS2503L-1-K-A meets all critical electrical and mechanical equivalence parameters. The higher current transfer ratio minimum (200% vs 100%) is a performance enhancement that does not necessitate circuit redesign. Both parts are rated for identical isolation voltage (5000Vrms), output voltage (40V maximum), output current (30mA), and operating temperature range (-55°C to 100°C).

Q: What is the difference between the Current Transfer Ratio specifications across the substitute parts?

A: Current Transfer Ratio describes the efficiency of signal transfer across the isolation barrier. PS2503L-1 specification ranges from 100% to 400% @ 1mA input current. PS2503L-1-K-A ranges from 200% to 400%, and PS2503L-1-L-A ranges from 150% to 300%. All three specifications overlap and are functionally compatible for applications designed for the original part.

Q: Why are there different packaging options (Tape & Reel, Tube, unspecified)?

A: Packaging format relates to distribution and assembly processes rather than component functionality. Tape & Reel packaging suits automated pick-and-place assembly, while Tube packaging accommodates manual or legacy assembly methods. The electrical and mechanical performance is identical across packaging formats for the same part number.

Q: Does the ROHS3 compliance change the part's electrical behavior?

A: No. ROHS3 compliance reflects manufacturing process restrictions (elimination of lead and other hazardous substances) and does not alter the component's electrical specifications, performance characteristics, or circuit compatibility.

Q: Which substitute offers the best long-term availability?

A: PS2503L-1-K-A and PS2503L-1-L-A both carry Active product status, indicating ongoing manufacturing and support from Renesas Electronics Corporation. PS2503L-1-F3-A carries Not For New Designs status, indicating restricted future availability and making it unsuitable for new designs or long-term production requirements.