PS2503L-1-A Equivalent & Substitute Parts

Part Overview

The PS2503L-1-A is a 5000Vrms isolation optoisolator with transistor output, featuring 1 channel in a 4-SMD gull wing package. This component is discontinued at DiGi Electronics, making it necessary to identify compatible alternative components for ongoing applications. The main substitutes maintain the same core isolation voltage, output type, and electrical characteristics while offering different packaging and availability options.

Substiute Parts

PS2503L-1-A

CELIn Stock: 1943PS2503L-1-A Datasheet

Current PartRFQ

PS2503L-1-F3-A

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

DirectRFQ

PS2503L-1-L-A

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PS2503L-1-A is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Isolation: 5000Vrms (exact match required)
• Number of Channels: 1 (exact match required)
• Output Type: Transistor (exact match required)
• Package / Case: 4-SMD, Gull Wing (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C ~ 100°C (exact match required)

Secondary Compatibility Parameters (allowable variation):

• Current Transfer Ratio: 100–400% @ 1mA acceptable
• Voltage - Output (Max): 40V
• Current - Output / Channel: 30mA
• Voltage - Forward (Vf) (Typ): 1.1V
• Current - DC Forward (If) (Max): 80mA
• Vce Saturation (Max): 250mV
• Rise / Fall Time (Typ): 20µs, 30µs

The identified substitutes share all primary criteria and remain within secondary parameter tolerances.

Parameter Comparison

Engineering Selection Recommendations

PS2503L-1-F3-A (Direct Substitute): Identical electrical specifications to the main part. Supplied in Tape & Reel packaging. Product status is Not For New Designs; however, it remains functionally compatible for existing designs requiring replacement units. RoHS3 and ROHS3 compliant with REACH Unaffected status.

PS2503L-1-L-A (Active Alternative): Maintains all critical electrical parameters with expanded current transfer ratio minimum (150% @ 1mA versus 100% @ 1mA on the main part). Supplied in Tube packaging. Product status is Active, making it the recommended choice for new applications. RoHS3 compliant with REACH Affected status.

Both substitutes satisfy the core isolation voltage, channel count, output type, and package footprint requirements. Selection between them depends on packaging availability and long-term product lifecycle requirements.

Frequently Asked Questions (FAQ)

Q: Can PS2503L-1-F3-A replace PS2503L-1-A without circuit modification? A: Yes. All electrical parameters and physical package dimensions are identical. The only difference is packaging format (Tape & Reel versus bulk/strip). No circuit changes are required.

Q: Is PS2503L-1-L-A a direct drop-in replacement? A: Yes, as a direct drop-in replacement. The higher minimum current transfer ratio (150% versus 100%) does not impact compatibility; it represents improved performance characteristics while remaining within the specified operating envelope.

Q: What is the difference between Tape & Reel and Tube packaging? A: Tape & Reel (PS2503L-1-F3-A) is automated pick-and-place compatible for high-volume manufacturing. Tube packaging (PS2503L-1-L-A) is manual handling compatible for lower-volume assembly or stocking purposes. Both formats contain identical components.

Q: Should new designs use PS2503L-1-L-A instead of the discontinued PS2503L-1-A? A: Yes. PS2503L-1-L-A has Active product status and is suitable for new designs. It provides the same functionality with improved current transfer ratio specifications and broader availability.

Q: Are compliance certifications equivalent across all three parts? A: All three parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). The primary difference is REACH status: PS2503L-1-F3-A is REACH Unaffected, while the main part and PS2503L-1-L-A are REACH Affected. For regulatory purposes, verify REACH compliance with your application requirements.

Q: What is the significance of the "Not For New Designs" status on PS2503L-1-F3-A? A: This status indicates Renesas has deprioritized future production capacity allocation for this part number. Existing inventory remains available, but new designs should preferentially use PS2503L-1-L-A (Active status) to ensure long-term supply continuity.