PS2501L-1 Equivalent & Substitute Parts

Part Overview

The PS2501L-1 is a 5000Vrms isolated optoisolator with transistor output, a 1-channel configuration in 4-SMD Gull Wing packaging. This component is classified as Obsolete, requiring identification of functionally equivalent alternatives for new designs and ongoing supply chain management. The replacement options maintain critical isolation voltage specifications and electrical performance characteristics necessary for high-voltage isolation applications.

Substiute Parts

PS2501L-1

CELIn Stock: 1624PS2501L-1 Datasheet

Current PartRFQ

OCP-PCT114/E-TR

Lumex Opto/Components Inc.In Stock: 1214OCP-PCT114/E-TR Datasheet

DirectRFQ

PS2501L-1-A

Renesas Electronics CorporationIn Stock: 2436PS2501L-1-A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS2501L-1 is determined by the following critical electrical and mechanical compatibility parameters:

Primary Substitution Criteria:

• Voltage - Isolation: 5000Vrms (mandatory match)
• Number of Channels: 1 (mandatory match)
• Output Type: Transistor (mandatory match)
• Package / Case: 4-SMD, Gull Wing (mandatory match)
• Mounting Type: Surface Mount (mandatory match)
• Current - Output / Channel: 50mA (required for load compatibility)

Secondary Compatibility Parameters:

• Voltage - Output (Max): 80V or higher
• Vce Saturation (Max): 300mV or lower
• Current Transfer Ratio: Ranges supporting DC input applications

Substitute parts PS2501L-1-A and OCP-PCT114/E-TR maintain these critical specifications, enabling direct replacement in isolation circuit applications while accommodating variations in temperature operating ranges and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

PS2501L-1-A (Renesas Electronics Corporation): This part provides identical electrical specifications to the original PS2501L-1, including current transfer ratio and output voltage ratings. The part is classified as "Not For New Designs," indicating limited future availability but maintaining direct compatibility. RoHS3 compliance provides improved regulatory alignment over the original non-compliant design. This option is suitable for existing production lines requiring immediate obsolescence mitigation without electrical redesign.

OCP-PCT114/E-TR (Lumex Opto/Components Inc.): This part maintains 5000Vrms isolation voltage and 50mA output current capacity with Active product status, ensuring ongoing supplier availability. Compliance certifications include ROHS3 and REACH Unaffected status, providing superior environmental and regulatory standing. The reduced maximum output voltage (60V vs. 80V) and minimum current transfer ratio (60% @ 2mA vs. 80% @ 5mA) require circuit verification against design margin specifications. The narrower operating temperature range (-30°C ~ 100°C) requires assessment against applications demanding extended low-temperature operation.

Frequently Asked Questions (FAQ)

Q: Can OCP-PCT114/E-TR directly replace PS2501L-1 in all applications?

A: Direct replacement requires verification of two design parameters. The OCP-PCT114/E-TR features a maximum output voltage of 60V compared to 80V in the PS2501L-1. Applications operating at output voltages between 60V and 80V require circuit redesign or alternative component selection. Additionally, the minimum current transfer ratio is 60% at 2mA versus 80% at 5mA; designs with tighter gain margin specifications must validate performance under actual input signal conditions.

Q: What is the substitution relationship between PS2501L-1-A and the original PS2501L-1?

A: PS2501L-1-A is identical in electrical performance and packaging to PS2501L-1, with the distinction being manufacturer (Renesas vs. CEL) and compliance certifications. Both components share the same current transfer ratio specifications, output voltage ratings, and operating temperature range. PS2501L-1-A is referenced as a direct substitute and provides continuity for existing designs.

Q: Does substitution require PCB layout modifications?

A: No. All three components employ 4-SMD Gull Wing packaging with identical mechanical footprints. PCB layouts remain unchanged during substitution.

Q: How does operating temperature range affect substitute selection?

A: The PS2501L-1 and PS2501L-1-A operate across -55°C to 100°C, while OCP-PCT114/E-TR operates across -30°C to 100°C. Applications requiring operation below -30°C necessitate PS2501L-1-A or continued use of PS2501L-1 stock. Standard industrial temperature ranges (-40°C to 85°C) are supported by all three components.

Q: What are the compliance considerations for new designs?

A: PS2501L-1 is RoHS non-compliant and marked Obsolete. PS2501L-1-A offers ROHS3 compliance with Not For New Designs status, providing interim regulatory alignment. OCP-PCT114/E-TR features Active product status with ROHS3 and REACH Unaffected certifications, making it the recommended selection for new designs subject to environmental regulations.