PS2505L-4 Equivalent & Substitute Parts

Part Overview

The PS2505L-4 is a 4-channel optoisolator with transistor output rated for 5000Vrms isolation voltage. The main part is classified as obsolete, requiring identification of compatible alternatives for ongoing applications. This document provides engineering-grade equivalent and substitute part options based on electrical and mechanical parameter compatibility.

Key Parameters

Parameter	Value
Number of Channels	4
Voltage - Isolation	5000Vrms
Output Type	Transistor
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Mounting Type	Surface Mount
Package / Case	16-SMD, Gull Wing
Operating Temperature	-55°C ~ 100°C

Substitute Part Grouping Explanation

Substitution of the PS2505L-4 is evaluated based on the following critical electrical and mechanical parameters:

Mandatory Equivalence Parameters:

Number of Channels: 4
Voltage - Isolation: 5000Vrms
Output Type: Transistor
Mounting Type: Surface Mount
Package / Case: 16-SMD, Gull Wing

Electrical Performance Parameters:

Current Transfer Ratio (Min): ≥ 80% @ specified test current
Voltage - Output (Max): ≥ 80V
Current - Output / Channel: ≥ 50mA
Operating Temperature Range: Must support -55°C ~ 100°C or compatible subset

The substitute parts identified maintain these core electrical and mechanical specifications, ensuring functional compatibility in applications designed for the PS2505L-4.

Parameter Comparison

Parameter	PS2505L-4 (Main Part)	PS2505L-4-A (Direct Equivalent)	OCP-PCT4216/A-TR (Similar)
Manufacturer	CEL	Renesas Electronics Corporation	Lumex Opto/Components Inc.
Number of Channels	4	4	4
Voltage - Isolation	5000Vrms	5000Vrms	5000Vrms
Current Transfer Ratio (Min)	80% @ 5mA	80% @ 5mA	60% @ 1mA
Current Transfer Ratio (Max)	600% @ 5mA	600% @ 5mA	600% @ 1mA
Rise / Fall Time (Typ)	3µs, 5µs	3µs, 5µs	5µs, 4µs
Voltage - Output (Max)	80V	80V	60V
Current - Output / Channel	50mA	50mA	50mA
Vce Saturation (Max)	300mV	300mV	300mV
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-30°C ~ 100°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	16-SMD, Gull Wing	16-SMD, Gull Wing	16-SMD, Gull Wing
Product Status	Obsolete	Not For New Designs	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

PS2505L-4-A (Direct Equivalent): This part is the primary equivalent substitute, maintaining identical electrical performance specifications across all core parameters. It is supplied by Renesas Electronics Corporation under the same base product line (NEPOC series). Primary advantage: ROHS3 compliance addresses environmental regulatory requirements where the original PS2505L-4 does not. The part is classified as "Not For New Designs," but remains suitable for maintaining legacy applications and replacement stock.

OCP-PCT4216/A-TR (Alternative Substitute): This part is classified as Active, providing the longest product lifecycle support. It maintains the 4-channel configuration, 5000Vrms isolation voltage, and 16-SMD package format. Electrical differences include lower maximum output voltage (60V vs. 80V) and minimum current transfer ratio measured at 1mA rather than 5mA. The operating temperature range is narrower (-30°C to 100°C vs. -55°C to 100°C), which may be limiting in extreme low-temperature applications. Selection should prioritize output voltage requirements and temperature range compatibility with the target application.

Frequently Asked Questions (FAQ)

Q: Can PS2505L-4-A be used as a direct drop-in replacement for PS2505L-4? A: Yes. The PS2505L-4-A maintains identical electrical and mechanical specifications. Both parts are manufactured in the same 16-SMD, Gull Wing package and exhibit the same current transfer ratio, output voltage, and channel configuration.

Q: What is the difference between the PS2505L-4-A and OCP-PCT4216/A-TR? A: The primary electrical differences are: (1) OCP-PCT4216/A-TR has a lower maximum output voltage of 60V compared to 80V, (2) its minimum current transfer ratio is specified at 1mA rather than 5mA test current, and (3) its operating temperature range is -30°C to 100°C rather than -55°C to 100°C. Both maintain 4-channel configuration and 5000Vrms isolation rating.

Q: Why is the main part PS2505L-4 marked as obsolete? A: The obsolete status indicates the manufacturer has discontinued production. Equivalent parts remain available from authorized suppliers and alternative manufacturers, ensuring continuity for applications requiring this optoisolator specification.

Q: Do the substitute parts share the same pinout as PS2505L-4? A: All substitute parts maintain the 16-SMD, Gull Wing package configuration. Pinout compatibility should be verified against the specific application schematic and component datasheet documentation.

Q: Which part should I select for new designs? A: OCP-PCT4216/A-TR is the recommended choice for new designs, as it maintains Active product status and provides the longest manufacturer support lifecycle. Verify that the 60V maximum output voltage specification meets application requirements.

Q: Are there RoHS compliance considerations? A: PS2505L-4-A and OCP-PCT4216/A-TR are both ROHS3 compliant, making them suitable for applications with environmental regulatory requirements. The original PS2505L-4 is RoHS non-compliant.


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