PS2561L-1-A Equivalent & Substitute Parts

Part Overview

The PS2561L-1-A is a 5000Vrms optoisolator with transistor output, featuring single-channel isolation in a 4-SMD surface-mount package. This component has been discontinued at DiGi Electronics, necessitating identification of equivalent substitute parts for ongoing system maintenance and new production runs. The part belongs to the NEPOC series and maintains full RoHS3 and REACH compliance, with an MSL rating of 1 (Unlimited).

Key Parameters

Parameter	Specification
Voltage - Isolation	5000Vrms
Number of Channels	1
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	400% @ 5mA
Rise / Fall Time (Typ)	3µs, 5µs
Output Type	Transistor
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Vce Saturation (Max)	300mV
Operating Temperature Range	-55°C ~ 100°C
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
Input Type	DC
Voltage - Forward (Vf) (Typ)	1.17V
Current - DC Forward (If) (Max)	80 mA
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Affected

Substitute Part Grouping Explanation

The PS2561L-1-A has three parametric equivalent substitutes: PS2561L-1-V-A, PS2581L2-A, and PS2561L-1-A (Renesas version). These substitutes are qualified based on identical electrical and mechanical parameters across all critical specifications including 5000Vrms isolation voltage, 80-400% current transfer ratio, 50mA output current, and 4-SMD surface-mount packaging. All three substitute parts maintain the same RoHS3 compliance, REACH status, and MSL rating, ensuring compatibility with existing circuit designs and manufacturing processes. Substitution is valid where the identical parameter set satisfies circuit requirements without additional validation.

Parameter Comparison

Parameter	PS2561L-1-A (CEL)	PS2561L-1-A (Renesas)	PS2561L-1-V-A	PS2581L2-A
Manufacturer	CEL	Renesas Electronics Corporation	Renesas Electronics Corporation	Renesas Electronics Corporation
Voltage - Isolation	5000Vrms	5000Vrms	5000Vrms	5000Vrms
Number of Channels	1	1	1	1
Current Transfer Ratio (Min)	80% @ 5mA	80% @ 5mA	80% @ 5mA	80% @ 5mA
Current Transfer Ratio (Max)	400% @ 5mA	400% @ 5mA	400% @ 5mA	400% @ 5mA
Rise / Fall Time (Typ)	3µs, 5µs	3µs, 5µs	3µs, 5µs	3µs, 5µs
Output Type	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	80V	80V	80V	80V
Current - Output / Channel	50mA	50mA	50mA	50mA
Vce Saturation (Max)	300mV	300mV	300mV	300mV
Operating Temperature Range	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing
Voltage - Forward (Vf) (Typ)	1.17V	1.17V	1.17V	1.17V
Current - DC Forward (If) (Max)	80 mA	80 mA	80 mA	80 mA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Affected	REACH Affected	REACH Affected	REACH Affected
Product Status	Discontinued at DiGi Electronics	Not For New Designs	Not For New Designs	Not For New Designs
Inventory	2300 Pcs	2300 Pcs	3256 Pcs	7954 Pcs

Engineering Selection Recommendations

All three substitute parts are parametrically equivalent to the original PS2561L-1-A and meet identical electrical and mechanical requirements. The Renesas Electronics Corporation versions (PS2561L-1-A, PS2561L-1-V-A, and PS2581L2-A) offer superior inventory availability across multiple SKUs, with PS2581L2-A providing the highest stock level at 7954 pieces. All alternatives maintain RoHS3 compliance and unlimited moisture sensitivity level, ensuring compatibility with automated assembly processes and long-term storage requirements. Selection among the three Renesas equivalents should be based on inventory availability and supply chain logistics, as electrical performance and packaging are identical.

Frequently Asked Questions (FAQ)

Q: Are PS2561L-1-V-A and PS2581L2-A direct substitutes for PS2561L-1-A? A: Yes. Both parts share identical electrical parameters including 5000Vrms isolation, 80-400% current transfer ratio, 50mA output current, and 4-SMD Gull Wing packaging. No circuit modifications are required for substitution.

Q: Does the packaging differ between the substitute parts? A: No. All parts utilize the same 4-SMD, Gull Wing surface-mount package with identical lead configuration and solder pad layout.

Q: Are all substitutes RoHS3 compliant? A: Yes. PS2561L-1-A (Renesas), PS2561L-1-V-A, and PS2581L2-A are all ROHS3 Compliant with MSL 1 (Unlimited) rating.

Q: What is the difference between the CEL version and Renesas versions? A: The primary difference is the manufacturer. Both CEL and Renesas versions maintain identical electrical specifications and 4-SMD packaging. The Renesas variants offer better long-term availability.

Q: Can these parts be used interchangeably in PCB assembly? A: Yes. The identical 4-SMD, Gull Wing package ensures direct interchangeability in assembly processes without modification to pick-and-place programs or reflow profiles.

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