PS2561DL2-1Y-A Equivalent & Substitute Parts

Part Overview

The PS2561DL2-1Y-A is a single-channel optoisolator with transistor output, rated for 5000Vrms isolation voltage. This component is designed for applications requiring galvanic isolation between input and output circuits in industrial control, power management, and signal conditioning systems. The original manufacturer part (CEL) is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives to maintain supply chain continuity and design flexibility.

Key Parameters

Parameter	Value
Number of Channels	1
Voltage - Isolation	5000Vrms
Current Transfer Ratio (Min)	50% @ 5mA
Current Transfer Ratio (Max)	400% @ 5mA
Rise / Fall Time (Typ)	3µs, 5µs
Input Type	DC
Output Type	Transistor
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Voltage - Forward (Vf) (Typ)	1.2V
Current - DC Forward (If) (Max)	40 mA
Vce Saturation (Max)	300mV
Operating Temperature	-55°C ~ 110°C
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the PS2561DL2-1Y-A is determined by strict equivalence across the following critical parameters:

Isolation and Electrical Performance:

Voltage isolation rating of 5000Vrms
Current transfer ratio range: 50% to 400% @ 5mA
Maximum output voltage of 80V
Maximum output current of 50mA per channel
Vce saturation maximum of 300mV

Functional Characteristics:

Single-channel configuration
Transistor output topology
DC input type
Rise and fall times of 3µs and 5µs respectively

Physical and Environmental Specifications:

Surface mount technology with 4-SMD, Gull Wing package
Operating temperature range of -55°C to 110°C
RoHS3 compliance
MSL rating of 1 (Unlimited)

The PS2561DL2-1Y-A from Renesas Electronics Corporation meets all these criteria and is classified as a parametric equivalent.

Parameter Comparison

Parameter	PS2561DL2-1Y-A (CEL)	PS2561DL2-1Y-A (Renesas)
Manufacturer	CEL	Renesas Electronics Corporation
Product Status	Discontinued at DiGi Electronics	Active
Number of Channels	1	1
Voltage - Isolation	5000Vrms	5000Vrms
Current Transfer Ratio (Min)	50% @ 5mA	50% @ 5mA
Current Transfer Ratio (Max)	400% @ 5mA	400% @ 5mA
Rise / Fall Time (Typ)	3µs, 5µs	3µs, 5µs
Input Type	DC	DC
Output Type	Transistor	Transistor
Voltage - Output (Max)	80V	80V
Current - Output / Channel	50mA	50mA
Voltage - Forward (Vf) (Typ)	1.2V	1.2V
Current - DC Forward (If) (Max)	40 mA	40 mA
Vce Saturation (Max)	300mV	300mV
Operating Temperature	-55°C ~ 110°C	-55°C ~ 110°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99

Engineering Selection Recommendations

The PS2561DL2-1Y-A from Renesas Electronics Corporation is a direct parametric equivalent to the discontinued CEL version. Selection between these parts should be based on the following factors:

Product Availability: The Renesas variant is currently in active production status with 9531 units in stock, whereas the CEL original is discontinued. For new designs or replenishment, the Renesas part ensures supply chain continuity.

Regulatory Compliance: Both variants maintain identical RoHS3 compliance, REACH unaffected status, and EAR99 export classification, ensuring no regulatory barriers to substitution.

Packaging and Environmental Specifications: Both parts share identical surface mount packaging (4-SMD, Gull Wing), MSL rating (1 - Unlimited), and operating temperature range (-55°C to 110°C), confirming mechanical and environmental interchangeability.

Electrical Performance: All critical electrical parameters—isolation voltage, current transfer ratio, output voltage and current ratings, and saturation characteristics—are identical between the two variants, confirming functional equivalence for circuit operation.

Frequently Asked Questions (FAQ)

Q: Can the Renesas PS2561DL2-1Y-A be used as a direct replacement for the CEL PS2561DL2-1Y-A?

A: Yes. Both parts are parametrically identical across all specified electrical, mechanical, and environmental parameters. No circuit modifications are required for substitution.

Q: What are the critical parameters that define substitution eligibility for this optoisolator?

A: Substitution is determined by equivalence in isolation voltage (5000Vrms), current transfer ratio range (50% to 400% @ 5mA), output voltage and current ratings (80V, 50mA), transistor output topology, single-channel configuration, and 4-SMD Gull Wing package format.

Q: Are there any compliance or certification differences between the two parts?

A: No. Both variants maintain identical RoHS3 compliance, REACH unaffected status, MSL rating of 1 (Unlimited), and EAR99 export classification.

Q: Does the packaging differ between the CEL and Renesas versions?

A: No. Both parts use identical 4-SMD Gull Wing surface mount packaging. The Renesas version is supplied in tube packaging, while the original CEL packaging format is not specified in the available data.

Q: What is the operating temperature range for this optoisolator?

A: Both variants operate across -55°C to 110°C, suitable for industrial and extended temperature applications.

Q: Are there any differences in rise and fall time specifications?

A: No. Both parts specify identical rise and fall times of 3µs and 5µs respectively.

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