PS2561-1-V-A Optoisolator Equivalent & Substitute Parts

Part Overview

The PS2561-1-V-A is a single-channel optoisolator with transistor output manufactured by CEL, designed for 5000Vrms isolation applications. This component features DC input, transistor output configuration, and is housed in a 4-DIP package suitable for through-hole mounting. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

PS2561-1-V-A

CELIn Stock: 105479PS2561-1-V-A Datasheet

Current PartRFQ

PS2561-1-A

Renesas Electronics CorporationIn Stock: 26390PS2561-1-A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS2561-1-V-A is determined by strict equivalence across the following critical parameters:

• Isolation Voltage: 5000Vrms (primary isolation specification)
• Channel Configuration: Single channel (1 channel)
• Output Stage: Transistor output topology
• Current Transfer Ratio: 80% minimum and 400% maximum at 5mA input
• Maximum Output Voltage: 80V
• Maximum Output Current: 50mA per channel
• Saturation Voltage: 300mV maximum
• Temperature Range: -55°C to 100°C operating window
• Package Format: 4-DIP (0.300", 7.62mm) through-hole configuration

The PS2561-1-A qualifies as a parametric equivalent based on matching all specified electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

The PS2561-1-A manufactured by Renesas Electronics Corporation is a direct parametric equivalent to the discontinued PS2561-1-V-A. Both components share identical electrical specifications, mechanical packaging, and regulatory compliance certifications.

Product Status Consideration: The PS2561-1-V-A is discontinued at DiGi Electronics. The PS2561-1-A carries a "Not For New Designs" status from Renesas Electronics Corporation, indicating limited future availability. For applications requiring long-term component sourcing stability, evaluation of alternative optoisolator architectures within the same isolation voltage and output current specifications may be warranted.

Compliance Alignment: Both parts maintain ROHS3 compliance, REACH affected status, and EAR99 export classification, ensuring regulatory consistency in design transitions.

Packaging and Mounting: Identical 4-DIP through-hole package specifications ensure direct PCB layout compatibility without redesign requirements.

Frequently Asked Questions (FAQ)

Q: Can the PS2561-1-A directly replace the PS2561-1-V-A in existing designs?

A: Yes. The PS2561-1-A matches all specified electrical parameters, output characteristics, isolation voltage, current transfer ratios, and package dimensions. Direct substitution is supported without circuit modification.

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

A: Substitution eligibility is determined by matching: 5000Vrms isolation voltage, single-channel configuration, transistor output topology, 80-400% current transfer ratio range, 80V maximum output voltage, 50mA maximum output current, 300mV maximum saturation voltage, and 4-DIP through-hole package format.

Q: Are there packaging differences between the main part and substitute?

A: The PS2561-1-V-A packaging is not specified in available data. The PS2561-1-A is supplied in Tube packaging. Both use identical 4-DIP (0.300", 7.62mm) case format for through-hole mounting.

Q: What is the significance of the "Not For New Designs" status on the PS2561-1-A?

A: This status indicates Renesas Electronics Corporation does not recommend this component for new design implementations. While it remains functionally equivalent and available in current inventory (26,300 pcs), it may have limited long-term availability. Existing designs may continue using this part; new designs should evaluate alternative optoisolator solutions.

Q: Are compliance certifications identical between both parts?

A: Yes. Both the PS2561-1-V-A and PS2561-1-A maintain ROHS3 compliance, REACH affected designation, EAR99 export classification, and MSL 1 (Unlimited) moisture sensitivity rating.