PS2561F-1Y-K-A Equivalent & Substitute Parts

Part Overview

The PS2561F-1Y-K-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 with DC input control and transistor switching capability. The PS2561F-1Y-K-A is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

PS2561F-1Y-K-A

CELIn Stock: 1227PS2561F-1Y-K-A Datasheet

Current PartRFQ

PS2561F-1Y-A

Renesas Electronics CorporationIn Stock: 5560PS2561F-1Y-A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS2561F-1Y-K-A is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Isolation voltage: 5000Vrms
• Number of channels: 1
• Current transfer ratio range: 300% to 600% @ 5mA
• Output type: Transistor configuration
• Maximum output voltage: 80V
• Maximum output current per channel: 50mA
• Vce saturation: 300mV maximum
• Operating temperature range: -55°C to 110°C

Mechanical Equivalence Criteria:

• Package type: 4-DIP (0.300", 7.62mm)
• Mounting type: Through Hole

Compliance Equivalence Criteria:

• RoHS3 compliance
• REACH unaffected status

The PS2561F-1Y-A meets all specified electrical, mechanical, and compliance parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The PS2561F-1Y-A is a direct functional equivalent to the PS2561F-1Y-K-A. Both components share identical electrical specifications for isolation voltage, current transfer ratio, output voltage and current ratings, and saturation characteristics. Both are rated for the same operating temperature range and package configuration.

The PS2561F-1Y-A offers the advantage of active product status from Renesas Electronics Corporation, ensuring ongoing availability and supply chain continuity. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and legacy system support.

The PS2561F-1Y-A features a transistor output with base connection, compared to the standard transistor output of the main part. This configuration provides additional design flexibility for base-driven applications while maintaining full electrical compatibility for standard transistor-switched applications.

Frequently Asked Questions (FAQ)

Q: Can the PS2561F-1Y-A directly replace the PS2561F-1Y-K-A in existing designs?

A: Yes. Both components meet identical electrical specifications for isolation voltage (5000Vrms), current transfer ratio (300-600% @ 5mA), output voltage (80V max), output current (50mA), and operating temperature range (-55°C to 110°C). Both use the same 4-DIP through-hole package.

Q: What is the difference between transistor output and transistor with base output?

A: The PS2561F-1Y-A includes a base connection on the output transistor, enabling direct base drive control. The PS2561F-1Y-K-A uses standard transistor output. Both configurations are electrically compatible for applications using collector-emitter switching without base control.

Q: Are there packaging differences between these parts?

A: Both components use identical 4-DIP (0.300", 7.62mm) through-hole packaging. The PS2561F-1Y-A is supplied in tube packaging, while the PS2561F-1Y-K-A packaging type was not specified. Pin configuration and PCB footprint are identical.

Q: What is the significance of the rise/fall time difference?

A: The PS2561F-1Y-A specifies 3µs rise time compared to 5µs for the PS2561F-1Y-K-A. The 7µs fall time is identical. This faster rise time in the substitute part does not affect compatibility and may provide improved switching performance in time-sensitive applications.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the PS2561F-1Y-K-A and PS2561F-1Y-A are ROHS3 compliant and REACH unaffected. Both carry MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

Q: Why is the PS2561F-1Y-K-A discontinued?

A: The PS2561F-1Y-K-A is discontinued at DiGi Electronics. The PS2561F-1Y-A remains in active production from Renesas Electronics Corporation, providing a supported alternative for new procurement and design continuity.