PS2811-1-A Optoisolator Equivalent & Substitute Parts

Part Overview

The PS2811-1-A is a single-channel optoisolator with transistor output manufactured by CEL, designed for 2500Vrms isolation applications. This component features a 4-SOIC package and is rated for 40mA output current with a maximum output voltage of 40V. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent substitute components that maintain electrical and mechanical compatibility for ongoing system support and new designs.

Substiute Parts

PS2811-1-A

CELIn Stock: 69330PS2811-1-A Datasheet

Current PartRFQ

PS2811-1-V-A

Renesas Electronics CorporationIn Stock: 2376PS2811-1-V-A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS2811-1-A is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Voltage isolation rating: 2500Vrms
• Number of channels: 1
• Current transfer ratio range: 100% to 400% @ 1mA
• Output type: Transistor
• Maximum output voltage: 40V
• Maximum output current per channel: 40mA
• Vce saturation: 300mV maximum
• Operating temperature range: -55°C to 100°C

Mechanical Equivalence Criteria:

• Package type: 4-SOIC with 0.173" (4.40mm) width
• Mounting type: Surface Mount
• Supplier device package: 4-SSOP

Compliance Equivalence Criteria:

• RoHS3 compliance
• REACH unaffected status

The PS2811-1-V-A manufactured by Renesas Electronics Corporation meets all specified electrical, mechanical, and compliance parameters and is classified as an active product with current inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The PS2811-1-V-A manufactured by Renesas Electronics Corporation is a direct electrical and mechanical equivalent to the discontinued PS2811-1-A. Selection of the Renesas variant is supported by the following factors:

Product Availability: The PS2811-1-V-A maintains active product status with current inventory of 2310 pieces, ensuring supply chain continuity for new designs and replacement applications.

Compliance Certification: Both components carry identical RoHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications.

Electrical Performance: All critical electrical parameters including isolation voltage, current transfer ratio, output voltage and current ratings, and saturation characteristics are identical between the two parts.

Mechanical Compatibility: The 4-SOIC package dimensions and surface mount configuration are identical, enabling direct PCB layout compatibility without redesign.

Thermal Performance: Operating temperature range of -55°C to 100°C is maintained, supporting the same environmental application scope.

Frequently Asked Questions (FAQ)

Q: Can the PS2811-1-V-A be used as a direct replacement for PS2811-1-A in existing designs?

A: Yes. The PS2811-1-V-A is electrically and mechanically equivalent across all specified parameters. No circuit modifications or PCB layout changes are required for substitution.

Q: Are there differences in turn-on and turn-off timing between these parts?

A: The PS2811-1-A specifies turn-on and turn-off times as not specified (dash). The PS2811-1-V-A specifies 7µs turn-on and 5µs turn-off. Both parts share identical rise and fall times of 4µs and 5µs respectively. The additional timing specification in the Renesas part does not create incompatibility.

Q: What is the difference between the 4-SOIC and 4-SSOP package designations?

A: Both parts use the same physical package: 4-SOIC with 0.173" (4.40mm) width. The supplier device package designation (4-SSOP) refers to the same physical form factor. No package conversion is required.

Q: Does the packaging format difference (Strip vs. unspecified) affect compatibility?

A: No. Packaging format refers to the supply method (tape and reel, strip, tube, etc.) and does not affect electrical or mechanical compatibility. The PS2811-1-V-A supplied in strip format is functionally identical to the main part.

Q: Are both parts RoHS compliant?

A: Yes. Both the PS2811-1-A and PS2811-1-V-A are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the isolation voltage rating, and why is it important?

A: Both parts provide 2500Vrms isolation, which defines the maximum voltage differential that can be safely applied across the optoisolator's isolation barrier. This rating is critical for safety-critical and high-voltage applications.

Q: Can these parts be used interchangeably in high-speed switching applications?

A: Yes. Both parts share identical rise and fall times of 4µs and 5µs, supporting equivalent switching performance in high-frequency applications within the specified operating parameters.