PS2711-1-F3-L-A Optoisolator Equivalent & Substitute Parts

Part Overview

The PS2711-1-F3-L-A is a high-voltage isolation optoisolator manufactured by CEL, designed for applications requiring galvanic isolation up to 3750Vrms. This component features a single transistor output channel in a 4-SOP surface mount package and is classified as discontinued at DiGi Electronics. Due to its discontinued status, identifying functionally compatible substitute parts is essential for ongoing design support and production continuity. The LTV-357T from Lite-On Inc. serves as an active alternative with comparable electrical and mechanical specifications.

Substiute Parts

PS2711-1-F3-L-A

CELIn Stock: 876PS2711-1-F3-L-A Datasheet

Current PartRFQ

LTV-357T

Lite-On Inc.In Stock: 10147LTV-357T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PS2711-1-F3-L-A is determined by the following critical parameters:

Mandatory Matching Criteria:

• Voltage - Isolation: 3750Vrms (exact match required)
• Number of Channels: 1 (single channel configuration)
• Output Type: Transistor (output topology)
• Package / Case: 4-SMD, Gull Wing (physical form factor)
• Mounting Type: Surface Mount (assembly compatibility)

Allowable Parameter Variation:

• Current Transfer Ratio: Substitute may differ from 150-300% @ 1mA specification
• Voltage - Output (Max): Substitute may vary (minimum 35V acceptable for most applications)
• Current - Output / Channel: Substitute may vary (minimum 40mA acceptable)
• Vce Saturation (Max): Substitute may vary (lower values acceptable)
• Operating Temperature Range: Substitute may extend range beyond -55°C ~ 100°C

The LTV-357T meets all mandatory matching criteria and qualifies as a direct substitute despite variations in current transfer ratio measurement conditions and output specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: LTV-357T

The LTV-357T is the recommended substitute for the discontinued PS2711-1-F3-L-A based on the following factors:

1. Isolation Voltage Match: Both components provide 3750Vrms isolation, meeting the core functional requirement.

2. Package and Mounting Compatibility: Identical 4-SMD, Gull Wing package and surface mount configuration enable direct PCB layout compatibility without redesign.

3. Product Status and Availability: The LTV-357T maintains active production status with 10,099 pieces in stock, ensuring supply chain continuity compared to the discontinued PS2711-1-F3-L-A.

4. Regulatory Compliance: Both components are ROHS3 compliant, REACH unaffected, and classified under identical ECCN and HTSUS codes, satisfying regulatory requirements.

5. Output Performance: The LTV-357T delivers superior Vce saturation (200mV vs. 300mV) and extended operating temperature range (-55°C ~ 110°C vs. -55°C ~ 100°C), providing performance advantages in thermal margin and low-temperature operation.

6. Output Specifications: The LTV-357T output current rating (50mA) exceeds the PS2711-1-F3-L-A (40mA), providing additional design margin. The maximum output voltage (35V vs. 40V) is lower but remains suitable for standard logic-level applications.

No additional design modifications are required for substitution. Direct component replacement is feasible within the specified electrical operating parameters.

Frequently Asked Questions (FAQ)

Q1: Can the LTV-357T be used as a direct replacement for the PS2711-1-F3-L-A without PCB modifications?

A: Yes. Both components share identical package geometry (4-SMD, Gull Wing), pin configuration, and mounting type (surface mount). No PCB layout changes are required for substitution.

Q2: What is the significance of the different current transfer ratio measurement conditions (1mA vs. 5mA)?

A: Current transfer ratio is measured at different input LED currents. The PS2711-1-F3-L-A specifies CTR at 1mA input, while the LTV-357T specifies CTR at 5mA input. These measurements reflect different operating points and are not directly comparable. Circuit design must account for the actual operating input current to determine effective CTR performance.

Q3: The LTV-357T has a lower maximum output voltage (35V vs. 40V). Does this limit its application range?

A: The 35V maximum output voltage of the LTV-357T is suitable for standard logic-level and low-voltage switching applications. Applications requiring output voltages above 35V would require circuit redesign or alternative component selection. Verify your specific output voltage requirements before substitution.

Q4: Why is the LTV-357T recommended despite the PS2711-1-F3-L-A having higher current transfer ratio specifications?

A: The PS2711-1-F3-L-A is discontinued, making it unavailable for new production. The LTV-357T provides equivalent isolation voltage, identical package form factor, and active manufacturing status. The CTR difference reflects measurement condition variation rather than fundamental performance incompatibility. Circuit design should be validated against actual operating conditions for both components.

Q5: Are there any compliance or certification differences between these components?

A: No. Both components are ROHS3 compliant, REACH unaffected, and share identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications. Regulatory requirements are satisfied by either component.

Q6: What is the moisture sensitivity level for both components?

A: Both the PS2711-1-F3-L-A and LTV-357T are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply.