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

Part Overview

The PS2711-1-F3-K-A is a single-channel optoisolator with transistor output manufactured by CEL. This component provides 3750Vrms isolation voltage and is designed for DC input applications requiring galvanic isolation in 4-SOP surface mount packaging. The PS2711-1-F3-K-A is discontinued at DiGi Electronics, necessitating identification of functionally equivalent substitute components for ongoing design requirements and production continuity.

Substiute Parts

PS2711-1-F3-K-A

CELIn Stock: 1155PS2711-1-F3-K-A Datasheet

Current PartRFQ

LTV-357T

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS2711-1-F3-K-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 (not MOSFET, not logic output)
• Input Type: DC
• Package / Case: 4-SMD, Gull Wing (physical and electrical compatibility)
• Mounting Type: Surface Mount

Allowable Parameter Variations:

• Current Transfer Ratio: May vary within component specifications
• Voltage - Output (Max): Substitute must meet or exceed 40V requirement
• Current - Output / Channel: Substitute must meet or exceed 40mA requirement
• Operating Temperature Range: Substitute must cover or exceed -55°C ~ 100°C range
• Rise / Fall Time: Variations acceptable if application timing requirements are met
• Vce Saturation: Lower values indicate improved performance

The LTV-357T from Lite-On Inc. satisfies all mandatory matching criteria and provides equivalent or superior electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility: The LTV-357T is a direct functional substitute for the PS2711-1-F3-K-A based on matching isolation voltage, channel count, output type, input type, and package configuration.

Critical Design Consideration: The LTV-357T has a maximum output voltage rating of 35V compared to the PS2711-1-F3-K-A at 40V. Applications requiring output voltages between 35V and 40V must be evaluated against the LTV-357T specification. If the application operates at or below 35V, this parameter presents no constraint.

Performance Advantages of LTV-357T:

• Superior Vce saturation voltage (200mV vs 300mV) reduces power dissipation
• Extended operating temperature range (-55°C to 110°C vs -55°C to 100°C)
• Higher output current capacity (50mA vs 40mA)
• Faster fall time (3µs vs 5µs)

Compliance Status: Both components are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. The LTV-357T maintains full regulatory equivalence with the discontinued PS2711-1-F3-K-A.

Availability: The LTV-357T is actively manufactured by Lite-On Inc. with substantial inventory availability (10,099 pieces in stock), ensuring production continuity and supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can the LTV-357T directly replace the PS2711-1-F3-K-A in existing PCB designs?

A: Yes, the LTV-357T is pin-compatible and functionally equivalent. Both components use 4-SMD, Gull Wing packaging with identical pinout. No PCB layout modifications are required. However, verify that your application does not require output voltages exceeding 35V.

Q: What is the significance of the different Current Transfer Ratio test conditions (1mA vs 5mA)?

A: Current Transfer Ratio is measured at different input currents for each component. The PS2711-1-F3-K-A is specified at 1mA input, while the LTV-357T is specified at 5mA input. These are manufacturer-specific test conditions and do not indicate incompatibility. Both components will function across their respective operating ranges.

Q: The LTV-357T has a lower maximum output voltage (35V vs 40V). Is this a problem?

A: This depends on your circuit design. If your application operates at output voltages of 35V or below, the LTV-357T is fully suitable. If your design requires operation between 35V and 40V, you must either modify the circuit to operate within 35V or identify an alternative substitute that maintains the 40V rating.

Q: Are there any thermal or reliability differences between these components?

A: The LTV-357T offers a wider operating temperature range (-55°C to 110°C vs -55°C to 100°C) and lower Vce saturation voltage (200mV vs 300mV). Lower saturation voltage reduces power dissipation and heat generation, which can improve reliability in thermally constrained applications.

Q: What is the lead time and availability for the LTV-357T?

A: The LTV-357T is an active product with 10,099 pieces in stock. Availability and lead times should be confirmed with your component supplier, as inventory levels fluctuate.

Q: Do both components require the same PCB footprint?

A: Yes. Both the PS2711-1-F3-K-A and LTV-357T use 4-SMD, Gull Wing packaging. The footprint is identical, and no PCB redesign is necessary for substitution.

Q: Are there any differences in moisture sensitivity or handling requirements?

A: Both components have Moisture Sensitivity Level (MSL) 1, classified as Unlimited. This indicates no special moisture control measures are required during storage or handling.