PS2561DL2-1Y-V-F3-H-A Optoisolator - Equivalent & Substitute Parts

Part Overview

The PS2561DL2-1Y-V-F3-H-A is a 5000Vrms isolation optoisolator with transistor output manufactured by CEL. This component is discontinued at DiGi Electronics, necessitating evaluation of substitute parts to maintain supply chain continuity and design compatibility. The part serves as an electrical isolation interface in single-channel applications requiring high voltage isolation with transistor-based output control.

Substiute Parts

PS2561DL2-1Y-V-F3-H-A

CELIn Stock: 1145PS2561DL2-1Y-V-F3-H-A Datasheet

Current PartRFQ

LTV-816S

Lite-On Inc.In Stock: 1997LTV-816S Datasheet

SimilarRFQ

LTV-816S-TA1

Lite-On Inc.In Stock: 6388LTV-816S-TA1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitutes are identified based on strict electrical and mechanical parameter alignment. The following parameters determine substitution validity:

Critical Parameters for Substitution:

• Voltage - Isolation: 5000Vrms (must match)
• Number of Channels: 1 (must match)
• Output Type: Transistor (must match)
• Package / Case: 4-SMD, Gull Wing (must match)
• Mounting Type: Surface Mount (must match)
• Voltage - Output (Max): 80V (must match)
• Current - Output / Channel: 50mA (must match)

Parameters Allowing Variation Within Design Tolerance:

• Current Transfer Ratio: Range variation acceptable within circuit design margins
• Vce Saturation: Minor variations acceptable within switching loss budgets
• Operating Temperature: Extended operating range acceptable if application requirements fall within specified limits
• RoHS/REACH compliance: Equivalency maintained across compliant parts

Parameter Comparison

Engineering Selection Recommendations

Both LTV-816S and LTV-816S-TA1 substitute parts are manufactured by Lite-On Inc. and carry Active product status, ensuring continued availability and support. Both parts are ROHS3 Compliant and REACH Unaffected, matching the compliance profile of the original PS2561DL2-1Y-V-F3-H-A.

LTV-816S (Tube Packaging): Select for applications where standard tube packaging aligns with assembly processes and inventory management requirements.

LTV-816S-TA1 (Tape & Reel Packaging): Select for high-volume automated assembly lines where tape and reel (TR) packaging provides superior handling efficiency and reduced component damage during placement.

Both substitutes meet all critical electrical and mechanical parameters. The primary selection criterion is packaging format aligned to manufacturing process requirements.

Frequently Asked Questions (FAQ)

Q: Can LTV-816S or LTV-816S-TA1 replace PS2561DL2-1Y-V-F3-H-A in existing designs?

A: Yes, both substitute parts maintain electrical and mechanical compatibility across all critical parameters including isolation voltage (5000Vrms), output type (transistor), voltage output capability (80V), current output (50mA), and package form factor (4-SMD, Gull Wing). Pin-for-pin compatibility and functional equivalency are established.

Q: What is the difference between LTV-816S and LTV-816S-TA1?

A: The two parts are electrically and functionally identical. The difference is packaging format: LTV-816S is supplied in Tube packaging, while LTV-816S-TA1 is supplied in Tape & Reel (TR) packaging. Selection depends on manufacturing process requirements and inventory handling procedures.

Q: How do Current Transfer Ratio differences affect circuit design?

A: The LTV-816 series exhibits a wider Current Transfer Ratio range (50% to 600% @ 5mA) compared to the PS2561DL2 (80% to 160% @ 5mA). This broader tolerance range requires verification that circuit design accommodates the full range of transistor gain variation. Designs tolerant of higher gain variation directly benefit from the LTV-816 series, while gain-sensitive applications require input current adjustment analysis.

Q: What temperature operating range difference should be considered?

A: The PS2561DL2-1Y-V-F3-H-A operates from -55°C to 110°C, while substitute parts (LTV-816S and LTV-816S-TA1) operate from -50°C to 110°C. Applications requiring operation below -50°C require design modifications or alternative component selection. Applications within the -50°C to 110°C range are unaffected.

Q: Is Vce Saturation difference significant?

A: The LTV-816 series exhibits lower Vce Saturation (200mV maximum) compared to the PS2561DL2 (300mV maximum). This improvement reduces switching losses and improves efficiency in transistor output circuits. Designs accommodating the original 300mV specification directly benefit from the lower saturation voltage of substitute parts with no design modification required.