PS2561-1-A Optoisolator 5KV Transistor Output Equivalent & Substitute Parts

Part Overview

The PS2561-1-A is a high-voltage optoisolator with transistor output, rated for 5000Vrms isolation voltage. This component provides electrical isolation between input and output circuits using an internal light-coupled mechanism. The main part (CEL manufacturer) is discontinued at DiGi Electronics, necessitating evaluation of functionally equivalent alternatives to maintain circuit continuity and support ongoing system designs.

Substiute Parts

PS2561-1-A

CELIn Stock: 26375PS2561-1-A Datasheet

Current PartRFQ

PS2561-1-A

Renesas Electronics CorporationIn Stock: 26390PS2561-1-A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The PS2561-1-A has been identified as having an equivalent substitute within the NEPOC series from Renesas Electronics Corporation. This substitution is valid based on the following criteria:

Critical Parameters for Substitution:

• Voltage - Isolation: 5000Vrms (identical)
• Number of Channels: 1 (identical)
• Output Type: Transistor (identical)
• Current Transfer Ratio Range: 80% - 400% @ 5mA (identical)
• Voltage - Output (Max): 80V (identical)
• Current - Output / Channel: 50mA (identical)
• Vce Saturation (Max): 300mV (identical)
• Rise / Fall Time: 3µs, 5µs (identical)
• Operating Temperature Range: -55°C ~ 100°C (identical)
• Package / Case: 4-DIP (0.300", 7.62mm) (identical)
• Mounting Type: Through Hole (identical)
• Voltage - Forward (Vf): 1.17V (identical)
• Current - DC Forward (If) (Max): 80mA (identical)
• Input Type: DC (identical)

The substitute part maintains all functional and physical parameters necessary for direct drop-in replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The Renesas Electronics Corporation PS2561-1-A serves as a parametric equivalent to the discontinued CEL variant. Both versions carry identical electrical specifications, physical packaging, and environmental compliance certifications (ROHS3 and REACH).

The key differentiator is product lifecycle status: the CEL version is discontinued at DiGi Electronics, while the Renesas version is marked as "Not For New Designs." For legacy system maintenance or replacement applications, the Renesas variant provides continued component availability with guaranteed electrical and mechanical compatibility.

Both variants are available in tube packaging and support through-hole mounting in 4-DIP configurations. Component selection should be based on current inventory availability and supply chain considerations, as all functional parameters are equivalent.

Frequently Asked Questions (FAQ)

Q: Are the CEL and Renesas versions of PS2561-1-A truly interchangeable? A: Both part numbers carry identical electrical and mechanical specifications across all critical parameters: isolation voltage (5000Vrms), current transfer ratio (80%-400%), output voltage (80V max), output current (50mA), and operating temperature range (-55°C to 100°C). The 4-DIP package dimensions and through-hole mounting characteristics are identical, enabling direct substitution in existing PCB designs.

Q: Why does the product status differ between manufacturers? A: The CEL version is discontinued at DiGi Electronics, indicating end-of-life status at that distributor. The Renesas version is marked "Not For New Designs," which reflects manufacturing lifecycle decisions but does not affect functional equivalence for replacement applications.

Q: Are there packaging differences between the two versions? A: The CEL variant uses unspecified packaging, while the Renesas version is supplied in tube packaging. Both conform to the identical 4-DIP (0.300", 7.62mm) case outline and support through-hole mounting, ensuring compatibility with existing footprints.

Q: Do both versions maintain ROHS3 compliance? A: Both the CEL and Renesas versions are ROHS3 compliant with Moisture Sensitivity Level 1 (unlimited moisture exposure tolerance) and REACH-affected status. Regulatory compliance is equivalent across both alternatives.

Q: What are the critical parameters that determine substitution validity? A: Substitution validity for optoisolator components depends on matching isolation voltage (5000Vrms), number of channels (1), output type (transistor), current transfer ratio range (80%-400%), maximum output voltage (80V), output current capacity (50mA), saturation voltage (300mV), rise/fall time characteristics (3µs, 5µs), operating temperature range (-55°C to 100°C), and physical packaging (4-DIP through-hole).