PS2801A-1-A Equivalent & Substitute Parts

Part Overview

The PS2801A-1-A is a 2500Vrms optoisolator with transistor output, single channel configuration in 4-SOIC surface mount package. This component provides galvanic isolation for DC input signals with transistor-based output switching capability. The main part (CEL manufacturer) is discontinued at DiGi Electronics, necessitating identification of equivalent alternatives for ongoing production and maintenance applications.

Substiute Parts

PS2801A-1-A

CELIn Stock: 1889PS2801A-1-A Datasheet

Current PartRFQ

PS2801A-1-A

Renesas Electronics CorporationIn Stock: 1927PS2801A-1-A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS2801A-1-A is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Isolation voltage: 2500Vrms
• Number of channels: 1
• Output type: Transistor
• Current transfer ratio range: 50% to 400% @ 5mA
• Maximum output voltage: 70V
• Maximum output current: 30mA
• Vce saturation: 300mV maximum
• Rise/fall time: 5µs and 7µs

Mechanical Parameters (Must Match):

• Package type: 4-SOIC
• Physical dimensions: 0.173" width, 4.40mm width
• Mounting: Surface mount

Environmental Parameters (Must Match):

• Operating temperature range: -55°C to 100°C
• RoHS3 compliance
• Moisture sensitivity level: 1 (Unlimited)

The PS2801A-1-A from Renesas Electronics Corporation meets all specified parameters and qualifies as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The PS2801A-1-A from Renesas Electronics Corporation is a direct parametric equivalent to the discontinued CEL PS2801A-1-A. Both components share identical electrical specifications, mechanical packaging, and environmental compliance certifications.

Selection Basis:

The Renesas variant maintains full compatibility across all specified parameters: 2500Vrms isolation voltage, single-channel transistor output, 50-400% current transfer ratio, 70V maximum output voltage, and 30mA output current capability. Physical packaging is identical (4-SOIC, 0.173" width), enabling direct PCB footprint compatibility.

Both versions comply with RoHS3 requirements, carry MSL Level 1 (unlimited moisture sensitivity), and are unaffected by REACH regulations. Export classification (EAR99) is consistent between manufacturers.

The Renesas component carries "Not For New Designs" status, indicating it remains available for production and maintenance applications despite being phased out for new product development. This status does not affect functional equivalence or compatibility with existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the Renesas PS2801A-1-A directly replace the CEL PS2801A-1-A in existing designs?

A: Yes. Both components are parametrically identical across all electrical, mechanical, and environmental specifications. No circuit modifications are required. PCB footprints are identical (4-SOIC, 0.173" width).

Q: What determines whether a substitute optoisolator is compatible with PS2801A-1-A?

A: Compatibility requires matching across these critical parameters: 2500Vrms isolation voltage, single-channel configuration, transistor output type, 50-400% current transfer ratio at 5mA input, 70V maximum output voltage, 30mA maximum output current, 300mV maximum Vce saturation, and -55°C to 100°C operating temperature range. Package type (4-SOIC) and mounting method (surface mount) must also match.

Q: Does the "Not For New Designs" status of the Renesas part affect its use in production?

A: No. This status indicates the manufacturer is phasing out the component for new product development. It remains fully functional and available for production quantities and field replacements in existing applications.

Q: Are there any compliance differences between the CEL and Renesas versions?

A: No. Both versions are ROHS3 compliant, carry MSL Level 1 rating, are REACH unaffected, and share EAR99 export classification.

Q: What is the significance of the 4-SOIC package specification?

A: The 4-SOIC (Small Outline Integrated Circuit) package with 0.173" width and 4.40mm dimensions defines the physical footprint for PCB mounting. Both the CEL and Renesas variants use identical package dimensions, ensuring direct mechanical compatibility without PCB redesign.

Q: Can the current transfer ratio variation (50-400% @ 5mA) affect circuit design?

A: The current transfer ratio defines the relationship between input LED current and output transistor current. Both variants maintain the same 50-400% range at 5mA input, ensuring consistent circuit behavior across the specified operating window.