PS2841-4A-F3-A Equivalent & Substitute Parts

Part Overview

The PS2841-4A-F3-A is a 4-channel optoisolator with transistor output, rated for 1500Vrms isolation voltage. Manufactured by CEL, this component is classified as obsolete, necessitating the identification of active equivalent alternatives to maintain supply chain continuity and ensure long-term component availability for new designs and legacy system maintenance.

Substiute Parts

PS2841-4A-F3-A

CELIn Stock: 1004PS2841-4A-F3-A Datasheet

Current PartRFQ

PS2841-4A-F3-AX

Renesas Electronics CorporationIn Stock: 1595PS2841-4A-F3-AX Datasheet

Parametric EquivalentRFQ

PS2841-4B-F3-AX

Renesas Electronics CorporationIn Stock: 1317PS2841-4B-F3-AX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS2841-4A-F3-A is based on strict parameter matching in the following categories:

Electrical Parameters:

• Number of Channels: 4
• Voltage - Isolation: 1500Vrms
• Current Transfer Ratio (Min): 100% @ 1mA
• Current Transfer Ratio (Max): 400% @ 1mA
• Output Type: Transistor
• Voltage - Output (Max): 70V
• Current - Output / Channel: 20mA
• Vce Saturation (Max): 300mV
• Rise / Fall Time (Typ): 20µs, 110µs
• Operating Temperature: -40°C ~ 100°C
• Input Type: DC

Mechanical Parameters:

• Package / Case: 12-BSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitute parts maintain identical electrical and mechanical specifications, ensuring direct functional compatibility within existing circuit topologies and printed circuit board layouts.

Parameter Comparison

Engineering Selection Recommendations

PS2841-4A-F3-AX (Renesas Electronics Corporation) and PS2841-4B-F3-AX (Renesas Electronics Corporation) are the primary equivalents for the obsolete PS2841-4A-F3-A. Both substitutes are active products with superior supply availability and enhanced compliance status.

The Renesas alternatives provide ROHS3 compliance, whereas the original CEL part does not specify RoHS certification. Additionally, the Renesas parts carry REACH Unaffected status, eliminating regulatory concerns associated with the original REACH Affected designation.

For new designs and legacy system replacements, both PS2841-4A-F3-AX and PS2841-4B-F3-AX deliver identical electrical performance and mechanical compatibility. The selection between these two Renesas variants should be based on supplier availability, lead time, and packaging requirements, as all critical functional and dimensional parameters are equivalent.

Frequently Asked Questions (FAQ)

Q: Are PS2841-4A-F3-AX and PS2841-4B-F3-AX functionally identical in circuit operation? A: Both parts deliver identical electrical performance across all specified parameters including isolation voltage, current transfer ratio, output voltage, and timing characteristics. They are direct functional equivalents.

Q: Does the package footprint remain unchanged across these optoisolator part numbers? A: All three parts use the 12-BSOP package with identical dimensions (0.173" width, 4.40mm). PCB layout modifications are not required when substituting between these parts.

Q: What is the difference between the PS2841-4A-F3-A and PS2841-4A-F3-AX designations? A: The suffix "-AX" indicates packaging in Tape & Reel format with updated compliance certifications. The core silicon and electrical specifications remain identical.

Q: Are there supply chain advantages to selecting PS2841-4B-F3-AX over PS2841-4A-F3-AX? A: Current inventory levels show PS2841-4A-F3-AX at 1502 pieces and PS2841-4B-F3-AX at 1274 pieces. Selection should be based on lead time requirements and supplier stock status, as electrical parameters are equivalent.

Q: Does REACH Unaffected status affect design compliance for the Renesas substitutes? A: REACH Unaffected status for PS2841-4A-F3-AX and PS2841-4B-F3-AX eliminates regulatory restrictions associated with the original REACH Affected designation, simplifying compliance documentation for end-use applications.

Q: Can PS2841-4A-F3-AX and PS2841-4B-F3-AX be used interchangeably in existing assemblies designed for PS2841-4A-F3-A? A: Yes. Identical electrical characteristics, package specifications, and thermal operating ranges ensure direct pin-for-pin and functional compatibility in all circuit configurations.