PS2841-4B-AX Equivalent & Substitute Parts

Part Overview

The PS2841-4B-AX is a 4-channel optoisolator with transistor output manufactured by Renesas Electronics Corporation. It provides 1500Vrms isolation voltage and is designed for applications requiring galvanic isolation in signal transmission. The part is classified as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent substitute parts is necessary for ongoing production support, maintenance applications, and legacy system replacements where this component remains in use.

Substiute Parts

PS2841-4B-AX

Renesas Electronics CorporationIn Stock: 1208PS2841-4B-AX Datasheet

Current PartRFQ

PS2841-4A-F3-AX

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS2841-4B-AX is determined by strict equivalence across the following critical parameters:

• Number of Channels: 4 channels (fixed requirement)
• Voltage - Isolation: 1500Vrms (fixed requirement)
• Output Type: Transistor output (fixed requirement)
• Current Transfer Ratio: 100% (Min) to 400% (Max) @ 1mA (fixed requirement)
• Voltage - Output (Max): 70V (fixed requirement)
• Current - Output / Channel: 20mA (fixed requirement)
• Package / Case: 12-BSOP form factor (fixed requirement)
• Mounting Type: Surface Mount (fixed requirement)

The PS2841-4A-F3-AX meets all these criteria and is therefore a direct functional equivalent. The primary difference is packaging format (Bulk vs. Tape & Reel) and product status (Not For New Designs vs. Active).

Parameter Comparison

Engineering Selection Recommendations

The PS2841-4A-F3-AX is a direct substitute for the PS2841-4B-AX. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The PS2841-4A-F3-AX carries Active product status, making it the preferred choice for applications requiring ongoing component availability and supply chain continuity. The difference in packaging format (Tape & Reel vs. Bulk) affects procurement and handling but does not impact electrical or mechanical compatibility. Selection between these parts should be based on packaging requirements and inventory management practices.

Frequently Asked Questions (FAQ)

Q: Can PS2841-4A-F3-AX replace PS2841-4B-AX in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The 12-BSOP package footprint, pin configuration, and electrical characteristics are identical.

Q: What is the difference between Bulk and Tape & Reel packaging?

A: Bulk packaging supplies loose components, while Tape & Reel (TR) packaging provides components on continuous tape for automated assembly. Both formats contain the same component; the difference is in handling and procurement method.

Q: Why is PS2841-4B-AX marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status. Renesas recommends using PS2841-4A-F3-AX for new applications. Existing designs using PS2841-4B-AX can continue operation with this part as a direct substitute.

Q: Are there any compliance differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited).

Q: What are the critical parameters for substitution?

A: The following parameters must match for substitution: 4 channels, 1500Vrms isolation voltage, transistor output type, 100-400% current transfer ratio, 70V maximum output voltage, 20mA per-channel output current, 12-BSOP package, and surface mount configuration.