PS9821-2-F3-AX Equivalent & Substitute Parts

Part Overview

The PS9821-2-F3-AX is a logic output optoisolator manufactured by Renesas Electronics Corporation (formerly CEL). This 2-channel, 2500Vrms isolation device operates at 15Mbps data rate with open collector output configuration in an 8-SSOP package. The part is designed for applications requiring high-speed galvanic isolation with common mode transient immunity of 15kV/µs.

The PS9821-2-F3-AX maintains active product status with Cut Tape (CT) & Digi-Reel® packaging. Equivalent and substitute parts are necessary for design flexibility, supply chain continuity, and application-specific requirements such as packaging format or voltage supply specifications.

Substiute Parts

PS9821-2-F3-AX

CELIn Stock: 1517PS9821-2-F3-AX Datasheet

Current PartRFQ

PS9821-2-AX

Renesas Electronics CorporationIn Stock: 2249PS9821-2-AX Datasheet

DirectRFQ

PS9821-2-F3-AX

Renesas Electronics CorporationIn Stock: 1505PS9821-2-F3-AX Datasheet

DirectRFQ

PS9817A-2-AX

Renesas Electronics CorporationIn Stock: 1949PS9817A-2-AX Datasheet

SimilarRFQ

PS9817A-2-F3-AX

Renesas Electronics CorporationIn Stock: 1801PS9817A-2-F3-AX Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the PS9821-2-F3-AX is based on the following critical parameters that must remain constant across equivalent parts:

Mandatory Matching Parameters:

• Number of Channels: 2
• Voltage - Isolation: 2500Vrms
• Output Type: Open Collector
• Current - Output / Channel: 25 mA
• Common Mode Transient Immunity (Min): 15kV/µs
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Supplier Device Package: 8-SSOP
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount

Flexible Parameters (may vary):

• Data Rate (15Mbps vs. 10Mbps)
• Voltage - Supply (2.7V ~ 3.6V vs. 4.5V ~ 5.5V)
• Packaging Format (Cut Tape vs. Bulk)
• Product Status (Active vs. Not For New Designs)

The PS9821-2-F3-AX has two direct equivalents that maintain all mandatory parameters with identical specifications. The PS9817A series represents similar parts with reduced data rate performance and different supply voltage requirements.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (PS9821 Series):

PS9821-2-AX and PS9821-2-F3-AX are functionally identical with identical electrical specifications. Selection between these two parts depends on packaging requirements:

• PS9821-2-F3-AX: Cut Tape (CT) & Digi-Reel® packaging format. Active product status. Suitable for automated assembly and reel-based pick-and-place operations.
• PS9821-2-AX: Bulk packaging format. Active product status. Suitable for manual assembly or applications with lower volume requirements.

Both parts maintain full compliance with ROHS3 and REACH standards with MSL 1 rating.

Similar Parts (PS9817A Series):

PS9817A-2-F3-AX and PS9817A-2-AX operate at reduced data rate (10Mbps versus 15Mbps) and require different supply voltage (4.5V ~ 5.5V versus 2.7V ~ 3.6V). These parts are suitable only for applications where 10Mbps data rate is sufficient and supply voltage compatibility exists.

PS9817A-2-AX carries "Not For New Designs" status and should not be selected for new product development. PS9817A-2-F3-AX maintains active status and is available in Cut Tape format.

All substitute parts maintain identical isolation voltage, output current, CMTI, package dimensions, and temperature range specifications.

Frequently Asked Questions (FAQ)

Q: Can PS9821-2-AX replace PS9821-2-F3-AX in production?

A: Yes. Both parts are electrically identical with matching specifications across all critical parameters. The difference is packaging format: PS9821-2-AX uses Bulk packaging while PS9821-2-F3-AX uses Cut Tape (CT) & Digi-Reel® format. Selection depends on assembly process requirements and supply chain logistics.

Q: What is the key difference between PS9821 and PS9817A series?

A: The PS9821 series operates at 15Mbps data rate with 2.7V ~ 3.6V supply voltage. The PS9817A series operates at 10Mbps data rate with 4.5V ~ 5.5V supply voltage. All other parameters including isolation voltage, output current, CMTI, and package dimensions remain identical. Selection depends on application data rate requirements and available supply voltage.

Q: Is PS9817A-2-AX suitable for new designs?

A: No. PS9817A-2-AX carries "Not For New Designs" product status. For new product development, use PS9817A-2-F3-AX (active status) if 10Mbps data rate and 4.5V ~ 5.5V supply voltage are compatible with your application.

Q: Are all substitute parts in the same package?

A: Yes. All parts listed use 8-SOIC (0.154", 3.90mm Width) package with 8-SSOP supplier device package designation. Pin count, footprint, and PCB layout compatibility are identical across all parts.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. All parts operate across -40°C ~ 85°C temperature range.

Q: Can I use PS9821-2-F3-AX in applications designed for PS9817A-2-F3-AX?

A: Yes, with supply voltage verification. PS9821-2-F3-AX operates at 2.7V ~ 3.6V while PS9817A-2-F3-AX operates at 4.5V ~ 5.5V. If your application uses 2.7V ~ 3.6V supply voltage, PS9821-2-F3-AX provides higher data rate performance (15Mbps versus 10Mbps) with identical isolation, output current, and package specifications.