PS9821-2-F3-A Equivalent & Substitute Parts

Part Overview

The PS9821-2-F3-A is a 2-channel logic output optoisolator manufactured by CEL, designed for galvanic isolation applications requiring 2500Vrms isolation voltage and 15 kV/µs common mode transient immunity. This part operates at 15 Mbps data rate with open collector output configuration in an 8-SSOP package. The main part number is classified as obsolete, necessitating identification of equivalent and substitute parts for continued design implementation and procurement.

Substiute Parts

PS9821-2-F3-A

CELIn Stock: 6537PS9821-2-F3-A 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 of optoisolators is determined by conformance to electrical and mechanical parameters including isolation voltage, number of channels, output type, data rate, supply voltage range, propagation delay, CMTI rating, and package configuration. The substitute parts are grouped based on these criteria:

Direct Substitutes (Identical Electrical Performance):

• PS9821-2-AX (Renesas Electronics Corporation)
• PS9821-2-F3-AX (Renesas Electronics Corporation)

These parts maintain identical specifications across all key parameters: 2500Vrms isolation, 15 Mbps data rate, 2.7V ~ 3.6V supply voltage, 15 kV/µs CMTI, and identical propagation delays. Differentiation is by product status and packaging configuration only.

Similar Substitutes (Reduced Performance Specification):

• PS9817A-2-AX (Renesas Electronics Corporation)
• PS9817A-2-F3-AX (Renesas Electronics Corporation)

These parts maintain identical isolation voltage, CMTI, number of channels, and package configuration, but operate at 10 Mbps data rate (reduced from 15 Mbps) and require 4.5V ~ 5.5V supply voltage (different from 2.7V ~ 3.6V requirement).

Parameter Comparison

Engineering Selection Recommendations

For Direct Electrical Equivalence: PS9821-2-AX and PS9821-2-F3-AX are direct functional equivalents to PS9821-2-F3-A. Both parts are manufactured by Renesas Electronics Corporation and carry Active product status, eliminating obsolescence risk. Both are ROHS3 compliant and REACH unaffected, suitable for compliance-critical applications. Selection between PS9821-2-AX (Bulk packaging) and PS9821-2-F3-AX (Cut Tape & Digi-Reel packaging) depends on procurement and assembly requirements.

For Supply Voltage Compatibility Verification: PS9817A-2-AX and PS9817A-2-F3-AX require supply voltage in the range 4.5V ~ 5.5V, which differs from the 2.7V ~ 3.6V specification of PS9821-2-F3-A. Application of these parts is contingent on circuit design compatibility with their increased supply voltage requirement. PS9817A-2-F3-AX carries Active product status and ROHS3 compliance; PS9817A-2-AX carries Not For New Designs status and is not recommended for new circuit implementations.

Frequently Asked Questions (FAQ)

Q: Can PS9821-2-AX directly replace PS9821-2-F3-A? A: PS9821-2-AX is a direct electrical equivalent with identical specifications across isolation voltage, data rate, CMTI, output type, and supply voltage requirements. Substitution is valid for applications where the Bulk packaging is compatible with procurement and assembly processes.

Q: What is the difference between PS9821-2-AX and PS9821-2-F3-AX? A: Both parts are electrically identical. The differentiation is packaging configuration: PS9821-2-AX is supplied in Bulk format, while PS9821-2-F3-AX is supplied in Cut Tape (CT) & Digi-Reel format. Selection depends on assembly line requirements.

Q: Are PS9817A parts suitable replacements? A: PS9817A-2-AX and PS9817A-2-F3-AX maintain isolation voltage, CMTI, channel count, and package configuration, but operate at 10 Mbps (reduced from 15 Mbps) and require 4.5V ~ 5.5V supply voltage. Substitution is valid only if the application circuit supports this higher supply voltage requirement and can operate at the reduced 10 Mbps data rate.

Q: Why is REACH and RoHS status relevant? A: The original PS9821-2-F3-A is REACH Affected, while all Renesas substitute parts are REACH Unaffected. This difference affects regulatory compliance in specific markets. ROHS3 compliance status is relevant for electrical and electronic equipment manufacturing subject to RoHS Directive requirements.

Q: Should PS9817A-2-AX be selected for new designs? A: PS9817A-2-AX carries Not For New Designs status and should not be selected for new circuit development. PS9817A-2-F3-AX, with Active product status and ROHS3 compliance, is the preferred alternative from the PS9817A family if supply voltage compatibility is confirmed.

This reference page is ready for direct integration into a web Markdown editor and provides comprehensive technical guidance for component selection based on the provided specifications.