PS9817-1-A Equivalent & Substitute Parts

Part Overview

The PS9817-1-A is a Logic Output Optoisolator with 2500Vrms isolation, 10Mbps data rate, and open collector output in 8-SSOP packaging. This component is classified as Obsolete, making it necessary to identify direct substitutes or compatible alternatives for new designs and ongoing maintenance applications. The part operates across a -40°C to 85°C temperature range with 15kV/µs common mode transient immunity, suitable for industrial isolation and signal conditioning applications.

Substiute Parts

PS9817-1-A

CELIn Stock: 805PS9817-1-A Datasheet

Current PartRFQ

PS9817A-1-AX

Renesas Electronics CorporationIn Stock: 1283PS9817A-1-AX Datasheet

DirectRFQ

PS9817A-1-F3-AX

Renesas Electronics CorporationIn Stock: 32294PS9817A-1-F3-AX Datasheet

DirectRFQ

PS9821-1-F3-AX

Renesas Electronics CorporationIn Stock: 1437PS9821-1-F3-AX Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PS9817-1-A is determined by electrical and mechanical compatibility across the following critical parameters:

Primary Substitution Criteria:

• Isolation voltage: 2500Vrms
• Output configuration: Open collector
• Number of channels: 1
• Common mode transient immunity: 15kV/µs minimum
• Package: 8-SOIC / 8-SSOP form factor

Secondary Compatibility Factors:

• Data rate capability (minimum 10Mbps)
• Output current rating (25 mA)
• Supply voltage compatibility
• Operating temperature range (-40°C to 85°C)
• Propagation delay characteristics (75ns maximum)

The substitutes are grouped into two categories: Direct Substitutes maintain all primary and secondary parameters at identical specifications, while Similar Substitutes may exceed minimum data rate requirements or operate at different supply voltages while maintaining core isolation and safety characteristics.

Parameter Comparison

Engineering Selection Recommendations

PS9817A-1-AX is available as a direct substitute with all electrical and mechanical parameters matching the PS9817-1-A. This part is manufactured by Renesas Electronics and carries ROHS3 compliance with REACH Unaffected status, addressing regulatory improvements over the original CEL design. However, the product status remains "Not For New Designs," which may limit applicability in new system development.

PS9817A-1-F3-AX serves as the recommended primary substitute due to Active product status and identical electrical specifications to the PS9817-1-A. This part maintains the 4.5V ~ 5.5V supply voltage range and all isolation, data rate, and timing characteristics. ROHS3 compliance and REACH Unaffected certification provide improved regulatory positioning for manufacturing and deployment.

PS9821-1-F3-AX is a compatible alternative that exceeds the minimum 10Mbps data rate specification with 15Mbps capability. This part operates at a reduced supply voltage range of 2.7V ~ 3.6V, which may require circuit redesign depending on available power rails. The increased data rate provides margin for higher-speed applications while maintaining all other critical isolation and safety parameters.

Frequently Asked Questions (FAQ)

Q: Can PS9817A-1-AX be used as a direct replacement for PS9817-1-A? A: Yes. Both parts share identical electrical specifications including 2500Vrms isolation, 10Mbps data rate, 25mA output current, and 8-SOIC packaging. The primary consideration is that PS9817A-1-AX carries "Not For New Designs" status, though it functions equivalently in existing applications.

Q: What is the key difference between PS9817A-1-F3-AX and PS9821-1-F3-AX? A: The PS9821-1-F3-AX provides 15Mbps data rate compared to 10Mbps in PS9817A-1-F3-AX. Additionally, PS9821-1-F3-AX operates at 2.7V ~ 3.6V supply voltage versus 4.5V ~ 5.5V for the PS9817A variants. Both maintain identical isolation voltage, output type, and common mode transient immunity.

Q: Are there packaging differences between the substitutes? A: All three substitutes use the same 8-SOIC package footprint. Packaging options differ in tape/reel configuration: PS9817A-1-AX is available in Bulk, PS9817A-1-F3-AX in Cut Tape & Digi-Reel, and PS9821-1-F3-AX in Tape & Reel formats.

Q: Why does the PS9821-1-F3-AX have a different supply voltage? A: The PS9821-1-F3-AX is designed for lower-voltage applications and systems operating from 2.7V ~ 3.6V rails, which is common in modern digital logic and portable equipment. Circuit redesign or voltage conversion may be required if the existing PS9817-1-A application relies on 5V supply levels.

Q: Which substitute should be selected for new designs? A: PS9817A-1-F3-AX is the recommended choice, as it holds Active product status and offers identical electrical performance to the PS9817-1-A while providing ROHS3 and REACH compliance improvements. For higher-speed requirements in low-voltage applications, PS9821-1-F3-AX is suitable if the 2.7V ~ 3.6V supply voltage is compatible with the system design.

Q: Are all substitutes certified for the same operating temperature range? A: Yes. All three substitute parts maintain the -40°C to 85°C operating temperature range of the original PS9817-1-A, ensuring compatibility in industrial and commercial temperature environments.