PS9817A-1-AX Equivalent & Substitute Parts

Part Overview

The PS9817A-1-AX is a Logic Output Optoisolator from the NEPOC series, manufactured by Renesas Electronics Corporation (formerly CEL). This component provides 2500Vrms isolation with 10Mbps data rate capability, designed for DC input applications requiring galvanic isolation in 8-SSOP surface mount packaging. The PS9817A-1-AX has been discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain functional and electrical compatibility for ongoing system support and new production requirements.

Substiute Parts

PS9817A-1-AX

CELIn Stock: 773PS9817A-1-AX 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

Equivalent and substitute parts for the PS9817A-1-AX are determined by strict adherence to the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage Isolation: 2500Vrms
• Common Mode Transient Immunity (Min): 15kV/µs
• Output Type: Open Collector
• Current - Output / Channel: 25 mA
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Number of Channels: 1

Secondary Compatibility Considerations:

• Input Type: DC
• Operating Temperature: -40°C ~ 85°C
• RoHS Status: ROHS3 Compliant
• Propagation Delay characteristics
• Rise / Fall Time specifications

Parts are classified as either Direct Equivalents (identical electrical specifications across all parameters) or Similar Substitutes (functionally compatible with acceptable variations in data rate and supply voltage ranges).

Parameter Comparison

Engineering Selection Recommendations

PS9817A-1-F3-AX (Direct Equivalent): This part is the preferred substitute for the discontinued PS9817A-1-AX. It maintains identical electrical specifications across all critical parameters including isolation voltage, CMTI, data rate, output current, and timing characteristics. The packaging differs only in form factor (Cut Tape & Digi-Reel versus bulk), but mechanical compatibility is preserved. Product status is Active, and ROHS3 compliance is maintained. This part is available in quantities exceeding 32,000 units.

PS9821-1-F3-AX (Similar Substitute): This component serves as a compatible alternative when higher data rate capability is beneficial. It provides identical isolation voltage, CMTI, and output characteristics to the PS9817A-1-AX. The primary differences are 15Mbps data rate (versus 10Mbps) and a narrower supply voltage range (2.7V ~ 3.6V versus 4.5V ~ 5.5V). Substitution is valid only for applications where the lower supply voltage range is acceptable. Product status is Active with ROHS3 compliance maintained.

Selection between these substitutes is determined by supply voltage requirements: PS9817A-1-F3-AX for 4.5V ~ 5.5V systems, and PS9821-1-F3-AX for 2.7V ~ 3.6V systems with higher performance tolerance.

Frequently Asked Questions (FAQ)

Q: Can PS9817A-1-F3-AX replace PS9817A-1-AX directly in production? A: Yes. The PS9817A-1-F3-AX is electrically and mechanically equivalent. The only difference is packaging format. Both are NEPOC series devices with identical isolation voltage (2500Vrms), CMTI (15kV/µs), data rate (10Mbps), output current (25 mA), and thermal specifications. Pin configuration and performance characteristics are identical.

Q: What is the key difference between PS9817A-1-F3-AX and PS9821-1-F3-AX? A: Both devices maintain 2500Vrms isolation and 15kV/µs CMTI. The PS9821-1-F3-AX supports higher data rate (15Mbps versus 10Mbps) but operates at a lower supply voltage range (2.7V ~ 3.6V versus 4.5V ~ 5.5V). Selection depends on your system voltage requirements. Do not use PS9821-1-F3-AX in 5V systems without voltage regulation.

Q: Are all three parts in the same physical package? A: Yes. All three parts use the 8-SOIC (0.154", 3.90mm Width) surface mount package. PCB layout and footprint remain identical, enabling direct pinout compatibility across all substitutes.

Q: Is voltage supply compatibility critical for substitution? A: Yes. Supply voltage range differs between PS9817A-1-F3-AX (4.5V ~ 5.5V) and PS9821-1-F3-AX (2.7V ~ 3.6V). Verify your system supply voltage before selection. Operating outside the specified range will degrade performance or damage the device.

Q: Do all substitute parts maintain ROHS3 compliance? A: Yes. PS9817A-1-F3-AX and PS9821-1-F3-AX are both ROHS3 compliant. Environmental and regulatory compliance is preserved across all substitutes.

Q: What inventory availability should be expected? A: PS9817A-1-F3-AX is available in high volume (32,200+ units). PS9821-1-F3-AX is available in lower quantities (1,389 units). Select based on lead time and project volume requirements in addition to electrical specifications.