PS9817A-1-F3-AX Equivalent & Substitute Parts

Part Overview

The PS9817A-1-F3-AX is a logic output optoisolator from Renesas Electronics Corporation's NEPOC series, designed for 2500Vrms isolation applications with open collector output configuration. This component operates at 10Mbps data rate and features 15kV/µs common mode transient immunity in an 8-SSOP surface mount package. The original manufacturer part (PS9817A-1-F3-AX) is currently discontinued at DiGi Electronics, necessitating identification of equivalent and direct substitute parts for ongoing system designs and component procurement.

Substiute Parts

PS9817A-1-F3-AX

CELIn Stock: 32229PS9817A-1-F3-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

Substitution of optoisolator components is determined by electrical compatibility across isolation voltage, output configuration, common mode transient immunity, data rate capability, supply voltage range, and mechanical package specifications. The PS9817A-1-F3-AX operates within defined electrical parameters that define valid substitute candidates.

Key Parameters Determining Substitution:

• Voltage - Isolation: 2500Vrms
• Output Type: Open Collector
• Number of Channels: 1
• Common Mode Transient Immunity: 15kV/µs minimum
• Data Rate: 10Mbps minimum
• Package / Case: 8-SOIC (0.154", 3.90mm Width) / 8-SSOP
• Operating Temperature Range: -40°C ~ 85°C

Direct Substitutes (Identical Electrical Parameters):

• PS9817A-1-AX: Bulk packaging variant with identical electrical specifications

Similar Substitutes (Enhanced Performance):

• PS9821-1-F3-AX: Higher data rate capability (15Mbps vs. 10Mbps); operates on lower supply voltage range (2.7V ~ 3.6V vs. 4.5V ~ 5.5V)

Parameter Comparison

Engineering Selection Recommendations

PS9817A-1-AX Selection: PS9817A-1-AX functions as a direct electrical equivalent with identical parameter specifications. However, this part carries a "Not For New Designs" product status designation, limiting its suitability for new development initiatives. Component availability in bulk packaging may accommodate high-volume procurement requirements in legacy system support scenarios.

PS9817A-1-F3-AX Selection (Preferred): PS9817A-1-F3-AX maintains active product status and is the recommended selection for new designs and ongoing procurement. This part delivers identical electrical performance to the discontinued original specification while remaining in active production. Availability in Cut Tape and Digi-Reel packaging formats supports both prototype and production-volume procurement pathways. ROHS3 compliance and REACH unaffected certification satisfy regulatory requirements.

PS9821-1-F3-AX Selection (Performance Enhancement Option): PS9821-1-F3-AX provides enhanced data rate capability (15Mbps versus 10Mbps) and operates on reduced supply voltage range (2.7V ~ 3.6V versus 4.5V ~ 5.5V). This part functions as a performance upgrade candidate in applications where higher data rates are required or where low-voltage operation is specified. Supply voltage range incompatibility requires circuit design modification when substituting into 5V-dominant systems. This part carries active product status and maintains identical isolation voltage, output configuration, and common mode transient immunity specifications.

Frequently Asked Questions (FAQ)

Q: Can PS9817A-1-AX directly replace PS9817A-1-F3-AX in existing designs? A: Electrical parameters are identical. PS9817A-1-AX bulk packaging differs from PS9817A-1-F3-AX Cut Tape/Digi-Reel format. Product status designation "Not For New Designs" applies to PS9817A-1-AX. For ongoing production, PS9817A-1-F3-AX remains the specified selection.

Q: What is the primary difference between PS9821-1-F3-AX and PS9817A-1-F3-AX? A: PS9821-1-F3-AX operates at 15Mbps data rate versus 10Mbps for PS9817A-1-F3-AX. Supply voltage range differs: PS9821-1-F3-AX requires 2.7V ~ 3.6V while PS9817A-1-F3-AX operates on 4.5V ~ 5.5V. All other isolation, output configuration, and timing parameters remain identical.

Q: Is PS9821-1-F3-AX compatible with 5V supply designs? A: PS9821-1-F3-AX operates on 2.7V ~ 3.6V supply range and is not rated for 5V supply voltage operation. Direct substitution into 5V systems requires circuit redesign to accommodate reduced supply voltage specification.

Q: Which substitute part supports the full 4.5V ~ 5.5V supply range? A: PS9817A-1-F3-AX maintains the original 4.5V ~ 5.5V supply voltage range. PS9817A-1-AX also supports this range but carries obsolescence status. PS9821-1-F3-AX operates on reduced 2.7V ~ 3.6V supply range.

Q: Are all three parts surface mount compatible with 8-SSOP packages? A: All three parts feature identical 8-SOIC (0.154", 3.90mm Width) package and 8-SSOP supplier device package. Surface mount assembly processes are interchangeable across all three part numbers.

Q: Do regulatory certifications differ between these parts? A: All three parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification. Moisture sensitivity level MSL 1 (Unlimited) applies uniformly across all three optoisolators.