PS2381-1Y-V-W-AX Optoisolator Equivalent & Substitute Parts

Part Overview

The PS2381-1Y-V-W-AX is a single-channel optoisolator with transistor output, rated for 5000Vrms isolation voltage. This component is designed for applications requiring galvanic isolation in DC input circuits with transistor-based output switching. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines to maintain design continuity and ensure supply chain availability.

Substiute Parts

PS2381-1Y-V-W-AX

CELIn Stock: 1075PS2381-1Y-V-W-AX Datasheet

Current PartRFQ

PS2381-1Y-F3-AX

Renesas Electronics CorporationIn Stock: 12879PS2381-1Y-F3-AX Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS2381-1Y-V-W-AX is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Isolation voltage: 5000Vrms
• Number of channels: 1
• Output type: Transistor
• Input type: DC
• Package type: 4-SMD, Gull Wing (4-LSOP 2.54mm)
• Mounting type: Surface Mount
• Maximum output voltage: 80V
• Maximum output current: 50mA
• Operating temperature range: -40°C to 115°C

Allowable Variation Parameters:

• Current Transfer Ratio: The substitute part may have a different CTR range provided minimum and maximum values remain within acceptable operating margins for the application circuit
• Rise/Fall time: Must remain within 4µs to 5µs specification
• Vce Saturation: Must not exceed 300mV maximum

The PS2381-1Y-F3-AX meets all mandatory matching criteria and falls within allowable variation parameters, qualifying it as a direct functional substitute.

Parameter Comparison

Engineering Selection Recommendations

The PS2381-1Y-F3-AX qualifies as a direct functional substitute for the PS2381-1Y-V-W-AX based on the following engineering criteria:

Electrical Equivalence: All critical electrical parameters match or fall within acceptable operating ranges. The isolation voltage, output voltage rating, output current capability, and switching characteristics are identical. The Current Transfer Ratio range of the substitute (50% to 400% @ 5mA) encompasses the original part's range (130% to 260% @ 5mA), ensuring circuit compatibility across the specified operating window.

Mechanical and Package Compatibility: Both parts use identical 4-SMD, Gull Wing packaging in 4-LSOP (2.54mm) configuration with surface mount mounting type. PCB layout and assembly processes require no modification.

Regulatory and Compliance Status: Both parts maintain ROHS3 compliance, REACH unaffected status, and identical ECCN and HTSUS classifications. No regulatory barriers exist to substitution.

Product Status and Supply: The substitute part is active in production with significantly higher inventory availability (12790 Pcs versus 1027 Pcs), providing improved supply chain continuity. The original part is discontinued at DiGi Electronics, making the substitute the appropriate selection for new designs and replenishment orders.

Packaging Format: The substitute is supplied in Tape & Reel (TR) format, standard for high-volume surface mount assembly operations.

Frequently Asked Questions (FAQ)

Q: Can the PS2381-1Y-F3-AX be used as a direct replacement for the PS2381-1Y-V-W-AX without circuit modification?

A: Yes. The PS2381-1Y-F3-AX is electrically and mechanically equivalent. All critical parameters including isolation voltage, output ratings, switching characteristics, and operating temperature range are identical. No circuit redesign is required.

Q: What is the significance of the different Current Transfer Ratio ranges between the two parts?

A: The substitute part has a wider CTR range (50% to 400% @ 5mA) compared to the original (130% to 260% @ 5mA). This wider range does not affect substitutability because the original part's range is fully contained within the substitute's range. Circuit designs based on the original part's CTR specifications will operate within the substitute's specifications.

Q: Are the package dimensions and pin configurations identical?

A: Yes. Both parts use 4-SMD, Gull Wing packaging with 4-LSOP (2.54mm) configuration. Pin assignments, spacing, and PCB footprints are identical. No layout modifications are necessary.

Q: What is the difference between the packaging formats listed?

A: The original part lists packaging as unspecified, while the substitute is supplied in Tape & Reel (TR) format. Tape & Reel is the standard packaging for surface mount components in production environments, facilitating automated assembly. This is a supply format difference, not a functional difference.

Q: Why is the substitute part more readily available?

A: The PS2381-1Y-F3-AX is manufactured by Renesas Electronics Corporation and maintains active product status with 12790 Pcs in stock. The original PS2381-1Y-V-W-AX is discontinued at DiGi Electronics with lower inventory (1027 Pcs). The substitute's active status and higher stock levels reflect ongoing production and market demand.

Q: Are there any compliance or regulatory differences between the two parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and share identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications. Regulatory requirements and export control status are equivalent.

Q: Can the substitute part be used in existing designs without testing?

A: The substitute meets all specified electrical and mechanical parameters. However, final validation follows standard engineering practice for component substitution in your specific application circuit.