PS9552L3-AX Equivalent & Substitute Parts

Part Overview

The PS9552L3-AX is a 2.5A gate driver optical coupler with 5000Vrms isolation, manufactured by CEL in the NEPOC series. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The part operates as a single-channel optoisolator designed for gate driver applications in high-voltage switching circuits, with surface mount 8-SMD gull wing packaging.

Substiute Parts

PS9552L3-AX

CELIn Stock: 1080PS9552L3-AX Datasheet

Current PartRFQ

PS9531L3-AX

Renesas Electronics CorporationIn Stock: 1965PS9531L3-AX Datasheet

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VO3120-X007T

Vishay Semiconductor Opto DivisionIn Stock: 16010VO3120-X007T Datasheet

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VO3120-X019T

Vishay Semiconductor Opto DivisionIn Stock: 792VO3120-X019T Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PS9552L3-AX is determined by the following critical parameters:

Primary Compatibility Criteria:

• Single-channel optical coupling gate driver architecture
• Isolation voltage rating of 5000Vrms or higher
• Peak output current of 2.5A
• Output supply voltage range compatibility (15V ~ 30V minimum)
• 8-SMD gull wing surface mount package
• Operating temperature range encompassing -40°C to 100°C

Substitution Logic: All identified substitute parts maintain the core functional specifications required for gate driver applications. Substitutes may exceed the original specifications in propagation delay performance, common mode transient immunity, and operating temperature range. These enhancements do not compromise compatibility and provide improved performance margins. Isolation voltage ratings at or above 5000Vrms ensure electrical safety equivalence.

Parameter Comparison

Engineering Selection Recommendations

PS9531L3-AX (Renesas Electronics Corporation): This substitute is an active product with ROHS3 compliance. It maintains identical isolation voltage and output current specifications while delivering superior propagation delay performance (175ns versus 500ns) and enhanced common mode transient immunity (50kV/µs versus 25kV/µs). Operating temperature range extends to 125°C. Approval agencies include CSA, SEMKO, and UL. This part is suitable for applications requiring improved timing performance and extended temperature operation.

VO3120-X007T (Vishay Semiconductor Opto Division): This active product features 5300Vrms isolation, exceeding the original specification. Output current capability is enhanced to 2.5A for both high and low states. Propagation delay is 400ns, intermediate between the original and Renesas option. Operating temperature range reaches 110°C. ROHS3 compliant with cUR and UR approvals. Packaged in cut tape format with Digi-Reel availability.

VO3120-X019T (Vishay Semiconductor Opto Division): Functionally identical to VO3120-X007T with 5300Vrms isolation and 2.5A output current capability. Propagation delay is 400ns. Operating temperature extends to 110°C. ROHS3 compliant with cUR, UR, and VDE approvals. Supplied in tape and reel packaging format.

All three substitutes maintain the 8-SMD gull wing surface mount package, ensuring mechanical and electrical compatibility with existing PCB designs. Selection should be based on procurement availability, packaging requirements, and performance margin needs for the specific application.

Frequently Asked Questions (FAQ)

Q: Can PS9531L3-AX directly replace PS9552L3-AX in existing designs?

A: Yes. Both parts maintain 5000Vrms isolation, single-channel architecture, 2.5A peak output current, and 8-SMD gull wing packaging. The PS9531L3-AX offers improved propagation delay (175ns versus 500ns) and higher common mode transient immunity (50kV/µs versus 25kV/µs), making it functionally superior for gate driver applications.

Q: What are the key differences between Vishay VO3120 variants?

A: VO3120-X007T and VO3120-X019T are electrically identical. The primary difference is packaging format: VO3120-X007T is supplied in cut tape with Digi-Reel option, while VO3120-X019T is supplied in tape and reel format. Both feature 5300Vrms isolation and 2.5A output current capability.

Q: Are all substitutes compatible with the original 15V to 30V output supply range?

A: Yes. PS9531L3-AX operates at 15V ~ 30V, matching the original. Vishay VO3120 variants operate at 15V ~ 32V, which encompasses the original range and provides additional headroom.

Q: Which substitute offers the best timing performance?

A: PS9531L3-AX delivers the fastest propagation delay at 175ns (tpLH/tpHL) and lowest pulse width distortion at 75ns. This makes it optimal for applications requiring tight timing control and minimal signal skew.

Q: Do all substitutes meet the same regulatory approvals as the original?

A: The original PS9552L3-AX lists BSI, CSA, DEMKO, FIMKO, NEMKO, SEMKO, and UL approvals. PS9531L3-AX holds CSA, SEMKO, and UL approvals. Vishay VO3120 variants hold cUR and UR approvals, with VO3120-X019T additionally holding VDE approval. Verify specific regulatory requirements for your application.

Q: Is the extended operating temperature range of substitutes beneficial?

A: PS9531L3-AX extends to 125°C (versus 100°C original) and Vishay VO3120 variants to 110°C. Extended temperature ranges provide design margin for applications operating in elevated ambient conditions or with thermal stress.

Q: Are all substitutes RoHS3 compliant?

A: PS9531L3-AX and both Vishay VO3120 variants are ROHS3 compliant. The original PS9552L3-AX compliance status is not specified in available documentation.