PS9552-AX Equivalent & Substitute Parts

Part Overview

The PS9552-AX is a 5000Vrms optical isolation gate driver manufactured by CEL, featuring 2.5A peak output current in a single-channel 8-DIP package. This part is classified as obsolete, necessitating the identification of active alternative components that maintain functional and electrical compatibility. The substitutes listed below are active products that satisfy the core electrical and mechanical requirements of the PS9552-AX.

Substiute Parts

PS9552-AX

CELIn Stock: 2250PS9552-AX Datasheet

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PS9531-AX

Renesas Electronics CorporationIn Stock: 2025PS9531-AX Datasheet

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VO3120

Vishay Semiconductor Opto DivisionIn Stock: 1483VO3120 Datasheet

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VO3120-X001

Vishay Semiconductor Opto DivisionIn Stock: 927VO3120-X001 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the PS9552-AX is based on the following critical parameters: isolation voltage rating, single-channel configuration, 2.5A peak output current capability, 8-DIP through-hole package format, and optical coupling technology. All substitute parts listed maintain these core specifications.

PS9531-AX (Renesas Electronics Corporation) provides electrical performance improvements over the obsolete PS9552-AX while maintaining full package and functional compatibility. This part is an active product with superior propagation delay characteristics.

VO3120 and VO3120-X001 (Vishay Semiconductor Opto Division) are functionally equivalent alternatives with slightly elevated isolation voltage ratings (5300Vrms versus 5000Vrms) and comparable output current specifications. Both variants are active products supplied in tube packaging.

Parameter Comparison

Engineering Selection Recommendations

PS9531-AX is recommended as the primary replacement for the obsolete PS9552-AX in new designs and production restarts. This Renesas Electronics Corporation part maintains pin-compatible 8-DIP packaging and exceeds the electrical performance specifications of the original PS9552-AX, particularly in propagation delay and pulse width distortion metrics. The part is actively manufactured and complies with ROHS3 standards, CSA, SEMKO, and UL certifications.

VO3120 and VO3120-X001 serve as secondary alternatives when PS9531-AX availability is constrained. The Vishay variants provide equivalent functional capability with marginally higher isolation voltage ratings. Both parts are actively manufactured with ROHS3 compliance. VO3120-X001 includes additional VDE certification.

All substitute parts maintain the same 8-DIP through-hole package geometry, enabling direct board-level replacement without circuit layout modifications. The higher operating temperature range of PS9531-AX (-40°C to 125°C) extends application flexibility beyond the original PS9552-AX specification (-40°C to 100°C).

Frequently Asked Questions (FAQ)

Q: Can PS9531-AX directly replace PS9552-AX in existing designs? A: Yes. PS9531-AX maintains identical pin configuration, 8-DIP package dimensions, single-channel optical coupling architecture, and 2.5A peak output current specification. No circuit redesign is required.

Q: What are the key differences between PS9531-AX and the Vishay VO3120 variants? A: PS9531-AX delivers superior high-speed performance with 175ns maximum propagation delay and 75ns maximum pulse width distortion, compared to VO3120 specifications of 400ns and 200ns respectively. PS9531-AX also provides higher common mode transient immunity (50kV/µs versus 25kV/µs). The Vishay parts offer slightly elevated isolation voltage (5300Vrms versus 5000Vrms).

Q: Are there packaging or lead count differences between VO3120 and VO3120-X001? A: VO3120-X001 is specified with 7 leads within the 8-DIP package footprint. Both variants are functionally equivalent and maintain the same 8-DIP (0.300", 7.62mm) through-hole mounting configuration. Consult component datasheets for lead assignment details.

Q: Which substitute part offers the widest operating temperature range? A: PS9531-AX operates across -40°C to 125°C, exceeding both the original PS9552-AX range (-40°C to 100°C) and the Vishay alternatives (-40°C to 110°C).

Q: Do all substitute parts comply with RoHS standards? A: PS9531-AX, VO3120, and VO3120-X001 are all ROHS3 compliant. The original PS9552-AX RoHS status is not specified in the available documentation.

Q: What regulatory certifications apply to these optical coupling gate drivers? A: PS9531-AX holds CSA, SEMKO, and UL certifications. VO3120 and VO3120-X001 are certified to cUR and UR standards, with VO3120-X001 also holding VDE certification. All parts are classified under ECCN EAR99 for export purposes.