PS9552-AX Equivalent & Substitute Parts

Part Overview

The PS9552-AX is a 2.5A gate driver optical coupler manufactured by Renesas, designed for high-voltage isolation applications requiring 5000Vrms isolation. This component integrates optical coupling technology in an 8-DIP through-hole package and is classified as obsolete. The obsolete status necessitates identification of equivalent substitute parts to maintain design continuity and ensure procurement availability for legacy system support and new production requirements.

Substiute Parts

PS9552-AX

RenesasIn Stock: 2342PS9552-AX Datasheet

Current PartRFQ

PS9531-AX

Renesas Electronics CorporationIn Stock: 2025PS9531-AX Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS9552-AX is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

• Voltage isolation rating: 5000Vrms
• Number of channels: 1
• Peak output current: 2.5A
• Output current (high/low): 2A, 2A
• Package type: 8-DIP (0.300", 7.62mm)
• Mounting type: Through Hole
• Technology: Optical Coupling

The PS9531-AX meets all mandatory equivalence criteria. Both parts share identical isolation voltage, channel count, output current specifications, and physical package dimensions. The PS9531-AX is manufactured by Renesas Electronics Corporation and maintains full functional compatibility with the PS9552-AX in gate driver applications.

Parameter Comparison

Engineering Selection Recommendations

The PS9531-AX is the direct substitute for the obsolete PS9552-AX. Both components are manufactured by Renesas and share identical electrical specifications for isolation voltage, channel count, output current, and package configuration.

Product Status Consideration: The PS9552-AX is obsolete, while the PS9531-AX maintains active product status with ongoing manufacturer support and availability.

Compliance Advantage: The PS9531-AX is ROHS3 compliant, whereas the PS9552-AX is RoHS non-compliant. For applications subject to RoHS regulations, the PS9531-AX satisfies current environmental compliance requirements.

Performance Enhancement: The PS9531-AX demonstrates superior performance across multiple timing parameters. Common mode transient immunity is rated at 50kV/µs compared to 25kV/µs. Propagation delay is reduced to 175ns from 500ns. Pulse width distortion is 75ns versus 300ns. Rise and fall times are 40ns compared to 100ns. Operating temperature range extends to 125°C from 100°C. These enhancements do not compromise backward compatibility and provide additional design margin.

Packaging: Both parts utilize identical 8-DIP through-hole packages with 0.300" (7.62mm) spacing, enabling direct board-level substitution without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the PS9531-AX directly replace the PS9552-AX in existing designs?

A: Yes. The PS9531-AX is a direct functional equivalent. Both components share identical isolation voltage (5000Vrms), channel count (1), output current specifications (2.5A peak, 2A high/low), and 8-DIP package dimensions. No circuit modifications are required for substitution.

Q: What are the key differences between PS9552-AX and PS9531-AX?

A: The primary differences are product status and performance characteristics. The PS9531-AX is an active product with ROHS3 compliance, whereas the PS9552-AX is obsolete and RoHS non-compliant. The PS9531-AX provides superior timing performance with faster propagation delay (175ns vs. 500ns), lower pulse width distortion (75ns vs. 300ns), and extended operating temperature range (-40°C to 125°C vs. -40°C to 100°C).

Q: Are there packaging differences between these parts?

A: No. Both the PS9552-AX and PS9531-AX use identical 8-DIP through-hole packages with 0.300" (7.62mm) spacing. Direct board-level substitution is possible without PCB redesign.

Q: Does the PS9531-AX meet current regulatory requirements?

A: Yes. The PS9531-AX is ROHS3 compliant and REACH affected, meeting current environmental and regulatory standards. The PS9552-AX is RoHS non-compliant and REACH unaffected.

Q: What is the isolation voltage rating for both parts?

A: Both the PS9552-AX and PS9531-AX provide 5000Vrms isolation voltage, suitable for high-voltage gate driver applications requiring galvanic isolation.

Q: Can I use PS9531-AX in temperature-critical applications?

A: The PS9531-AX operates across -40°C to 125°C, providing a 25°C wider temperature range than the PS9552-AX (-40°C to 100°C). This extended range accommodates more demanding thermal environments.

Q: What is the output current capability?

A: Both parts deliver 2.5A peak output current with 2A high and low output current ratings, suitable for driving gate circuits in power semiconductor applications.