P4SMA530 Equivalent & Substitute Parts

Part Overview

The P4SMA530 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection in surface-mount applications. This component features a 530V nominal voltage rating with 400W peak pulse power handling capability in a DO-214AC (SMA) package. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

P4SMA530

Littelfuse Inc.In Stock: 769P4SMA530 Datasheet

Current PartRFQ

P4SMA530A

Good-Ark SemiconductorIn Stock: 23970P4SMA530A Datasheet

MFR RecommendedRFQ

P4SMA530A

Good-Ark SemiconductorIn Stock: 23970P4SMA530A Datasheet

MFR RecommendedRFQ

SMAJP4KE530A-TP

Micro Commercial CoIn Stock: 876SMAJP4KE530A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P4SMA530 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Unidirectional channel configuration (1 channel)
• Reverse standoff voltage (477V typical)
• Peak pulse current rating (600mA)
• Peak pulse power rating (400W)
• Package type (DO-214AC / SMA form factor)
• Surface mount mounting type
• Zener diode type classification
• General-purpose application category

Allowable Variation Parameters:

• Voltage breakdown minimum (478.33V to 504.6V range acceptable)
• Voltage clamping maximum (725V to 761.25V range acceptable)
• Operating temperature range (minimum -55°C acceptable; maximum 150°C to 175°C acceptable)
• Manufacturer identity (different manufacturers permitted)
• Product status (active status preferred over obsolete)
• Compliance certifications (ROHS3 required; REACH status noted where applicable)

The substitute parts listed below maintain electrical and mechanical compatibility within these defined parameters.

Parameter Comparison

Engineering Selection Recommendations

P4SMA530A (Good-Ark Semiconductor) is the primary recommended substitute. This part maintains identical electrical specifications for reverse standoff voltage, peak pulse current, and peak pulse power. The part carries active product status, ensuring long-term availability and supply chain stability. ROHS3 compliance and REACH unaffected status confirm regulatory alignment. The operating temperature range of -55°C to 150°C covers standard industrial applications, with the upper limit matching the original specification.

SMAJP4KE530A-TP (Micro Commercial Co) serves as a secondary substitute option. This part meets all critical electrical parameters and offers an extended operating temperature range to 175°C, providing additional thermal margin for high-temperature environments. REACH unaffected status is confirmed. The part is actively manufactured. Note that RoHS and MSL specifications are not provided for this variant; verification against your specific compliance requirements is necessary before selection.

Both substitute parts are qualified for direct replacement in applications where the P4SMA530 was originally specified, provided that the electrical and thermal operating conditions remain within the stated parameter ranges.

Frequently Asked Questions (FAQ)

Q: Can P4SMA530A be used as a direct replacement for P4SMA530?

A: Yes. Both parts share identical reverse standoff voltage (477V), peak pulse current (600mA), and peak pulse power (400W) ratings. The package type (DO-214AC, SMA) and mounting configuration are identical. The P4SMA530A is actively manufactured, addressing the obsolescence of the original part.

Q: What is the difference between P4SMA530A and SMAJP4KE530A-TP?

A: Both parts meet the core electrical specifications. The primary differences are: (1) SMAJP4KE530A-TP offers an extended operating temperature range to 175°C versus 150°C for P4SMA530A; (2) P4SMA530A provides explicit ROHS3 compliance and MSL-1 rating, while SMAJP4KE530A-TP does not specify these certifications; (3) packaging format differs slightly (SMA versus SMAJ designation). Selection depends on your thermal requirements and compliance documentation needs.

Q: Are there any package compatibility concerns?

A: Both substitute parts use the DO-214AC surface-mount package, which is mechanically and electrically compatible with the original P4SMA530. The SMA and SMAJ designations refer to the same physical package form factor. PCB footprints and reflow soldering profiles remain unchanged.

Q: What voltage parameters determine substitution eligibility?

A: The reverse standoff voltage (477V typical) is the primary voltage parameter that must match. The breakdown voltage minimum and clamping voltage maximum show acceptable variation across the substitute parts (breakdown: 478.33V to 504.6V; clamping: 725V to 761.25V). These variations remain within the functional tolerance for transient voltage suppression in general-purpose applications.

Q: Are compliance certifications identical across all three parts?

A: No. The original P4SMA530 and P4SMA530A both carry explicit ROHS3 compliance and MSL-1 ratings. SMAJP4KE530A-TP does not provide these specifications in the available documentation. If your application requires certified ROHS3 compliance or documented moisture sensitivity level, P4SMA530A is the recommended choice.

Q: What is the inventory status for these parts?

A: P4SMA530A (Good-Ark) has 23,950 units in stock. SMAJP4KE530A-TP (Micro Commercial Co) has 803 units in stock. Both parts are actively available for procurement.