P4KE500 Equivalent & Substitute Parts

Part Overview

The P4KE500 is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage clamping applications. It features a unidirectional Zener configuration in a DO-204AL (DO-41) axial through-hole package with 400W peak pulse power rating. The P4KE500 is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

P4KE500

Littelfuse Inc.In Stock: 1040P4KE500 Datasheet

Current PartRFQ

P4KE530A

SMC Diode SolutionsIn Stock: 683P4KE530A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P4KE500 is determined by the following critical parameters that must remain consistent:

• Package Type: DO-204AL / DO-41 axial through-hole configuration
• Device Type: Unidirectional Zener TVS diode
• Power Rating: 400W peak pulse power
• Mounting Method: Through-hole axial mounting
• Compliance: ROHS3 compliance and EAR99 ECCN classification
• Moisture Sensitivity: MSL 1 (Unlimited)

The P4KE530A from SMC Diode Solutions satisfies all substitution criteria. Both devices maintain identical package geometry, electrical classification, power dissipation capability, and regulatory compliance status. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

The P4KE530A is the qualified substitute for the obsolete P4KE500. Selection is based on the following engineering criteria:

Product Status Alignment: The P4KE530A maintains active production status, eliminating supply chain risk associated with the P4KE500's obsolete classification.

Regulatory Compliance: Both components maintain ROHS3 compliance and identical ECCN/HTSUS classifications, ensuring no change to regulatory documentation or export control requirements.

Thermal Performance: The P4KE530A extends the minimum operating temperature to -65°C compared to the P4KE500's -55°C, providing enhanced low-temperature performance while maintaining the identical 175°C maximum junction temperature.

Packaging and Mounting: Identical DO-204AL (DO-41) axial through-hole package ensures direct mechanical and electrical compatibility without PCB redesign or assembly process modification.

Electrical Specifications: Matching 400W peak pulse power rating and identical MSL 1 classification confirm functional equivalence for general-purpose transient voltage suppression applications.

Frequently Asked Questions (FAQ)

Q: Can the P4KE530A be used as a direct replacement for the P4KE500 without PCB modification?

A: Yes. Both components use the identical DO-204AL (DO-41) axial through-hole package. No PCB layout changes are required for mechanical or electrical integration.

Q: What is the primary reason for substituting the P4KE500?

A: The P4KE500 is classified as obsolete. The P4KE530A is an active production component from SMC Diode Solutions, ensuring continued availability and supply chain stability.

Q: Are there any compliance or regulatory differences between these components?

A: No. Both components maintain ROHS3 compliance, identical ECCN (EAR99) classification, and the same HTSUS code (8541.10.0080). No regulatory documentation updates are required.

Q: How do the operating temperature ranges compare?

A: The P4KE530A operates from -65°C to 175°C, while the P4KE500 operates from -55°C to 175°C. The substitute provides 10°C additional low-temperature capability.

Q: Is the packaging format identical between both parts?

A: Yes. Both the P4KE500 and P4KE530A use DO-204AL (DO-41) axial through-hole packages. The P4KE530A is supplied in Tape & Reel (TR) format for automated assembly, while the original was supplied in standard packaging.

Q: What is the moisture sensitivity level for the substitute part?

A: The P4KE530A maintains MSL 1 (Unlimited) classification, identical to the P4KE500. No special moisture control or baking procedures are required during storage or assembly.

Q: Are the electrical power ratings identical?

A: Yes. Both components are rated for 400W peak pulse power dissipation, confirming functional equivalence for transient voltage suppression applications.