MP4KE27AE3 Equivalent & Substitute Parts

Part Overview

The MP4KE27AE3 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This through-hole component operates across a wide temperature range (-65°C to 150°C) and carries military-grade qualification under MIL-PRF-19500. The part is currently active in production with 1,039 units in stock.

Identifying equivalent and substitute parts is necessary to address supply chain flexibility, packaging preferences, compliance requirements, and operational temperature specifications that may vary across different application environments and manufacturing processes.

Substiute Parts

MP4KE27AE3

Microchip TechnologyIn Stock: 1117MP4KE27AE3 Datasheet

Current PartRFQ

P4KE27A

Taiwan Semiconductor CorporationIn Stock: 756P4KE27A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MP4KE27AE3 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Voltage - Reverse Standoff (Typ): 23.1V
• Voltage - Breakdown (Min): 25.7V
• Voltage - Clamping (Max) @ Ipp: 37.5V
• Current - Peak Pulse (10/1000µs): 11A
• Power - Peak Pulse: 400W
• Type: Zener, Unidirectional (1 channel)

Mechanical Equivalence Requirements:

• Package / Case: DO-204AL (DO-41) Axial Through Hole
• Mounting Type: Through Hole

Operational Equivalence Requirements:

• Operating Temperature Range: Must support the application's thermal requirements
• Moisture Sensitivity Level: 1 (Unlimited)

The P4KE27A from Taiwan Semiconductor Corporation meets all electrical and mechanical equivalence criteria. Differences in packaging format (Tape & Reel vs. Bulk), RoHS compliance status, and operating temperature range represent the primary distinctions between the main part and its substitute.

Parameter Comparison

Engineering Selection Recommendations

MP4KE27AE3 (Microchip Technology):

• Select this part when military-grade qualification under MIL-PRF-19500 is a contractual or regulatory requirement
• Appropriate for applications requiring the lower operating temperature floor of -65°C
• Suitable for procurement processes requiring bulk packaging format
• Use when RoHS non-compliance is acceptable or explicitly required by specification

P4KE27A (Taiwan Semiconductor Corporation):

• Select this part when ROHS3 compliance is mandated by design or procurement standards
• Appropriate for applications operating within the -55°C to 175°C temperature range
• Suitable for automated assembly processes utilizing Tape & Reel packaging
• Use when supply chain flexibility or cost optimization favors alternative manufacturers
• Provides extended high-temperature operation capability (175°C vs. 150°C)

Both parts are active products with confirmed inventory availability. Selection between them depends on compliance certifications, packaging requirements, and thermal operating envelope specifications for the target application.

Frequently Asked Questions (FAQ)

Q: Can the P4KE27A directly replace the MP4KE27AE3 in all applications?

A: The P4KE27A is electrically and mechanically equivalent to the MP4KE27AE3 across all critical TVS diode parameters: reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, and peak pulse power. Direct substitution is valid for applications operating within the -55°C to 175°C temperature range. Applications requiring operation below -55°C or military-grade MIL-PRF-19500 qualification require the MP4KE27AE3.

Q: What is the significance of the different operating temperature ranges?

A: The MP4KE27AE3 operates from -65°C to 150°C, while the P4KE27A operates from -55°C to 175°C. The P4KE27A provides a 25°C advantage at the high-temperature end, making it suitable for applications in elevated thermal environments. The MP4KE27AE3 extends 10°C lower on the cold end. Select based on the actual thermal requirements of your application environment.

Q: Does packaging format affect electrical performance?

A: No. The Bulk packaging of the MP4KE27AE3 and Tape & Reel packaging of the P4KE27A do not affect electrical performance. Packaging format selection depends on manufacturing process requirements: Bulk packaging suits manual or small-batch assembly, while Tape & Reel suits automated pick-and-place assembly lines.

Q: Why does the P4KE27A have ROHS3 compliance while the MP4KE27AE3 does not?

A: RoHS compliance status reflects manufacturing process and material composition standards at the time of production. The P4KE27A meets ROHS3 (Restriction of Hazardous Substances Directive 3) requirements, while the MP4KE27AE3 does not. Select the P4KE27A for applications or markets requiring RoHS compliance documentation.

Q: Are there any differences in reliability or qualification between these parts?

A: The MP4KE27AE3 carries military-grade qualification under MIL-PRF-19500, which is a specific requirement for defense and aerospace applications. The P4KE27A does not list this qualification. Both parts are active products with confirmed inventory. Select the MP4KE27AE3 when military qualification is contractually required.

Q: Can I mix these parts in the same production batch?

A: Both parts are functionally equivalent across electrical and mechanical parameters. However, mixing different manufacturers and compliance statuses in a single production batch may create traceability and documentation complications. Establish a single approved part for each design revision to maintain manufacturing consistency and supply chain documentation.

Q: What is the base product number, and why is it relevant?

A: Both the MP4KE27AE3 and P4KE27A share the base product number P4KE27, indicating they are variants of the same core design with identical electrical specifications. The suffix designations (AE3 for Microchip, A for Taiwan Semiconductor) indicate manufacturer-specific packaging, qualification, and compliance variations.