M5KP14AE3 Equivalent & Substitute Parts

Part Overview

The M5KP14AE3 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This component features a 14V reverse standoff voltage with a 23.2V maximum clamping voltage and 215A peak pulse current capability. The device is housed in a DO-204AR axial through-hole package and operates across a temperature range of -65°C to 150°C. The M5KP14AE3 maintains active product status and carries military-grade qualification under MIL-PRF-19500. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and application continuity where the original part may be unavailable or where alternative packaging or compliance requirements necessitate component substitution.

Substiute Parts

M5KP14AE3

Microchip TechnologyIn Stock: 715M5KP14AE3 Datasheet

Current PartRFQ

5KP14A

Littelfuse Inc.In Stock: 41375KP14A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the M5KP14AE3 are identified based on electrical parameter equivalence within the transient voltage suppressor category. The primary substitution criteria are:

Electrical Equivalence Parameters:

• Reverse standoff voltage: 14V (nominal)
• Breakdown voltage minimum: 15.6V
• Maximum clamping voltage: 23.2V
• Peak pulse current capability: within acceptable tolerance range (215A nominal)
• Peak pulse power dissipation: 5000W (5kW)

Mechanical Compatibility Parameters:

• Unidirectional topology (single channel)
• Through-hole axial mounting configuration
• Zener diode type classification

Functional Equivalence:

• General-purpose overvoltage protection applications
• No power line protection requirement
• Operating temperature range compatibility

The 5KP14A from Littelfuse Inc. qualifies as a direct electrical and functional substitute, maintaining identical voltage specifications, peak pulse power rating, and through-hole mounting architecture while offering alternative packaging (P600 axial package) and enhanced temperature operating range.

Parameter Comparison

Engineering Selection Recommendations

M5KP14AE3 (Microchip Technology): The M5KP14AE3 is recommended for applications requiring military-grade qualification under MIL-PRF-19500. This part maintains active product status and is suitable for defense, aerospace, and high-reliability applications where military certification is mandatory. The component operates across an extended lower temperature range (-65°C minimum) and is available in bulk packaging. However, this part carries RoHS non-compliant status, which may restrict use in applications subject to RoHS3 regulatory requirements.

5KP14A (Littelfuse Inc.): The 5KP14A serves as the primary substitute for applications where RoHS3 compliance is required. This part maintains identical electrical specifications and peak pulse power rating while offering an extended upper operating temperature range (-55°C to 175°C). The 5KP14A is supplied in cut tape packaging and carries active product status. The slightly higher peak pulse current (219.8A versus 215A) remains within acceptable tolerance for general-purpose overvoltage protection. Selection of the 5KP14A is appropriate for commercial and industrial applications subject to environmental compliance mandates where military qualification is not a requirement.

Substitution Feasibility: Both parts are electrically and functionally equivalent for general-purpose transient voltage suppression. The primary differentiators are regulatory compliance status, temperature operating range, packaging format, and military qualification. Physical package differences (DO-204AR versus P600) require verification of board layout and mechanical clearance during design integration.

Frequently Asked Questions (FAQ)

Q: Are the M5KP14AE3 and 5KP14A electrically interchangeable?

A: Yes. Both components maintain identical reverse standoff voltage (14V), breakdown voltage (15.6V minimum), clamping voltage (23.2V maximum), and peak pulse power dissipation (5000W). Peak pulse current specifications are within acceptable tolerance (215A versus 219.8A). Both are unidirectional zener-type TVS diodes rated for general-purpose overvoltage protection.

Q: What are the package differences between these parts?

A: The M5KP14AE3 uses the DO-204AR axial package, while the 5KP14A uses the P600 axial package. Both are through-hole axial configurations suitable for PCB mounting. Physical dimensions and lead spacing may differ; verification against board layout is required prior to substitution.

Q: Which part should be selected for RoHS-compliant applications?

A: The 5KP14A from Littelfuse carries ROHS3 compliance certification. The M5KP14AE3 is RoHS non-compliant and is unsuitable for applications subject to RoHS3 regulatory requirements.

Q: Does the M5KP14AE3 require military qualification?

A: The M5KP14AE3 carries military-grade qualification under MIL-PRF-19500. This certification is specific to the Microchip part and is not applicable to the Littelfuse 5KP14A. Applications requiring military qualification must use the M5KP14AE3.

Q: What is the temperature operating range difference?

A: The M5KP14AE3 operates from -65°C to 150°C (TJ). The 5KP14A operates from -55°C to 175°C (TJ). The 5KP14A provides extended upper temperature capability, while the M5KP14AE3 extends to lower temperatures. Application thermal requirements determine which part is appropriate.

Q: Can the 5KP14A replace the M5KP14AE3 in all applications?

A: The 5KP14A is electrically and functionally equivalent for general-purpose overvoltage protection. However, substitution is not appropriate for applications requiring military qualification (MIL-PRF-19500) or operating below -55°C. Physical package verification is required to confirm PCB compatibility.

Q: What inventory considerations apply to these parts?

A: The M5KP14AE3 is available in bulk packaging with 656 pieces in stock. The 5KP14A is supplied in cut tape packaging with 4100 pieces in stock. Packaging format affects handling, storage, and integration into automated assembly processes.