MP6KE12AE3 Equivalent & Substitute Parts

Part Overview

The MP6KE12AE3 is an active-status Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology. This unidirectional zener-type device provides transient overvoltage protection in general-purpose applications through a through-hole T-18 axial package. The device operates across a temperature range of -65°C to 150°C and meets MIL-PRF-19500 military qualification standards.

Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part number becomes unavailable or when alternative sourcing is required.

Substiute Parts

MP6KE12AE3

Microchip TechnologyIn Stock: 845MP6KE12AE3 Datasheet

Current PartRFQ

P6KE12A

Fairchild SemiconductorIn Stock: 3416P6KE12A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MP6KE12AE3 are identified based on electrical parameter equivalence and mechanical compatibility. The substitution logic is based on the following criteria:

Electrical Parameters (Must Match):

• Voltage - Reverse Standoff (Typ): 10.2V
• Voltage - Breakdown (Min): 11.4V
• Voltage - Clamping (Max) @ Ipp: 16.7V
• Current - Peak Pulse (10/1000µs): 36A or greater
• Power - Peak Pulse: 600W
• Type: Zener
• Unidirectional Channels: 1
• Applications: General Purpose

Mechanical Parameters (Must Match):

• Mounting Type: Through Hole
• Package Category: Axial

Parts meeting these criteria are classified as direct electrical and mechanical substitutes. Variations in package designation (T-18 versus DO-15/DO-204AC) are acceptable provided the axial through-hole form factor is maintained and pin compatibility is preserved.

Parameter Comparison

Engineering Selection Recommendations

MP6KE12AE3 (Microchip Technology): The primary part maintains active product status and carries MIL-PRF-19500 military qualification. This device is suitable for applications requiring military-grade compliance and operates across an extended lower temperature range (-65°C minimum). The part is RoHS non-compliant and carries REACH Unaffected status.

P6KE12A (Fairchild Semiconductor): This substitute part is electrically equivalent with a marginally higher peak pulse current rating (37A versus 36A) and operates across a wider upper temperature range (-50°C to 175°C). The P6KE12A maintains active product status and is suitable for general-purpose applications. Package designation differs (DO-15/DO-204AC versus T-18), but both are axial through-hole configurations compatible with standard PCB layouts.

Selection Basis:

• Both parts meet the core electrical requirements for 10.2V standoff voltage and 16.7V clamping voltage operation
• Both are active products with established supply chains
• The P6KE12A offers higher peak pulse current capacity and extended upper temperature rating
• Package form factor differences do not preclude substitution in through-hole applications
• Military qualification is specific to the MP6KE12AE3; applications requiring MIL-PRF-19500 compliance must use the primary part

Frequently Asked Questions (FAQ)

Q: Can the P6KE12A replace the MP6KE12AE3 in all applications?

A: The P6KE12A is electrically equivalent for general-purpose transient voltage suppression. However, applications requiring MIL-PRF-19500 military qualification must use the MP6KE12AE3. The P6KE12A is suitable for commercial and industrial applications with identical voltage and power specifications.

Q: What is the difference between the T-18 and DO-15 packages?

A: Both T-18 and DO-15 are axial through-hole package designations for diodes. T-18 is a Microchip-specific designation; DO-15 (DO-204AC) is the industry-standard equivalent. Both packages are mechanically and electrically compatible in through-hole PCB applications.

Q: Does the higher peak pulse current rating of the P6KE12A (37A vs. 36A) affect compatibility?

A: No. The P6KE12A's higher current rating (37A) is a superset of the MP6KE12AE3 requirement (36A). This represents improved performance and does not create compatibility issues.

Q: What is the operating temperature difference between these parts?

A: The MP6KE12AE3 operates from -65°C to 150°C; the P6KE12A operates from -50°C to 175°C. The P6KE12A provides extended upper temperature capability. Applications requiring operation below -50°C must use the MP6KE12AE3.

Q: Are there any compliance differences between these parts?

A: The MP6KE12AE3 carries MIL-PRF-19500 military qualification and is RoHS non-compliant. The P6KE12A compliance status is not specified in the provided data. Applications with specific compliance requirements should verify the P6KE12A documentation independently.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes, for general-purpose applications. Both parts are unidirectional zener TVS diodes with identical voltage specifications and through-hole axial packages. PCB layout and footprint compatibility must be verified for the specific package variant used.