MP6KE24AE3 Equivalent & Substitute Parts

Part Overview

The MP6KE24AE3 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 address inventory availability, supply chain continuity, and application-specific packaging or performance requirements while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	20.5	V
Voltage - Breakdown (Min)	22.8	V
Voltage - Clamping (Max) @ Ipp	33.2	V
Current - Peak Pulse (10/1000µs)	18	A
Power - Peak Pulse	600	W
Operating Temperature Range	-65 to 150	°C (TJ)
Mounting Type	Through Hole	—
Device Type	Zener, Unidirectional	—

Substitute Part Grouping Explanation

Substitute parts for the MP6KE24AE3 are identified based on electrical parameter equivalence within the TVS diode category. The substitution logic is based on the following critical parameters:

Electrical Equivalence Criteria:

Voltage - Reverse Standoff (Typ): 20.5V
Voltage - Breakdown (Min): 22.8V
Voltage - Clamping (Max) @ Ipp: 33.2V
Power - Peak Pulse: 600W
Device Type: Zener, Unidirectional

Mechanical Compatibility Criteria:

Mounting Type: Through Hole
Package Category: Axial

The P6KE24A from Fairchild Semiconductor meets all electrical parameter requirements and operates as a through-hole axial device. While the package designation differs (DO-15/DO-204AC versus T-18), both are industry-standard through-hole axial formats suitable for equivalent circuit board integration. Peak pulse current capability of the substitute (19A) exceeds the minimum requirement (18A), providing equivalent or superior performance.

Parameter Comparison

Parameter	MP6KE24AE3 (Microchip)	P6KE24A (Fairchild)	Match Status
Voltage - Reverse Standoff (Typ)	20.5V	20.5V	Equivalent
Voltage - Breakdown (Min)	22.8V	22.8V	Equivalent
Voltage - Clamping (Max) @ Ipp	33.2V	33.2V	Equivalent
Current - Peak Pulse (10/1000µs)	18A	19A	Substitute Exceeds
Power - Peak Pulse	600W	600W	Equivalent
Operating Temperature Range	-65 to 150°C	-50 to 175°C	Substitute Exceeds
Device Type	Zener, Unidirectional	Zener, Unidirectional	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Package Category	T-18, Axial	DO-15 (DO-204AC), Axial	Compatible Format

Engineering Selection Recommendations

MP6KE24AE3 (Microchip Technology):

Primary selection for applications requiring MIL-PRF-19500 military qualification compliance
Specified for military-grade applications with formal qualification documentation
Operating temperature range: -65°C to 150°C
Product Status: Active

P6KE24A (Fairchild Semiconductor):

Suitable for general-purpose TVS applications where military qualification is not required
Electrical parameters meet or exceed MP6KE24AE3 specifications
Extended operating temperature range: -50°C to 175°C
Higher peak pulse current capability (19A vs. 18A)
Product Status: Active
Larger inventory availability (29,400 pcs vs. 771 pcs)

Selection between these parts depends on application requirements. Military qualification is the primary differentiator. Both devices are active-status products with equivalent electrical performance in the 24V TVS diode category. Package format differences (T-18 vs. DO-15) are both standard through-hole axial configurations and do not affect electrical functionality.

Frequently Asked Questions (FAQ)

Q: Can the P6KE24A directly replace the MP6KE24AE3 in all applications?

A: The P6KE24A provides electrical equivalence for general-purpose TVS applications. However, if the application requires MIL-PRF-19500 military qualification certification, the MP6KE24AE3 is the specified part. For non-military applications, the P6KE24A is electrically compatible.

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

A: Both T-18 and DO-15 are through-hole axial package formats used for two-terminal diodes. They differ in physical dimensions and lead spacing but serve equivalent circuit board integration functions. Verify PCB footprint compatibility before substitution.

Q: Does the P6KE24A have superior performance compared to the MP6KE24AE3?

A: The P6KE24A meets or exceeds the MP6KE24AE3 in electrical parameters. Peak pulse current is 19A (vs. 18A) and operating temperature range extends to 175°C (vs. 150°C). These represent equivalent or superior capability for the specified voltage protection function.

Q: Are there RoHS compliance differences between these parts?

A: The MP6KE24AE3 is RoHS non-compliant. RoHS status for the P6KE24A is not specified in the provided data. Verify RoHS compliance requirements for your application before final selection.

Q: What inventory considerations apply to these parts?

A: The MP6KE24AE3 has 771 pcs in stock. The P6KE24A has 29,400 pcs in stock. For applications without military qualification requirements, the P6KE24A offers significantly greater availability.

Q: Can these parts be used interchangeably in existing designs?

A: Electrical interchangeability is confirmed for the specified voltage and current parameters. Physical package differences require PCB footprint verification. Military qualification requirements must be evaluated separately.

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