M5KP26AE3 Equivalent & Substitute Parts

Part Overview

The M5KP26AE3 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This through-hole component operates with a 26V reverse standoff voltage and provides 5kW peak pulse power dissipation capability. The part is classified as Active and carries Military grade qualification under MIL-PRF-19500. Substitute parts are identified when equivalent electrical performance parameters and mechanical compatibility are maintained across alternative manufacturers and packaging configurations.

Substiute Parts

M5KP26AE3

Microchip TechnologyIn Stock: 1092M5KP26AE3 Datasheet

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5KP26A

Littelfuse Inc.In Stock: 46525KP26A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the M5KP26AE3 is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 26V
• Voltage - Breakdown (Min): 28.9V
• Voltage - Clamping (Max) @ Ipp: 42.1V
• Current - Peak Pulse (10/1000µs): ≥119A
• Power - Peak Pulse: 5000W (5kW)
• Unidirectional Channels: 1
• Type: Zener

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: Axial configuration

The substitute part 5KP26A (Littelfuse Inc.) maintains electrical equivalence with identical voltage parameters and peak pulse power rating. Peak pulse current specification (121.1A) exceeds the minimum requirement. Both components operate as unidirectional Zener TVS diodes in through-hole axial packages, confirming mechanical interchangeability in circuit board layouts designed for the M5KP26AE3.

Parameter Comparison

Engineering Selection Recommendations

M5KP26AE3 (Microchip Technology):

• Product Status: Active
• Grade: Military
• Qualification: MIL-PRF-19500
• RoHS Status: RoHS non-compliant
• REACH Status: REACH Unaffected
• Selection basis: Military-grade qualification and MIL-PRF-19500 compliance required for defense and aerospace applications

5KP26A (Littelfuse Inc.):

• Product Status: Active
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected
• Selection basis: RoHS3 compliance required for commercial and consumer electronics; extended operating temperature range (-55°C to 175°C) supports broader environmental conditions; higher peak pulse current (121.1A) provides additional margin

Selection between these parts depends on regulatory compliance requirements. Military applications mandate the M5KP26AE3 due to MIL-PRF-19500 qualification. Commercial applications with RoHS compliance requirements utilize the 5KP26A. Both parts deliver equivalent electrical performance for the specified 26V protection circuit.

Frequently Asked Questions (FAQ)

Q: Can the 5KP26A substitute for the M5KP26AE3 in all applications?

A: Electrical substitution is valid when RoHS compliance is not a regulatory requirement. The 5KP26A maintains identical voltage parameters and peak pulse power rating. However, military and aerospace applications requiring MIL-PRF-19500 qualification must use the M5KP26AE3.

Q: What is the difference between DO-204AR and P600 packages?

A: Both are through-hole axial packages for TVS diodes. DO-204AR is the Microchip designation; P600 is the Littelfuse designation. Both packages are mechanically compatible in standard through-hole circuit board layouts designed for axial components.

Q: Does the higher peak pulse current of the 5KP26A (121.1A vs. 119A) affect circuit design?

A: No. The substitute part's higher peak pulse current specification provides additional safety margin without requiring circuit redesign. The clamping voltage and power dissipation remain equivalent.

Q: Why does the 5KP26A have a wider operating temperature range?

A: The 5KP26A operates from -55°C to 175°C, compared to the M5KP26AE3 range of -65°C to 150°C. This reflects different manufacturing processes and material selections between Microchip and Littelfuse. For applications within the M5KP26AE3 temperature range, both parts perform identically.

Q: Is the 5KP26A RoHS3 compliant?

A: Yes. The 5KP26A carries ROHS3 Compliant status, making it suitable for applications subject to RoHS Directive 2011/65/EU. The M5KP26AE3 is RoHS non-compliant.

Q: Can I use the 5KP26A in a circuit originally designed for the M5KP26AE3?

A: Yes, provided the application does not require MIL-PRF-19500 qualification. Electrical parameters are equivalent, and both components use through-hole axial mounting. Verify that the specific package footprint (DO-204AR vs. P600) is accommodated in the circuit board layout.