M5KP9.0AE3 Equivalent & Substitute Parts

Part Overview

The M5KP9.0AE3 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This component features a 9V reverse standoff voltage with a 15.4V maximum clamping voltage and 325A peak pulse current capability in a through-hole DO-204AR axial package. The part is classified as active and carries military-grade qualification under MIL-PRF-19500. Equivalent substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when specific packaging or compliance requirements necessitate component substitution.

Substiute Parts

M5KP9.0AE3

Microchip TechnologyIn Stock: 1101M5KP9.0AE3 Datasheet

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5KP9.0A

LittelfuseIn Stock: 33145KP9.0A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the M5KP9.0AE3 is determined by electrical and mechanical parameter equivalence within the transient voltage suppressor category. The primary substitution criteria are:

Electrical Parameters:

• Voltage - Reverse Standoff (Typ): 9V
• Voltage - Breakdown (Min): 10V
• Voltage - Clamping (Max) @ Ipp: 15.4V
• Current - Peak Pulse (10/1000µs): minimum 325A
• Power - Peak Pulse: 5000W (5kW)
• Type: Zener, Unidirectional (1 channel)

Mechanical Parameters:

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

Functional Requirements:

• Category: Transient Voltage Suppressors (TVS)
• Applications: General Purpose
• Product Status: Active

The substitute part 5KP9.0A from Littelfuse meets all electrical specifications with equivalent or superior performance characteristics and maintains through-hole axial mounting compatibility.

Parameter Comparison

Engineering Selection Recommendations

M5KP9.0AE3 (Microchip Technology):

• Primary selection for applications requiring military-grade qualification under MIL-PRF-19500
• Specified for systems with operating temperature requirements down to -65°C
• Appropriate for legacy designs or military/aerospace applications with established component qualification
• RoHS non-compliant status requires verification against end-product regulatory requirements

5KP9.0A (Littelfuse):

• Suitable for applications requiring ROHS3 compliance
• Extended upper operating temperature range (-55°C ~ 175°C) accommodates higher thermal environments
• Equivalent electrical performance with peak pulse current of 331.2A exceeds the 325A specification
• Active product status with established supply chain availability
• Cut Tape packaging supports automated assembly processes

Both parts are active products with equivalent electrical specifications. Selection between them is determined by regulatory compliance requirements (RoHS status), operating temperature range requirements, and packaging format needs for manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can the 5KP9.0A (Littelfuse) directly replace the M5KP9.0AE3 (Microchip) in existing designs?

A: Electrical substitution is valid based on equivalent voltage ratings (9V standoff, 15.4V clamping) and current capability (331.2A exceeds 325A requirement). Both are unidirectional zener TVS diodes in through-hole axial packages. Physical package dimensions differ (DO-204AR versus P600), requiring verification of PCB footprint compatibility and lead spacing.

Q: What are the key electrical parameters that define substitution eligibility?

A: The critical parameters are: 9V reverse standoff voltage, 10V minimum breakdown voltage, 15.4V maximum clamping voltage, 325A minimum peak pulse current, and 5000W peak pulse power rating. Substitute parts must meet or exceed these specifications while maintaining the same unidirectional zener type and through-hole mounting configuration.

Q: How do the operating temperature ranges differ between these parts?

A: The M5KP9.0AE3 operates from -65°C to 150°C (TJ), while the 5KP9.0A operates from -55°C to 175°C (TJ). The Littelfuse part provides a 25°C higher upper temperature limit, making it suitable for higher thermal environments. The Microchip part extends 10°C lower on the minimum side.

Q: What is the significance of the RoHS compliance difference?

A: The M5KP9.0AE3 is RoHS non-compliant, while the 5KP9.0A is ROHS3 compliant. End-product regulatory requirements determine which part is appropriate. Products destined for EU markets or subject to RoHS directives require the ROHS3-compliant 5KP9.0A.

Q: Are the package designations DO-204AR and P600 physically interchangeable?

A: Both are through-hole axial packages, but DO-204AR and P600 have different physical dimensions and lead spacing. PCB footprint verification is required before substitution. Lead diameter, pitch, and overall length must be confirmed against the specific PCB design.

Q: What is the difference between Bulk and Cut Tape packaging?

A: Bulk packaging is supplied as loose components, suitable for manual assembly or small-volume applications. Cut Tape (CT) packaging provides components on continuous tape, optimized for automated pick-and-place assembly equipment. Selection depends on manufacturing process requirements.

Q: Does the peak pulse current difference (325A vs. 331.2A) affect circuit performance?

A: The 5KP9.0A provides 331.2A peak pulse current, which exceeds the 325A specification of the M5KP9.0AE3. This represents a 1.9% margin above the minimum requirement and does not negatively affect circuit performance. Both parts meet the same 5000W peak pulse power specification.

Q: Is military qualification (MIL-PRF-19500) a requirement for all applications?

A: Military qualification is specific to the M5KP9.0AE3 and is required only for military, aerospace, or defense applications with established qualification requirements. Commercial and industrial applications typically do not require this certification and can use the 5KP9.0A.