M5KP17AE3 Equivalent & Substitute Parts

Part Overview

The M5KP17AE3 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This component features a 17V reverse standoff voltage with a 27.6V maximum clamping voltage and 181A peak pulse current capability in a through-hole DO-204AR axial package. The device is classified as military-grade and qualified to MIL-PRF-19500 standards.

Substitute parts are identified when equivalent electrical performance parameters are maintained within acceptable tolerances while meeting the same functional requirements. Alternative sources may be necessary due to inventory availability, supply chain considerations, or specific packaging preferences while maintaining electrical compatibility.

Substiute Parts

M5KP17AE3

Microchip TechnologyIn Stock: 1075M5KP17AE3 Datasheet

Current PartRFQ

5KP17A

Littelfuse Inc.In Stock: 36315KP17A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M5KP17AE3 is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 17V
• Voltage - Breakdown (Min): 18.9V
• Voltage - Clamping (Max) @ Ipp: 27.6V
• Current - Peak Pulse (10/1000µs): ≥181A
• Power - Peak Pulse: 5000W
• Unidirectional configuration with single channel
• Zener diode type

Mechanical Compatibility Criteria:

• Through-hole mounting technology
• Axial package orientation
• DO-204AR or equivalent axial package form factor

Substitute parts must maintain all electrical parameters within the specified tolerances and support identical mounting and package requirements. The 5KP17A from Littelfuse Inc. meets these criteria with equivalent voltage ratings, peak pulse current of 184.8A, and identical power dissipation capability in a compatible through-hole axial package.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: M5KP17AE3 (Microchip Technology)

The M5KP17AE3 is the specified component and remains the primary choice when military-grade qualification and MIL-PRF-19500 compliance are required. This device is actively manufactured and maintains full inventory availability (979 pcs in stock). The military-grade classification and formal qualification status provide documented performance assurance for applications requiring defense or aerospace standards.

Equivalent Substitute: 5KP17A (Littelfuse Inc.)

The 5KP17A qualifies as a direct electrical equivalent with identical voltage ratings (17V standoff, 27.6V clamping) and equivalent peak pulse current performance (184.8A versus 181A). Both devices are active products with confirmed manufacturing status. The 5KP17A offers superior RoHS3 compliance status compared to the non-compliant M5KP17AE3, making it suitable for applications with environmental or regulatory compliance requirements.

Compliance Considerations:

The M5KP17AE3 is RoHS non-compliant, while the 5KP17A is RoHS3 compliant. Both devices are REACH unaffected and carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications. Selection between these parts should account for end-application compliance mandates and supply chain requirements.

Temperature Operating Range:

The 5KP17A supports an extended upper operating temperature limit (175°C versus 150°C), providing additional thermal margin in high-temperature environments. The M5KP17AE3 maintains a lower minimum operating temperature (-65°C versus -55°C), suitable for extreme cold-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can the 5KP17A directly replace the M5KP17AE3 in existing designs?

A: The 5KP17A provides electrical equivalence across all critical parameters: identical 17V standoff voltage, 27.6V clamping voltage, and 5000W peak pulse power rating. Both devices are through-hole axial components with compatible form factors. Substitution is electrically valid. However, the M5KP17AE3 carries military-grade qualification (MIL-PRF-19500) while the 5KP17A does not. Applications requiring military certification must retain the original part number.

Q: What are the differences in packaging between these parts?

A: The M5KP17AE3 is supplied in bulk packaging, while the 5KP17A is supplied in cut tape (CT) format. Both use through-hole axial packages (DO-204AR and P600 respectively). These are compatible form factors for PCB assembly. Packaging format selection depends on assembly process requirements and inventory management preferences.

Q: Are there temperature-related limitations when substituting?

A: The M5KP17AE3 operates from -65°C to 150°C, while the 5KP17A operates from -55°C to 175°C. For applications requiring operation below -55°C, the M5KP17AE3 is required. For applications exceeding 150°C, the 5KP17A provides additional thermal headroom. Standard room-temperature applications fall within both operating ranges.

Q: How do the peak pulse current ratings compare?

A: The M5KP17AE3 specifies 181A peak pulse current, while the 5KP17A specifies 184.8A. Both devices share identical 5000W peak pulse power ratings. The 5KP17A provides marginally higher current capacity, making it suitable for applications at the upper end of the 5kW power envelope.

Q: What compliance differences exist between these parts?

A: The M5KP17AE3 is RoHS non-compliant and carries military-grade classification with MIL-PRF-19500 qualification. The 5KP17A is RoHS3 compliant and does not carry military qualification. Both are REACH unaffected. Selection depends on whether the application requires military certification or environmental compliance mandates.

Q: Are these parts suitable for power line protection applications?

A: No. Both the M5KP17AE3 and 5KP17A are classified for general-purpose applications and do not carry power line protection designation. Applications requiring power line protection require components specifically qualified for that function.