M5KP70AE3 Equivalent & Substitute Parts

Part Overview

The M5KP70AE3 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This component operates with a 70V reverse standoff voltage and provides 5000W peak pulse power dissipation in a through-hole DO-204AR axial package. The part maintains active product status and is qualified to MIL-PRF-19500 military standards. Substitute parts are identified to address inventory availability, packaging preferences, or compliance requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

M5KP70AE3

Microchip TechnologyIn Stock: 780M5KP70AE3 Datasheet

Current PartRFQ

5KP70A

Littelfuse Inc.In Stock: 48135KP70A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the M5KP70AE3 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 70V
• Voltage - Breakdown (Min): 77.8V
• Voltage - Clamping (Max) @ Ipp: 113V
• Power - Peak Pulse: 5000W
• Type: Zener, Unidirectional
• Mounting Type: Through Hole
• Axial package configuration

Allowable Variations:

• Current - Peak Pulse (10/1000µs): ±2A tolerance acceptable
• Operating Temperature Range: Extended range acceptable
• Packaging format: Alternative axial packages (P600 equivalent to DO-204AR)
• RoHS compliance: Substitutes may differ in compliance status
• Supplier packaging: Bulk or Cut Tape formats interchangeable

The 5KP70A from Littelfuse Inc. qualifies as a direct substitute based on matching all critical electrical parameters and maintaining through-hole axial package compatibility.

Parameter Comparison

Engineering Selection Recommendations

M5KP70AE3 (Microchip Technology):

• Select when military-grade qualification (MIL-PRF-19500) is required
• Appropriate for applications requiring RoHS non-compliant components
• Suitable for temperature-critical applications requiring -65°C minimum operating temperature
• Bulk packaging format available

5KP70A (Littelfuse Inc.):

• Select when ROHS3 compliance is mandated by design or procurement specifications
• Appropriate for applications with extended high-temperature requirements (up to 175°C)
• Suitable when REACH compliance documentation is required
• Cut Tape packaging format available for automated assembly processes
• Higher peak pulse current rating (45.1A vs. 44A) provides additional margin

Both parts maintain identical voltage specifications and power dissipation ratings, ensuring functional equivalence in circuit protection applications. Selection between these parts depends on regulatory compliance requirements and environmental operating conditions rather than electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the 5KP70A replace the M5KP70AE3 in all applications?

A: The 5KP70A is electrically equivalent for voltage regulation and power dissipation. Substitution is valid when RoHS3 compliance is acceptable or required. If military-grade qualification (MIL-PRF-19500) is a design requirement, the M5KP70AE3 must be retained.

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

A: Both are axial through-hole packages with identical mechanical footprints and lead spacing. DO-204AR is the military designation; P600 is the commercial equivalent. They are mechanically and electrically interchangeable in PCB applications.

Q: Is the 1.1A difference in peak pulse current (44A vs. 45.1A) significant?

A: The 5KP70A's 45.1A rating is within acceptable tolerance for this component category and provides additional safety margin. Both parts meet the 5000W peak pulse power specification.

Q: Why does the 5KP70A have a higher operating temperature maximum?

A: The 5KP70A operates to 175°C junction temperature versus 150°C for the M5KP70AE3. This extended range does not affect substitution compatibility; applications requiring only -65°C to 150°C operation are unaffected.

Q: What does "REACH Affected" mean for the 5KP70A?

A: REACH Affected indicates the component contains substances of concern regulated under EU REACH regulations. The M5KP70AE3 is REACH Unaffected. Selection depends on end-market regulatory requirements.

Q: Can I use either part interchangeably in my design?

A: Electrical and mechanical interchangeability is confirmed. Regulatory compliance requirements determine which part is appropriate for your specific application. Verify RoHS and REACH compliance requirements with your procurement or quality department before substitution.