MP6KE33AE3 Equivalent & Substitute Parts

Part Overview

The MP6KE33AE3 is an active-status transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This unidirectional zener-type TVS diode operates with a reverse standoff voltage of 28.2V and provides clamping protection at 45.7V with a peak pulse current rating of 13.2A. The component is packaged in a T-18 axial through-hole configuration and qualifies under MIL-PRF-19500 military specifications. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring identical electrical performance and mechanical compatibility.

Substiute Parts

MP6KE33AE3

Microchip TechnologyIn Stock: 1003MP6KE33AE3 Datasheet

Current PartRFQ

P6KE33A

Fairchild SemiconductorIn Stock: 15519P6KE33A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MP6KE33AE3 is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 28.2V
• Voltage - Breakdown (Min): 31.4V
• Voltage - Clamping (Max) @ Ipp: 45.7V
• Current - Peak Pulse (10/1000µs): minimum 13.2A
• Power - Peak Pulse: 600W
• Type: Zener, Unidirectional (1 channel)
• Applications: General Purpose

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package Configuration: Axial

The substitute part P6KE33A, manufactured by Fairchild Semiconductor, meets all electrical equivalence requirements with identical voltage ratings and clamping characteristics. The peak pulse current of 13.8A exceeds the minimum requirement of 13.2A, providing equivalent or superior performance. Both components are active-status products suitable for direct substitution in through-hole circuit board designs.

Parameter Comparison

Engineering Selection Recommendations

MP6KE33AE3 (Microchip Technology): The primary component is an active-status product with military-grade qualification under MIL-PRF-19500. This part is suitable for applications requiring military specification compliance and operates across a temperature range of -65°C to 150°C. The T-18 axial package provides standard through-hole mounting compatibility. Current inventory status indicates 949 pieces available.

P6KE33A (Fairchild Semiconductor): This substitute part is an active-status product offering identical electrical performance with a peak pulse current rating of 13.8A, which exceeds the MP6KE33AE3 specification of 13.2A. The operating temperature range extends to 175°C at the upper limit, providing enhanced thermal performance. The DO-15 (DO-204AC) axial package is mechanically compatible with standard through-hole circuit board designs. Current inventory status indicates 15,478 pieces available, supporting high-volume procurement requirements.

Both components are RoHS non-compliant and classified under ECCN EAR99 and HTSUS 8541.10.0080. Selection between these parts depends on specific military qualification requirements, thermal operating conditions, and inventory availability constraints.

Frequently Asked Questions (FAQ)

Q: Can P6KE33A replace MP6KE33AE3 in existing circuit designs?

A: Yes. Both components share identical electrical specifications for reverse standoff voltage (28.2V), breakdown voltage (31.4V), and clamping voltage (45.7V). The P6KE33A peak pulse current of 13.8A meets or exceeds the MP6KE33AE3 requirement of 13.2A. Both are unidirectional zener-type TVS diodes with through-hole axial mounting. Direct substitution is electrically and mechanically compatible.

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

A: Both T-18 and DO-15 (DO-204AC) are axial through-hole package styles used for two-terminal diode components. The primary difference is the physical envelope and lead diameter. Both packages are compatible with standard through-hole circuit board designs and PCB footprints designed for axial diodes. Package selection depends on existing board layout and lead spacing requirements.

Q: Does the P6KE33A require different PCB layout considerations?

A: No. Both the MP6KE33AE3 and P6KE33A are axial through-hole components with identical electrical function. PCB layout, trace routing, and thermal management considerations remain unchanged. Lead spacing and hole diameter may require verification against specific package datasheets, but both components are designed for standard through-hole assembly processes.

Q: Why does P6KE33A have a higher operating temperature maximum?

A: The P6KE33A operates to 175°C junction temperature, compared to 150°C for the MP6KE33AE3. This extended thermal rating reflects the Fairchild device design and does not affect electrical equivalence. Applications operating within the MP6KE33AE3 temperature range (-65°C to 150°C) experience identical performance from both components.

Q: Are there compliance or certification differences between these parts?

A: The MP6KE33AE3 carries military-grade qualification under MIL-PRF-19500. The P6KE33A does not reference this military specification in the provided data. Applications requiring explicit military specification compliance must use the MP6KE33AE3. Both components are RoHS non-compliant and REACH unaffected.

Q: What inventory considerations apply to these substitutes?

A: The MP6KE33AE3 has 949 pieces in current stock, while the P6KE33A has 15,478 pieces available. For high-volume or time-sensitive procurement, the P6KE33A offers significantly greater inventory availability. Both components are active-status products with established supply chains.