MP6KE9.1CAE3 Equivalent & Substitute Parts

Part Overview

The MP6KE9.1CAE3 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This bidirectional Zener-type TVS diode features a 7.78V reverse standoff voltage and 13.4V maximum clamping voltage, with a peak pulse current rating of 45A and 600W peak pulse power dissipation. The device is housed in a T-18 axial through-hole package and is qualified to MIL-PRF-19500 military standards. The MP6KE9.1CAE3 is currently active in production with 1055 units in stock. Equivalent substitute parts are identified based on matching electrical performance parameters and compatible mechanical packaging configurations.

Substiute Parts

MP6KE9.1CAE3

Microchip TechnologyIn Stock: 1120MP6KE9.1CAE3 Datasheet

Current PartRFQ

P6KE9.1CA

Taiwan Semiconductor CorporationIn Stock: 20501P6KE9.1CA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MP6KE9.1CAE3 are identified based on the following critical electrical and mechanical parameters:

Electrical Matching Criteria:

• Voltage - Reverse Standoff (Typ): 7.78V
• Voltage - Breakdown (Min): 8.65V
• Voltage - Clamping (Max) @ Ipp: 13.4V
• Power - Peak Pulse: 600W
• Type: Zener
• Bidirectional Channels: 1
• Applications: General Purpose

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package Category: Axial

The P6KE9.1CA manufactured by Taiwan Semiconductor Corporation qualifies as a direct substitute. This part maintains identical voltage specifications (7.78V standoff, 8.65V breakdown minimum, 13.4V clamping maximum) and equivalent power dissipation (600W peak pulse). The peak pulse current rating of 47A exceeds the 45A requirement of the main part. Both devices are Zener-type, single-channel bidirectional TVS diodes in through-hole axial packages suitable for general-purpose protection applications.

Parameter Comparison

Engineering Selection Recommendations

MP6KE9.1CAE3 (Microchip Technology):

• Primary selection for applications requiring MIL-PRF-19500 military qualification
• Specified for military-grade applications with formal qualification documentation
• RoHS non-compliant; suitable for legacy systems and military specifications
• Operating temperature range: -65°C to 150°C
• T-18 axial package form factor

P6KE9.1CA (Taiwan Semiconductor Corporation):

• Direct electrical substitute with identical voltage and power specifications
• ROHS3 compliant; suitable for commercial and industrial applications with RoHS requirements
• Extended operating temperature range: -55°C to 175°C
• DO-204AC (DO-15) axial package; mechanically compatible with T-18 axial footprint
• Higher peak pulse current rating (47A vs. 45A) provides additional margin
• Larger inventory availability (20,400 units vs. 1,055 units)

Selection between these parts depends on compliance requirements. The MP6KE9.1CAE3 is required for military applications demanding MIL-PRF-19500 qualification. The P6KE9.1CA is suitable for commercial and industrial applications where RoHS3 compliance is mandated and extended temperature operation is beneficial.

Frequently Asked Questions (FAQ)

Q: Can the P6KE9.1CA replace the MP6KE9.1CAE3 in all applications?

A: The P6KE9.1CA provides identical electrical performance (voltage and power specifications) and is mechanically compatible in through-hole axial applications. However, the MP6KE9.1CAE3 carries MIL-PRF-19500 military qualification, which the P6KE9.1CA does not possess. Substitution is valid only for applications that do not require military qualification documentation.

Q: What is the difference between the T-18 and DO-204AC (DO-15) packages?

A: Both are through-hole axial packages for TVS diodes. The T-18 is Microchip's designation; DO-204AC (DO-15) is the industry standard designation used by Taiwan Semiconductor. These packages are mechanically compatible and interchangeable in standard through-hole PCB layouts.

Q: Are there compliance differences between these parts?

A: Yes. The MP6KE9.1CAE3 is RoHS non-compliant and carries MIL-PRF-19500 military qualification. The P6KE9.1CA is ROHS3 compliant. Both are REACH unaffected and classified as EAR99 for export control purposes.

Q: Does the higher peak pulse current rating of the P6KE9.1CA (47A vs. 45A) affect compatibility?

A: No. A higher peak pulse current rating indicates the substitute part can handle equal or greater transient stress. This provides additional design margin and does not compromise compatibility with circuits designed for the 45A specification.

Q: What is the operating temperature difference, and does it matter?

A: The MP6KE9.1CAE3 operates from -65°C to 150°C; the P6KE9.1CA operates from -55°C to 175°C. The P6KE9.1CA has a wider temperature range. For applications operating within the MP6KE9.1CAE3 range, both parts are suitable. For applications requiring extended low-temperature operation below -55°C, only the MP6KE9.1CAE3 is appropriate.

Q: Why is inventory availability different between these parts?

A: Inventory levels reflect current stock and market demand. The P6KE9.1CA has significantly higher availability (20,400 units vs. 1,055 units), which may influence lead time and procurement decisions for non-military applications.