MP4KE8.2AE3 Equivalent & Substitute Parts

Part Overview

The MP4KE8.2AE3 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose transient protection applications. This through-hole component operates with a 7.02V reverse standoff voltage and provides 12.1V maximum clamping voltage at peak pulse current. The device is classified as Active product status and carries Military grade qualification under MIL-PRF-19500. Substitute parts are identified to address inventory availability, packaging format requirements, or compliance specifications while maintaining electrical and mechanical compatibility within defined parameters.

Substiute Parts

MP4KE8.2AE3

Microchip TechnologyIn Stock: 1146MP4KE8.2AE3 Datasheet

Current PartRFQ

P4KE8.2A

Taiwan Semiconductor CorporationIn Stock: 641P4KE8.2A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MP4KE8.2AE3 is based on electrical parameter equivalence and mechanical compatibility. The primary substitute identified is the P4KE8.2A, manufactured by Taiwan Semiconductor Corporation. Both devices share the same base product number (P4KE8.2) and maintain identical electrical specifications across critical parameters: Voltage - Reverse Standoff (7.02V), Voltage - Breakdown (7.79V), and Voltage - Clamping (12.1V). The devices are functionally equivalent in the following key parameters:

• Reverse standoff voltage: 7.02V (identical)
• Breakdown voltage minimum: 7.79V (identical)
• Clamping voltage maximum: 12.1V (identical)
• Package format: DO-204AL (DO-41) axial through-hole (identical)
• Unidirectional channel configuration: 1 channel (identical)
• Peak pulse power rating: 400W (identical)

Differences exist in peak pulse current specification (33A vs. 34A), operating temperature range (-65°C ~ 150°C vs. -55°C ~ 175°C), packaging format (Bulk vs. Tape & Reel), RoHS compliance status, and manufacturer. These differences do not preclude substitution when the application requirements fall within the overlapping parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

Selection between MP4KE8.2AE3 and P4KE8.2A is determined by application requirements and compliance mandates:

MP4KE8.2AE3 (Microchip Technology) is selected when:

• Military-grade qualification under MIL-PRF-19500 is required
• Bulk packaging format is specified for assembly processes
• Operating temperature range of -65°C to 150°C is required
• RoHS non-compliance is acceptable within the application scope

P4KE8.2A (Taiwan Semiconductor Corporation) is selected when:

• ROHS3 compliance is mandated by design or regulatory requirements
• Tape & Reel packaging format is required for automated assembly
• Operating temperature range of -55°C to 175°C is required
• Peak pulse current specification of 34A provides additional margin over 33A requirement

Both devices maintain identical electrical performance across voltage parameters (standoff, breakdown, and clamping) and power dissipation ratings. The choice between substitutes is driven by compliance certifications, packaging requirements, and temperature operating range specifications rather than electrical functionality.

Frequently Asked Questions (FAQ)

Q: Can P4KE8.2A replace MP4KE8.2AE3 in all applications?

A: Electrical substitution is valid when the application operating temperature range falls within -55°C to 150°C and ROHS3 compliance is acceptable. The identical voltage parameters (7.02V standoff, 7.79V breakdown, 12.1V clamping) and 400W power rating ensure functional equivalence. Military-grade MIL-PRF-19500 qualification is unique to the MP4KE8.2AE3 and cannot be substituted.

Q: What is the difference in peak pulse current between these devices?

A: The MP4KE8.2AE3 is rated for 33A peak pulse current, while the P4KE8.2A is rated for 34A. The P4KE8.2A provides 1A additional current capacity. Both devices meet the same 400W peak pulse power specification. Applications requiring exactly 33A or lower operate within specification for both devices.

Q: Are the packages physically identical?

A: Both devices use the DO-204AL (DO-41) axial through-hole package format. Physical dimensions and pin configuration are identical. The difference is in supply packaging: MP4KE8.2AE3 is supplied in Bulk format, while P4KE8.2A is supplied in Tape & Reel (TR) format. This affects procurement and assembly processes but not circuit board layout or component placement.

Q: What is the temperature operating range overlap?

A: The MP4KE8.2AE3 operates from -65°C to 150°C, while the P4KE8.2A operates from -55°C to 175°C. The overlapping range is -55°C to 150°C. Applications requiring operation below -55°C must use the MP4KE8.2AE3. Applications requiring operation above 150°C must use the P4KE8.2A.

Q: Does RoHS compliance affect electrical performance?

A: RoHS compliance status does not affect electrical performance or voltage/current specifications. The ROHS3 compliance of P4KE8.2A indicates material composition restrictions on hazardous substances. Selection based on RoHS status is driven by regulatory or customer requirements, not by circuit functionality.

Q: Can these devices be used interchangeably in PCB designs?

A: Yes, for PCB layout and schematic purposes, these devices are interchangeable. Both use identical DO-204AL (DO-41) through-hole packages with the same pin configuration and spacing. Component selection in design documentation should specify either device based on compliance and packaging requirements for the specific production environment.