MP6KE120AE3 Equivalent & Substitute Parts

Part Overview

The MP6KE120AE3 is an active-status Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology. This unidirectional zener-type device is designed for general-purpose transient voltage suppression applications in through-hole configurations. The part operates with a reverse standoff voltage of 102V and provides clamping at 165V maximum, with a peak pulse current rating of 3.6A and peak pulse power of 600W. The device is qualified to MIL-PRF-19500 military standards and operates across a temperature range of -65°C to 150°C.

Equivalent and substitute parts are identified based on matching critical electrical parameters: reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, and power dissipation capabilities. Mechanical compatibility through through-hole axial packaging is also a primary substitution criterion.

Substiute Parts

MP6KE120AE3

Microchip TechnologyIn Stock: 705MP6KE120AE3 Datasheet

Current PartRFQ

P6KE120A

Fairchild SemiconductorIn Stock: 6751P6KE120A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MP6KE120AE3 are identified based on electrical parameter equivalence within the TVS diode category. The substitution logic is based on the following critical parameters:

Electrical Equivalence Criteria:

• Reverse standoff voltage: 102V (typical)
• Breakdown voltage minimum: 114V
• Clamping voltage maximum at peak pulse current: 165V
• Peak pulse current capability: ≥3.6A
• Peak pulse power dissipation: 600W
• Unidirectional zener-type configuration

Mechanical Compatibility Criteria:

• Through-hole axial mounting configuration
• Package types: T-18 (DO-204AC/DO-15) or equivalent axial packages

Parts meeting these electrical and mechanical parameters are classified as direct substitutes. The P6KE120A from Fairchild Semiconductor meets all specified electrical parameters and operates in a compatible through-hole axial package (DO-15/DO-204AC).

Parameter Comparison

Engineering Selection Recommendations

MP6KE120AE3 (Microchip Technology):

• Primary selection for applications requiring MIL-PRF-19500 military qualification
• Suitable for military-grade or defense-sector applications
• Operating temperature range: -65°C to 150°C
• RoHS non-compliant status applies to this part

P6KE120A (Fairchild Semiconductor):

• Direct electrical substitute with equivalent voltage and power ratings
• Peak pulse current rating of 3.8A provides margin above the 3.6A requirement
• Extended operating temperature range: -50°C to 175°C accommodates higher-temperature environments
• Compatible through-hole axial package (DO-15/DO-204AC)
• Active product status ensures continued availability

Both parts are active-status products suitable for general-purpose transient voltage suppression. Selection between them depends on application-specific requirements: military qualification needs favor the MP6KE120AE3, while applications requiring extended temperature operation or higher current margin favor the P6KE120A.

Frequently Asked Questions (FAQ)

Q: Can the P6KE120A directly replace the MP6KE120AE3 in existing designs?

A: Yes. Both devices share identical electrical specifications for reverse standoff voltage (102V), breakdown voltage (114V), clamping voltage (165V), and peak pulse power (600W). The P6KE120A provides a higher peak pulse current rating (3.8A vs. 3.6A), making it electrically compatible. Both use through-hole axial mounting. Physical package dimensions should be verified for PCB layout compatibility, as the T-18 and DO-15 packages have similar but potentially different lead spacing.

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

A: Both are through-hole axial packages for TVS diodes. T-18 and DO-15 (DO-204AC) are industry-standard designations for similar axial configurations. Lead diameter, spacing, and overall length may vary slightly between manufacturers. PCB footprint compatibility should be confirmed before substitution.

Q: Does the P6KE120A meet military qualification requirements?

A: The P6KE120A specifications provided do not include MIL-PRF-19500 qualification. The MP6KE120AE3 is explicitly qualified to MIL-PRF-19500. Applications requiring military-grade certification must use the MP6KE120AE3 or verify alternative parts against specific military qualification requirements.

Q: Are there temperature range considerations when substituting these parts?

A: The MP6KE120AE3 operates from -65°C to 150°C (TJ). The P6KE120A operates from -50°C to 175°C (TJ). The P6KE120A supports a wider temperature range and higher maximum junction temperature. Applications operating below -50°C require the MP6KE120AE3. Applications requiring operation above 150°C benefit from the P6KE120A's extended range.

Q: What does "peak pulse current" mean in the context of TVS diode selection?

A: Peak pulse current (Ipp) is the maximum instantaneous current the TVS diode can conduct during a transient event, measured under standard pulse conditions (10/1000µs waveform). The MP6KE120AE3 is rated for 3.6A peak pulse current, while the P6KE120A is rated for 3.8A. Both ratings are sufficient for applications designed around the 3.6A specification.

Q: How do I verify package compatibility on my PCB?

A: Obtain the detailed package drawings for both the T-18 (Microchip) and DO-15 (Fairchild) from the respective manufacturer datasheets. Compare lead diameter, lead spacing (pitch), and overall body length. Verify that the substitute part's leads fit the existing PCB holes and that the body does not interfere with adjacent components.