P6KE6.8-G Equivalent & Substitute Parts

Part Overview

The P6KE6.8-G is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Comchip Technology, designed for general-purpose transient voltage protection applications. This component features a 5.5V reverse standoff voltage and 10.8V maximum clamping voltage with 55.56A peak pulse current capability in a through-hole DO-15 package. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations where legacy component specifications must be maintained.

Substiute Parts

P6KE6.8-G

Comchip TechnologyIn Stock: 1207P6KE6.8-G Datasheet

Current PartRFQ

1N5629

Littelfuse Inc.In Stock: 10051N5629 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6KE6.8-G is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage Rating Match: Reverse standoff voltage of 5.5V (typical), breakdown voltage minimum of 6.12V, and maximum clamping voltage of 10.8V
• Current Handling: Peak pulse current capability within the specified 10/1000µs pulse profile
• Package Compatibility: Through-hole axial configuration suitable for DO-13 or DO-15 packages
• Thermal Performance: Operating temperature range of -55°C to 150°C (junction temperature)
• Functional Type: Unidirectional zener-type TVS diode for general-purpose transient suppression

The 1N5629 manufactured by Littelfuse Inc. meets these substitution criteria through electrical parameter equivalence and compatible through-hole mounting configuration.

Parameter Comparison

Engineering Selection Recommendations

Both the P6KE6.8-G and 1N5629 are classified as obsolete products. Selection between these components should be based on the following engineering considerations:

Electrical Equivalence: The 1N5629 provides identical voltage ratings (5.5V standoff, 6.12V breakdown minimum, 10.8V clamping maximum) and thermal operating range (-55°C to 150°C), ensuring functional compatibility in transient suppression applications.

Power Dissipation: The 1N5629 offers superior peak pulse power rating of 1500W compared to the P6KE6.8-G at 600W. This provides additional margin in applications subject to high-energy transient events.

Package Consideration: The P6KE6.8-G uses DO-15 packaging while the 1N5629 uses DO-13 packaging. Both are through-hole axial configurations; however, physical board layout and PCB hole spacing must be verified for mechanical compatibility.

Compliance Status: The 1N5629 is noted as RoHS non-compliant. If RoHS compliance is required for the application, alternative sourcing or design review may be necessary.

Frequently Asked Questions (FAQ)

Q: Can the 1N5629 directly replace the P6KE6.8-G in existing designs?

A: Electrical substitution is valid based on identical voltage ratings and thermal specifications. Physical package differences (DO-13 vs. DO-15) require verification of PCB layout compatibility, including lead spacing and hole diameter requirements.

Q: What is the significance of the higher power rating on the 1N5629?

A: The 1N5629's 1500W peak pulse power rating versus the P6KE6.8-G's 600W indicates greater energy dissipation capability during transient events. This provides additional design margin but does not alter the voltage clamping characteristics.

Q: Are there any compliance differences between these parts?

A: The 1N5629 is RoHS non-compliant, while the P6KE6.8-G status is not specified in the provided data. Applications requiring RoHS compliance should confirm regulatory requirements before substitution.

Q: How do the DO-13 and DO-15 packages differ mechanically?

A: Both are through-hole axial packages with different physical dimensions and lead spacing. PCB design files must be reviewed to ensure the substitute package fits existing hole patterns and clearance requirements.

Q: What peak pulse current does the 1N5629 support?

A: The 1N5629 peak pulse current specification is not provided in the available data. The P6KE6.8-G supports 55.56A at 10/1000µs pulse profile; verification of 1N5629 current ratings is recommended for applications with specific current requirements.