MU14-6FFBK Equivalent & Substitute Parts

Part Overview

The MU14-6FFBK is a 6 stud spade terminal connector manufactured by 3M, designed for crimp termination of 14-16 AWG wire. This component is part of the Scotchlok™ series and features a flanged terminal type with tin contact finish on copper (ETP) material. The part is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

MU14-6FFBK

3MIn Stock: 1024MU14-6FFBK Datasheet

Current PartRFQ

8239

Keystone ElectronicsIn Stock: 61848239 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MU14-6FFBK is determined by strict equivalence across the following critical parameters:

• Stud/Tab Size: 6 Stud (mechanical interface requirement)
• Wire Gauge Range: 14-16 AWG (electrical and mechanical compatibility)
• Terminal Type: Flanged (form factor and mounting compatibility)
• Termination Method: Crimp (assembly process compatibility)
• Overall Dimensions: 0.650" length and 0.300" width (physical fit in assemblies)
• Contact Material and Finish: Copper, ETP with tin plating (electrical performance and corrosion resistance)
• Insulation Type: Non-Insulated (functional requirement)

The Keystone Electronics part number 8239 meets all these criteria and is classified as an active product, providing a direct functional equivalent for the obsolete MU14-6FFBK.

Parameter Comparison

Engineering Selection Recommendations

The Keystone Electronics 8239 is the direct equivalent for the obsolete MU14-6FFBK. Selection of this substitute is based on:

• Complete Parameter Alignment: All critical electrical and mechanical specifications match exactly
• Active Product Status: The 8239 is currently in active production, ensuring availability and supply chain continuity
• Regulatory Compliance: Both parts share identical REACH and ECCN classifications, confirming regulatory equivalence
• RoHS3 Compliance: The 8239 meets RoHS3 requirements, providing enhanced environmental compliance compared to the obsolete original part
• Inventory Availability: The 8239 is available in bulk packaging with substantial stock levels (6150 pcs), supporting both prototype and production requirements

Frequently Asked Questions (FAQ)

Q: Can the Keystone Electronics 8239 be used as a direct replacement for the MU14-6FFBK in existing assemblies?

A: Yes. The 8239 matches all critical parameters including stud size, wire gauge range, terminal type, dimensions, and contact material specifications. No design modifications are required.

Q: What is the significance of the 6 stud designation?

A: The 6 stud size refers to the mechanical interface diameter of the terminal's ring opening. This dimension determines compatibility with mating connectors and studs. Both parts feature identical 6 stud sizing.

Q: Are there any compliance differences between the two parts?

A: Both parts are REACH Unaffected and classified as EAR99 for export control purposes. The 8239 additionally carries RoHS3 compliance certification, which the obsolete MU14-6FFBK does not specify.

Q: What packaging options are available for the 8239?

A: The 8239 is supplied in bulk packaging, suitable for production environments and high-volume applications.

Q: Why is the MU14-6FFBK classified as obsolete?

A: Obsolescence typically results from manufacturer discontinuation decisions. The active availability of the functionally equivalent 8239 provides a clear migration path for applications currently using the MU14-6FFBK.

Q: Are the termination dimensions identical between both parts?

A: Yes. Both parts specify 0.250" (6.35mm) for both ring center to termination length and termination length, ensuring identical crimp tool compatibility and wire termination characteristics.