Keystone Electronics 8243 Spade Terminal Connector - Equivalent & Substitute Parts

Part Overview

The Keystone Electronics 8243 is an 8 stud spade terminal connector designed for 10-12 AWG wire applications. This non-insulated, flanged terminal features crimp termination and tin contact finish on copper (ETP) material. The component is classified as obsolete, necessitating identification of active equivalent parts to maintain supply chain continuity for applications requiring this specific terminal configuration.

Substiute Parts

8243

Keystone ElectronicsIn Stock: 10798243 Datasheet

Current PartRFQ

MU10-8FFBK

3MIn Stock: 970MU10-8FFBK Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Keystone Electronics 8243 is determined by strict equivalence across the following critical parameters:

• Stud/Tab Size: 8 stud configuration (electrical interface requirement)
• Wire Gauge Range: 10-12 AWG (conductor compatibility)
• Terminal Type: Flanged (mechanical form factor)
• Termination Method: Crimp (assembly process compatibility)
• Dimensional Specifications: Width (0.320"), length (0.730"), and termination length (0.250") must match exactly
• Contact Material and Finish: Copper ETP with tin plating (electrical and corrosion performance)
• Insulation Status: Non-insulated configuration

The 3M MU10-8FFBK meets all specified parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The 3M MU10-8FFBK is a qualified direct substitute for the obsolete Keystone Electronics 8243. Selection is supported by:

• Complete Parameter Equivalence: All critical electrical and mechanical specifications match exactly
• Active Product Status: The 3M component is in active production, ensuring long-term availability
• Regulatory Compliance: Both components maintain identical RoHS, REACH, ECCN, and HTSUS classifications
• Moisture Sensitivity: Both components carry MSL 1 (Unlimited) rating
• Supply Availability: 878 units of the 3M MU10-8FFBK are in stock

The substitution presents no technical or compliance barriers for applications currently using the Keystone 8243.

Frequently Asked Questions (FAQ)

Q: What makes the 3M MU10-8FFBK a direct substitute for the Keystone 8243?

A: The 3M component matches all critical parameters: 8 stud size, 10-12 AWG wire gauge, flanged terminal type, crimp termination, identical dimensions (0.320" width, 0.730" overall length), copper ETP material with tin finish, and non-insulated configuration. All regulatory classifications are equivalent.

Q: Are there any compatibility concerns when switching from Keystone 8243 to 3M MU10-8FFBK?

A: No. The components are mechanically and electrically interchangeable. Stud size, wire gauge range, and termination method are identical, ensuring compatibility with existing assembly equipment and mating connectors.

Q: Does the 3M MU10-8FFBK meet the same regulatory requirements?

A: Yes. Both components are RoHS Compliant, REACH Unaffected, classified as EAR99, and share the same HTSUS code (8536.90.4000). Moisture sensitivity levels are identical (MSL 1 - Unlimited).

Q: What is the difference between the Keystone 8243 and 3M MU10-8FFBK?

A: The primary difference is product status: Keystone 8243 is obsolete, while 3M MU10-8FFBK is active production. The 3M component features a butted seam design and belongs to the Scotchlok™ series. All functional and dimensional specifications are equivalent.

Q: Can I use the 3M MU10-8FFBK in new designs?

A: Yes. The active production status and full regulatory compliance of the 3M MU10-8FFBK make it suitable for new designs requiring 8 stud spade terminals for 10-12 AWG applications.