BU-31102-2 Equivalent & Substitute Parts

Part Overview

The BU-31102-2 is a stackable banana plug connector manufactured by Mueller Electric Co, designed for solder termination with standard banana plug diameter and free-hanging (in-line) mounting. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations. The connector features red insulation with sheathed design suitable for 0.156" (4.0mm) diameter wire applications.

Substiute Parts

BU-31102-2

Mueller Electric CoIn Stock: 987BU-31102-2 Datasheet

Current PartRFQ

6721-2

Pomona ElectronicsIn Stock: 15126721-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BU-31102-2 is determined by strict alignment of the following parameters:

• Type: Banana Plug, Stackable configuration
• Gender: Male connector
• Plug/Mating Plug Diameter: Standard Banana specification
• Mounting Type: Free Hanging (In-Line) orientation
• Termination Method: Solder connection
• Insulation: Sheathed design
• Color: Red
• Wire Gauge Compatibility: 0.156" (4.0mm) diameter or equivalent AWG rating

The substitute part 6721-2 from Pomona Electronics meets all critical functional parameters required for direct substitution in applications currently utilizing the BU-31102-2.

Parameter Comparison

Engineering Selection Recommendations

The 6721-2 from Pomona Electronics serves as the direct functional equivalent for the obsolete BU-31102-2. Both connectors share identical mechanical and electrical interface specifications: stackable banana plug configuration, male gender, standard banana diameter, free-hanging mounting, solder termination, and sheathed red insulation.

The 6721-2 is currently in active production status, ensuring availability for replacement and new applications. Wire gauge compatibility is maintained between the 0.156" (4.0mm) diameter specification of the original part and the 18 AWG rating of the substitute.

Compliance considerations: The BU-31102-2 is RoHS non-compliant, while the 6721-2 is REACH Unaffected. Both share identical ECCN (EAR99) and HTSUS (8536.69.8000) classifications. Selection between these parts should account for regulatory requirements applicable to the end application and geographic deployment.

Frequently Asked Questions (FAQ)

Q: What makes the 6721-2 a suitable substitute for the BU-31102-2?

A: Both connectors match across all critical functional parameters: stackable banana plug type, male gender, standard banana diameter, free-hanging mounting, solder termination, sheathed insulation, and red color. Wire gauge compatibility is maintained at 0.156" (4.0mm) diameter / 18 AWG.

Q: Are there mechanical compatibility concerns between these connectors?

A: No. Both connectors conform to standard banana plug specifications for diameter and mating interface. The stackable design and free-hanging mounting configuration are identical, ensuring direct mechanical compatibility in existing applications.

Q: What is the difference in body material between these parts?

A: The BU-31102-2 uses Polyamide (PA) Nylon, while the 6721-2 uses Lucel. Both materials provide adequate insulation and mechanical support for the connector application. Material selection should be evaluated based on specific environmental and thermal requirements of the end application.

Q: How do the contact materials differ?

A: The BU-31102-2 contact material is not specified in available documentation. The 6721-2 features Beryllium Copper contacts with Nickel finish, providing enhanced conductivity and corrosion resistance compared to standard materials.

Q: What are the operating temperature ranges?

A: The BU-31102-2 operating temperature is not specified. The 6721-2 operates across -10°C to 55°C. Applications requiring operation outside this range should be evaluated separately.

Q: Are there packaging differences?

A: The BU-31102-2 packaging is not specified. The 6721-2 is supplied in Bulk packaging. Verify packaging requirements for your procurement and assembly processes.

Q: What is the inventory status of these parts?

A: The BU-31102-2 has 923 pieces in stock (obsolete status). The 6721-2 has 1417 pieces in stock (active status). The active status of the 6721-2 provides greater long-term availability assurance.