UJ-2B Equivalent & Substitute Parts Reference

Part Overview

The UJ-2B is a 4.39mm stereo phone jack connector manufactured by Switchcraft Inc., designed for panel mount applications with solder eyelet termination. This connector is part of the UNIJAX® series and serves as a standard interface for audio and signal applications requiring a 3-conductor TRS (Tip-Ring-Sleeve) configuration. The part is currently in active production status with 931 units available in new original stock, making it readily accessible for component selection and system integration.

Identifying equivalent and substitute parts is necessary when addressing inventory constraints, lead time requirements, packaging preferences, or when integrating components across different procurement channels while maintaining electrical and mechanical compatibility.

Substiute Parts

UJ-2B

Switchcraft Inc.In Stock: 1004UJ-2B Datasheet

Current PartRFQ

UJ2B

Switchcraft Inc.In Stock: 1052UJ2B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The UJ2B is classified as a direct equivalent to the UJ-2B based on strict parameter alignment. Substitution eligibility is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Connector type: Phone Jack (Female)
• Signal configuration: Stereo (3 Conductor, TRS)
• Mating diameter: 4.39mm (0.173")
• Contact count: 3 Conductors, 3 Contacts
• Termination method: Solder Eyelet(s)

Mechanical Compatibility Requirements:

• Mounting type: Panel Mount
• Thread size: 9/32"-32
• Body material: Copper Alloy
• Housing material: Thermoplastic
• Contact material: Brass, Copper Alloy

Regulatory Compliance Requirements:

• RoHS3 Compliant
• REACH Unaffected

The UJ2B maintains identical specifications across all critical parameters, confirming direct substitutability with the UJ-2B for applications requiring this connector configuration.

Parameter Comparison

Engineering Selection Recommendations

Component selection between UJ-2B and UJ2B should be based on the following criteria:

Product Status and Availability: Both parts are manufactured by Switchcraft Inc. and maintain active production status. The UJ2B offers higher inventory availability (1016 units) compared to UJ-2B (931 units), providing improved lead time assurance for high-volume procurement.

Regulatory Compliance: The UJ2B explicitly confirms ROHS3 compliance and REACH unaffected status. When regulatory documentation is required for end-product certification, the UJ2B provides certified compliance data suitable for direct submission to compliance authorities.

Packaging Configuration: The UJ2B is supplied in bulk packaging with included mounting hardware (nut and washer) and thread lock features. This packaging configuration reduces secondary procurement requirements for panel mount assembly operations.

Electrical and Mechanical Equivalence: Both parts maintain identical specifications for connector type, signal configuration, mating diameter, contact count, mounting type, termination method, and material composition. Direct substitution is supported without circuit redesign or mechanical modification.

Frequently Asked Questions (FAQ)

Q: Can UJ2B be used as a direct replacement for UJ-2B in existing designs?

A: Yes. Both connectors maintain identical electrical and mechanical specifications across all critical parameters including connector type, signal configuration (stereo TRS), mating diameter (4.39mm), contact count (3 conductors), mounting type (panel mount), termination method (solder eyelet), and material composition. Direct substitution is supported without design modification.

Q: What is the difference between the UJ-2B and UJ2B part numbers?

A: The part numbers represent different packaging and documentation configurations from Switchcraft Inc. The UJ2B includes mounting hardware (nut and washer) and thread lock features in bulk packaging, while the UJ-2B represents the base connector specification. Both parts are electrically and mechanically equivalent.

Q: Are there packaging considerations when switching between UJ-2B and UJ2B?

A: Yes. The UJ2B is supplied in bulk packaging with included mounting hardware and washer, reducing the need for separate procurement of fasteners. If your assembly process requires individual packaging or specific hardware configurations, verify packaging specifications with your supplier before order placement.

Q: What compliance certifications apply to these connectors?

A: The UJ2B is certified as ROHS3 compliant and REACH unaffected. These certifications confirm compliance with European Union restrictions on hazardous substances and chemical regulations. Compliance documentation should be obtained from Switchcraft Inc. for end-product certification requirements.

Q: Can these connectors be used interchangeably in audio and signal applications?

A: Yes. Both connectors are designed for stereo audio and signal applications requiring 3-conductor TRS configuration. The 4.39mm mating diameter and solder eyelet termination support standard audio jack applications. Verify mating plug specifications match the 4.39mm standard for your application.

Q: What is the thread size for panel mount installation?

A: Both connectors use 9/32"-32 thread size for panel mount installation. This specification determines the panel hole size and mounting hardware compatibility. Ensure panel drilling and fastening procedures conform to this thread specification.