MT334B Equivalent & Substitute Parts

Part Overview

The MT334B is a 6.35mm (0.250", 1/4") stereo phone jack connector manufactured by Switchcraft Inc., designed for panel mount applications with solder eyelet termination. This connector features three conductors (TRS configuration) with internal switching capability and a grounding tab. The MT334B is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and component procurement.

Substiute Parts

MT334B

Switchcraft Inc.In Stock: 916MT334B Datasheet

Current PartRFQ

MT334BX

Switchcraft Inc.In Stock: 1092MT334BX Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MT334B is determined by strict equivalence across the following critical parameters:

• Connector type and gender (Phone Jack, Female)
• Signal configuration (Stereo, 3 Conductor TRS)
• Mating diameter specification (6.35mm / 0.250" / 1/4")
• Actual diameter tolerance (0.253" / 6.43mm)
• Contact count (3 Conductors, 5 Contacts)
• Internal switching configuration (Two Switches)
• Mounting method (Panel Mount)
• Termination style (Solder Eyelet)
• Contact material and plating (Palladium with Gold plating)
• Operating temperature range (-20°C ~ 65°C)
• Series designation (MT-JAX®)

The MT334BX meets all these criteria and is classified as an active product, making it a direct functional equivalent suitable for replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The MT334BX is the direct substitute for the MT334B. Both parts are manufactured by Switchcraft Inc. within the MT-JAX® series and maintain identical electrical and mechanical specifications across all critical parameters.

The primary distinction between these parts is product status and regulatory compliance. The MT334B is obsolete, while the MT334BX is an active product. Additionally, the MT334BX achieves ROHS3 compliance, whereas the MT334B is RoHS non-compliant. For new designs or ongoing production requiring regulatory compliance with current environmental standards, the MT334BX is the appropriate selection.

Both parts share identical REACH and ECCN classifications, ensuring equivalent export and regulatory treatment.

Frequently Asked Questions (FAQ)

Q: Can the MT334BX be used as a direct replacement for the MT334B in existing designs?

A: Yes. The MT334BX maintains identical electrical and mechanical specifications, including connector type, signal configuration, mating diameter, contact count, switching configuration, mounting method, and termination style. Physical and functional compatibility is complete.

Q: What is the difference between MT334B and MT334BX?

A: The parts are electrically and mechanically identical. The MT334B is obsolete, while the MT334BX is an active product. The MT334BX additionally meets ROHS3 compliance requirements, whereas the MT334B does not.

Q: Are there packaging differences between MT334B and MT334BX?

A: The MT334B packaging is not specified in available documentation. The MT334BX is supplied in bulk packaging. Confirm packaging requirements with your procurement specification.

Q: What is the operating temperature range for these connectors?

A: Both the MT334B and MT334BX operate within the range of -20°C to 65°C.

Q: Are these connectors suitable for audio applications?

A: These are 6.35mm stereo phone jack connectors with TRS (3 conductor) configuration, designed for standard headphone and audio jack applications. Confirm suitability for your specific application requirements.

Q: What contact material is used in these connectors?

A: Both connectors use palladium (Pd) contact material with gold plating for enhanced conductivity and corrosion resistance.