Switchcraft 255 6.35mm Mono Phone Plug Connector - Equivalent & Substitute Parts

Part Overview

The Switchcraft 255 is a 6.35mm (0.250", 1/4") mono headphone phone plug connector designed for solder termination applications. This connector features 2 conductors and 2 contacts with a free-hanging in-line mounting configuration. The product is currently listed as obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and new design applications requiring compatible 6.35mm mono phone plug functionality.

Substiute Parts

255

Switchcraft Inc.In Stock: 735255 Datasheet

Current PartRFQ

255X

Switchcraft Inc.In Stock: 754255X Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Switchcraft 255 is determined by the following critical parameters:

• Connector Type & Mating Diameter: Must be a phone plug with 6.35mm (0.250", 1/4") headphone mating diameter to ensure mechanical compatibility with existing jack receptacles.
• Signal Configuration: Must support mono signal lines to maintain functional equivalence.
• Contact Configuration: Must provide 2 conductors and 2 contacts for proper signal and ground routing.
• Gender: Must be male to match the plug function of the original component.
• Mounting Type: Must be free-hanging in-line to fit the same mechanical installation envelope.
• Body Material & Contact Plating: Copper alloy body with tin plating ensures equivalent electrical performance and corrosion resistance.
• Regulatory Compliance: Must maintain ROHS3 compliance and REACH unaffected status for regulatory continuity.

The Switchcraft 255X qualifies as a direct substitute based on these parameters. Variations in termination method (solder lug vs. solder), shielding configuration, and included accessories do not prevent substitution when the core electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

The Switchcraft 255X is a direct substitute for the obsolete Switchcraft 255. Both components maintain identical regulatory compliance status (ROHS3 Compliant, REACH Unaffected, EAR99 classification) and share the same HTSUS code, ensuring continuity in supply chain documentation and regulatory requirements.

The primary difference between the two components is the termination method: the 255 uses direct solder termination, while the 255X employs solder lug termination. This distinction affects installation methodology but does not compromise electrical performance or mechanical compatibility with 6.35mm headphone jack receptacles.

The 255X offers the additional benefit of active product status with current inventory availability, whereas the 255 is obsolete. For new designs and ongoing production, the 255X is the recommended selection. For legacy system repairs requiring exact form-factor matching, the 255X remains mechanically and electrically compatible.

Frequently Asked Questions (FAQ)

Q: Can the Switchcraft 255X directly replace the Switchcraft 255 in existing applications?

A: Yes. Both connectors share identical mating diameter (6.35mm), signal configuration (mono), contact count (2 conductors, 2 contacts), gender (male), and mounting type (free-hanging in-line). The difference in termination method (solder lug vs. solder) does not prevent substitution; it only affects the connection technique to the circuit board or cable.

Q: What is the significance of the shielding difference between the 255 and 255X?

A: The 255 is unshielded, while the 255X is shielded. Shielding provides additional electromagnetic interference (EMI) rejection. For audio applications, shielding is generally beneficial. If the original application specifically required unshielded operation, the shielded 255X will still function correctly but may alter EMI characteristics.

Q: Are there any regulatory or compliance concerns when substituting the 255 with the 255X?

A: No. Both components are ROHS3 compliant, REACH unaffected, and classified as EAR99. They share the same HTSUS code (8536.69.8000), ensuring regulatory continuity.

Q: What is the difference between solder and solder lug termination?

A: Solder termination (255) requires direct soldering of the connector leads to the circuit board or cable. Solder lug termination (255X) features pre-formed lugs that can be soldered or crimped, offering greater flexibility in installation methods and potentially improved mechanical stability in high-vibration environments.

Q: Is the 255X currently available?

A: Yes. The 255X is listed as active product status with 719 pieces in new original stock, compared to the obsolete 255 status. This makes the 255X the practical choice for new procurement.

Q: Do the included accessories differ between the two connectors?

A: Yes. The 255 includes 2 pieces (1 connector, 1 handle), while the 255X includes 3 pieces (1 connector, 1 handle, 1 insulator tube). The additional insulator tube in the 255X provides enhanced strain relief and insulation protection.