Switchcraft 420 6.35mm Stereo Phone Plug Connector - Equivalent & Substitute Parts

Part Overview

The Switchcraft 420 is a 6.35mm (0.250", 1/4") stereo phone plug connector designed for headphone and audio applications. This male connector features a screw termination method with strain relief and shielding for reliable signal transmission in mono configurations. The product is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing maintenance, repair, and new design implementations where this connector type remains the required interface standard.

Substiute Parts

420

Switchcraft Inc.In Stock: 1102420 Datasheet

Current PartRFQ

420Z

Switchcraft Inc.In Stock: 1071420Z Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Switchcraft 420 is determined by strict equivalence across the following critical parameters:

• Mating Diameter: 6.35mm (0.250", 1/4") - Physical compatibility with mating receptacles
• Connector Type: Phone Plug - Functional interface standard
• Gender: Male - Directional compatibility requirement
• Signal Configuration: Mono - Electrical signal path specification
• Number of Contacts: 2 Conductors, 2 Contacts - Pin count and conductor count
• Termination Method: Screw - Cable attachment mechanism
• Mounting Type: Free Hanging (In-Line) - Installation configuration
• Shielding: Shielded - Electromagnetic interference protection
• Contact Material Plating: Tin - Electrical and corrosion resistance properties
• Body Material: Copper Alloy - Mechanical and electrical conductivity
• Housing Material: Thermoplastic - Insulation and durability characteristics

Substitute parts must maintain equivalence across all these parameters to ensure direct functional replacement without circuit redesign or mechanical modification.

Parameter Comparison

Engineering Selection Recommendations

The Switchcraft 420Z serves as a direct functional equivalent to the Switchcraft 420 based on matching electrical and mechanical specifications across all critical substitution parameters. Both connectors maintain identical mating diameter, contact configuration, termination method, and shielding characteristics required for 6.35mm mono phone plug applications.

The Switchcraft 420 is classified as obsolete. The 420Z maintains current availability with 977 units in stock, providing supply continuity for applications requiring this connector interface. Both parts are manufactured by Switchcraft Inc., ensuring consistency in design standards and manufacturing quality.

For new designs or ongoing maintenance applications, the Switchcraft 420Z is the appropriate selection where the 420 is no longer available. The substitute part maintains full electrical and mechanical compatibility with existing mating receptacles and cable assemblies designed for the original 420 connector.

Frequently Asked Questions (FAQ)

Q: Can the Switchcraft 420Z be used as a direct replacement for the Switchcraft 420?

A: Yes. The 420Z maintains equivalence across all critical parameters including mating diameter (6.35mm), connector type (phone plug), gender (male), contact configuration (2 conductors, 2 contacts), termination method (screw), mounting type (free hanging in-line), shielding, and material specifications. Direct substitution is supported without mechanical or electrical modification.

Q: What is the significance of the "Z" designation in the 420Z part number?

A: The "Z" suffix indicates a variant designation within the Switchcraft product line. The specific functional distinction between the 420 and 420Z is not detailed in the available technical documentation. Both parts maintain identical electrical and mechanical specifications for the 6.35mm mono phone plug connector category.

Q: Are there any compliance or certification differences between the 420 and 420Z?

A: The Switchcraft 420 is specified as ROHS3 compliant. RoHS compliance status for the 420Z is not provided in the available technical data. For applications requiring specific regulatory compliance verification, contact the manufacturer or authorized distributor for complete certification documentation on the 420Z.

Q: What cable termination method is used with these connectors?

A: Both the 420 and 420Z employ screw termination. Cable conductors are secured to the connector contacts using screw fasteners. This method provides reliable mechanical and electrical connection suitable for professional audio and headphone applications.

Q: Are these connectors suitable for stereo or mono applications?

A: These connectors are configured for mono signal transmission with 2 conductors and 2 contacts. The product description references "stereo" in the connector designation, but the electrical specification is mono. Verify application requirements against the 2-contact mono configuration before selection.

Q: What is the mating depth specification?

A: The mating length/depth is 1.200 inches (30.50mm). This dimension defines the insertion depth when the connector is fully mated with a compatible receptacle.