Switchcraft 121PKG Mono 6.35mm Barrel Connector - Equivalent & Substitute Parts

Part Overview

The Switchcraft 121PKG is a 6.35mm (0.250", 1/4") headphone phone jack mono connector designed for free-hanging in-line applications. This shielded barrel connector features solder eyelet termination and is constructed with copper alloy housing and nickel-plated contacts. The part is currently active in production with ROHS3 compliance and REACH unaffected status. Equivalent and substitute parts are identified when component availability is limited, procurement lead times are extended, or inventory requirements necessitate alternative sourcing options while maintaining identical electrical and mechanical performance.

Substiute Parts

121PKG

Switchcraft Inc.In Stock: 762121PKG Datasheet

Current PartRFQ

121

Switchcraft Inc.In Stock: 1633121 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Switchcraft 121PKG is determined by strict equivalence across the following critical parameters:

• Connector type classification as phone jack
• Mono signal line configuration
• 6.35mm (0.250", 1/4") headphone mating diameter
• 2 conductors and 2 contacts
• Female gender
• Free hanging in-line mounting type
• Solder eyelet termination
• Shielded construction
• Nickel contact plating
• Copper alloy body material
• Cable opening dimension of 0.266" (6.76mm)
• ROHS3 compliance
• REACH unaffected status

The substitute part Switchcraft 121 meets all these criteria and is therefore electrically and mechanically equivalent to the 121PKG.

Parameter Comparison

Engineering Selection Recommendations

The Switchcraft 121 is a direct equivalent substitute for the 121PKG. Both parts are manufactured by Switchcraft Inc., belong to the Extension Jax® series, and maintain active product status. Both parts carry ROHS3 compliance and REACH unaffected certification, meeting current regulatory requirements for electronic component procurement.

The primary distinction between the two parts is packaging configuration. The 121PKG is supplied in individual packaging with 668 pieces in current inventory, while the 121 is supplied in bulk packaging with 1598 pieces in current inventory. The 121PKG includes 2 pieces per connector unit (1 connector and 1 handle), whereas the 121 does not specify included accessories.

Selection between these equivalent parts should be based on packaging requirements, inventory availability, and procurement specifications. Both parts deliver identical electrical and mechanical performance in 6.35mm mono headphone jack applications.

Frequently Asked Questions (FAQ)

Q: Can the Switchcraft 121 be used as a direct replacement for the 121PKG?

A: Yes. The 121 is electrically and mechanically equivalent to the 121PKG. Both parts share identical specifications for connector type, signal configuration, mating diameter, contact count, termination method, shielding, material composition, and regulatory compliance.

Q: What is the difference between the 121PKG and 121?

A: The primary difference is packaging. The 121PKG is individually packaged with included handle accessories, while the 121 is supplied in bulk packaging without specified accessories. Electrical and mechanical specifications are identical.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the 121PKG and 121 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component procurement.

Q: What is the cable opening dimension for these connectors?

A: Both the 121PKG and 121 feature a cable opening of 0.266" (6.76mm), accommodating standard audio cable gauges for 6.35mm mono headphone jack applications.

Q: Can these connectors be used in shielded audio applications?

A: Yes. Both the 121PKG and 121 are shielded connectors, suitable for applications requiring electromagnetic interference rejection in mono audio signal transmission.

Q: What termination method do these connectors use?

A: Both parts use solder eyelet termination, designed for direct soldering to printed circuit boards or cable assemblies without requiring additional crimping or mechanical fastening.