Amphenol RF 122405 TNC Connector Jack Equivalent & Substitute Parts

Part Overview

The Amphenol RF 122405 is a TNC connector jack with female socket configuration, designed for 50-ohm RF applications. This component features panel mount installation with bulkhead front-side nut fastening and crimp termination for both center contact and shield. The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary for ongoing maintenance, repair, and legacy system support where this connector type remains in service.

Substiute Parts

122405

Amphenol RFIn Stock: 1135122405 Datasheet

Current PartRFQ

031-6171

Amphenol RFIn Stock: 1877031-6171 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Amphenol RF 122405 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector Style: TNC
• Connector Type: Jack, Female Socket
• Impedance: 50 Ohms
• Contact Termination: Crimp
• Shield Termination: Crimp
• Mounting Type: Panel Mount
• Mounting Feature: Bulkhead - Front Side Nut
• Frequency - Max: 11 GHz
• Voltage Rating: 500 V
• Insertion Loss: 0.18 dB
• Mating Cycles: 500

The substitute part Amphenol RF 031-6171 meets all mandatory matching parameters. Both parts share identical electrical specifications, mechanical configuration, and performance characteristics. The primary differences are packaging format (Bag versus Bulk) and product status (Not For New Designs versus Active).

Parameter Comparison

Engineering Selection Recommendations

The Amphenol RF 031-6171 is a direct functional equivalent to the 122405 across all critical electrical and mechanical parameters. Selection between these parts should be based on the following engineering considerations:

Product Status: The 122405 carries "Not For New Designs" status, indicating manufacturer discontinuation. The 031-6171 maintains "Active" status, ensuring ongoing availability and manufacturer support.

Compliance and Certifications: Both parts maintain identical RoHS3 compliance, REACH status, and export classification (EAR99). No compliance barriers exist for substitution.

Enhanced Features in Substitute: The 031-6171 provides weatherproof ingress protection and documented operating temperature range (-65°C ~ 165°C), offering improved environmental robustness compared to the main part specification.

Cable Compatibility: The 031-6171 supports an expanded cable group including Belden 8214 in addition to the 9913, 9914, and LMR-400 cables supported by the 122405.

Packaging Consideration: The 122405 is supplied in bag packaging, while the 031-6171 is supplied in bulk packaging. Procurement quantities and handling procedures may differ accordingly.

For applications requiring the TNC jack female socket 50-ohm connector with panel mount bulkhead configuration, the 031-6171 is the recommended active-status equivalent.

Frequently Asked Questions (FAQ)

Q: Can the 031-6171 be used as a direct replacement for the 122405 in existing installations?

A: Yes. The 031-6171 matches all critical electrical and mechanical parameters of the 122405, including impedance (50 Ohms), frequency rating (11 GHz), voltage rating (500 V), insertion loss (0.18 dB), and mating cycle rating (500). Both parts feature identical TNC jack female socket configuration with crimp termination and panel mount bulkhead installation.

Q: What is the significance of the "Not For New Designs" status on the 122405?

A: This designation indicates the manufacturer has discontinued active development and promotion of this part number. The 031-6171, with "Active" status, represents the current production equivalent and is the recommended selection for new applications and ongoing procurement.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts deliver identical insertion loss (0.18 dB), impedance (50 Ohms), and frequency performance (11 GHz maximum). Electrical performance is equivalent across all specified parameters.

Q: How do the cable compatibility specifications differ?

A: The 122405 supports Belden 9913, 9914, and LMR-400 cables. The 031-6171 supports these same cables plus Belden 8214. The substitute part offers expanded cable compatibility without sacrificing support for the original cable group.

Q: What is the difference in packaging between these parts?

A: The 122405 is supplied in bag packaging, while the 031-6171 is supplied in bulk packaging. Bag packaging typically includes individual component sets with associated hardware. Bulk packaging may require separate procurement of fastening components depending on application requirements.

Q: Does the 031-6171 provide any environmental advantages?

A: Yes. The 031-6171 specifies weatherproof ingress protection and an operating temperature range of -65°C to 165°C. The 122405 does not provide these specifications. For applications in harsh or temperature-variable environments, the 031-6171 offers documented environmental performance.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the 122405 and 031-6171 are ROHS3 compliant and REACH affected. No compliance barriers exist for substitution in regulated markets.

Q: What is the mating cycle rating for these connectors?

A: Both parts are rated for 500 mating cycles, indicating equivalent mechanical durability and expected service life under normal connection/disconnection usage.