Amphenol RF 122375 TNC Connector Plug Equivalent & Substitute Parts

Part Overview

The Amphenol RF 122375 is an active TNC connector plug designed for 50-ohm RF coaxial cable applications. This male pin connector features crimp termination for both center contact and shield, supporting frequencies up to 11 GHz with a maximum voltage rating of 500 V. The connector is compatible with RG-179, RG-188, RG-316 double braid, and M17/152-RD316 cable groups. As an active product with ROHS3 compliance and unlimited moisture sensitivity rating, the 122375 serves as a standard component in RF signal transmission systems. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when specific application requirements necessitate alternative connector styles or termination methods.

Substiute Parts

122375

Amphenol RFIn Stock: 1126122375 Datasheet

Current PartRFQ

0731740083

MolexIn Stock: 26470731740083 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Amphenol RF 122375 are identified based on electrical and mechanical compatibility within the 50-ohm coaxial connector category. The primary substitution criteria include impedance matching (50 Ohms), connector type classification (male pin plug), mounting configuration (free hanging in-line), termination method (crimp-based), and compliance certifications (ROHS3).

The Molex 0731740083 is listed as a substitute part. While this part differs in connector style (BNC versus TNC), it maintains electrical equivalence through identical impedance (50 Ohms), matching male pin plug configuration, free hanging in-line mounting, crimp shield termination, and equivalent material specifications (brass body with nickel finish and gold-plated center contact). Both parts support 500 mating cycles and carry ROHS3 compliance.

Key parameters determining substitution eligibility:

• Impedance: 50 Ohms (required match)
• Connector Type: Plug, Male Pin (required match)
• Mounting Type: Free Hanging (In-Line) (required match)
• Shield Termination: Crimp (required match)
• Body Material and Finish: Brass with Nickel finish (required match)
• Center Contact Plating: Gold (required match)
• Mating Cycles: 500 (required match)
• RoHS Compliance: ROHS3 (required match)

Parameter Comparison

Engineering Selection Recommendations

Both the Amphenol RF 122375 and Molex 0731740083 are active products with ROHS3 compliance and unlimited moisture sensitivity ratings, making them suitable for production environments with equivalent regulatory requirements.

The primary distinction between these parts is the connector style and fastening mechanism. The Amphenol RF 122375 employs a threaded TNC interface, while the Molex 0731740083 uses a bayonet lock BNC interface. This difference affects mechanical mating compatibility with existing cable assemblies and panel-mounted receptacles. Selection between these parts depends on the specific connector interface required by the application's mating equipment.

Both parts maintain identical electrical specifications for impedance (50 Ohms), contact configuration (male pin plug), and termination methods (crimp-based). Material composition differs in the dielectric element: the 122375 uses polyoxymethylene acetal, while the 0731740083 uses polypropylene. This material difference does not affect the 50-ohm impedance matching or electrical performance within the specified operating parameters.

The Amphenol RF 122375 provides a specified insertion loss of 0.18 dB. The Molex 0731740083 does not provide insertion loss specification in the available data. Both parts support 500 mating cycles and are constructed with brass bodies featuring nickel finish and gold-plated center contacts.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0731740083 BNC connector directly replace the Amphenol RF 122375 TNC connector?

A: Direct mechanical replacement is not possible due to different fastening types. The 122375 uses threaded TNC coupling, while the 0731740083 uses bayonet lock BNC coupling. These connectors mate with different receptacle styles and cannot be interchanged without changing the mating equipment.

Q: Are both connectors electrically equivalent for 50-ohm RF applications?

A: Both connectors maintain 50-ohm impedance and support equivalent electrical performance within their specified parameters. Both are male pin plugs with crimp shield termination and identical material specifications for body and contact plating.

Q: What is the difference in dielectric material between these connectors?

A: The Amphenol RF 122375 uses polyoxymethylene (POM) acetal as the dielectric material, while the Molex 0731740083 uses polypropylene (PP). Both materials are suitable for 50-ohm RF applications and do not affect impedance matching.

Q: Do both parts meet the same compliance standards?

A: Both the Amphenol RF 122375 and Molex 0731740083 are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1). Both carry the same ECCN classification (EAR99) and HTSUS code (8536.69.4010).

Q: What cable groups are compatible with each connector?

A: The Amphenol RF 122375 is compatible with RG-179, RG-188, RG-316 double braid, and M17/152-RD316 cable groups. The Molex 0731740083 is compatible with RG-58C, RG-141A, and RG-303 cable groups. Cable compatibility differs between the two connectors and must be verified for specific applications.

Q: Can the Molex 0731740083 be terminated using solder instead of crimp?

A: The Molex 0731740083 supports both crimp and solder contact termination methods. The Amphenol RF 122375 specifies crimp termination only.

Q: What is the maximum frequency rating for each connector?

A: The Amphenol RF 122375 is rated to 11 GHz maximum frequency. The Molex 0731740083 does not provide a specified maximum frequency rating in the available technical data.

Q: Are both connectors available in equivalent packaging quantities?

A: The Amphenol RF 122375 is supplied in bag packaging with 1072 pieces in stock. The Molex 0731740083 is supplied in bulk packaging with 2537 pieces in stock. Packaging format and inventory availability differ between suppliers.