Amphenol RF 112954 BNC Connector Plug Equivalent & Substitute Parts

Part Overview

The Amphenol RF 112954 is a BNC connector plug designed for 75 ohm coaxial cable applications. This component is a male pin, free-hanging (in-line) crimp connector with bayonet lock fastening. The part is classified as "Not For New Designs," indicating it has been superseded in the product lifecycle. Alternative equivalent parts are available that maintain the same electrical and mechanical specifications while offering active product status or improved operational characteristics.

Substiute Parts

112954

Amphenol RFIn Stock: 1292112954 Datasheet

Current PartRFQ

31-71013

Amphenol RFIn Stock: 136031-71013 Datasheet

SimilarRFQ

031-242-RFX

Amphenol RFIn Stock: 970031-242-RFX Datasheet

Parametric EquivalentRFQ

031-70013

Amphenol RFIn Stock: 975031-70013 Datasheet

Parametric EquivalentRFQ

031-80107

Amphenol RFIn Stock: 939031-80107 Datasheet

Parametric EquivalentRFQ

112133

Amphenol RFIn Stock: 1674112133 Datasheet

Parametric EquivalentRFQ

112139

Amphenol RFIn Stock: 1217112139 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Amphenol RF 112954 is determined by the following critical parameters:

Primary Substitution Criteria:

• Connector Style: BNC
• Connector Type: Plug, Male Pin
• Impedance: 75 Ohms
• Contact Termination: Crimp
• Shield Termination: Crimp
• Mounting Type: Free Hanging (In-Line)
• Fastening Type: Bayonet Lock
• Cable Group Compatibility: RG-179, 179A, 179B, 187, 187A, Belden 9221, M17/94-RG179
• Voltage Rating: 500 V
• Mating Cycles: 500

Secondary Considerations:

• Frequency - Max: 4 GHz (minimum acceptable)
• RoHS Status: ROHS3 Compliant
• Packaging format (Bag or Bulk)

Substitute parts must maintain all primary criteria. Variations in dielectric material, body material composition, operating temperature range, and included component count are permissible when the primary electrical and mechanical specifications remain constant.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Recommended for New Designs):

The following parts are direct functional equivalents with Active product status:

031-70013 is the primary recommended substitute. This part maintains all critical electrical and mechanical parameters identical to the 112954, including 75 ohm impedance, 4 GHz maximum frequency, and 500 V voltage rating. The 031-70013 carries Active product status and is ROHS3 compliant with REACH compliance documentation. Operating temperature range is specified as -65°C to 165°C.

031-80107 is an alternative equivalent with identical electrical specifications. This part differs in body material composition (Phosphor Bronze versus Brass) and includes five component pieces rather than four. Operating temperature range is -65°C to 165°C. Product status is Active.

112133 is functionally equivalent with Active product status. This part maintains 75 ohm impedance and 4 GHz frequency capability. Dielectric material differs (Polyoxymethylene/POM Acetal versus PTFE). Operating temperature range is not specified in available documentation.

Frequency-Limited Substitute:

31-71013 is electrically equivalent in all parameters except maximum frequency, which is rated at 2 GHz versus 4 GHz for the main part. This part is suitable only for applications with frequency requirements not exceeding 2 GHz. Product status is Active.

Not Recommended:

031-242-RFX has impedance of 50 ohms, which differs from the 75 ohm specification of the main part. This part is not suitable as a direct substitute.

112139 carries "Not For New Designs" status, identical to the main part, and therefore does not provide a path to active product status.

Frequently Asked Questions (FAQ)

Q: Can I substitute 031-70013 for 112954 in my existing design?

A: Yes. The 031-70013 maintains identical electrical and mechanical specifications: 75 ohm impedance, BNC plug male pin configuration, crimp termination, bayonet lock fastening, 4 GHz maximum frequency, and 500 V voltage rating. The 031-70013 carries Active product status, making it suitable for new designs and ongoing production.

Q: What is the difference between 031-70013 and 031-80107?

A: Both parts are electrically equivalent with 75 ohm impedance and 4 GHz frequency capability. The primary differences are: 031-80107 uses Phosphor Bronze body material versus Brass in 031-70013, and 031-80107 includes five component pieces (connector, contact, ferrule, insulator, sleeve) while 031-70013 includes four pieces (connector, contact, ferrule, insulator). Both have Active product status and identical operating temperature ranges.

Q: Why is 031-242-RFX listed as a substitute if it has different impedance?

A: The 031-242-RFX is listed in the original substitute documentation for the 112954, but it is not a direct functional equivalent. This part has 50 ohm impedance versus the 75 ohm specification of the main part. Selection of 031-242-RFX requires confirmation that the application can operate at 50 ohm impedance.

Q: What is the significance of packaging format (Bag versus Bulk)?

A: Packaging format does not affect electrical or mechanical performance. Bag packaging typically indicates smaller quantity units, while Bulk packaging indicates larger quantity units. Selection between Bag and Bulk packaging depends on procurement requirements and inventory management practices.

Q: Can I use 31-71013 in a 4 GHz application?

A: No. The 31-71013 has a maximum frequency rating of 2 GHz, which is below the 4 GHz capability of the main part 112954. Use of 31-71013 is limited to applications with frequency requirements not exceeding 2 GHz.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the compliance status of the main part 112954.

Q: What is the difference between PTFE and POM Acetal dielectric materials?

A: Both materials are used in the listed substitute parts. PTFE (Polytetrafluoroethylene) is used in 031-70013 and 031-80107. POM Acetal (Polyoxymethylene) is used in 112133 and 112139. Both materials are suitable for RF coaxial connector applications. Material selection does not affect the primary electrical specifications of impedance, frequency, or voltage rating.

Q: Should I use 112139 as a substitute?

A: No. The 112139 carries "Not For New Designs" product status, identical to the main part 112954. For new designs, select from parts with Active product status: 031-70013, 031-80107, 112133, or 31-71013 (frequency-limited applications only).