Amphenol RF 031-80105 BNC Connector Plug Equivalent & Substitute Parts

Part Overview

The Amphenol RF 031-80105 is a BNC connector plug with male pin configuration, designed for 75 ohm coaxial cable applications. This free-hanging (in-line) crimp connector operates at frequencies up to 4 GHz and is rated for 500 volts with an operating temperature range of -65°C to 165°C. The part is currently active in production with 765 units in stock. Substitute parts are identified for applications requiring alternative impedance specifications or when the primary part becomes unavailable due to inventory constraints or design modifications.

Substiute Parts

031-80105

Amphenol RFIn Stock: 838031-80105 Datasheet

Current PartRFQ

031-325

Amphenol RFIn Stock: 1029031-325 Datasheet

Parametric EquivalentRFQ

1-5413589-0

TE Connectivity AMP ConnectorsIn Stock: 7691-5413589-0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 031-80105 are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Connector Style: BNC (bayonet lock fastening)
• Connector Type: Plug, Male Pin
• Contact Termination: Crimp
• Shield Termination: Crimp
• Mounting Type: Free Hanging (In-Line)
• Fastening Type: Bayonet Lock
• Number of Ports: 1
• Voltage Rating: 500 V
• Mating Cycles: 500

Variable Parameters Allowing Substitution:

• Impedance: 50 Ohms or 75 Ohms (application-dependent)
• Frequency - Max: 2 GHz or 4 GHz (application-dependent)
• Operating Temperature Range: -55°C ~ 85°C or -65°C ~ 165°C (application-dependent)
• Dielectric Material: Polytetrafluoroethylene (PTFE) or Polyethylene (PE)
• Body Material: Phosphor Bronze or Brass
• Product Status: Active or Obsolete (inventory availability consideration)

The 031-80105 has two identified substitutes: the Amphenol RF 031-325 (50 ohm variant) and the TE Connectivity 1-5413589-0 (75 ohm equivalent from alternate manufacturer).

Parameter Comparison

Engineering Selection Recommendations

031-80105 (Primary Selection): The 031-80105 is the recommended primary selection for new designs and applications requiring 75 ohm impedance at frequencies up to 4 GHz. This part maintains active production status with ROHS3 compliance and an extended operating temperature range of -65°C to 165°C. The part is currently in stock with 765 units available.

031-325 (Amphenol RF Substitute): The 031-325 serves as a substitute only for applications requiring 50 ohm impedance. This part shares identical mechanical and electrical characteristics with the 031-80105 except for impedance specification. Both parts are manufactured by Amphenol RF, maintain active production status, and carry ROHS3 compliance. The 031-325 has higher inventory availability at 966 units. Selection of this part requires confirmation that the application system operates at 50 ohm impedance.

1-5413589-0 (TE Connectivity Substitute): The 1-5413589-0 is a 75 ohm equivalent from TE Connectivity AMP Connectors. This part carries obsolete product status and operates within a reduced temperature range of -55°C to 85°C compared to the primary part. The maximum frequency specification is limited to 2 GHz. This substitute is suitable only for legacy system maintenance or applications with temperature and frequency requirements within the specified limits. RoHS compliance status is confirmed, though REACH status is vendor undefined.

Selection Logic:

• For new designs: Use 031-80105
• For 50 ohm systems: Use 031-325
• For legacy system support with temperature/frequency constraints: Use 1-5413589-0

Frequently Asked Questions (FAQ)

Q: Can the 031-325 (50 ohm) be used in place of the 031-80105 (75 ohm)?

A: No. The impedance specification is a critical electrical parameter. The 031-325 is designed for 50 ohm systems, while the 031-80105 is designed for 75 ohm systems. Using a 50 ohm connector in a 75 ohm system creates impedance mismatch, resulting in signal reflections, increased insertion loss, and system performance degradation. Selection must match the system impedance requirement.

Q: What are the mechanical compatibility requirements for BNC connector substitution?

A: All three parts share identical mechanical compatibility: BNC bayonet lock fastening, plug male pin configuration, free-hanging in-line mounting, and crimp termination for both contact and shield. These parts are mechanically interchangeable at the connector interface level. Mechanical compatibility alone does not determine electrical suitability.

Q: Is the 1-5413589-0 suitable for new designs?

A: No. The 1-5413589-0 carries obsolete product status and is not recommended for new designs. This part is suitable only for replacement in existing systems where the original part specification is already established. The reduced operating temperature range (-55°C to 85°C) and lower maximum frequency (2 GHz) further limit its application scope.

Q: What is the difference in operating temperature ranges between the parts?

A: The 031-80105 and 031-325 both operate from -65°C to 165°C. The 1-5413589-0 operates from -55°C to 85°C, representing a narrower temperature envelope. Applications requiring operation below -55°C or above 85°C must use either the 031-80105 or 031-325.

Q: Are all three parts RoHS compliant?

A: Yes. The 031-80105 and 031-325 are ROHS3 compliant. The 1-5413589-0 is RoHS compliant. All three parts meet RoHS requirements, though the specific RoHS version differs between manufacturers.

Q: What is the frequency limitation difference?

A: The 031-80105 and 031-325 both support frequencies up to 4 GHz. The 1-5413589-0 is limited to 2 GHz maximum frequency. Applications requiring operation above 2 GHz must use either the 031-80105 or 031-325.

Q: Can these connectors be used interchangeably with different cable types?

A: All three parts are compatible with AT&T 735, 735A, and Belden 735A1 cable groups. The 1-5413589-0 is compatible with AT&T 735A cable. Cable compatibility is determined by the connector's crimp termination design and ferrule specifications, which are consistent across all three parts for their respective cable groups.

Q: What is the insertion loss specification, and does it vary between parts?

A: The 031-80105 and 031-325 both specify 0.2 dB insertion loss. The 1-5413589-0 specifies 0.15 dB insertion loss. Insertion loss represents signal attenuation through the connector and is application-dependent. The lower insertion loss of the 1-5413589-0 does not offset its other limitations for new designs.

Q: Are there packaging differences between these parts?

A: The 031-80105 and 1-5413589-0 packaging specifications are not provided. The 031-325 is packaged in bulk. Packaging differences do not affect electrical or mechanical performance and are relevant only for procurement and inventory management.