Amphenol RF 031-80102 BNC Connector Plug 75 Ohm Crimp - Equivalent & Substitute Parts

Part Overview

The Amphenol RF 031-80102 is a BNC connector plug with male pin configuration, designed for 75 ohm coaxial cable applications. This component features crimp termination for both center contact and shield, bayonet lock fastening, and operates across a frequency range up to 4 GHz. The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identification of equivalent and substitute parts is necessary for legacy system maintenance, repair operations, and applications where 75 ohm impedance matching is required.

Substiute Parts

031-80102

Amphenol RFIn Stock: 893031-80102 Datasheet

Current PartRFQ

112955

Amphenol RFIn Stock: 1132112955 Datasheet

DirectRFQ

031-325

Amphenol RFIn Stock: 1029031-325 Datasheet

SimilarRFQ

UPL220-009

Cinch Connectivity Solutions TrompeterIn Stock: 1247UPL220-009 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 031-80102 are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalents (Identical Electrical Specifications): Parts that maintain the same impedance (75 ohms), connector style (BNC plug), termination method (crimp), and frequency rating (4 GHz maximum). These parts are interchangeable in applications where the original 031-80102 was specified.

Similar Parts (Different Impedance): Parts that share the same connector style, termination method, and mounting configuration but operate at different impedance levels. These parts are not electrically interchangeable with the 031-80102 and require system impedance compatibility verification.

The critical parameters determining substitution eligibility are: impedance rating, connector style, connector type (plug vs. jack), contact termination method, shield termination method, and frequency rating.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (Electrical Equivalence):

The Amphenol RF 112955 and Cinch Connectivity Solutions Trompeter UPL220-009 are direct electrical equivalents to the 031-80102. Both maintain 75 ohm impedance, identical connector geometry, crimp termination, and 4 GHz frequency rating. The 112955 carries Active product status from Amphenol RF, the original manufacturer, and is ROHS3 compliant and REACH affected. The UPL220-009 is sourced from an alternative manufacturer (Cinch Connectivity Solutions Trompeter) and also maintains Active status with equivalent compliance certifications.

For Similar Applications (Different Impedance):

The Amphenol RF 031-325 is a 50 ohm BNC plug connector with identical mechanical configuration and termination method. This part is not electrically interchangeable with the 031-80102 due to impedance mismatch. Selection of the 031-325 requires system redesign or impedance matching verification and is only appropriate for applications specifically requiring 50 ohm impedance.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and REACH affected status, consistent with the original 031-80102. All parts are rated for 500 V operation and support bayonet lock fastening with crimp termination.

Frequently Asked Questions (FAQ)

Q: Can the 112955 be used as a direct replacement for the 031-80102?

A: Yes. The 112955 maintains identical electrical specifications: 75 ohm impedance, BNC plug configuration, crimp termination for both center contact and shield, 4 GHz maximum frequency, and 500 V voltage rating. Both parts are ROHS3 compliant and REACH affected. The primary difference is packaging (Bag vs. Bulk) and product status (Active vs. Not For New Designs).

Q: What is the difference between the 031-80102 and the UPL220-009?

A: Both parts are 75 ohm BNC plug connectors with crimp termination and 4 GHz frequency rating. The UPL220-009 is manufactured by Cinch Connectivity Solutions Trompeter rather than Amphenol RF. The UPL220-009 includes 2 pieces (connector and contact) versus 3 pieces (connector, contact, and ferrule) in the 031-80102. Both are ROHS3 compliant and REACH affected.

Q: Why is the 031-325 listed as a substitute if it has different impedance?

A: The 031-325 is listed as a similar part, not a direct substitute. It shares the same connector style (BNC), connector type (plug, male pin), termination method (crimp), and mounting configuration (free hanging in-line). However, the 031-325 operates at 50 ohms impedance, making it electrically incompatible with 75 ohm systems. Selection requires verification that the application can accommodate 50 ohm impedance.

Q: What are the cable compatibility differences between these parts?

A: The 031-80102 and 112955 are compatible with RG-122, 180, 180A, 180B, 195, Belden 1855, and 1865A cables. The 031-325 is compatible with AT&T 735, 735A, and Belden 735A1 cables. The UPL220-009 is compatible with Belden 8218, YR23023, and Essex 21-597 cables. Cable selection must match the impedance and connector specifications of the chosen part.

Q: Are there packaging differences between the direct equivalents?

A: Yes. The 031-80102 is supplied in Bulk packaging, the 112955 in Bag packaging, and the UPL220-009 in Bulk packaging. Packaging does not affect electrical or mechanical performance but may impact inventory management and handling procedures.

Q: What is the operating temperature range for these parts?

A: The 031-80102 and 031-325 are rated for -65°C to 165°C operation. The 112955 does not specify an operating temperature range in the provided data. The UPL220-009 is rated for -65°C to 165°C operation. Temperature rating should be verified for applications operating outside standard environmental conditions.