TE Connectivity AMP Connectors 331182 BNC Plug Coaxial Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 331182 is a BNC connector plug with male pin configuration, 50 ohm impedance, and right angle free hanging (in-line) mounting. This connector features push-on contact termination and crimp shield termination, designed for use with RG-55, 55A, 55B, 142, 142A, 142B, and 223 cable groups. The product is classified as obsolete, necessitating identification of active equivalent components for new designs and ongoing system maintenance where original stock is unavailable.

Substiute Parts

331182

TE Connectivity AMP ConnectorsIn Stock: 1239331182 Datasheet

Current PartRFQ

031-334

Amphenol RFIn Stock: 1066031-334 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 331182 with the Amphenol RF 031-334 is based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Connector style: BNC
• Connector type: Plug, Male Pin
• Impedance: 50 Ohms
• Mounting type: Free Hanging (In-Line), Right Angle
• Fastening type: Bayonet Lock
• Voltage rating: 500 V
• Mating cycles: 500
• Center contact material: Brass
• Body material: Brass
• Dielectric material: Polytetrafluoroethylene (PTFE)
• Center contact plating: Gold
• Shield termination: Crimp
• Number of ports: 1

Functional Compatibility: Both connectors support bayonet lock fastening, identical impedance specification, and compatible cable groups (RG-55, 142, 223 are common to both). The substitute part accommodates the primary cable groups specified for the original component.

Differences in Specification: The Amphenol RF 031-334 provides enhanced performance characteristics including higher maximum frequency (4 GHz versus 2.5 GHz), extended operating temperature range (-65°C ~ 165°C versus -55°C ~ 85°C), and improved insertion loss specification (0.2 dB). Contact termination differs: the original uses push-on termination while the substitute offers crimp or solder options. Body finish differs: nickel on the substitute versus silver on the original.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The TE Connectivity 331182 is classified as obsolete. The Amphenol RF 031-334 is an active product with current manufacturing support and availability. For new designs and systems requiring long-term component sourcing, the active substitute is the appropriate selection.

Regulatory Compliance: The Amphenol RF 031-334 is ROHS3 compliant and REACH affected, meeting current regulatory requirements for electronic components in most jurisdictions. The original TE Connectivity 331182 is RoHS non-compliant with undefined REACH status, reflecting its obsolete classification.

Electrical and Mechanical Compatibility: Both connectors meet the core electrical specifications: 50 ohm impedance, 500 V voltage rating, and bayonet lock fastening. Both support identical cable groups (RG-55, 142, 223). The substitute provides enhanced frequency performance (4 GHz versus 2.5 GHz) and extended operating temperature range, making it suitable for applications requiring broader environmental tolerance.

Termination Method Difference: The original component uses push-on contact termination, while the substitute offers crimp or solder options. This difference requires assembly process evaluation. Crimp and solder termination methods are standard industry practices for BNC connectors and provide reliable field termination.

Material and Finish Considerations: Body finish differs (silver versus nickel). Both finishes provide corrosion resistance appropriate for RF connector applications. The nickel finish on the substitute is standard for active production BNC connectors.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol RF 031-334 directly replace the TE Connectivity 331182 in existing assemblies?

A: The connectors share identical mechanical form factor (BNC plug, right angle, free hanging), impedance (50 ohms), and bayonet lock fastening. Direct mechanical mating with existing cable assemblies is compatible. However, the contact termination method differs: the original uses push-on termination while the substitute uses crimp or solder. Existing cable assemblies with push-on terminated contacts require re-termination or replacement with crimp or solder terminated contacts.

Q: What cable types are compatible with both connectors?

A: Both connectors support RG-55, 142, and 223 cable groups. The original 331182 additionally supports 55A, 55B, 142A, 142B variants. The substitute 031-334 additionally supports RG-400. For applications using RG-55, 142, or 223 cables, both connectors are compatible.

Q: Does the higher frequency rating of the substitute affect compatibility?

A: The Amphenol RF 031-334 specifies 4 GHz maximum frequency compared to 2.5 GHz for the original. Higher frequency capability does not reduce compatibility; it extends the operational envelope. Applications operating at or below 2.5 GHz experience no adverse effects from the substitute's higher frequency rating.

Q: Are there packaging differences between the two connectors?

A: The original TE Connectivity 331182 includes 4 pieces per connector package (1 connector, 1 contact, 1 ferrule, 1 gasket). The Amphenol RF 031-334 includes 3 pieces per connector package (1 connector, 1 contact, 1 ferrule). The gasket is not included with the substitute. Assembly procedures should account for this difference.

Q: What is the impact of the body finish difference?

A: The original features silver finish while the substitute features nickel finish. Both finishes provide corrosion resistance suitable for RF connector applications. Nickel finish is standard for current production BNC connectors. The finish difference does not affect electrical performance or mechanical compatibility.

Q: How does the extended operating temperature range of the substitute affect selection?

A: The Amphenol RF 031-334 operates from -65°C to 165°C compared to -55°C to 85°C for the original. The substitute accommodates broader environmental conditions. Applications operating within the original temperature range experience no compatibility issues with the substitute.

Q: What termination method should be selected for the substitute connector?

A: The Amphenol RF 031-334 offers crimp or solder contact termination options. Crimp termination is the standard method for field assembly of BNC connectors and provides reliable, repeatable connections. Solder termination is an alternative for applications requiring soldered connections. Selection depends on assembly process requirements and equipment availability.