Amphenol RF 031-5849-RFX TNC Coaxial Connector Equivalent & Substitute Parts

Part Overview

The Amphenol RF 031-5849-RFX is a TNC connector plug with male pin configuration, designed for 50-ohm coaxial cable applications. This right-angle solder connector operates at frequencies up to 11 GHz and is compatible with RG-58 series cables and equivalent cable types. The part carries a "Not For New Designs" product status, which necessitates identification of active equivalent alternatives for ongoing production and new design implementations. Substitute parts maintain identical electrical and mechanical specifications while offering current product status and availability.

Substiute Parts

031-5849-RFX

Amphenol RFIn Stock: 1305031-5849-RFX Datasheet

Current PartRFQ

122140

Amphenol RFIn Stock: 1328122140 Datasheet

DirectRFQ

031-6157

Amphenol RFIn Stock: 767031-6157 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 031-5849-RFX are identified based on strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Connector style (TNC)
• Connector type (Plug, Male Pin)
• Impedance (50 Ohms)
• Frequency maximum rating (11 GHz)
• Voltage rating (500 V)
• Contact termination method (Solder)
• Shield termination method (Crimp)

Mechanical Equivalence Criteria:

• Mounting type (Free Hanging, Right Angle)
• Fastening type (Threaded)
• Cable group compatibility (RG-58 series and equivalents)
• Mating cycle rating (500)

Compliance Equivalence Criteria:

• RoHS3 compliance
• REACH affected status
• ECCN classification (EAR99)

Substitute parts 122140 and 031-6157 maintain full equivalence across all electrical and mechanical parameters. Differences in product status, packaging format, and dielectric material do not affect functional interchangeability within the specified parameter set.

Parameter Comparison

Engineering Selection Recommendations

For New Design Implementation: Part 122140 is the primary recommended substitute for the 031-5849-RFX. This part maintains active product status and carries identical electrical and mechanical specifications. The packaging format difference (Bag versus Bulk) does not affect functional performance and accommodates various procurement workflows.

For Existing Production Continuity: Part 031-6157 serves as an alternative substitute with active product status. This part maintains full electrical and mechanical equivalence across all critical parameters. The dielectric material composition differs (PTFE versus POM Acetal) and the operating temperature range extends to -65°C ~ 165°C, providing enhanced thermal performance for applications requiring extended temperature operation.

Compliance Considerations: All three parts maintain ROHS3 compliance and REACH affected status. Both substitute parts carry EAR99 ECCN classification, consistent with the main part. Selection between 122140 and 031-6157 depends on specific application requirements regarding dielectric material properties and thermal performance rather than compliance or electrical characteristics.

Frequently Asked Questions (FAQ)

Q: Can 122140 and 031-6157 be used interchangeably with 031-5849-RFX?

A: Both parts are functionally equivalent for applications within the specified electrical and mechanical parameters. The 031-5849-RFX carries "Not For New Designs" status, making 122140 and 031-6157 appropriate alternatives for new implementations and ongoing production.

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

A: The 031-5849-RFX and 122140 use Polyoxymethylene (POM) Acetal dielectric material. The 031-6157 uses Polytetrafluoroethylene (PTFE) dielectric material. Both materials meet the specified electrical performance at 11 GHz and 50-ohm impedance. The PTFE variant in 031-6157 provides extended operating temperature range (-65°C ~ 165°C) compared to the POM variant (-40°C ~ 85°C).

Q: Does packaging format affect connector performance?

A: Packaging format (Bulk versus Bag) does not affect electrical or mechanical performance. The choice between 122140 (Bag packaging) and 031-6157 (Bulk packaging) depends on procurement and inventory management requirements rather than functional characteristics.

Q: Are all three parts RoHS3 compliant?

A: Yes. The 031-5849-RFX, 122140, and 031-6157 all carry ROHS3 compliance certification and REACH affected status.

Q: What cable types are compatible with these connectors?

A: All three parts support the same cable group: RG-58, 58A, 58B, 58C, 141, 303, LMR-195, Belden B7806A, and 9907.

Q: Is insertion loss specified for all substitute parts?

A: Insertion loss of 0.18 dB is specified for both 031-5849-RFX and 122140. Insertion loss is not specified in the provided data for 031-6157, though this part maintains equivalent electrical performance at the specified frequency and impedance.

Q: What is the maximum frequency rating for these connectors?

A: All three parts are rated for maximum frequency operation at 11 GHz, supporting RF and microwave applications within this frequency range.