Amphenol RF 031-327-RFX BNC Connector Jack Equivalent & Substitute Parts

Part Overview

The Amphenol RF 031-327-RFX is a BNC connector jack designed as a female socket with 50-ohm impedance for free-hanging (in-line) crimp termination applications. This component is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product portfolio. Organizations requiring this connector type for legacy system maintenance, repair, or existing design continuity require access to functionally equivalent alternatives that maintain electrical and mechanical compatibility with the original specification.

Substiute Parts

031-327-RFX

Amphenol RFIn Stock: 973031-327-RFX Datasheet

Current PartRFQ

112144

Amphenol RFIn Stock: 1492112144 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 031-327-RFX is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Parameters:

• Connector style (BNC)
• Connector type (Jack, Female Socket)
• Impedance (50 Ohms)
• Frequency maximum rating (4 GHz)
• Voltage rating (500 V)
• Insertion loss (0.2 dB)

Mechanical Compatibility Parameters:

• Contact termination method (Crimp)
• Shield termination method (Crimp)
• Mounting type (Free Hanging/In-Line)
• Fastening type (Bayonet Lock)
• Mating cycles (500)
• Body material (Brass)
• Body finish (Nickel)
• Center contact material (Phosphor Bronze)
• Center contact plating (Gold)
• Dielectric material (PTFE)

Regulatory Compliance Parameters:

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

The substitute part 112144 maintains full equivalence across all critical electrical, mechanical, and regulatory parameters. The primary distinction between these parts is packaging format (bulk versus bag) and product status classification (not for new designs versus active).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: Amphenol RF 112144

The 112144 is the direct functional equivalent to the 031-327-RFX. Both components are manufactured by Amphenol RF and maintain identical electrical performance, mechanical specifications, and regulatory compliance across all critical parameters. The 112144 is classified as an active product, whereas the 031-327-RFX is designated "Not For New Designs," indicating the 112144 represents the current production standard for this connector type.

Compliance Considerations:

Both parts maintain ROHS3 compliance and REACH affected status, ensuring regulatory alignment for applications subject to environmental and hazardous substance restrictions. The identical ECCN classification (EAR99) and HTSUS code (8536.69.4010) confirm equivalent export control and tariff treatment.

Packaging Distinction:

The 031-327-RFX is supplied in bulk packaging, while the 112144 is supplied in bag packaging. This distinction affects inventory management and handling procedures but does not impact electrical or mechanical performance. Organizations transitioning from the legacy part number should account for packaging format changes in procurement and assembly workflows.

Cable Compatibility:

The 112144 supports an expanded cable group compatibility list that includes RG-58B and LMR-195 in addition to the cable types supported by the 031-327-RFX. This expanded compatibility does not restrict use with the original cable specifications and provides additional application flexibility.

Frequently Asked Questions (FAQ)

Q: Can the 112144 be used as a direct replacement for the 031-327-RFX in existing assemblies?

A: Yes. The 112144 maintains identical electrical performance (50-ohm impedance, 4 GHz frequency rating, 0.2 dB insertion loss) and mechanical specifications (crimp termination, bayonet fastening, free-hanging mounting). All physical dimensions, contact materials, and plating specifications are equivalent. The connector will interface with existing mating components and cable assemblies without modification.

Q: What is the significance of the "Not For New Designs" status on the 031-327-RFX?

A: This designation indicates that Amphenol RF has transitioned this part number to end-of-life status and recommends the 112144 for new product development. Existing designs using the 031-327-RFX remain supported, but new designs should incorporate the 112144 to ensure long-term supply chain continuity and access to current manufacturing processes.

Q: Are there differences in performance between bulk and bag packaging?

A: No. Packaging format (bulk versus bag) affects only handling, storage, and inventory management procedures. The connector performance, electrical characteristics, and mechanical specifications are identical regardless of packaging type. Selection between packaging formats should be based on procurement volume requirements and assembly line handling capabilities.

Q: Does the expanded cable group compatibility of the 112144 affect its use with original cable specifications?

A: No. The 112144 supports all cable types compatible with the 031-327-RFX (RG-58, 58A, 58C, 141, 303, Belden 9907, B7806A) plus additional types (RG-58B, LMR-195). This expanded compatibility provides additional application flexibility without restricting use with the original cable specifications.

Q: Are regulatory certifications identical between the two parts?

A: Yes. Both the 031-327-RFX and 112144 maintain ROHS3 compliance, REACH affected status, EAR99 ECCN classification, and identical HTSUS tariff codes. No regulatory re-qualification is required when transitioning between these part numbers.

Q: What is the mating cycle rating, and does it affect component selection?

A: Both connectors are rated for 500 mating cycles, indicating the number of times the connector can be mated and unmated while maintaining electrical and mechanical specifications. This rating is identical for both parts and is suitable for applications requiring periodic connection and disconnection. Applications exceeding this cycle count require evaluation of alternative connector designs.

Q: Can the 112144 be used in applications originally specified for the 031-327-RFX without design modification?

A: Yes. The 112144 is a direct functional equivalent with identical electrical performance, mechanical specifications, and regulatory compliance. No design modifications, re-testing, or re-qualification are required. The connector can be substituted in existing bill-of-materials entries and assembly procedures without additional engineering review.