Amphenol RF 031-2301-RFX TNC Receptacle Coaxial Connector Equivalent & Substitute Parts

Part Overview

The Amphenol RF 031-2301-RFX is a TNC connector receptacle with female socket configuration, rated for 50 ohms impedance and designed for panel mount solder cup termination. This component operates at frequencies up to 11 GHz with a voltage rating of 500 V and supports 500 mating cycles. The part is classified as Not For New Designs, indicating obsolescence or phase-out status. Identification of equivalent and substitute parts is necessary for design continuity, inventory management, and procurement of functionally compatible alternatives.

Substiute Parts

031-2301-RFX

Amphenol RFIn Stock: 877031-2301-RFX Datasheet

Current PartRFQ

122332

Amphenol RFIn Stock: 1480122332 Datasheet

DirectRFQ

PCB.SMAFST.2H.B.HT

Taoglas LimitedIn Stock: 1535PCB.SMAFST.2H.B.HT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 031-2301-RFX are classified into two categories based on substitution compatibility:

Direct Equivalent (Category 1): Part number 122332 from Amphenol RF maintains identical electrical and mechanical specifications with the main part. Both components feature TNC connector style, receptacle female socket configuration, 50 ohms impedance, solder cup termination, panel mount bulkhead mounting, 11 GHz maximum frequency, 500 V voltage rating, and 500 mating cycles. The primary distinction is packaging format (Bulk versus Bag) and product status (Not For New Designs versus Active). The dielectric material differs (PTFE versus POM Acetal), which does not affect functional compatibility within specified operating parameters.

Similar Substitute (Category 2): Part number PCB.SMAFST.2H.B.HT from Taoglas Limited represents a similar but not directly equivalent substitute. This part shares the following compatible parameters: 50 ohms impedance, female socket configuration, panel mount solder termination, 12.4 GHz maximum frequency (exceeds main part requirement), ROHS3 compliance, and identical HTSUS classification. The connector style differs (SMA versus TNC), which requires mechanical and electrical interface verification. Voltage rating is lower (335 V versus 500 V), and mating cycle data is not provided.

Substitution logic is based strictly on impedance matching, connector type compatibility, termination method, mounting configuration, frequency capability, voltage rating, and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: Part number 122332 (Amphenol RF) is the primary substitute for 031-2301-RFX. Both parts are ROHS3 compliant, share identical electrical specifications (50 ohms, 11 GHz, 500 V, 0.18 dB insertion loss), and maintain equivalent mechanical interfaces. The distinction in product status (Active versus Not For New Designs) makes 122332 the preferred selection for ongoing production and new designs. Packaging format change from Bulk to Bag does not affect functional performance.

For Applications with Frequency Headroom: Part number PCB.SMAFST.2H.B.HT (Taoglas Limited) is suitable only when connector style flexibility exists and voltage requirements do not exceed 335 V. The higher frequency capability (12.4 GHz) provides operational margin above the 11 GHz specification of the main part. This substitute requires mechanical interface redesign due to SMA versus TNC connector style difference. ROHS3 compliance and identical impedance (50 ohms) support regulatory and electrical compatibility.

Compliance Considerations: All three parts maintain ROHS3 compliance and identical HTSUS classification (8536.69.4010), supporting consistent regulatory and tariff treatment. Moisture sensitivity level is uniform (MSL 1 - Unlimited) across all options.

Frequently Asked Questions (FAQ)

Q: Can 122332 be used as a direct drop-in replacement for 031-2301-RFX?

A: Yes. Both parts feature identical TNC connector style, receptacle female socket configuration, 50 ohms impedance, solder cup termination, panel mount bulkhead mounting, 11 GHz maximum frequency, 500 V voltage rating, and 500 mating cycles. Electrical and mechanical interfaces are fully compatible. The change in product status from Not For New Designs to Active makes 122332 the recommended selection.

Q: What is the primary difference between 031-2301-RFX and 122332?

A: The primary differences are packaging format (Bulk versus Bag), product status (Not For New Designs versus Active), and dielectric material (PTFE versus POM Acetal). Electrical performance and mechanical specifications remain identical.

Q: Is PCB.SMAFST.2H.B.HT a suitable replacement for 031-2301-RFX?

A: PCB.SMAFST.2H.B.HT is a similar substitute only when connector style flexibility exists. The SMA connector differs from TNC, requiring mechanical interface redesign. The voltage rating is lower (335 V versus 500 V), which may limit application scope. Frequency capability exceeds the main part requirement (12.4 GHz versus 11 GHz). Mating cycle and insertion loss data are not provided for this part.

Q: What are the critical parameters for substitution compatibility?

A: Critical parameters include connector style (TNC), connector type (receptacle female socket), impedance (50 ohms), termination method (solder cup), mounting configuration (panel mount), frequency capability (minimum 11 GHz), voltage rating (minimum 500 V), and regulatory compliance (ROHS3). Deviations in any of these parameters require engineering evaluation.

Q: Does packaging format affect functional performance?

A: No. Packaging format (Bulk, Bag, or Tray) does not affect electrical or mechanical performance. Selection is based on procurement, inventory management, and handling requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All three parts (031-2301-RFX, 122332, and PCB.SMAFST.2H.B.HT) are ROHS3 compliant, supporting consistent regulatory treatment and environmental standards compliance.

Q: What is the insertion loss specification for all parts?

A: Insertion loss is specified as 0.18 dB for both 031-2301-RFX and 122332. Insertion loss data is not provided for PCB.SMAFST.2H.B.HT.