Amphenol RF 031-350 BNC Connector Plug Equivalent & Substitute Parts

Part Overview

The Amphenol RF 031-350 is a BNC connector plug designed for 50-ohm coaxial cable applications. This male pin connector features crimp termination for both center contact and shield, with free-hanging (in-line) mounting configuration. The part is currently active in production with 934 units in stock inventory.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct functional replacement in RF coaxial connector applications. Substitution becomes necessary when the primary part reaches end-of-life status, inventory constraints occur, or alternative sourcing is required for supply chain continuity.

Substiute Parts

031-350

Amphenol RFIn Stock: 1006031-350 Datasheet

Current PartRFQ

031-4326

Amphenol RFIn Stock: 950031-4326 Datasheet

Parametric EquivalentRFQ

5225395-3

TE Connectivity AMP ConnectorsIn Stock: 9265225395-3 Datasheet

SimilarRFQ

5227079-6

TE Connectivity AMP ConnectorsIn Stock: 646275227079-6 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Amphenol RF 031-350 are classified based on alignment with critical electrical and mechanical parameters. The substitution logic follows these key criteria:

Primary Substitution Criteria:

• Connector style (BNC)
• Connector type (Plug, Male Pin)
• Impedance (50 Ohms)
• Contact and shield termination method (Crimp)
• Mounting type (Free Hanging/In-Line)
• Fastening type (Bayonet Lock)
• Maximum frequency (4 GHz)
• Voltage rating (500 V)
• Mating cycles (500)

Secondary Compatibility Factors:

• Cable group compatibility
• Operating temperature range
• Insertion loss performance
• Dielectric material composition
• RoHS and regulatory compliance status

Parts are grouped as parametric equivalents when all primary criteria match exactly. Parts are grouped as similar alternatives when primary criteria align but secondary factors such as operating temperature range, dielectric material, or body finish differ. Product status (Active, Obsolete) is noted to inform selection decisions based on long-term availability.

Parameter Comparison

Engineering Selection Recommendations

Amphenol RF 031-4326 (Parametric Equivalent)

The 031-4326 is a parametric equivalent to the 031-350, sharing identical electrical specifications and operating temperature range (-65°C ~ 165°C). Both parts are manufactured by Amphenol RF and maintain active product status. The 031-4326 is ROHS3 compliant and carries equivalent regulatory certifications. The primary difference is packaging configuration (Bulk versus standard) and body finish (Silver versus Nickel). This part is suitable for direct substitution in applications requiring the full operating temperature range of the primary part.

TE Connectivity 5227079-6 (Active Alternative)

The 5227079-6 is an active product from TE Connectivity AMP Connectors with full electrical parameter alignment to the 031-350. This part maintains 50-ohm impedance, 4 GHz maximum frequency, 500 V voltage rating, and 0.2 dB insertion loss. The operating temperature range is restricted to -55°C ~ 85°C compared to the 031-350's -65°C ~ 165°C specification. The dielectric material differs (Polyethylene versus PTFE). This part is RoHS compliant and carries high inventory availability (64,520 units). Selection of this part is appropriate for applications operating within the -55°C ~ 85°C temperature window.

TE Connectivity 5225395-3 (Obsolete Status)

The 5225395-3 carries obsolete product status and is not recommended for new designs or long-term production applications. While electrical parameters align with the primary part, the obsolete designation indicates discontinued manufacturing and limited future availability. This part may be considered only for legacy system maintenance or repair applications where compatibility with existing installed base is required.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol RF 031-4326 replace the 031-350 in all applications?

A: Yes, the 031-4326 is a parametric equivalent with identical electrical specifications and operating temperature range. The body finish difference (Silver versus Nickel) does not affect electrical performance. Packaging configuration differs (Bulk versus standard), which may affect procurement and handling procedures but not functional compatibility.

Q: What is the primary limitation of the TE Connectivity 5227079-6 as a substitute?

A: The 5227079-6 operates within a restricted temperature range of -55°C ~ 85°C, compared to the 031-350's -65°C ~ 165°C specification. Applications requiring operation below -55°C or above 85°C must use the 031-350 or 031-4326. The dielectric material also differs (Polyethylene versus PTFE), which may affect performance in specific RF applications.

Q: Why is the TE Connectivity 5225395-3 listed if it is obsolete?

A: The 5225395-3 is documented for reference purposes in legacy system identification and maintenance scenarios. Obsolete status indicates that TE Connectivity has discontinued manufacturing. New designs and production applications should not specify this part. Existing inventory may be available through secondary distributors for repair and maintenance of installed systems.

Q: Are all substitute parts RoHS compliant?

A: Yes, all listed substitute parts carry RoHS compliance certifications. The 031-350 and 031-4326 are ROHS3 compliant. The TE Connectivity parts (5225395-3 and 5227079-6) are RoHS compliant. All parts meet current environmental and regulatory requirements for electronic component manufacturing.

Q: What cable groups are compatible with each substitute part?

A: The 031-350 and 031-4326 support cable groups RG-55, 142, 223, and 400. The TE Connectivity parts (5225395-3 and 5227079-6) support cable groups RG-55, 55A, 55B, and 223. Cable group compatibility must be verified against specific application requirements. The 031-350 and 031-4326 offer broader cable compatibility due to support for RG-142 and RG-400 cables.

Q: How do the packaging differences affect component selection?

A: The 031-350 is supplied in standard packaging with 4 included components (1 Connector, 1 Contact, 1 Ferrule, 1 Strain Relief). The 031-4326 is supplied in Bulk packaging with 3 included components (1 Connector, 1 Contact, 1 Ferrule). The TE Connectivity parts include 3 components without strain relief. Packaging differences affect inventory management and assembly procedures but do not impact electrical performance or mechanical compatibility.

Q: What is the significance of the dielectric material difference between PTFE and PE?

A: The 031-350, 031-4326, and 5225395-3 use PTFE (Polytetrafluoroethylene) dielectric material. The 5227079-6 uses PE (Polyethylene) dielectric material. PTFE provides superior high-frequency performance and temperature stability. PE offers lower cost and adequate performance for standard RF applications. Selection between these materials depends on specific application frequency requirements and environmental conditions.

Q: Is the 031-350 suitable for high-temperature applications?

A: Yes, the 031-350 is rated for operating temperatures from -65°C to 165°C, making it suitable for high-temperature applications. The Amphenol RF 031-4326 shares this temperature specification. The TE Connectivity alternatives (5227079-6 and 5225395-3) are limited to -55°C ~ 85°C and are not suitable for applications exceeding 85°C.