Amphenol RF 031-8280-2 TNC Connector Plug Equivalent & Substitute Parts

Part Overview

The Amphenol RF 031-8280-2 is a TNC Connector Plug with male pin configuration, designed for coaxial RF applications requiring 50 Ohm impedance. This connector operates at frequencies up to 4 GHz and features a threaded fastening mechanism for secure mating. The part is currently in stock with 866 pieces available as new original inventory.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained, including connector style, impedance rating, mounting type, and contact termination compatibility. Alternative sources become necessary for supply chain continuity, design flexibility, or specific application requirements.

Substiute Parts

031-8280-2

Amphenol RFIn Stock: 882031-8280-2 Datasheet

Current PartRFQ

PL40-1

Cinch Connectivity Solutions TrompeterIn Stock: 961PL40-1 Datasheet

DirectRFQ

225555-6

TE Connectivity AMP ConnectorsIn Stock: 872225555-6 Datasheet

SimilarRFQ

5225555-2

TE Connectivity AMP ConnectorsIn Stock: 9985225555-2 Datasheet

SimilarRFQ

5225555-5

TE Connectivity AMP ConnectorsIn Stock: 12625225555-5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 031-8280-2 are classified based on strict electrical and mechanical compatibility criteria. All identified substitutes maintain the following core parameters:

Mandatory Equivalence Parameters:

• Connector Style: TNC
• Connector Type: Plug, Male Pin
• Impedance: 50 Ohms
• Mounting Type: Free Hanging (In-Line)
• Fastening Type: Threaded
• Number of Ports: 1
• Body Material: Brass
• Body Finish: Nickel
• Center Contact Plating: Gold
• Housing Color: Silver

Variable Parameters (Allowed Differences):

• Contact Termination: Solder or Crimp
• Shield Termination: Wrench Clamp or Crimp
• Cable Group: RG-58, RG-58A, RG-58C, RG-141, RG-141A, RG-142, RG-142A, RG-142B
• Frequency - Max: 4 GHz to 11 GHz
• Product Status: Active or Obsolete
• RoHS Compliance: Compliant or Non-compliant
• Operating Temperature: -65°C ~ 165°C (where specified)
• Voltage Rating: 500 V (where specified)
• Mating Cycles: 500 (where specified)

Four substitute part numbers are identified: PL40-1, 225555-6, 5225555-2, and 5225555-5.

Parameter Comparison

Engineering Selection Recommendations

PL40-1 (Cinch Connectivity Solutions Trompeter): This substitute maintains frequency parity at 4 GHz with the original 031-8280-2. The solder contact termination differs from unspecified termination on the main part. PL40-1 holds Active product status and ROHS3 compliance, supporting current design standards. Cable group compatibility includes RG-58.

225555-6 (TE Connectivity AMP Connectors): This substitute provides extended frequency capability to 11 GHz with crimp contact termination. Operating temperature range of -65°C to 165°C and 500 V voltage rating are specified. Product status is Active; however, RoHS non-compliance status must be evaluated against application requirements. Cable group compatibility includes RG-142, 142A, 142B.

5225555-2 (TE Connectivity AMP Connectors): This substitute offers crimp contact termination with 11 GHz frequency capability. Product status is Obsolete, indicating discontinued manufacturing. RoHS Compliant status supports regulatory requirements. Operating temperature -65°C to 165°C and 500 V voltage rating are specified. Cable group compatibility includes RG-58A, 58C. Obsolete status requires supply chain verification.

5225555-5 (TE Connectivity AMP Connectors): This substitute provides 11 GHz frequency capability with crimp contact termination. Product status is Active with ROHS3 compliance, supporting current procurement standards. Operating temperature -65°C to 165°C and 500 V voltage rating are specified. Cable group compatibility includes RG-141, 141A. Highest inventory availability at 1172 pieces.

Frequently Asked Questions (FAQ)

Q: Can PL40-1 be used as a direct replacement for 031-8280-2?

A: PL40-1 maintains equivalent electrical and mechanical parameters including TNC connector style, 50 Ohm impedance, 4 GHz frequency rating, and threaded fastening. The solder contact termination differs from the unspecified termination of the original part. Compatibility depends on cable assembly requirements and termination method compatibility in the application.

Q: What is the difference between solder and crimp termination options?

A: PL40-1 uses solder termination with wrench clamp shield termination. The TE Connectivity substitutes (225555-6, 5225555-2, 5225555-5) use crimp termination with crimp shield termination. Termination method selection depends on cable assembly equipment, assembly process, and application reliability requirements.

Q: Why do some substitutes have 11 GHz frequency rating while the original is 4 GHz?

A: The TE Connectivity substitutes (225555-6, 5225555-2, 5225555-5) are rated to 11 GHz, exceeding the 4 GHz specification of the 031-8280-2. Higher frequency rating indicates broader application capability. For applications operating at 4 GHz or below, 11 GHz-rated connectors are electrically compatible and provide design margin.

Q: What does Obsolete product status mean for 5225555-2?

A: Obsolete status indicates the manufacturer has discontinued production of 5225555-2. While 984 pieces are currently in stock, future procurement may not be available. Active status parts (PL40-1, 225555-6, 5225555-5) are recommended for new designs requiring long-term supply assurance.

Q: Are all substitutes RoHS compliant?

A: PL40-1 is ROHS3 Compliant. 225555-6 is RoHS non-compliant. 5225555-2 is RoHS Compliant. 5225555-5 is ROHS3 Compliant. RoHS compliance requirements vary by application and regulatory jurisdiction. Verify compliance status against specific application requirements.

Q: Which substitute has the best availability?

A: 5225555-5 has the highest inventory at 1172 pieces. This part is Active status with ROHS3 compliance and 11 GHz frequency capability, supporting both current supply needs and future design requirements.

Q: Can I use a substitute with a different cable group?

A: Cable group compatibility depends on connector pin and socket dimensions, which are maintained across all substitutes. However, cable group designation indicates the coaxial cable type for which the connector is optimized. Verify cable impedance matching and mechanical fit for the specific cable assembly in use.