Amphenol RF 122112 TNC Connector Plug Equivalent & Substitute Parts

Part Overview

The Amphenol RF 122112 is an active TNC connector plug designed for 50-ohm coaxial cable applications. This male pin connector features solder termination for the center contact and crimp termination for the shield, operating at frequencies up to 11 GHz with a 500V rating. The connector is supplied as a free-hanging (in-line) configuration with included contact and ferrule components. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when specific application requirements necessitate alternative connector styles or termination methods.

Substiute Parts

122112

Amphenol RFIn Stock: 1119122112 Datasheet

Current PartRFQ

5285

Pomona ElectronicsIn Stock: 6875285 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute part identification for the Amphenol RF 122112 is based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Impedance: 50 Ohms (mandatory match)
• Connector Type: Plug, Male Pin (mandatory match)
• Mounting Type: Free Hanging (In-Line) (mandatory match)
• Number of Ports: 1 (mandatory match)
• Voltage Rating: 500 V (minimum requirement)
• RoHS Status: ROHS3 Compliant (regulatory requirement)

Secondary Consideration Parameters:

• Connector Style: TNC (primary) vs. BNC (substitute) — different mechanical interface
• Contact Termination: Solder (primary) vs. Crimp or Solder (substitute) — alternative termination method
• Frequency - Max: 11 GHz (primary) vs. 4 GHz (substitute) — reduced frequency capability
• Fastening Type: Threaded (TNC) vs. Bayonet Lock (BNC) — different mating mechanism

The Pomona Electronics 5285 BNC connector plug is identified as a substitute part based on matching impedance, connector type (male plug), mounting configuration, voltage rating, and regulatory compliance. However, the substitute operates at a lower maximum frequency and uses a different connector style with bayonet locking rather than threaded fastening.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The Amphenol RF 122112 TNC connector plug is the specified component for applications requiring 11 GHz maximum frequency operation with threaded mating. This part maintains active product status and full ROHS3 compliance with REACH affected designation.

Substitute Part Selection: The Pomona Electronics 5285 BNC connector plug serves as a substitute option when application frequency requirements do not exceed 4 GHz and bayonet locking is acceptable. Both parts maintain active product status and ROHS3 compliance. The substitute supports both crimp and solder termination methods, providing flexibility in assembly approaches. The BNC connector style uses a bayonet lock mechanism instead of the TNC threaded interface, requiring mechanical interface compatibility verification in the application.

Compliance Considerations: Both parts are ROHS3 compliant and carry EAR99 ECCN classification. The primary part is REACH affected; the substitute is REACH unaffected. Selection should account for supply chain and regulatory requirements specific to the end application.

Frequently Asked Questions (FAQ)

Q: Can the Pomona Electronics 5285 BNC connector directly replace the Amphenol RF 122112 TNC connector?

A: Direct mechanical replacement is not possible. The TNC connector uses threaded fastening while the BNC connector uses bayonet locking. Cable termination points and mating interfaces differ between the two connector styles. Substitution requires mechanical interface redesign in the application.

Q: What is the primary difference in frequency capability between these connectors?

A: The Amphenol RF 122112 TNC connector operates at frequencies up to 11 GHz, while the Pomona Electronics 5285 BNC connector operates at frequencies up to 4 GHz. Applications requiring operation above 4 GHz must use the TNC connector.

Q: Are both connectors suitable for 50-ohm impedance applications?

A: Yes. Both the Amphenol RF 122112 and Pomona Electronics 5285 are rated for 50-ohm impedance and are compatible with standard 50-ohm coaxial cable systems.

Q: What termination options are available for each connector?

A: The Amphenol RF 122112 features solder termination for the center contact. The Pomona Electronics 5285 supports both crimp and solder termination methods for the center contact, providing assembly flexibility.

Q: Do both connectors support the same voltage rating?

A: Yes. Both connectors are rated for 500V operation and are suitable for applications within this voltage specification.

Q: What cable types are compatible with each connector?

A: The Amphenol RF 122112 TNC connector is compatible with RG-58 Plenum, 122, Belden 88240, and 89907 cable types. The Pomona Electronics 5285 BNC connector is compatible with RG-58, 58A, 58C, 141, and 141A cable types. Cable compatibility must be verified for specific application requirements.

Q: Are both parts available in active product status?

A: Yes. Both the Amphenol RF 122112 and Pomona Electronics 5285 maintain active product status with current inventory availability.

Q: What is the packaging difference between these parts?

A: The Amphenol RF 122112 is supplied in bag packaging, while the Pomona Electronics 5285 is supplied in bulk packaging. Packaging selection may affect inventory management and component handling procedures.