Amphenol RF 901-171 Coaxial Connector Adapter: Equivalent & Substitute Parts

Part Overview

The Amphenol RF 901-171 is an active coaxial connector adapter designed to convert between SMA Jack (Female Socket) and TNC Jack (Female Socket) configurations. This adapter operates at 50 Ohms impedance and supports frequencies up to 11 GHz, making it suitable for RF and microwave applications requiring series conversion between connector types. The part is actively manufactured and maintained in production status. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to inventory constraints, supply chain considerations, or application-specific packaging requirements.

Key Parameters

Parameter	Specification
Adapter Type	Jack to Jack
Conversion Type	Between Series (SMA to TNC)
Center Gender	Female to Female
Impedance	50 Ohms
Style	Straight
Mounting Type	Free Hanging (In-Line)
Fastening Type	Threaded, Threaded
Operating Temperature Range	-65°C to 165°C
Center Contact Plating	Gold
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the Amphenol RF 901-171 are identified based on strict equivalence across the following critical parameters:

Adapter Configuration: Jack to Jack topology with Female to Female center gender
Series Conversion: SMA to TNC conversion capability
Electrical Impedance: 50 Ohms characteristic impedance
Mechanical Interface: Straight style, free-hanging in-line mounting with threaded fastening
Operating Environment: Temperature range -65°C to 165°C
Contact Material & Plating: Gold-plated center contacts
Regulatory Compliance: ROHS3 compliance and EAR99 classification

The Pomona Electronics 4295 meets all these criteria and qualifies as a direct substitute. Both parts maintain identical functional specifications for SMA-to-TNC jack-to-jack conversion in 50-Ohm RF applications.

Parameter Comparison

Parameter	Amphenol RF 901-171	Pomona Electronics 4295	Compatibility
Adapter Type	Jack to Jack	Jack to Jack	Equivalent
Conversion Type	Between Series (SMA to TNC)	Between Series (SMA to TNC)	Equivalent
Center Gender	Female to Female	Female to Female	Equivalent
Impedance	50 Ohms	50 Ohms	Equivalent
Style	Straight	Straight	Equivalent
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Equivalent
Fastening Type	Threaded, Threaded	Threaded, Threaded	Equivalent
Frequency - Max	11 GHz	12.4 GHz	Pomona exceeds specification
Operating Temperature	-65°C to 165°C	-65°C to 165°C	Equivalent
Center Contact Plating	Gold	Gold	Equivalent
Center Contact Material	Beryllium Copper	Beryllium Copper	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
ECCN Classification	EAR99	EAR99	Equivalent
HTSUS Code	8536.69.4010	8536.69.4010	Equivalent

Engineering Selection Recommendations

Both the Amphenol RF 901-171 and Pomona Electronics 4295 are active production parts with ROHS3 compliance and EAR99 export classification. Selection between these parts is determined by application requirements and availability:

Amphenol RF 901-171 is selected when:

Amphenol RF brand specification is required
Frequency operation up to 11 GHz is sufficient
Moisture Sensitivity Level 1 (Unlimited) is acceptable
REACH Affected status is compatible with supply chain requirements

Pomona Electronics 4295 is selected when:

Extended frequency capability to 12.4 GHz is required
Bulk packaging format is preferred
REACH Unaffected status is required for supply chain compliance
Beryllium Copper body material with gold finish is specified

Both adapters maintain identical electrical performance for SMA-to-TNC jack-to-jack conversion at 50 Ohms impedance across the full operating temperature range of -65°C to 165°C.

Frequently Asked Questions (FAQ)

Q: Can the Pomona Electronics 4295 replace the Amphenol RF 901-171 in existing designs?

A: Yes. Both parts are jack-to-jack SMA-to-TNC adapters with identical center gender (Female to Female), impedance (50 Ohms), mounting style (straight, free-hanging in-line), and operating temperature range (-65°C to 165°C). The Pomona part exceeds the frequency specification at 12.4 GHz versus 11 GHz.

Q: What is the difference in packaging between these two parts?

A: The Amphenol RF 901-171 is supplied in standard packaging, while the Pomona Electronics 4295 is supplied in bulk packaging format. Packaging selection depends on order quantity and inventory management requirements.

Q: Are both parts compliant with RoHS3 regulations?

A: Yes. Both the Amphenol RF 901-171 and Pomona Electronics 4295 are ROHS3 compliant. However, the Amphenol part is REACH Affected while the Pomona part is REACH Unaffected. Verify REACH compliance requirements for your specific supply chain and end-use application.

Q: What is the maximum frequency rating for each adapter?

A: The Amphenol RF 901-171 operates to 11 GHz maximum frequency. The Pomona Electronics 4295 operates to 12.4 GHz maximum frequency. Both parts are suitable for applications within their respective frequency ranges.

Q: Are the center contact materials identical?

A: Yes. Both adapters use Beryllium Copper center contacts with gold plating, ensuring consistent electrical performance and contact reliability across both parts.

Q: What fastening method is used on both adapters?

A: Both adapters use threaded fastening on both the SMA and TNC ends, providing secure mechanical connection in free-hanging in-line configurations.

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