Amphenol RF 901-9211-SF SMA Coaxial Connector Equivalent & Substitute Parts

Part Overview

The Amphenol RF 901-9211-SF is an SMA connector receptacle designed for RF applications requiring 50-ohm impedance coaxial connections. This female socket connector features a panel mount configuration with solder cup termination, suitable for frequencies up to 18 GHz. The part is currently active in production with 796 units in stock. Alternative equivalent parts may be required due to inventory constraints, supply chain considerations, or specific application requirements related to body material composition or operating temperature ranges.

Substiute Parts

901-9211-SF

Amphenol RFIn Stock: 822901-9211-SF Datasheet

Current PartRFQ

901-9890-RFX

Amphenol RFIn Stock: 1220901-9890-RFX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 901-9890-RFX is classified as a parametric equivalent to the 901-9211-SF based on the following critical parameters that determine substitution eligibility:

Core Matching Parameters:

• Connector Style: SMA (identical)
• Connector Type: Receptacle, Female Socket (identical)
• Impedance: 50 Ohms (identical)
• Contact Termination: Solder Cup (identical)
• Mounting Type: Panel Mount with Bulkhead - Front Side Nut (identical)
• Fastening Type: Threaded (identical)
• Frequency - Max: 18 GHz (identical)
• Number of Ports: 1 (identical)
• Center Contact Material: Beryllium Copper (identical)
• Center Contact Plating: Gold (identical)
• Dielectric Material: PTFE (identical)
• Mating Cycles: 500 (identical)
• Includes: 3 pcs - 1 Connector, 1 Lockwasher, 1 Nut (identical)
• RoHS Status: ROHS3 Compliant (identical)
• MSL: 1 (Unlimited) (identical)

Variations in Non-Critical Parameters:

• Body Material: Stainless Steel (901-9211-SF) vs. Brass (901-9890-RFX)
• Body Finish: Not specified (901-9211-SF) vs. Nickel (901-9890-RFX)
• Operating Temperature Range: -55°C ~ 165°C (901-9211-SF) vs. -65°C ~ 165°C (901-9890-RFX)
• Housing Color: Silver (both, maintained)

These variations do not affect the electrical performance or RF characteristics of the connector within standard application parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the 901-9211-SF and 901-9890-RFX are active production parts with ROHS3 compliance and REACH compliance status. Selection between these parts should be based on the following criteria:

Select 901-9211-SF when:

• Stainless steel body material is specified in design requirements
• Operating temperature range of -55°C to 165°C meets application needs
• Inventory availability of 796 units supports project timeline

Select 901-9890-RFX when:

• Extended low-temperature operation down to -65°C is required
• Brass body material with nickel finish is acceptable for the application
• Higher inventory availability of 1148 units is advantageous
• Nickel-plated finish provides specific environmental or corrosion resistance benefits

Both parts maintain identical electrical performance, RF characteristics, impedance, frequency response, and mechanical interface specifications. The choice between them is determined by material composition requirements and operating temperature specifications rather than functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can 901-9890-RFX be used as a direct replacement for 901-9211-SF in all applications?

A: The 901-9890-RFX is electrically and mechanically compatible with 901-9211-SF for RF applications up to 18 GHz with 50-ohm impedance. However, the difference in body material (brass with nickel finish vs. stainless steel) and operating temperature range (-65°C to 165°C vs. -55°C to 165°C) must be evaluated against specific design requirements. If the application does not require stainless steel properties or extended low-temperature operation, substitution is valid.

Q: What is the significance of the body material difference between these parts?

A: The 901-9211-SF uses stainless steel, while the 901-9890-RFX uses brass with nickel plating. Both materials are suitable for RF connector applications. Stainless steel offers superior corrosion resistance in harsh environments, while brass with nickel plating provides cost-effective performance in standard industrial conditions. Material selection depends on environmental exposure and application-specific requirements.

Q: Does the operating temperature range difference affect RF performance?

A: No. Both parts operate across their respective temperature ranges without degradation of RF characteristics. The 901-9890-RFX extends the low-temperature limit to -65°C, providing additional operational margin for applications requiring cryogenic or extreme cold-weather performance. The upper temperature limit of 165°C is identical for both parts.

Q: Are both parts suitable for solder cup termination in PCB assembly?

A: Yes. Both 901-9211-SF and 901-9890-RFX feature solder cup termination and are designed for direct soldering to PCB pads or cable assemblies. The solder cup design and gold plating on center contacts are identical, ensuring equivalent solderability and electrical connection quality.

Q: What is the significance of the included components (connector, lockwasher, nut)?

A: Both parts include identical accessory sets: one connector, one lockwasher, and one nut. These components support panel mount installation with bulkhead configuration. The lockwasher and nut provide mechanical retention and environmental sealing at the panel interface.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical compliance certifications: ROHS3 compliant, REACH affected, EAR99 ECCN classification, and HTSUS code 8536.69.4010. Moisture sensitivity level is 1 (Unlimited) for both parts, indicating no special handling requirements during storage or assembly.

Q: What inventory considerations should influence part selection?

A: The 901-9211-SF has 796 units in stock, while the 901-9890-RFX has 1148 units available. For high-volume production or time-sensitive projects, the higher inventory of 901-9890-RFX may provide supply chain advantages. For applications with specific material requirements, the 901-9211-SF stainless steel construction may be necessary despite lower inventory levels.