RSA-3271 Equivalent & Substitute Parts

Part Overview

The RSA-3271 is an SMA Connector Jack, Female Socket rated at 50 Ohms for panel mount applications with solder cup termination. Manufactured by RF Industries, this coaxial connector operates at frequencies up to 12.4 GHz and is ROHS3 compliant with MSL 1 rating. The part is currently active in production with 725 pieces in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and connector topology align with the original component, enabling direct replacement in panel mount RF applications.

Substiute Parts

RSA-3271

RF IndustriesIn Stock: 806RSA-3271 Datasheet

Current PartRFQ

901-9215

Amphenol RFIn Stock: 909901-9215 Datasheet

DirectRFQ

901-9887-RFX

Amphenol RFIn Stock: 5745901-9887-RFX Datasheet

DirectRFQ

901-9892-RFX

Amphenol RFIn Stock: 989901-9892-RFX Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RSA-3271 are qualified based on the following critical parameters that determine functional equivalence:

Electrical Compatibility:

• Impedance: 50 Ohms (all substitutes match)
• Connector Style: SMA (all substitutes match)
• Frequency capability: Minimum 12.4 GHz (all substitutes rated to 18 GHz, exceeding requirement)

Mechanical Compatibility:

• Connector Type: Female Socket configuration (all substitutes match)
• Mounting Type: Panel Mount with Flange (all substitutes match)
• Fastening Type: Threaded (all substitutes match)
• Number of Ports: 1 (all substitutes match)

Termination Compatibility:

• Contact Termination: Solder Cup (901-9215 and 901-9892-RFX match; 901-9887-RFX uses Solder termination)
• Shield Termination: Solder (all substitutes match)

Material and Environmental Compliance:

• Center Contact Material: Beryllium Copper (all substitutes match)
• Dielectric Material: PTFE (all substitutes match)
• RoHS Status: ROHS3 Compliant (all substitutes match)
• MSL Rating: 1 (Unlimited) (all substitutes match)

All three substitute parts maintain core electrical and mechanical specifications required for direct replacement in 50 Ohm SMA panel mount applications. Differences in body material, body finish, and mating cycle ratings are secondary parameters that do not prevent substitution.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are active production components with ROHS3 compliance and MSL 1 rating, matching the environmental and regulatory status of the RSA-3271.

901-9215 (Amphenol RF): This part provides direct electrical and mechanical equivalence with solder cup termination matching the original specification. The stainless steel body with gold finish offers enhanced corrosion resistance compared to the nickel-finished brass body of the RSA-3271. Frequency capability extends to 18 GHz, exceeding the 12.4 GHz requirement. Mating cycle rating of 100 cycles is suitable for applications with moderate connector engagement frequency.

901-9887-RFX (Amphenol RF): This part maintains brass body construction with nickel finish identical to the RSA-3271, ensuring material consistency. The contact termination differs from the original specification, using solder termination rather than solder cup. Extended insulation feature is included. Mating cycle rating of 500 cycles supports applications requiring higher connector engagement frequency. Frequency capability extends to 18 GHz.

901-9892-RFX (Amphenol RF): This part provides the closest material and termination match to the RSA-3271, with brass body, nickel finish, and solder cup contact termination. Mating cycle rating of 500 cycles supports high-frequency engagement applications. Frequency capability extends to 18 GHz, exceeding the original specification.

Selection between substitutes depends on application requirements for body material, termination type, and expected mating cycle frequency. All three parts maintain the core 50 Ohm SMA panel mount configuration required for direct replacement.

Frequently Asked Questions (FAQ)

Q: Can the 901-9215 substitute for the RSA-3271 in all applications?

A: The 901-9215 provides electrical and mechanical equivalence with matching solder cup termination and 50 Ohm impedance. The stainless steel body with gold finish differs from the original brass/nickel construction but does not prevent functional substitution in standard panel mount RF applications. Frequency capability of 18 GHz exceeds the 12.4 GHz requirement.

Q: What is the difference between solder cup and solder termination?

A: Solder cup termination features a cup-shaped contact area designed to accept cable stripping and solder connection. Solder termination uses a flat or recessed contact surface for direct solder attachment. Both termination types are compatible with standard RF assembly processes. The 901-9887-RFX uses solder termination while the RSA-3271, 901-9215, and 901-9892-RFX use solder cup termination.

Q: Are all substitute parts available in the same packaging?

A: The RSA-3271 is supplied in standard packaging. All three substitute parts are supplied in bulk packaging. Packaging format does not affect electrical or mechanical compatibility for component-level substitution.

Q: Do the substitute parts meet the same environmental compliance standards?

A: All substitute parts are ROHS3 compliant with MSL 1 (Unlimited) rating, matching the environmental compliance status of the RSA-3271. The Amphenol RF parts include REACH Affected status, indicating compliance with REACH regulations.

Q: Which substitute part has the highest mating cycle rating?

A: Both 901-9887-RFX and 901-9892-RFX are rated for 500 mating cycles, compared to 100 cycles for the 901-9215. The higher mating cycle rating indicates greater durability for applications requiring frequent connector engagement and disengagement.

Q: Can the 901-9887-RFX be used as a direct replacement despite the different termination type?

A: The 901-9887-RFX provides electrical and mechanical equivalence with solder termination instead of solder cup termination. Both termination types are compatible with standard RF assembly processes. The extended insulation feature provides additional dielectric protection. This part is functionally equivalent for panel mount 50 Ohm SMA applications.

Q: What is the significance of the extended insulation feature on the 901-9887-RFX?

A: Extended insulation on the 901-9887-RFX provides additional dielectric material coverage on the connector body, offering enhanced electrical isolation and protection in high-voltage or sensitive RF environments. This feature does not prevent substitution but may provide additional performance benefits in specific applications.

Q: Are all substitute parts rated for the same frequency range?

A: The RSA-3271 is rated to 12.4 GHz maximum frequency. All three substitute parts are rated to 18 GHz, providing higher frequency capability. This enhanced frequency rating does not prevent substitution and supports applications requiring operation at frequencies up to 18 GHz.