Amphenol RF 901-293 Coaxial Connector Adapter: Equivalent & Substitute Parts

Part Overview

The Amphenol RF 901-293 is an SMA-to-N coaxial connector adapter designed for RF applications requiring impedance matching at 50 Ohms. This adapter converts an SMA plug (male pin) connection to an N jack (female socket) configuration in a straight, free-hanging inline format. The part is currently active in production with 1163 units in stock. Equivalent and substitute parts are identified for applications where alternative sourcing, inventory availability, or specific performance parameters necessitate component substitution.

Substiute Parts

901-293

Amphenol RFIn Stock: 1206901-293 Datasheet

Current PartRFQ

HRM-553S

Hirose Electric Co LtdIn Stock: 824HRM-553S Datasheet

DirectRFQ

4298

Pomona ElectronicsIn Stock: 8464298 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Amphenol RF 901-293 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Adapter Type: Plug to Jack
• Conversion Type: Between Series (SMA to N)
• Center Gender: Female to Male
• Convert From: SMA Plug, Male Pin
• Convert To: N Jack, Female Socket
• Impedance: 50 Ohms
• Style: Straight
• Mounting Type: Free Hanging (In-Line)
• Fastening Type: Threaded, Threaded
• Center Contact Plating: Gold
• Center Contact Material: Beryllium Copper
• Dielectric Material: Polytetrafluoroethylene (PTFE)

Allowable Variation Parameters:

• Frequency Maximum: 11 GHz (main part) to 12.4 GHz (substitute parts) — higher frequency capability is acceptable
• Operating Temperature Range: -65°C ~ 165°C (main part) to -40°C ~ 85°C (substitute part HRM-553S) — narrower range acceptable if application requirements are met
• Body Material: Varies across substitutes
• Mating Cycles: Varies across substitutes
• RoHS/REACH Compliance: Varies across substitutes

The identified substitute parts (HRM-553S and 4298) maintain full electrical and mechanical compatibility with the 901-293 while offering alternative sourcing options.

Parameter Comparison

Engineering Selection Recommendations

Amphenol RF 901-293 is the primary specification part with ROHS3 compliance and REACH affected status. This part supports the full operating temperature range of -65°C ~ 165°C and is suitable for applications requiring extended thermal performance.

Hirose Electric HRM-553S is a direct functional equivalent with identical electrical and mechanical parameters. This part operates within a narrower temperature range (-40°C ~ 85°C) and is suitable for applications within this thermal envelope. The HRM-553S offers higher frequency capability (12.4 GHz) and includes documented mating cycle rating (1000 cycles). RoHS compliance is confirmed. This part is appropriate for standard commercial and industrial RF applications.

Pomona Electronics 4298 is a functional equivalent with identical electrical and mechanical parameters. This part maintains the full operating temperature range (-65°C ~ 165°C) matching the primary part and offers higher frequency capability (12.4 GHz). ROHS3 compliance and REACH unaffected status are confirmed. This part is appropriate for applications requiring extended thermal performance and unrestricted REACH compliance.

Selection between these three parts is based on:

• Thermal operating range requirements
• Frequency performance margin requirements
• Compliance and regulatory status requirements
• Inventory and lead time considerations

Frequently Asked Questions (FAQ)

Q: Can the Hirose HRM-553S replace the Amphenol RF 901-293 in all applications?

A: The HRM-553S is electrically and mechanically equivalent for applications operating within the temperature range of -40°C ~ 85°C. Applications requiring operation below -40°C or above 85°C must use the Amphenol RF 901-293 or Pomona Electronics 4298.

Q: What is the difference between the three adapter parts?

A: All three parts are SMA-to-N coaxial adapters with identical electrical specifications (50 Ohm impedance, gold-plated beryllium copper contacts, PTFE dielectric). The primary differences are operating temperature range, frequency maximum rating, body material composition, and regulatory compliance status.

Q: Are all three parts suitable for high-frequency RF applications?

A: Yes. The Amphenol RF 901-293 operates to 11 GHz. The Hirose HRM-553S and Pomona Electronics 4298 both operate to 12.4 GHz, providing additional frequency margin.

Q: What is the significance of the RoHS and REACH compliance differences?

A: All three parts are RoHS compliant. The Amphenol RF 901-293 and Hirose HRM-553S are REACH affected. The Pomona Electronics 4298 is REACH unaffected. Selection depends on regulatory requirements for the end application and geographic market.

Q: Can these adapters be used in applications requiring high mating cycle counts?

A: The Hirose HRM-553S specifies 1000 mating cycles. The Amphenol RF 901-293 and Pomona Electronics 4298 do not provide mating cycle specifications. For applications requiring documented mating cycle performance, the HRM-553S is the specified choice.

Q: Are all three parts available in bulk packaging?

A: Yes. All three parts are supplied in bulk packaging with current inventory availability: Amphenol RF 901-293 (1163 pcs), Hirose HRM-553S (747 pcs), and Pomona Electronics 4298 (767 pcs).

Q: What connector types are compatible with these adapters?

A: These adapters convert SMA plug (male pin) connectors to N jack (female socket) connectors. They are compatible with any standard SMA plug connector on one end and any standard N jack connector on the other end.