R124052003 SMA Connector Plug Equivalent & Substitute Parts

Part Overview

The R124052003 is an SMA straight plug solder-type coaxial connector manufactured by Radiall USA, Inc. This male pin connector is designed for free-hanging (in-line) applications with 50-ohm impedance and operates across RF frequencies up to 18 GHz. The connector features a gold-plated stainless steel body with PTFE dielectric material and is rated for solder termination on both center contact and shield.

The R124052003 maintains active product status and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and termination methods. Alternative models are necessary to accommodate different packaging requirements, extended operating temperature ranges, or alternative center contact materials while maintaining functional equivalence in RF applications.

Key Parameters

Parameter	Value
Connector Style	SMA
Connector Type	Plug, Male Pin
Impedance	50 Ohms
Contact Termination	Solder
Shield Termination	Solder
Mounting Type	Free Hanging (In-Line)
Cable Group	RG-405 (.085" Semi Rigid)
Fastening Type	Threaded
Frequency - Max	18 GHz
Number of Ports	1
Body Material	Stainless Steel
Body Finish	Gold
Dielectric Material	Polytetrafluoroethylene (PTFE)
Operating Temperature	-65°C ~ 105°C
Voltage Rating	500 V
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the R124052003 is determined by strict adherence to the following core parameters:

Mandatory Matching Parameters:

Connector Style: SMA
Connector Type: Plug, Male Pin
Impedance: 50 Ohms
Contact Termination: Solder
Shield Termination: Solder
Mounting Type: Free Hanging (In-Line)
Cable Group: RG-405 (.085" Semi Rigid)
Fastening Type: Threaded
Frequency - Max: 18 GHz
Number of Ports: 1
Body Material: Stainless Steel
Body Finish: Gold
Center Contact Plating: Gold
Dielectric Material: PTFE

Variable Parameters (Non-Critical for Substitution):

Center Contact Material (Brass or Beryllium Copper)
Packaging Type (Box or Bulk)
Voltage Rating (335 V to 500 V)
Mating Cycles (100 to 500)
Operating Temperature Range (extended ranges acceptable)
Moisture Sensitivity Level
Includes (connector components may vary)

All identified substitute parts maintain electrical and mechanical compatibility with the R124052003 within the RF coaxial connector category. Substitutes are limited to active or recently active product status with ROHS3 compliance.

Parameter Comparison

Parameter	R124052003	9401-1083-010	R125052000	R125052002W	1-1478904-0	1050547-1	1050548-1
Manufacturer	Radiall USA, Inc.	Radiall USA, Inc.	Radiall USA, Inc.	Radiall USA, Inc.	TE Connectivity AMP	TE Connectivity AMP	TE Connectivity AMP
Connector Style	SMA	SMA	SMA	SMA	SMA	SMA	SMA
Connector Type	Plug, Male Pin	Plug, Male Pin	Plug, Male Pin	Plug, Male Pin	Plug, Male Pin	Plug, Male Pin	Plug, Male Pin
Impedance	50 Ohms	50 Ohms	50 Ohms	50 Ohms	50 Ohms	50 Ohms	50 Ohms
Contact Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shield Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Cable Group	RG-405 (.085")	RG-405 (.085")	RG-405 (.085")	RG-405 (.085")	RG-405 (.085")	RG-405 (.085")	RG-405 (.085")
Fastening Type	Threaded	Threaded	Threaded	Threaded	Threaded	Threaded	Threaded
Frequency - Max	18 GHz	18 GHz	18 GHz	18 GHz	18 GHz	18 GHz	18 GHz
Number of Ports	1	1	1	1	1	1	1
Body Material	Stainless Steel	Stainless Steel	Stainless Steel	Stainless Steel	Stainless Steel	Stainless Steel	Stainless Steel
Body Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Center Contact Plating	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Dielectric Material	PTFE	PTFE	PTFE	PTFE	PTFE	PTFE	PTFE
Operating Temperature	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 165°C	-65°C ~ 165°C	-65°C ~ 105°C	-65°C ~ 105°C
Voltage Rating	500 V	350 V	335 V	335 V	335 V	335 V	335 V
Mating Cycles	100	500	500	500	500	500	500
Center Contact Material	Brass	Beryllium Copper	Brass	Brass	Brass	Beryllium Copper	Beryllium Copper
Packaging	Box	Bulk	Bulk	Box	Bulk	Bulk	Bulk
Product Status	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Radiall USA, Inc. Manufacturer):

The R125052002W offers direct functional equivalence with extended operating temperature capability (-65°C ~ 165°C versus -65°C ~ 105°C). This part is suitable for applications requiring higher thermal performance while maintaining identical RF and mechanical specifications. Both R124052003 and R125052002W are packaged in boxes and maintain ROHS3 compliance with MSL Not Applicable status.

The R125052000 and 9401-1083-010 provide bulk packaging alternatives with enhanced mating cycle ratings (500 cycles versus 100 cycles). The 9401-1083-010 features beryllium copper center contact material, which may provide improved durability in high-cycle applications. Both maintain active product status and ROHS3 compliance.

Secondary Substitutes (TE Connectivity AMP Connectors Manufacturer):

The 1-1478904-0 (Greenpar series) and 1050547-1 and 1050548-1 are TE Connectivity equivalents that maintain all critical RF and mechanical parameters. The 1-1478904-0 offers extended operating temperature range (-65°C ~ 165°C) and includes three component pieces (connector, contact, insulator). The 1050547-1 and 1050548-1 are functionally identical with beryllium copper center contacts and include three component pieces each.

All substitute parts maintain ROHS3 compliance, REACH affected status, and EAR99 ECCN classification. Selection between substitutes should be based on packaging requirements (box versus bulk), center contact material preference (brass versus beryllium copper), operating temperature requirements, and mating cycle expectations.

Frequently Asked Questions (FAQ)

Q: Can the R124052003 be replaced with any of the listed substitute parts?

A: Yes. All listed substitute parts maintain identical SMA connector style, 50-ohm impedance, solder termination, free-hanging mounting, RG-405 cable compatibility, and 18 GHz frequency rating. Electrical and mechanical compatibility is assured across all substitutes.

Q: What is the difference between the R124052003 and R125052002W?

A: The primary difference is operating temperature range. The R125052002W operates from -65°C to 165°C, compared to -65°C to 105°C for the R124052003. Both are Radiall products with identical RF specifications and box packaging. The R125052002W is suitable for applications requiring extended thermal performance.

Q: Why do some substitutes have lower voltage ratings?

A: The R124052003 is rated at 500 V, while most substitutes are rated at 335 V or 350 V. These lower ratings remain suitable for standard RF applications. Selection should be based on specific application voltage requirements. The voltage rating difference does not affect RF performance at frequencies up to 18 GHz.

Q: What is the significance of center contact material differences (Brass versus Beryllium Copper)?

A: Both brass and beryllium copper center contacts are functionally equivalent for RF applications. Beryllium copper (used in 9401-1083-010, 1050547-1, and 1050548-1) may provide enhanced durability in high-cycle mating applications due to superior spring properties. Brass (used in R124052003, R125052000, R125052002W, and 1-1478904-0) is standard for general-purpose RF connector applications.

Q: Are there packaging differences between substitutes?

A: Yes. The R124052003 and R125052002W are supplied in box packaging. The 9401-1083-010, R125052000, 1-1478904-0, 1050547-1, and 1050548-1 are supplied in bulk packaging. Box packaging typically includes protective individual packaging, while bulk packaging is suitable for high-volume assembly operations.

Q: What does "Includes" mean in the part specifications?

A: The "Includes" field indicates the number of component pieces provided with each connector. The R124052003 includes the connector only. TE Connectivity parts (1-1478904-0, 1050547-1, 1050548-1) include three pieces: connector, contact, and insulator. This affects assembly procedures and component inventory management.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and are suitable for applications requiring RoHS certification. The R124052003 and R125052002W have MSL Not Applicable status, while other substitutes have MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions.

Q: Can I use a substitute with higher mating cycles in place of the R124052003?

A: Yes. The R124052003 is rated for 100 mating cycles. All substitute parts are rated for 500 mating cycles, providing enhanced durability for applications with frequent connector engagement and disengagement. This represents an improvement over the original specification.

Q: What is the difference between Radiall and TE Connectivity substitutes?

A: Both manufacturers provide functionally equivalent SMA connectors meeting identical RF and mechanical specifications. Radiall substitutes (9401-1083-010, R125052000, R125052002W) maintain the same manufacturer as the original part. TE Connectivity substitutes (1-1478904-0, 1050547-1, 1050548-1) are cross-manufacturer equivalents. Selection may depend on supply chain preferences, inventory availability, or existing supplier relationships.

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