RFSMACJABC SMA Connector Jack Female Socket 50 Ohms Board Edge End Launch

Part Overview

The RFSMACJABC is an SMA connector jack manufactured by Bulgin, designed as a female socket with 50 ohms impedance for board edge end launch applications. This coaxial RF connector features solder termination for both contact and shield, operating across a frequency range up to 26.5 GHz. The component is currently active in production status with 639 pieces available in new original inventory.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative sourcing is required for supply chain optimization, or when design flexibility permits the use of functionally compatible components from different manufacturers that meet identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	RFSMACJABC
Manufacturer	Bulgin
Category	Coaxial Connectors (RF)
Connector Style	SMA
Connector Type	Jack, Female Socket
Impedance	50 Ohms
Mounting Type	Board Edge, End Launch
Contact Termination	Solder
Shield Termination	Solder
Frequency - Max	26.5 GHz
Fastening Type	Threaded
Number of Ports	1
Housing Color	Gold
Center Contact Material	Beryllium Copper
Body Material	Brass
Body Finish	Gold
Dielectric Material	Polyetherimide (PEI)
Operating Temperature	-55°C ~ 155°C
Voltage Rating	335 V
Mating Cycles	500
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution of the RFSMACJABC is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

Connector Style: SMA
Connector Type: Jack, Female Socket
Impedance: 50 Ohms
Frequency - Max: 26.5 GHz
Number of Ports: 1
Fastening Type: Threaded

Mechanical Compatibility Requirements:

Mounting Type: Board Edge, End Launch
Contact Termination: Solder
Shield Termination: Solder

Environmental and Compliance Requirements:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
Product Status: Active

All substitute parts listed maintain identical electrical performance characteristics, mechanical mounting interfaces, and termination methods. Variations in dielectric material (Polyetherimide versus Polytetrafluoroethylene), center contact plating, operating temperature range, and voltage rating represent secondary design differences that do not affect functional substitution within the specified parameter set.

Parameter Comparison

Parameter	RFSMACJABC (Bulgin)	RFSMACJAAA (Bulgin)	142-0761-811 (Cinch)	142-0761-841 (Cinch)	142-0761-851 (Cinch)	142-0761-861 (Cinch)	142-0761-871 (Cinch)	142-0761-891 (Cinch)	142-0771-821 (Cinch)	142-0771-831 (Cinch)	142-0781-821 (Cinch)
Connector Style	SMA	SMA	SMA	SMA	SMA	SMA	SMA	SMA	SMA	SMA	SMA
Connector Type	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket
Impedance	50 Ohms	50 Ohms	50 Ohms	50 Ohms	50 Ohms	50 Ohms	50 Ohms	50 Ohms	50 Ohms	50 Ohms	50 Ohms
Mounting Type	Board Edge, End Launch	Board Edge, End Launch	Board Edge, End Launch	Board Edge, End Launch	Board Edge, End Launch	Board Edge, End Launch	Board Edge, End Launch	Board Edge, End Launch	Board Edge, End Launch	Board Edge, End Launch	Board Edge, End Launch
Contact Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shield Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Frequency - Max	26.5 GHz	26.5 GHz	26.5 GHz	26.5 GHz	26.5 GHz	26.5 GHz	26.5 GHz	26.5 GHz	26.5 GHz	26.5 GHz	26.5 GHz
Fastening Type	Threaded	Threaded	Threaded	Threaded	Threaded	Threaded	Threaded	Threaded	Threaded	Threaded	Threaded
Number of Ports	1	1	1	1	1	1	1	1	1	1	1
Housing Color	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Center Contact Material	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper
Body Material	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass
Body Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Mating Cycles	500	500	500	500	500	500	500	500	500	500	500
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not Applicable
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, ensuring continued availability and regulatory conformance. The RFSMACJAAA from Bulgin provides direct manufacturer equivalence with identical specifications and REACH unaffected status.

The Cinch Connectivity Solutions parts (142-0761 series, 142-0771 series, and 142-0781 series) are functionally equivalent across all critical electrical and mechanical parameters. These alternatives offer higher inventory availability, with the 142-0761-811 variant providing 35,497 pieces in stock compared to 639 pieces for the primary part.

Selection between Bulgin and Cinch alternatives should be based on supply chain requirements, inventory availability, and procurement lead times. All parts are certified for identical RF performance at 26.5 GHz maximum frequency and maintain 50 ohms impedance specification.

Frequently Asked Questions (FAQ)

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

A: Yes. All substitute parts listed maintain identical electrical specifications (50 ohms impedance, 26.5 GHz maximum frequency), mechanical mounting configuration (board edge end launch), and termination method (solder contact and shield). Direct substitution is supported without circuit redesign.

Q: What is the difference between the Bulgin RFSMACJAAA and the Cinch 142-0761 series?

A: Both are functionally equivalent for RF performance. The primary differences are dielectric material (Polyetherimide in RFSMACJAAA versus Polytetrafluoroethylene in Cinch parts), operating temperature range (-55°C to 155°C versus -65°C to 165°C), and voltage rating (335 V versus 170 V). These variations do not affect substitution compatibility within the specified parameter set.

Q: Are there inventory considerations when selecting a substitute part?

A: Yes. The RFSMACJABC has 639 pieces available. The Cinch 142-0761-811 offers significantly higher availability with 35,497 pieces in stock. Other Cinch variants range from 788 to 2,377 pieces. Inventory levels should be evaluated against project timeline requirements.

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

A: All substitute parts are ROHS3 compliant and active in production status. The Cinch 142-0771-831 is RoHS compliant (not specifically ROHS3). Most Cinch parts are REACH affected, while the Bulgin RFSMACJAAA is REACH unaffected. Compliance requirements should be verified against specific application and regional regulations.

Q: What is the significance of the MSL rating difference for part 142-0781-821?

A: The 142-0781-821 lists MSL as Not Applicable, while all other parts specify MSL 1 (Unlimited). This indicates different moisture sensitivity classification. For applications with strict moisture control requirements, parts with explicit MSL 1 rating are preferred.

Q: Can these parts be used interchangeably in high-frequency applications?

A: Yes. All parts support identical maximum frequency of 26.5 GHz and maintain 50 ohms impedance specification. Interchangeability is supported across the full frequency range for RF applications within these specifications.

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