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

Part Overview

The RFSMACJAAB 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 711 pieces in stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative manufacturers are required for supply chain diversification, or when design flexibility permits selection from multiple qualified sources meeting identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	RFSMACJAAB
Manufacturer	Bulgin
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
Operating Temperature	-55°C ~ 155°C
Voltage Rating	335 V
Mating Cycles	500
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the RFSMACJAAB is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

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
Mating Cycles: 500

All substitute parts listed below meet these mandatory electrical and mechanical requirements. Variations in secondary parameters such as dielectric material, center contact plating, operating temperature range, and voltage rating do not preclude substitution when the primary functional parameters remain identical.

Parameter Comparison

Parameter	RFSMACJAAB (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
Mating Cycles	500	500	500	500	500	500	500	500	500	500	500
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-65°C ~ 165°C	-65°C ~ 165°C	-65°C ~ 165°C	-65°C ~ 165°C	-65°C ~ 165°C	-65°C ~ 165°C	-65°C ~ 165°C	-65°C ~ 165°C	-65°C ~ 165°C
Voltage Rating	335 V	335 V	170 V	170 V	170 V	170 V	170 V	170 V	170 V	170 V	170 V
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant
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 comply with ROHS3 or RoHS standards, confirming their suitability for current design implementations.

Bulgin Equivalents: RFSMACJAAA is a direct parametric equivalent manufactured by Bulgin with identical electrical and mechanical specifications to the RFSMACJAAB. This part carries ROHS3 compliance and REACH Unaffected status.

Cinch Connectivity Solutions Equivalents: The Cinch 142-series parts (142-0761-811, 142-0761-841, 142-0761-851, 142-0761-861, 142-0761-871, 142-0761-891, 142-0771-821, 142-0771-831, and 142-0781-821) are parametric equivalents meeting all mandatory functional requirements. These parts feature extended operating temperature ranges (-65°C to 165°C versus -55°C to 155°C) and utilize polytetrafluoroethylene (PTFE) dielectric material. Most carry REACH Affected status, with 142-0771-831 marked as REACH Unaffected. All maintain ROHS3 compliance except 142-0771-831, which carries standard RoHS compliance.

Inventory availability varies across substitute options, with Cinch 142-0761-811 offering the highest stock level at 35,497 pieces.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the RFSMACJAAB?

A: Substitution is determined by equivalence across mandatory parameters: SMA connector style, jack female socket type, 50 ohms impedance, board edge end launch mounting, solder termination for both contact and shield, 26.5 GHz maximum frequency, threaded fastening, single port configuration, and 500 mating cycles. All listed parts meet these criteria.

Q: Are there differences between the Bulgin and Cinch substitute options?

A: The primary differences are dielectric material (Bulgin uses polyetherimide; Cinch uses polytetrafluoroethylene), operating temperature range (Bulgin -55°C to 155°C; Cinch -65°C to 165°C), voltage rating (Bulgin 335 V; Cinch 170 V), and regulatory status. All maintain identical RF performance characteristics and mechanical compatibility.

Q: Can I use a Cinch part in place of the Bulgin RFSMACJAAB?

A: Yes. All Cinch parts listed are parametric equivalents meeting the same electrical and mechanical specifications for SMA jack female socket 50 ohms board edge end launch applications. The extended temperature range and PTFE dielectric of Cinch parts provide additional operational margin in certain environments.

Q: What is the difference between ROHS3 Compliant and RoHS Compliant?

A: ROHS3 Compliant indicates compliance with the third iteration of the Restriction of Hazardous Substances directive, representing the current regulatory standard. RoHS Compliant (as listed for 142-0771-831) indicates compliance with earlier RoHS requirements. Both designations confirm hazardous substance restrictions are met.

Q: Which substitute part has the highest inventory availability?

A: Cinch 142-0761-811 has the highest inventory with 35,497 pieces in stock, compared to 711 pieces for the primary RFSMACJAAB and lower quantities for other substitutes.

Q: Does REACH status affect my ability to use these parts?

A: REACH Affected status indicates the part contains substances of concern under the Registration, Evaluation, Authorization and Restriction of Chemicals regulation. REACH Unaffected status indicates no such substances are present. Both statuses are compliant; selection depends on your specific regulatory requirements and supply chain policies.

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

A: Yes. All substitute parts support the same 26.5 GHz maximum frequency as the RFSMACJAAB, confirming suitability for identical RF applications.

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