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

Part Overview

The RFSMACJABB is an SMA connector jack manufactured by Bulgin, designed as a female socket with 50 ohms impedance for board edge, end launch solder termination applications. This coaxial RF connector operates across frequencies up to 26.5 GHz and is rated for operating temperatures from -55°C to 155°C. The part is currently active in production with 645 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 requirements permit selection from qualified alternatives that meet identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Connector Style	SMA
Connector Type	Jack, Female Socket
Impedance	50 Ohms
Mounting Type	Board Edge, End Launch
Contact Termination	Solder
Shield Termination	Solder
Frequency Maximum	26.5 GHz
Fastening Type	Threaded
Number of Ports	1
Mating Cycles	500
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RFSMACJABB is permissible with parts that maintain identical electrical and mechanical characteristics across the following critical parameters:

Electrical Equivalence Requirements:

Connector style: SMA
Connector type: Jack, Female Socket
Impedance: 50 Ohms
Frequency maximum: 26.5 GHz
Fastening type: Threaded
Number of ports: 1
Mating cycles: 500

Mechanical Equivalence Requirements:

Mounting type: Board Edge, End Launch
Contact termination: Solder
Shield termination: Solder

Environmental and Compliance Requirements:

RoHS3 Compliance
Moisture Sensitivity Level: 1 (Unlimited)

All substitute parts listed below satisfy these core requirements. Variations in dielectric material, center contact plating, body material finish, operating temperature range, and voltage rating do not preclude substitution when the primary electrical and mechanical parameters remain constant.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Connector Style	Connector Type	Impedance	Mounting Type	Contact Termination	Shield Termination	Frequency Max (GHz)	Fastening Type	Mating Cycles	RoHS Status	MSL	Inventory (Pcs)
RFSMACJABB	Bulgin	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	Solder	26.5	Threaded	500	ROHS3 Compliant	1 (Unlimited)	645
RFSMACJAAA	Bulgin	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	Solder	26.5	Threaded	500	ROHS3 Compliant	1 (Unlimited)	718
142-0761-811	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	Solder	26.5	Threaded	500	ROHS3 Compliant	1 (Unlimited)	35497
142-0761-841	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	Solder	26.5	Threaded	500	ROHS3 Compliant	1 (Unlimited)	1502
142-0761-851	Cinch Connectivity Solutions Johnson	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	Solder	26.5	Threaded	500	ROHS3 Compliant	1 (Unlimited)	1679
142-0761-861	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	Solder	26.5	Threaded	500	ROHS3 Compliant	1 (Unlimited)	1097
142-0761-871	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	Solder	26.5	Threaded	500	ROHS3 Compliant	1 (Unlimited)	2377
142-0761-891	Cinch Connectivity Solutions Johnson	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	Solder	26.5	Threaded	500	ROHS3 Compliant	1 (Unlimited)	788
142-0771-821	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	Solder	26.5	Threaded	500	ROHS3 Compliant	1 (Unlimited)	1442
142-0771-831	Cinch Connectivity Solutions Johnson	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	Solder	26.5	Threaded	500	RoHS Compliant	1 (Unlimited)	2200
142-0781-821	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	Solder	26.5	Threaded	500	ROHS3 Compliant	1 (Unlimited)	2085

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and mechanical compatibility with the RFSMACJABB. Selection among these alternatives is based on the following engineering considerations:

Manufacturer Availability: The RFSMACJABB is manufactured by Bulgin. The parametric equivalent RFSMACJAAA is also manufactured by Bulgin and provides direct manufacturer continuity with identical specifications and 718 units in stock.

Supply Chain Diversification: Cinch Connectivity Solutions manufactures the 142-series alternatives (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). These parts maintain all critical electrical and mechanical parameters and offer significantly higher inventory availability, with the 142-0761-811 variant providing 35,497 units in stock.

Compliance Status: All substitute parts are ROHS3 compliant or RoHS compliant and carry MSL rating of 1 (Unlimited), matching the primary part's environmental qualification. The 142-0771-831 variant carries RoHS Compliant status rather than ROHS3 Compliant; this does not preclude substitution as both certifications satisfy regulatory requirements for this product category.

Inventory Considerations: When supply of the primary RFSMACJABB is constrained, the 142-0761-811 variant from Cinch Connectivity Solutions offers the highest inventory availability at 35,497 units, followed by 142-0761-871 at 2,377 units and 142-0771-831 at 2,200 units.

Frequently Asked Questions (FAQ)

Q: Can I substitute the RFSMACJABB with any of the listed alternatives without design modification?

A: Yes. All listed substitute parts maintain identical SMA connector style, jack female socket configuration, 50 ohms impedance, board edge end launch mounting, solder termination, 26.5 GHz frequency rating, threaded fastening, and 500 mating cycle specification. Direct substitution is permissible without circuit or mechanical redesign.

Q: What is the difference between RFSMACJABB and RFSMACJAAA?

A: Both parts are manufactured by Bulgin and share identical electrical and mechanical specifications. The primary difference is inventory availability, with RFSMACJAAA offering 718 units compared to 645 units for RFSMACJABB. Both are ROHS3 compliant with MSL rating of 1 (Unlimited).

Q: Why do the Cinch Connectivity Solutions parts have different voltage ratings and operating temperature ranges?

A: The Cinch 142-series parts specify a voltage rating of 170 V and operating temperature range of -65°C to 165°C, compared to the Bulgin RFSMACJABB specification of 335 V and -55°C to 155°C. These parameter variations do not affect substitution eligibility because the critical electrical and mechanical parameters that define SMA connector compatibility remain identical. The Cinch parts are qualified for the same 50 ohms impedance, 26.5 GHz frequency, and board edge end launch configuration.

Q: Are there any compliance or regulatory differences between the Bulgin and Cinch alternatives?

A: All parts are ROHS3 compliant or RoHS compliant and carry MSL rating of 1 (Unlimited). The Cinch 142-0761 series parts carry REACH Affected status, while the Bulgin RFSMACJAAA carries REACH Unaffected status. Both compliance profiles are acceptable for this connector category. The 142-0771-831 variant carries REACH Unaffected status, matching the Bulgin profile.

Q: What is the difference between dielectric materials used in these connectors?

A: The Bulgin RFSMACJABB uses Polyetherimide (PEI) dielectric material, while the Cinch 142-series alternatives use Polytetrafluoroethylene (PTFE) dielectric material. Both materials are suitable for 50 ohms SMA connectors operating to 26.5 GHz. This material difference does not preclude substitution as the electrical performance and impedance characteristics remain equivalent.

Q: Which substitute part should I select for maximum inventory availability?

A: The 142-0761-811 manufactured by Cinch Connectivity Solutions offers the highest inventory availability at 35,497 units in stock. This part maintains all critical electrical and mechanical specifications of the RFSMACJABB and is ROHS3 compliant with MSL rating of 1 (Unlimited).

Q: Can I use the 142-0771-831 as a substitute if my application requires RoHS compliance but not specifically ROHS3?

A: Yes. The 142-0771-831 carries RoHS Compliant status, which satisfies regulatory requirements for this product category. This part maintains all critical electrical and mechanical parameters and offers 2,200 units in stock. The distinction between RoHS and ROHS3 compliance does not affect substitution eligibility for SMA connector applications.

Q: Are all substitute parts suitable for the same frequency range as the RFSMACJABB?

A: Yes. All listed substitute parts are rated for maximum frequency of 26.5 GHz, matching the RFSMACJABB specification. This ensures equivalent RF performance across the full operating bandwidth.

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