RFSMACJAAA SMA Connector Jack Equivalent & Substitute Parts

Part Overview

The RFSMACJAAA is an SMA Connector Jack manufactured by Bulgin, classified as a coaxial RF connector for board edge, end launch applications. This female socket connector operates at 50 Ohms impedance and is designed for solder termination on printed circuit boards. The part is currently Active in product status with 718 units in stock.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the connector's critical specifications: impedance, connector style, contact termination method, mounting type, frequency rating, and mating cycles. Alternative sources provide equivalent functional performance for applications requiring the RFSMACJAAA.

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
Fastening Type	Threaded
Frequency - Max	26.5 GHz
Number of Ports	1
Mating Cycles	500
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the RFSMACJAAA are qualified based on strict equivalence of the following parameters:

Critical Electrical Parameters:

Impedance: 50 Ohms (all substitutes match)
Frequency - Max: 26.5 GHz (all substitutes match)
Connector Style: SMA (all substitutes match)
Connector Type: Jack, Female Socket (all substitutes match)

Critical Mechanical Parameters:

Mounting Type: Board Edge, End Launch (all substitutes match)
Contact Termination: Solder (all substitutes match)
Shield Termination: Solder (all substitutes match)
Fastening Type: Threaded (all substitutes match)
Number of Ports: 1 (all substitutes match)
Mating Cycles: 500 (all substitutes match)

Compliance Parameters:

RoHS Status: ROHS3 Compliant or RoHS Compliant (all substitutes meet or exceed requirement)
Moisture Sensitivity Level: 1 (Unlimited) or Not Applicable (all substitutes acceptable)

All identified substitute parts maintain these core parameters, enabling direct functional replacement in applications designed for the RFSMACJAAA.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Connector Style	Connector Type	Impedance	Mounting Type	Contact Termination	Frequency - Max	Mating Cycles	Operating Temperature	Voltage Rating	RoHS Status	Inventory
RFSMACJAAA	Bulgin	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	26.5 GHz	500	-55°C ~ 155°C	335 V	ROHS3 Compliant	718 Pcs
142-0761-811	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	26.5 GHz	500	-65°C ~ 165°C	170 V	ROHS3 Compliant	35497 Pcs
142-0761-841	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	26.5 GHz	500	-65°C ~ 165°C	170 V	ROHS3 Compliant	1502 Pcs
142-0761-851	Cinch Connectivity Solutions Johnson	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	26.5 GHz	500	-65°C ~ 165°C	170 V	ROHS3 Compliant	1679 Pcs
142-0761-861	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	26.5 GHz	500	-65°C ~ 165°C	170 V	ROHS3 Compliant	1097 Pcs
142-0761-871	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	26.5 GHz	500	-65°C ~ 165°C	170 V	ROHS3 Compliant	2377 Pcs
142-0761-891	Cinch Connectivity Solutions Johnson	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	26.5 GHz	500	-65°C ~ 165°C	170 V	ROHS3 Compliant	788 Pcs
142-0771-821	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	26.5 GHz	500	-65°C ~ 165°C	170 V	ROHS3 Compliant	1442 Pcs
142-0771-831	Cinch Connectivity Solutions Johnson	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	26.5 GHz	500	-65°C ~ 165°C	170 V	RoHS Compliant	2200 Pcs
142-0781-821	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	26.5 GHz	500	-65°C ~ 165°C	170 V	ROHS3 Compliant	2085 Pcs
142-0781-882	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Board Edge, End Launch	Solder	26.5 GHz	500	-65°C ~ 165°C	170 V	RoHS Compliant	867 Pcs

Engineering Selection Recommendations

All identified substitute parts maintain electrical and mechanical equivalence to the RFSMACJAAA across critical parameters including impedance, frequency rating, connector style, mounting configuration, and termination method.

Compliance Considerations:

The RFSMACJAAA carries ROHS3 Compliant status. All substitute parts from Cinch Connectivity Solutions meet or exceed this requirement, with most carrying ROHS3 Compliant certification. Parts 142-0771-831 and 142-0781-882 carry RoHS Compliant status, which satisfies the compliance requirement.

Inventory Availability:

Substitute parts demonstrate varying inventory levels. Part 142-0761-811 offers the highest availability at 35,497 units. Parts 142-0761-871 (2,377 units), 142-0771-831 (2,200 units), and 142-0781-821 (2,085 units) provide substantial stock levels. Lower inventory options include 142-0781-882 (867 units), 142-0761-891 (788 units), and 142-0761-861 (1,097 units).

Operating Temperature Range:

The RFSMACJAAA operates across -55°C to 155°C. All substitute parts extend this range to -65°C to 165°C, providing broader environmental capability.

Voltage Rating Differential:

The RFSMACJAAA carries a 335 V voltage rating, while all substitute parts are rated at 170 V. Applications requiring the full 335 V rating must retain the RFSMACJAAA. Applications operating below 170 V can utilize any substitute part.

Frequently Asked Questions (FAQ)

Q: What makes these parts functionally equivalent to the RFSMACJAAA?

A: All substitute parts maintain identical specifications for connector style (SMA), connector type (Jack, Female Socket), impedance (50 Ohms), mounting type (Board Edge, End Launch), contact and shield termination (Solder), fastening type (Threaded), maximum frequency (26.5 GHz), number of ports (1), and mating cycles (500). These parameters define the functional performance and mechanical compatibility of the connector.

Q: Are there any electrical performance differences between the RFSMACJAAA and its substitutes?

A: The electrical specifications are equivalent across all parts. The primary difference is voltage rating: the RFSMACJAAA is rated at 335 V while substitute parts are rated at 170 V. For applications operating below 170 V, this difference is not functionally significant.

Q: Can I use a substitute part if my application requires the full 335 V rating?

A: No. If your application requires operation at voltages exceeding 170 V, the RFSMACJAAA must be used. Substitute parts are not rated for voltages above 170 V.

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

A: Both certifications indicate compliance with Restriction of Hazardous Substances regulations. ROHS3 represents the most current version of the directive. Parts carrying either certification meet regulatory requirements for hazardous substance restrictions.

Q: Do the substitute parts have different operating temperature ranges?

A: Yes. The RFSMACJAAA operates from -55°C to 155°C. All substitute parts operate from -65°C to 165°C, providing an extended temperature range. This makes substitutes suitable for applications requiring lower minimum or higher maximum operating temperatures.

Q: Are there differences in dielectric material between the RFSMACJAAA and substitutes?

A: Yes. The RFSMACJAAA uses Polyetherimide (PEI) as the dielectric material. Most substitute parts use Polytetrafluoroethylene (PTFE). Both materials are suitable for RF applications at 26.5 GHz and maintain the 50 Ohm impedance specification.

Q: What is the Moisture Sensitivity Level (MSL) and does it affect substitution?

A: The RFSMACJAAA carries MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Most substitute parts also carry MSL 1 (Unlimited), while some carry "Not Applicable" status. All options are acceptable for standard handling and storage conditions.

Q: Can I mix RFSMACJAAA and substitute parts in the same assembly?

A: Yes. Since all parts maintain identical electrical and mechanical specifications for the critical parameters, they can be used interchangeably within the same assembly. However, if your application requires the 335 V rating, the RFSMACJAAA must be used exclusively.

Q: Which substitute part should I select if inventory is a concern?

A: Part 142-0761-811 offers the highest inventory availability at 35,497 units. If this part is unavailable, alternatives with substantial stock include 142-0761-871 (2,377 units), 142-0771-831 (2,200 units), and 142-0781-821 (2,085 units).

Q: Are there any packaging differences between the RFSMACJAAA and substitute parts?

A: All parts are supplied in Bulk packaging. No special packaging considerations apply to substitution.

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