TE Connectivity AMP Connectors 221790-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 221790-1 is an SMA Connector Jack, Female Socket rated for 50 Ohms impedance with through-hole, right-angle solder termination. This coaxial RF connector is designed for PCB mounting applications with a maximum frequency rating of 4 GHz and operating temperature range of -65°C to 165°C. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The connector features gold-plated beryllium copper center contacts, stainless steel body with gold finish, and PTFE dielectric material. With 1,325 units in stock, this reference provides direct and functional alternatives from active manufacturers.

Key Parameters

Parameter	Value
Connector Style	SMA
Connector Type	Jack, Female Socket
Impedance	50 Ohms
Mounting Type	Through Hole, Right Angle
Contact Termination	Solder
Shield Termination	Solder
Fastening Type	Threaded
Frequency - Max	4 GHz
Operating Temperature	-65°C ~ 165°C
Voltage Rating	335 V
Mating Cycles	500
Center Contact Material	Beryllium Copper
Dielectric Material	Polytetrafluoroethylene (PTFE)
RoHS Status	RoHS Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity 221790-1 are categorized into two groups based on electrical and mechanical compatibility:

Group 1: Direct SMA Jack Substitutes (Threaded Fastening)

These parts maintain identical connector style (SMA), connector type (Jack, Female Socket), impedance (50 Ohms), mounting configuration (through-hole, right-angle), termination method (solder), and fastening type (threaded). All parts in this group operate within the -65°C to 165°C temperature range and support 500 mating cycles. These substitutes are functionally interchangeable for applications requiring SMA jack connectors with threaded mating interfaces.

Qualifying parts: 901-143-3, 901-143, 141-0701-301, 142-0701-301, 142-0701-306, 142-9701-301

Group 2: Functional Alternatives (Different Connector Style or Fastening)

These parts share core RF characteristics (50 Ohms impedance, through-hole right-angle mounting, solder termination) but differ in connector style or fastening mechanism. This group includes SMA receptacles and QMA connectors with snap-on fastening. These alternatives require design evaluation for mechanical and electrical compatibility.

Qualifying parts: 0731000114 (SMA Receptacle), 050-653-0000310 (SMA Receptacle), 0732540240 (QMA Receptacle), 930-128J-51P (QMA Jack)

Parameter Comparison

Part Number	Manufacturer	Connector Style	Connector Type	Impedance	Mounting Type	Fastening Type	Frequency Max	Operating Temp	Voltage Rating	Mating Cycles	Product Status
221790-1	TE Connectivity AMP	SMA	Jack, Female Socket	50 Ohms	Through Hole, Right Angle	Threaded	4 GHz	-65°C ~ 165°C	335 V	500	Obsolete
901-143-3	Amphenol RF	SMA	Jack, Female Socket	50 Ohms	Through Hole, Right Angle	Threaded	18 GHz	-65°C ~ 165°C	Not Specified	500	Active
901-143	Amphenol RF	SMA	Jack, Female Socket	50 Ohms	Through Hole, Right Angle	Threaded	18 GHz	-65°C ~ 165°C	Not Specified	500	Active
141-0701-301	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Through Hole, Right Angle	Threaded	18 GHz	-65°C ~ 165°C	335 V	500	Active
142-0701-301	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Through Hole, Right Angle	Threaded	18 GHz	-65°C ~ 165°C	335 V	500	Active
142-0701-306	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Through Hole, Right Angle	Threaded	18 GHz	-65°C ~ 165°C	335 V	500	Active
142-9701-301	Cinch Connectivity Solutions	SMA	Jack, Female Socket	50 Ohms	Through Hole, Right Angle	Threaded	18 GHz	-65°C ~ 165°C	335 V	500	Active
0731000114	Molex	SMA	Receptacle, Female Socket	50 Ohms	Through Hole, Right Angle	Threaded	18 GHz	-65°C ~ 165°C	500 V	500	Active
050-653-0000310	ITT Cannon, LLC	SMA	Receptacle, Female Socket	50 Ohms	Through Hole, Right Angle	Threaded	18 GHz	-65°C ~ 165°C	Not Specified	500	Active
0732540240	Molex	QMA	Receptacle, Female Socket	50 Ohms	Through Hole, Right Angle	Snap-On	18 GHz	-65°C ~ 125°C	480 V	100	Active
930-128J-51P	Amphenol RF	QMA	Jack, Female Socket	50 Ohms	Through Hole, Right Angle	Snap-On	6 GHz	-40°C ~ 80°C	480 V	100	Active

Engineering Selection Recommendations

Primary Substitutes (Group 1 - Direct Equivalents)

For applications requiring direct functional replacement of the TE Connectivity 221790-1, the following active SMA jack connectors are recommended:

Amphenol RF 901-143-3 and 901-143 are fully compatible substitutes with identical mechanical and electrical characteristics. Both parts are active products with ROHS3 compliance and unlimited moisture sensitivity rating. The 901-143-3 variant offers higher frequency capability (18 GHz versus 4 GHz) while maintaining all other specifications. Both parts are available in bulk packaging with substantial inventory levels (1,009 and 2,571 units respectively).

Cinch Connectivity Solutions 142-0701-301 is the highest-inventory substitute with 35,497 units in stock. This part maintains identical operating temperature range, voltage rating, and mating cycle specifications. ROHS3 compliance and REACH affected status match the original part's regulatory profile. The brass body construction differs from the original stainless steel but provides equivalent RF performance.

Cinch Connectivity Solutions 141-0701-301 and 142-9701-301 provide additional alternatives with active product status and full compliance certifications. The 142-9701-301 variant includes non-magnetic features for specialized applications.

Cinch Connectivity Solutions 142-0701-306 offers a nickel-plated finish variant with silver housing color, suitable for applications requiring different surface finishes while maintaining identical electrical specifications.

Secondary Alternatives (Group 2 - Functional Alternatives)

For applications where connector style flexibility exists, the following alternatives provide 50 Ohms impedance with through-hole right-angle mounting:

Molex 0731000114 (SMA Receptacle) provides the highest inventory availability (14,804 units) among receptacle options. This part maintains identical operating temperature and mating cycle specifications with higher voltage rating (500 V). ROHS3 compliance and REACH unaffected status provide regulatory advantages.

ITT Cannon 050-653-0000310 (SMA Receptacle) offers active product status with 18 GHz frequency capability and 790 units in stock.

QMA Alternatives (Molex 0732540240 and Amphenol RF 930-128J-51P) require design evaluation due to different connector style and snap-on fastening. These parts operate at reduced temperature ranges and mating cycles compared to the original specification.

Frequently Asked Questions (FAQ)

Q: Can I use an SMA Receptacle as a substitute for the SMA Jack connector?

A: SMA Receptacles and SMA Jacks are mechanically and electrically distinct connector types. A receptacle cannot directly replace a jack in the same application. However, if your system design permits connector type substitution, receptacles such as Molex 0731000114 or ITT Cannon 050-653-0000310 provide equivalent 50 Ohms impedance and through-hole right-angle mounting. This substitution requires PCB layout and mating interface evaluation.

Q: What is the difference between threaded and snap-on fastening types?

A: The original TE Connectivity 221790-1 uses threaded fastening, which requires manual screw engagement for mating. QMA connectors with snap-on fastening (such as Molex 0732540240 and Amphenol RF 930-128J-51P) use a quick-connect mechanism. These fastening types are not interchangeable and require different mating interfaces. Threaded SMA substitutes maintain compatibility with existing mating hardware.

Q: Why do some substitutes have higher frequency ratings than the original part?

A: The original TE Connectivity 221790-1 is rated for 4 GHz maximum frequency. Active substitutes such as Amphenol RF 901-143-3 and Cinch Connectivity Solutions 142-0701-301 are rated for 18 GHz. Higher frequency ratings indicate improved RF performance characteristics and manufacturing standards. These parts are backward compatible with 4 GHz applications and provide performance margin for future system upgrades.

Q: Are all substitute parts RoHS compliant?

A: The original part is RoHS Compliant. Most active substitutes are ROHS3 Compliant, which represents a more recent compliance standard. Amphenol RF 901-143-3, Cinch Connectivity Solutions 142-0701-301, 142-0701-306, 142-9701-301, and Molex 0731000114 are ROHS3 Compliant. Amphenol RF 901-143 and 930-128J-51P are also ROHS3 Compliant. All substitutes meet or exceed the original RoHS requirements.

Q: What is the significance of MSL (Moisture Sensitivity Level) rating?

A: The original part and all primary substitutes carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage and handling. This rating permits standard warehouse storage without desiccant packaging or time-limited shelf life constraints. Molex 0731000114 also carries MSL 1 rating. ITT Cannon 050-653-0000310 carries Not Applicable MSL rating, indicating no moisture sensitivity concerns.

Q: Can I substitute the 221790-1 with a QMA connector?

A: QMA connectors (Molex 0732540240 and Amphenol RF 930-128J-51P) differ in connector style and fastening mechanism from the SMA jack original. QMA substitution requires design evaluation including mating interface compatibility, reduced operating temperature range (-40°C to 80°C versus -65°C to 165°C), and reduced mating cycle rating (100 versus 500 cycles). QMA connectors are not recommended as direct substitutes without comprehensive system redesign.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: Bulk packaging (Amphenol RF 901-143-3, 901-143; Cinch Connectivity Solutions 141-0701-301, 142-0701-301, 142-0701-306, 142-9701-301; ITT Cannon 050-653-0000310; Amphenol RF 930-128J-51P), Tray packaging (Molex 0731000114), and Bag packaging (Molex 0732540240). Packaging selection depends on assembly process requirements and inventory management practices.

Q: Which substitute offers the best inventory availability?

A: Cinch Connectivity Solutions 142-0701-301 provides the highest inventory level with 35,497 units in stock. This part maintains full compatibility with the original specification including operating temperature range, voltage rating, and mating cycles. Molex 0731000114 offers the second-highest availability (14,804 units) among receptacle alternatives.

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