Cinch Connectivity Solutions 131-3403-021 SMB Coaxial Connector Equivalent & Substitute Parts

Part Overview

The Cinch Connectivity Solutions 131-3403-021 is an SMB connector plug with female socket configuration, designed for 50-ohm RF applications. This free-hanging (in-line) connector supports crimp or solder termination and operates across a frequency range up to 4 GHz. The part is currently active in production with 982 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in RF coaxial applications without performance degradation.

Key Parameters

Parameter	Value
Connector Style	SMB
Connector Type	Plug, Female Socket
Impedance	50 Ohms
Contact Termination	Crimp or Solder
Shield Termination	Crimp
Mounting Type	Free Hanging (In-Line)
Frequency - Max	4 GHz
Operating Temperature Range	-65°C ~ 165°C
Voltage Rating	335 V
Insertion Loss	0.3 dB
Cable Group Compatibility	RG-161, 174, 179, 187, 188, 316

Substitute Part Grouping Explanation

The 131-3403-001 is classified as a parametric equivalent to the 131-3403-021 based on the following critical parameters:

Connector style, type, and gender configuration (SMB plug, female socket)
Electrical specifications: 50-ohm impedance, 4 GHz maximum frequency, 335 V voltage rating, 0.3 dB insertion loss
Termination methods: crimp or solder contact termination with crimp shield termination
Mechanical configuration: free-hanging (in-line) mounting with snap-on fastening
Material composition: beryllium copper center contact, brass body with gold finish, PTFE dielectric
Temperature and mating cycle ratings: -65°C to 165°C operating range, 500 mating cycles
Cable compatibility: RG-161, 174, 179, 187, 188, 316 cable groups

Both parts share the same base product number (131-3403), confirming their functional equivalence within the SMB connector family.

Parameter Comparison

Parameter	131-3403-021	131-3403-001
Manufacturer	Cinch Connectivity Solutions	Cinch Connectivity Solutions
Category	Coaxial Connectors (RF)	Coaxial Connectors (RF)
Connector Style	SMB	SMB
Connector Type	Plug, Female Socket	Plug, Female Socket
Contact Termination	Crimp or Solder	Crimp or Solder
Shield Termination	Crimp	Crimp
Impedance	50 Ohms	50 Ohms
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Cable Group	RG-161, 174, 179, 187, 188, 316	RG-161, 174, 179, 187, 188, 316
Fastening Type	Snap-On	Snap-On
Frequency - Max	4 GHz	4 GHz
Number of Ports	1	1
Housing Color	Gold	Gold
Center Contact Material	Beryllium Copper	Beryllium Copper
Body Material	Brass	Brass
Body Finish	Gold	Gold
Center Contact Plating	Gold	Gold
Dielectric Material	Polytetrafluoroethylene (PTFE)	Polytetrafluoroethylene (PTFE)
Operating Temperature	-65°C ~ 165°C	-65°C ~ 165°C
Voltage Rating	335 V	335 V
Mating Cycles	500	500
Insertion Loss	0.3 dB	0.3 dB
Base Product Number	131-3403	131-3403
Product Status	Active	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.4010	8536.69.4010

Engineering Selection Recommendations

Both the 131-3403-021 and 131-3403-001 are active production parts from Cinch Connectivity Solutions with identical electrical and mechanical specifications. Selection between these parts may be based on the following factors:

RoHS compliance level: The 131-3403-021 carries RoHS Compliant status, while the 131-3403-001 carries ROHS3 Compliant status. Applications requiring ROHS3 certification should specify the 131-3403-001.
REACH status: The 131-3403-001 is identified as REACH Affected. Applications subject to REACH regulations should reference this designation.
Package contents: The 131-3403-021 includes 3 pieces (1 connector, 1 contact, 1 sleeve), while the 131-3403-001 includes 2 pieces (1 connector, 1 sleeve). Assembly requirements may influence part selection.
Inventory availability: The 131-3403-021 has 982 units in stock; the 131-3403-001 has 2109 units in stock.

Both parts are suitable for direct substitution in 50-ohm RF coaxial applications operating up to 4 GHz with identical performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 131-3403-001 be used as a direct replacement for the 131-3403-021?

A: Yes. Both parts share identical electrical specifications (50-ohm impedance, 4 GHz frequency, 335 V rating, 0.3 dB insertion loss), mechanical configuration (SMB plug, female socket, free-hanging in-line mounting), and material composition. They are functionally equivalent for RF coaxial applications.

Q: What is the difference in package contents between these two parts?

A: The 131-3403-021 includes 3 pieces (1 connector, 1 contact, 1 sleeve), while the 131-3403-001 includes 2 pieces (1 connector, 1 sleeve). Verify that your assembly process accommodates the included components for your selected part.

Q: Are both parts compatible with the same cable types?

A: Yes. Both parts support RG-161, 174, 179, 187, 188, and 316 cable groups with identical crimp or solder termination methods.

Q: What is the difference in RoHS compliance between these parts?

A: The 131-3403-021 is RoHS Compliant, while the 131-3403-001 is ROHS3 Compliant. ROHS3 represents a more recent compliance standard. Select the 131-3403-001 if your application requires ROHS3 certification.

Q: Is the 131-3403-001 subject to REACH regulations?

A: Yes. The 131-3403-001 is identified as REACH Affected. Confirm compliance requirements with your regulatory or procurement department if REACH applicability is a factor in your component selection.

Q: Do both parts have the same operating temperature range?

A: Yes. Both parts operate across -65°C to 165°C with identical mating cycle ratings of 500 cycles and MSL 1 (Unlimited) moisture sensitivity level.

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