CS-FM-MSC 2.92mm Coaxial Connector Plug Equivalent & Substitute Parts

Part Overview

The CS-FM-MSC is a 2.92mm coaxial connector plug manufactured by Crystek Corporation, designed for RF applications requiring solder termination. This connector features a male pin configuration with free hanging (in-line) mounting and is rated for 50 ohm impedance applications. The product is currently obsolete, making identification of suitable substitute components essential for system maintenance, repair, and legacy equipment support.

Substiute Parts

CS-FM-MSC

Crystek CorporationIn Stock: 808CS-FM-MSC Datasheet

Current PartRFQ

145-0694-001

Cinch Connectivity Solutions JohnsonIn Stock: 1104145-0694-001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS-FM-MSC is determined by strict alignment of the following electrical and mechanical parameters:

• Connector style: 2.92mm interface standard
• Connector type: Plug configuration with male pin
• Contact termination method: Solder attachment
• Mounting configuration: Free hanging (in-line) orientation
• Fastening mechanism: Threaded coupling
• Port count: Single port (1)
• Contact material composition: Beryllium copper
• Body construction: Stainless steel
• Contact plating: Gold finish
• Moisture sensitivity classification: MSL 1

The substitute part 145-0694-001 meets all these core parameters, enabling direct functional replacement in applications where the CS-FM-MSC was originally specified.

Parameter Comparison

Engineering Selection Recommendations

The 145-0694-001 manufactured by Cinch Connectivity Solutions Johnson is the qualified substitute for the obsolete CS-FM-MSC. Selection of this substitute is supported by the following factors:

All core mechanical and electrical parameters align with the original specification. The substitute maintains identical connector geometry, termination method, and contact materials. Both components share MSL 1 classification and EAR99 export control status.

The substitute part carries active product status with current manufacturing availability, addressing the obsolescence of the original component. The 145-0694-001 is RoHS compliant, meeting current environmental regulatory requirements. The substitute provides documented performance specifications including 50 ohm impedance, 40 GHz maximum frequency, 500 mating cycles, and -65°C to 165°C operating temperature range, which were not specified for the original part.

The primary difference is dielectric material composition: the original uses Polyphenylene Oxide and Polystyrene, while the substitute uses Polytetrafluoroethylene (PTFE). This material change represents an improvement in RF performance characteristics and environmental stability. Shield termination differs (clamp versus solder), requiring assessment of circuit board layout and assembly process compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 145-0694-001 be used as a direct replacement for the CS-FM-MSC?

A: Yes, the 145-0694-001 meets all core substitution parameters: identical 2.92mm connector style, male plug configuration, solder contact termination, free hanging mounting, threaded fastening, and single port design. Both components use beryllium copper contacts with gold plating on stainless steel bodies. Verification of shield termination compatibility with your specific circuit board design is required, as the substitute uses solder termination versus the original clamp method.

Q: What is the significance of the dielectric material difference?

A: The original CS-FM-MSC uses Polyphenylene Oxide and Polystyrene dielectrics, while the 145-0694-001 uses Polytetrafluoroethylene (PTFE). PTFE provides superior RF performance at high frequencies and improved moisture resistance. This material change is compatible with 2.92mm connector applications and represents a performance enhancement for RF signal integrity.

Q: Are there packaging differences between these components?

A: The CS-FM-MSC is supplied in unspecified packaging with 725 pieces in stock. The 145-0694-001 is supplied in bulk packaging and includes 5-piece kits containing the connector, contact, coupling nut, gasket, and insulator. Verify that the included components meet your assembly requirements.

Q: What compliance certifications apply to the substitute part?

A: The 145-0694-001 is RoHS compliant and carries EAR99 export classification. Both the original and substitute components are REACH unaffected. Moisture sensitivity level is MSL 1 (unlimited) for both parts, indicating no special storage or handling requirements.

Q: Are there frequency or temperature limitations for the substitute?

A: The 145-0694-001 is rated for maximum frequency of 40 GHz and operating temperature range of -65°C to 165°C. The original CS-FM-MSC specifications did not include these parameters. Confirm that your application requirements fall within these documented limits for the substitute component.