CS-FM-MJB Equivalent & Substitute Parts

Part Overview

The CS-FM-MJB 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 threaded fastening. The product is currently obsolete, making equivalent substitute parts essential for system maintenance, repair, and legacy equipment support.

Substiute Parts

CS-FM-MJB

Crystek CorporationIn Stock: 832CS-FM-MJB Datasheet

Current PartRFQ

145-0694-001

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CS-FM-MJB is determined by strict adherence to the following core parameters:

• Connector Style: Must be 2.92mm to ensure mechanical and electrical compatibility with existing mating interfaces
• Connector Type: Must be Plug, Male Pin to maintain the same functional role in the assembly
• Contact Termination: Must be Solder to match the assembly process and mechanical attachment method
• Mounting Type: Must be Free Hanging (In-Line) to fit the same installation configuration
• Fastening Type: Must be Threaded to ensure proper coupling with mating connectors
• Center Contact Material: Beryllium Copper provides the required electrical and mechanical properties
• Body Material: Stainless Steel ensures corrosion resistance and structural integrity
• Center Contact Plating: Gold plating ensures reliable electrical contact and corrosion resistance

The substitute part 145-0694-001 meets all these core requirements while offering active product status and enhanced specifications.

Parameter Comparison

Engineering Selection Recommendations

The 145-0694-001 from Cinch Connectivity Solutions Johnson is the qualified substitute for the obsolete CS-FM-MJB. Selection is based on the following engineering criteria:

• Mechanical Compatibility: Both connectors share identical 2.92mm plug configuration, male pin type, and free-hanging in-line mounting, ensuring direct mechanical interchangeability
• Electrical Compatibility: Both use beryllium copper center contacts with gold plating and stainless steel bodies, maintaining electrical performance characteristics
• Termination Method: Both employ solder termination, allowing integration into existing assembly processes without modification
• Product Status: The 145-0694-001 is active and in production, ensuring long-term availability and supply chain continuity
• Compliance: Both parts carry EAR99 classification and meet MSL 1 requirements, maintaining regulatory compliance in existing designs
• RoHS Status: The 145-0694-001 is RoHS Compliant, providing environmental compliance advantages for new applications

Frequently Asked Questions (FAQ)

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

A: Yes. Both connectors meet the core substitution criteria: identical 2.92mm connector style, plug male pin type, solder termination, free-hanging in-line mounting, and threaded fastening. Mechanical and electrical compatibility is ensured.

Q: What is the primary difference between these two connectors?

A: The CS-FM-MJB is obsolete, while the 145-0694-001 is an active product. The 145-0694-001 provides additional specifications including 50 Ohm impedance, 40 GHz maximum frequency, operating temperature range of -65°C to 165°C, 335 V voltage rating, and 500 mating cycles. These enhancements do not affect backward compatibility.

Q: Are there packaging differences between the two parts?

A: The CS-FM-MJB packaging is not specified in available data. The 145-0694-001 is supplied in bulk packaging and includes 5 pieces per order: 1 connector, 1 contact, 1 coupling nut, 1 gasket, and 1 insulator.

Q: Does the shield termination difference affect substitution?

A: The CS-FM-MJB uses clamp shield termination while the 145-0694-001 uses solder shield termination. Both methods are standard for 2.92mm connectors and do not prevent mechanical or electrical substitution in typical applications.

Q: What cable compatibility should be considered?

A: The CS-FM-MJB is specified for IW 1501 cable group. The 145-0694-001 is specified for RG-402 (.141" semi-rigid) cable. Cable compatibility must be verified for the specific application to ensure proper impedance matching and mechanical fit.