CS-FF-MSB Equivalent & Substitute Parts

Part Overview

The CS-FF-MSB is a 2.92mm coaxial connector jack manufactured by Crystek Corporation, designed for RF applications requiring female socket termination via solder. This connector features a free-hanging (in-line) mounting configuration with stainless steel construction and gold-plated beryllium copper contacts. The product is currently obsolete, making equivalent substitute parts necessary for ongoing system maintenance, repair, and component sourcing in legacy RF systems.

Substiute Parts

CS-FF-MSB

Crystek CorporationIn Stock: 1207CS-FF-MSB Datasheet

Current PartRFQ

SF1521-60042

Amphenol SV MicrowaveIn Stock: 980SF1521-60042 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS-FF-MSB is determined by strict alignment with the following core parameters:

• Connector Style & Type: Must be 2.92mm jack, female socket configuration
• Contact Termination: Must be solder-based termination
• Mounting Configuration: Must be free-hanging (in-line) with threaded fastening
• Contact Materials & Plating: Must maintain beryllium copper center contact with gold plating
• Body Construction: Must use stainless steel body material
• Moisture Sensitivity: Must maintain MSL 1 rating

The substitute part SF1521-60042 (Amphenol SV Microwave) meets all mandatory substitution criteria. While this substitute introduces additional specifications (50 Ohm impedance, 34 GHz maximum frequency, 500 mating cycles), these represent enhanced or defined performance characteristics that do not conflict with the original part's application scope.

Parameter Comparison

Engineering Selection Recommendations

The SF1521-60042 serves as a direct functional substitute for the obsolete CS-FF-MSB. Both connectors share identical mechanical interfaces (2.92mm jack, female socket, threaded fastening) and core material specifications (beryllium copper contacts with gold plating, stainless steel body). Both maintain MSL 1 moisture sensitivity ratings and identical export control classifications (EAR99).

The primary distinction is product status: CS-FF-MSB is obsolete with limited inventory (1112 pcs), while SF1521-60042 is active production with comparable availability (954 pcs). The substitute introduces defined electrical performance (50 Ohm impedance, 34 GHz maximum frequency, 500 mating cycles) and employs solder-based shield termination versus clamp termination on the original. Both parts maintain full REACH compliance and identical HTSUS classification.

Selection of SF1521-60042 is appropriate for applications requiring 2.92mm coaxial jack connectivity with solder termination in RF systems operating within the specified frequency and impedance parameters.

Frequently Asked Questions (FAQ)

Q: Can SF1521-60042 directly replace CS-FF-MSB in existing assemblies?

A: Yes. Both connectors share identical 2.92mm jack, female socket mechanical interfaces with threaded fastening. Solder termination compatibility is maintained. Physical mounting and mating characteristics are equivalent.

Q: What is the difference in shield termination between these parts?

A: CS-FF-MSB uses clamp-based shield termination, while SF1521-60042 uses solder-based shield termination. Both methods provide RF shielding; the selection depends on assembly process requirements and cable configuration.

Q: Are there dielectric material differences that affect performance?

A: CS-FF-MSB uses PCTFE dielectric material, while SF1521-60042 uses PEI. Both materials maintain MSL 1 moisture sensitivity ratings. Material selection reflects manufacturer design choices and does not indicate performance incompatibility for standard RF applications.

Q: What is the significance of the 50 Ohm impedance specification on SF1521-60042?

A: The 50 Ohm specification on SF1521-60042 defines the connector's characteristic impedance for RF transmission line applications. This is a defined performance parameter that does not conflict with the original part's application scope.

Q: Are both parts RoHS compliant?

A: SF1521-60042 carries explicit RoHS3 compliance certification. CS-FF-MSB RoHS status is not specified in available documentation. Both parts maintain REACH Unaffected status and identical ECCN classification (EAR99).

Q: What packaging differences exist between these parts?

A: CS-FF-MSB packaging is not specified. SF1521-60042 is supplied in bag packaging. Packaging format does not affect connector functionality or mechanical compatibility.