CS-SF-MHA SMA Connector Jack Equivalent & Substitute Parts

Part Overview

The CS-SF-MHA is an SMA connector jack manufactured by Crystek Corporation, designed as a female socket free hanging (in-line) solder termination coaxial connector for RF applications. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support, maintenance, and new design implementations where legacy component compatibility is required.

Substiute Parts

CS-SF-MHA

Crystek CorporationIn Stock: 1185CS-SF-MHA Datasheet

Current PartRFQ

1050931-1

TE Connectivity Aerospace, Defense and MarineIn Stock: 7181050931-1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete CS-SF-MHA is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector Style: SMA
• Connector Type: Jack, Female Socket
• Contact Termination: Solder
• Shield Termination: Clamp
• Mounting Type: Free Hanging (In-Line)
• Fastening Type: Threaded
• Number of Ports: 1
• Center Contact Material: Beryllium Copper
• Body Material: Stainless Steel
• Center Contact Plating: Gold
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part 1050931-1 (TE Connectivity Aerospace, Defense and Marine) meets all mandatory matching parameters. This part is active in production status and provides enhanced specifications including defined impedance (50 Ohms), operating temperature range (-65°C to 165°C), mating cycle rating (500), and voltage rating (500 V), which the original part does not specify. The substitute utilizes PTFE dielectric material instead of PEI, which is compatible with the same frequency and impedance class applications.

Parameter Comparison

Engineering Selection Recommendations

The 1050931-1 from TE Connectivity Aerospace, Defense and Marine is the qualified substitute for the obsolete CS-SF-MHA. Selection is based on the following engineering criteria:

Product Status: The substitute part maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete original part.

Compliance & Certifications: The 1050931-1 is ROHS3 compliant, meeting current environmental and regulatory requirements. Both parts carry EAR99 ECCN classification and share identical HTSUS codes (8536.69.4010), confirming regulatory equivalence.

Functional Equivalence: All critical mechanical and electrical parameters match the original specification. The substitute provides additional defined specifications (50 Ohm impedance, operating temperature range, mating cycle rating, and voltage rating) that were not specified in the original part, offering enhanced design documentation and reliability assurance.

Dielectric Material Difference: The substitute uses PTFE dielectric instead of PEI. Both materials are suitable for RF coaxial connector applications at the specified frequency ranges and impedance class. PTFE offers superior low-loss characteristics and is the industry standard for precision RF connectors.

Military Series Qualification: The substitute is qualified to MIL-PRF-39012 military standard, providing additional assurance of manufacturing quality and performance consistency.

Frequently Asked Questions (FAQ)

Q: Can 1050931-1 directly replace CS-SF-MHA in existing assemblies?

A: Yes. Both connectors are SMA jack female socket solder termination types with identical mechanical interfaces (threaded fastening, free hanging mounting, clamp shield termination). The connector body dimensions and mating interface are equivalent, allowing direct mechanical and electrical substitution in existing PCB layouts and cable assemblies.

Q: What is the significance of the dielectric material change from PEI to PTFE?

A: PTFE (polytetrafluoroethylene) is the standard dielectric material for precision RF coaxial connectors. It provides lower dielectric loss, better frequency response stability, and superior moisture resistance compared to PEI. This change represents an upgrade in RF performance characteristics while maintaining mechanical compatibility.

Q: Are there any temperature or frequency limitations when substituting?

A: The substitute part 1050931-1 specifies operating temperature range (-65°C to 165°C) and maximum frequency (18 GHz). Applications using the original CS-SF-MHA should verify that their operating conditions fall within these specified limits. If the original part was used in applications exceeding 18 GHz or outside the temperature range, additional evaluation is required.

Q: What is the cable group compatibility?

A: The original part references Harbour LL142 cable group, while the substitute is specified for RG-402 (.141" semi-rigid) cable. Both are standard SMA-compatible cable types. Verify cable compatibility with your specific application requirements and connector mating specifications.

Q: Does the substitute part include the same components?

A: The substitute part 1050931-1 includes 6 pieces per connector: 1 connector body, 1 clamp, 1 contact, 2 insulators, and 1 sleeve. Verify that your assembly process accommodates these included components or adjust procurement quantities accordingly.

Q: Are there compliance or export considerations?

A: Both parts carry EAR99 ECCN classification and share identical HTSUS codes. The substitute is ROHS3 compliant, meeting current environmental regulations. No additional compliance barriers exist for substitution.