CS-SM-MHD SMA Connector Plug Equivalent & Substitute Parts

Part Overview

The CS-SM-MHD is an SMA connector plug manufactured by Crystek Corporation, designed for coaxial RF applications requiring solder termination. This component features a male pin configuration with free hanging (in-line) mounting and stainless steel construction with gold-plated beryllium copper center contact.

The CS-SM-MHD is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this connector type.

Substiute Parts

CS-SM-MHD

Crystek CorporationIn Stock: 750CS-SM-MHD Datasheet

Current PartRFQ

1-1478908-0

TE Connectivity AMP ConnectorsIn Stock: 18021-1478908-0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Connector Style & Type: Must be SMA plug with male pin configuration
• Termination Method: Must utilize solder contact termination with clamp shield termination
• Mounting Configuration: Must support free hanging (in-line) installation
• Mechanical Interface: Must feature threaded fastening with single port
• Material Composition: Body must be stainless steel; dielectric must be PTFE; center contact must be gold-plated
• Regulatory Compliance: Must maintain EAR99 classification and MSL 1 rating

The substitute part 1-1478908-0 (TE Connectivity AMP Connectors) satisfies all mandatory substitution criteria. This part maintains identical connector style, type, termination methods, mounting configuration, and material specifications. The substitute is currently in active production status with enhanced availability (1786 pcs in stock versus 720 pcs for the obsolete CS-SM-MHD).

Parameter Comparison

Engineering Selection Recommendations

The 1-1478908-0 (TE Connectivity AMP Connectors) is the qualified substitute for the obsolete CS-SM-MHD. Selection rationale is based on the following factors:

Product Status & Availability: The CS-SM-MHD is obsolete with limited remaining inventory (720 pcs). The 1-1478908-0 is in active production with significantly higher availability (1786 pcs), ensuring long-term supply chain continuity.

Functional Equivalence: Both connectors maintain identical electrical and mechanical specifications across all critical parameters: SMA plug configuration, male pin type, solder termination, clamp shield termination, free hanging mounting, and threaded fastening.

Material & Construction: Both parts utilize stainless steel bodies with PTFE dielectric and gold-plated center contacts, ensuring equivalent RF performance and environmental durability.

Regulatory Compliance: Both parts maintain EAR99 classification and MSL 1 rating. The 1-1478908-0 additionally provides ROHS3 compliance, meeting modern regulatory requirements for new designs and production runs.

Cable Compatibility: The 1-1478908-0 supports RG-174A, 188A, and 316 cable groups, providing broader cable integration options compared to the CS-SM-MHD's Harbour SS402 specification.

Frequently Asked Questions (FAQ)

Q: Can the 1-1478908-0 directly replace the CS-SM-MHD in existing designs?

A: Yes. Both connectors share identical SMA plug configuration, male pin type, solder termination method, clamp shield termination, free hanging mounting, and threaded fastening. Mechanical and electrical interfaces are equivalent.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete vs. active), inventory availability, and regulatory certifications. The 1-1478908-0 includes ROHS3 compliance and REACH affected status, while the CS-SM-MHD does not specify these certifications. The 1-1478908-0 supports a broader range of cable groups (RG-174A, 188A, 316) versus the CS-SM-MHD's Harbour SS402 specification.

Q: Are there impedance differences between these connectors?

A: The CS-SM-MHD does not specify impedance in the provided data. The 1-1478908-0 is rated for 50 Ohms, which is the standard impedance for SMA connectors in RF applications. Both connectors are mechanically and electrically compatible for standard SMA applications.

Q: What is the mating cycle rating for the 1-1478908-0?

A: The 1-1478908-0 is rated for 500 mating cycles. The CS-SM-MHD does not specify a mating cycle rating in the provided data.

Q: Are both connectors suitable for high-frequency applications?

A: The 1-1478908-0 is specified for operation up to 18 GHz maximum frequency. The CS-SM-MHD does not specify a frequency rating in the provided data. Both utilize PTFE dielectric and gold-plated contacts, which are standard for RF applications.

Q: What packaging options are available?

A: The CS-SM-MHD is supplied in unspecified packaging. The 1-1478908-0 is supplied in bulk packaging and includes 6 pcs per package containing 1 connector, 1 braid clamp, 1 clamp, 1 contact, and 2 insulators.

Q: Do both connectors meet moisture sensitivity requirements?

A: Yes. Both connectors are rated MSL 1 (Unlimited), indicating no moisture sensitivity limitations for storage or handling.