Coaxial Connectors (RF)

Part Number	Description / PDF	Quantity
9453-1583-010 Radiall USA, Inc.	SMA F STR BHD SD .085	25
1019-1511-000 Radiall USA, Inc.	SMC M STR BHD SP	20
7209-1511-011 Radiall USA, Inc.	SSMB M STR NA	424
7410-1511-050 Radiall USA, Inc.	SSMB M RA BHD	166
2009-1511-016 Radiall USA, Inc.	SMB M STR BHD	50
R161010000 Radiall USA, Inc.	N M STR PF5/50 C50	89
7105-1521-002 Radiall USA, Inc.	SSMC F RA NA CR 2/50S	48
R223424800 Radiall USA, Inc.	MMBX F F SMT TR750	953
2009-7511-000 Radiall USA, Inc.	SMB M STR BHD	119
1703-1571-003 Radiall USA, Inc.	75OHM M STR BHD CR 2.6/50S	190
2005-1541-010 Radiall USA, Inc.	SMB F RA SDCL .086	23
9101-1573-019 Radiall USA, Inc.	SMA M STR NA CR 2.6/50D	18
R124426123 Radiall USA, Inc.	SMACOM F PCB C100	124
R222900437 Radiall USA, Inc.	SMPCOM F RA ST NMG	200
7004-1512-000 Radiall USA, Inc.	SSMC M STR BHD TUR	27
9079-9513-001 Radiall USA, Inc.	SMA F STR NWF	25
R113553000 Radiall USA, Inc.	MCX F BHD C100	45
R125055000 Radiall USA, Inc.	SMA M STR SD .141 C100	79
R125462000W Radiall USA, Inc.	SMA F STR NWF SHO	100
R125054901 Radiall USA, Inc.	SMA M STR CR .141 C100	197

Coaxial Connectors (RF)

1. Overview

RF coaxial connectors are electro-mechanical devices designed to transmit radio frequency (RF) signals between components or systems. They maintain signal integrity in coaxial cables by preserving impedance matching and shielding performance. These connectors are critical in telecommunications, aerospace, defense, and test equipment, enabling reliable high-frequency signal transmission up to 110 GHz in modern applications.

2. Main Types and Functional Classification

Type	Functional Features	Typical Applications
BNC	Bayonet coupling, 50/75 impedance, quick-connect	Test instruments, video systems, 10BASE-T Ethernet
N-Type	Threaded coupling, 50 , weatherproof	Cellular base stations, microwave links, broadcast equipment
SMA	Threaded, 0-18 GHz range, compact size	Wi-Fi antennas, GPS modules, RF modules
F-Type	Compression fitting, 75 impedance	Cable TV, satellite TV, CATV systems
LC	Miniature threaded, low PIM design	High-density telecom equipment, 5G infrastructure

3. Structure and Components

A typical RF coaxial connector consists of four key elements:

Center Conductor: Precision-machined pin/socket (beryllium copper or phosphor bronze) for signal transmission
Dielectric Insulator: PTFE or ceramic material maintaining 50/75 impedance and spacing
Outer Conductor: Brass or stainless steel shell providing 360 shielding (typical attenuation >80dB)
Connection Mechanism: Threaded (N, SMA), bayonet (BNC), or compression (F-type) interface with anti-rotation features

4. Key Technical Specifications

Parameter	Description	Importance
Frequency Range	0.01-110 GHz (varies by type)	Determines maximum usable bandwidth
Impedance	50 (standard) or 75	Matches cable/system requirements
VSWR	1.2:1 (typical) - 1.5:1 (high-performance)	Measures signal reflection efficiency
Insertion Loss	0.1-0.5 dB (varies with frequency)	Impacts signal strength preservation
Withstanding Voltage	500V-3000V AC	Safety and insulation capability

5. Application Fields

Telecommunications: 5G base stations (N-Type/LC), fiber modems (SC/FC)
Military/Aerospace: Radar systems (high-reliability N-Type), avionics (MIL-STD-348 compliant)
Test & Measurement: Spectrum analyzers (Precision SMA), oscilloscopes (BNC)
Consumer Electronics: Cable TV (F-Type), Wi-Fi routers (RP-SMA)
Industrial IoT: Wireless sensors (TNC), RFID readers (MMCX)

6. Leading Manufacturers and Products

Manufacturer	Key Products	Special Features
Amphenol	Series 5000 N-Type	IP68 rating, 0-11 GHz
TE Connectivity	Deutsch DMC	Military-grade vibration resistance
Rosenberger	4.3-10 Connector	70% smaller than N-Type, 6 GHz
Huber+Suhner	RadiX Hybrid	Combines RF and power in single interface
Southern California RF	Mini 50	High-density SMA alternative

7. Selection Recommendations

Key selection criteria include:

Frequency Requirements: BNC ( 4 GHz) vs SMA ( 18 GHz) vs 2.92mm ( 40 GHz)
Environmental Factors: Outdoor applications require IP67+ rated N-Type
Mechanical Durability: >500 mating cycles for test environments
Impedance Matching: 75 for video/cable TV systems
Space Constraints: Miniaturized options (MMCX, U.FL) for mobile devices

Case Study: In 5G massive MIMO systems, engineers prefer 4.3-10 connectors over traditional N-Type due to 30% size reduction and improved PIM performance (<-160dBc).

8. Industry Trends

Emerging development directions include:

Extreme Frequency: 110 GHz+ connectors for 6G and automotive radar
Miniaturization: 1.0mm connectors for wearable IoT devices
High-Density Integration: Multi-port arrays with integrated filters
Material Innovation: Graphene-enhanced contacts for reduced insertion loss
Smart Connectivity: Embedded sensors for real-time VSWR monitoring

Market forecasts indicate a CAGR of 7.2% (2023-2028), driven by 5G expansion and satellite internet demand.