Coaxial Connectors (RF)

Part Number	Description / PDF	Quantity
0731740073 Woodhead - Molex	CONN BNC PLUG STR 50 OHM CRIMP	197
0732540110 Woodhead - Molex	CONN QMA PLUG R/A 50 OHM SOLDER	0
0734152161 Woodhead - Molex	CONN MMCX PLUG R/A 50 OHM SOLDER	3708
0734153980 Woodhead - Molex	CONN BNC JACK R/A 75 OHM PCB	0
0734151475 Woodhead - Molex	50 OHMS MMCX VERT JACK PCB	1237
0731626161 Woodhead - Molex	CONN 4.3/10 PLG R/A 50OHM SOLDER	176
0732055033 Woodhead - Molex	CONN TNC RCPT R/A 50 OHM PCB	2029
0734150991 Woodhead - Molex	CONN MMCX PLUG STR 50OHM EDGEMNT	0
0734151692 Woodhead - Molex	CONN MCX RCPT STR 50 OHM SMD	4644
0731711640 Woodhead - Molex	CONN BNC JACK R/A 75 OHM PCB	2138
0731000162 Woodhead - Molex	CONN BNC RCPT R/A 50 OHM PCB	0
0731342863 Woodhead - Molex	RF CONN RA 7/16 PLUG 1/2" 50 OHM	481
0731375013 Woodhead - Molex	CONN BNC RCPT R/A 50 OHM PCB	653
0734152064 Woodhead - Molex	CONN MMCX JACK STR 50 OHM SMD	2313
0734151251 Woodhead - Molex	CONN MMCX PLUG STR 50 OHM SOLDER	13538
0734154670 Woodhead - Molex	CONN SSMCX JCK STR 50OHM EDGEMNT	5249
0732160051 Woodhead - Molex	CONN TNC PLUG R/A 50 OHM SOLDER	115
0734150972 Woodhead - Molex	MMCX PLUG, STR, CRIMP, RG178/196	188
0734120114 Woodhead - Molex	CONN UMC RCPT STR 50 OHM SMD	27092
0734151631 Woodhead - Molex	CONN MCX RCPT STR 75 OHM SMD	2076

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.