Coaxial Connectors (RF)

Part Number	Description / PDF	Quantity
0731000258 Woodhead - Molex	CONN SMB RCPT STR 75 OHM PCB	2682
0731000105 Woodhead - Molex	CONN BNC RCPT R/A 50 OHM PCB	7554
0731000069 Woodhead - Molex	CONN BNC RCPT R/A 75 OHM PCB	3100
0732510930 Woodhead - Molex	CONN SMA JACK STR 50 OHM SOLDER	1062
0731315003 Woodhead - Molex	CONN BNC RCPT STR 50 OHM PCB	1018
0732511150 Woodhead - Molex	CONN SMA RCPT STR 50OHM EDGE MNT	20766
0734151061 Woodhead - Molex	CONN MCX RCPT STR 50OHM EDGE MNT	12416
0732512300 Woodhead - Molex	CONN RP-SMA JACK STR 50 OHM PCB	839
0731000167 Woodhead - Molex	CONN BNC RCPT R/A 50 OHM PCB	1337
0734035123 Woodhead - Molex	SMB JACK FAKRA R/A PCB 50 OHM	338
0731385003 Woodhead - Molex	CONN BNC RCPT R/A 50 OHM PCB	2866
0734036263 Woodhead - Molex	CONN FAKRA PLUG STR 50 OHM CRIMP	330
0732160100 Woodhead - Molex	CONN TNC JACK STR 50 OHM CRIMP	0
0732520092 Woodhead - Molex	CONN 2.92MM JACK STR 50 OHM SMD	257
0732162231 Woodhead - Molex	CONN RP-TNC JACK R/A 50 OHM PCB	2105
0732510672 Woodhead - Molex	CONN SMA PLUG R/A 50 OHM SOLDER	329
0731712970 Woodhead - Molex	CONN BNC JACK STR 75 OHM CRIMP	364
0731000042 Woodhead - Molex	CONN N PLUG STR 50 OHM CRIMP	365
0734152063 Woodhead - Molex	CONN MMCX JACK STR 50 OHM SMD	14490
0734151000 Woodhead - Molex	CONN MMCX RCPT R/A 50 OHM PCB	0

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.