Coaxial Connectors (RF)

Part Number	Description / PDF	Quantity
0732513152 Woodhead - Molex	CONN RPSMA JCK STR 50OHM EDGEMNT	4048
0734151040 Woodhead - Molex	CONN MCX JACK STR 50 OHM PCB	0
0733000150 Woodhead - Molex	CONN SMPM JACK STR 50OHM SOLDER	402
0732761350 Woodhead - Molex	CONN N JACK STR 50 OHM SOLDER	76
0731740040 Woodhead - Molex	CONN 1.0/2.3 JACK R/A 50 OHM PCB	929
0732513480 Woodhead - Molex	CONN SMA JACK STR 50 OHM SMD	102
0731710702 Woodhead - Molex	CONN BNC RCPT STR 75 OHM PCB	0
0734040190 Woodhead - Molex	CONN SMB JACK STR 75 OHM SMD	3418
0734036267 Woodhead - Molex	CONN FAKRA PLUG STR 50 OHM CRIMP	808
0732510051 Woodhead - Molex	CONN SMA PLUG STR 50 OHM SOLDER	651
0733870020 Woodhead - Molex	CONN 2.4MM JACK 50 OHM COMPRESS	7189
0734153640 Woodhead - Molex	CONN MCX PLUG R/A 75 OHM SOLDER	7268
0734153595 Woodhead - Molex	CONN SMP PLUG STR 50OHM EDGE MNT	360
0734156180 Woodhead - Molex	CONN SMP PLUG STR 50 OHM SMD	1785
0731713350 Woodhead - Molex	CONN BNC JACK R/A 75 OHM PCB	2968
0734150780 Woodhead - Molex	CONN MCX RCPT R/A 75 OHM PCB	949
0732513802 Woodhead - Molex	CONN SMA JACK STR 50 OHM SOLDER	535
0732510420 Woodhead - Molex	CONN SMA RCPT STR 50 OHM SOLDER	920
0731740093 Woodhead - Molex	CONN BNC PLUG STR 50 OHM CRIMP	187
0734042320 Woodhead - Molex	CONN SMB PLUG R/A 50OHM SOLDER	464

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.