Coaxial Connectors (RF)

Part Number	Description / PDF	Quantity
031-6509 Connex (Amphenol RF)	CONN TNC JACK R/A 50OHM SOLDER	0
1052986-1 TE Connectivity AMP Connectors	CONN SMA RCPT R/A 50 OHM SOLDER	108
172316 Connex (Amphenol RF)	CONN N PLUG R/A 50OHM SOLDER	187
02K722-40MS3 Rosenberger	2.92MM VERTICAL JACK PCB 26.5GHZ	50
HFU106P-5001-0L-VE Yamaichi Electronics	USCAR17 RATED VERTICAL FAKRA,CAR	50
0734035123 Woodhead - Molex	SMB JACK FAKRA R/A PCB 50 OHM	338
EZ-400-SF-X Times Microwave Systems	SMA FEMALE (JACK) STRAIGHT NON-S	94
531-40047-3 Connex (Amphenol RF)	CONN F JACK R/A 75 OHM PCB	628
CONSMA008-G Linx Technologies	CONN SMA RCPT STR 50 OHM PCB	1299
BJ26-5A Vitelec / Cinch Connectivity Solutions	CONN BNC JACK STR 50 OHM SOLDER	11
H2.4-LR-SR2(12) Hirose	CONN 2.4MM RCPT STR 50OHM EDGEMT	0
1052422-1 TE Connectivity AMP Connectors	CONN SMA RCPT STR 50 OHM SOLDER	0
2-5329446-1 TE Connectivity AMP Connectors	CONN BNC PLUG STR 50 OHM PUSH	255
1060891-1 TE Connectivity AMP Connectors	CONN MCX PLUG R/A 50 OHM SOLDER	54
5221111-1 TE Connectivity AMP Connectors	CONN SMB JACK STR 50 OHM PCB	821
3FA1ENMRJ-C01ER Connex (Amphenol RF)	FAKRA SEALED LOW PROFILE STRAIGH	0
VBI1094A Vitelec / Cinch Connectivity Solutions	CONN BNC JACK STR 50 OHM SOLDER	977
R41-B253K Mitsumi Electric Company	CONN HSD 4+0 REVERSE VERTICAL TY	450
M49142/03-0005 Vitelec / Cinch Connectivity Solutions	TRB CABLE PLUG, STRAIGHT, WRENCH	22
142-0711-301 Vitelec / Cinch Connectivity Solutions	CONN SMA JACK R/A 50 OHM SMD	286

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.