Coaxial Connectors (RF)

Part Number	Description / PDF	Quantity
1055688-1 TE Connectivity AMP Connectors	CONN OSMT RCPT STR 50 OHM SMD	4806
034-1026 Connex (Amphenol RF)	CONN HDBNC PLUG STR 75 OHM CRIMP	245
0732162231 Woodhead - Molex	CONN RP-TNC JACK R/A 50 OHM PCB	2105
RFT-1213-X RF Industries	TNC FEMALE BH CRIMP; 50 OHMS	255
919-423J-71P12G Connex (Amphenol RF)	MCX STRAIGHT PCB JACK, 12G OPTIM	78
66013002121501 Würth Elektronik Midcom	MMCX THT PCB PLUG, RIGHT ANGLE,	259
UM-LR-PC(41) Hirose	CONN UMC RCPT R/A 50 OHM PCB	0
5330830 TE Connectivity AMP Connectors	CONN UHF PLUG STR CRIMP	43
142184 Connex (Amphenol RF)	CONN SMB JACK R/A 50 OHM PCB	0
M39012/30-0101 SV Microwave (Amphenol SV Microwave)	CONN TNC PLUG R/A 50OHM CRIMP	276
SF1621-60059 SV Microwave (Amphenol SV Microwave)	2.4MM FEMALE SOLDERLESS PCB EDGE	36
172FPH1 Connex (Amphenol RF)	N PLUG 1/4" HELICAL	0
BNC7T-J-P-GN-ST-TH2D Samtec, Inc.	CONN BNC JACK STR 75 OHM PCB	496
0732510672 Woodhead - Molex	CONN SMA PLUG R/A 50 OHM SOLDER	329
031-80109 Connex (Amphenol RF)	CONN BNC PLUG STR 75 OHM CRIMP	129
5227699-3 TE Connectivity AMP Connectors	CONN BNC JACK STR 50 OHM PCB	3680
EZ-400-TM-RP Times Microwave Systems	CONN TNC PLUG STRAIGHT CRIMP	28
R114424000 Radiall USA, Inc.	SMB M SMT C100	433
SMP-MSCM-PCS11T Connex (Amphenol RF)	CONN SMP JACK STR SMD 50 OHM	783
2020A504-047 Winchester Electronics	CONN SMP JACK STR SOLDER	25

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.