Coaxial Connectors (RF)

Part Number	Description / PDF	Quantity
PL75-LR-PC Hirose	CONN UMC RECEPT R/A 75OHM PCB	0
1408149-2 TE Connectivity AMP Connectors	CONN MMCX PLUG R/A 50 OHM SOLDER	121
132107 Connex (Amphenol RF)	CONN SMA JACK STR 50 OHM SOLDER	284
915-1001 Connex (Amphenol RF)	CONN PSMP PLUG R/A 50OHM SOLDER	65
HSD-04D-S-PRB-SG-C1-TR Adam Tech	CONN FAKRA HIGH SPEED DATA 4POS	580
142189-75 Connex (Amphenol RF)	CONN MINI SMB JACK STR 75 OHM	65
133-3711-801 Vitelec / Cinch Connectivity Solutions	CONN MCX JACK STR 50OHM EDGE MNT	253
82-97 Connex (Amphenol RF)	CONN N JACK STR 50 OHM SOLDER	104
CONREVSMA006.062 Linx Technologies	CONN RPSMA RCPT STR 50OHM EDGEMT	835
172129 Connex (Amphenol RF)	CONN N JACK STR 50 OHM CRIMP	499
119S144-40ML5 Rosenberger	CONN PSMP PLUG STR 50OHM SMD	150
0733000020 Woodhead - Molex	CONN SMPM PLUG STR 50OHM EDGEMNT	1863
083-58SP Connex (Amphenol RF)	CONN UHF PLUG STR SOLDER	43
1050770-1 TE Connectivity AMP Connectors	CONN SMA PLUG STR 50 OHM SOLDER	1329
083-58DCP-2RFX Connex (Amphenol RF)	CONN UHF PLUG STR CRIMP	85
5227726-2 TE Connectivity AMP Connectors	CONN BNC JACK STR 50 OHM SOLDER	1285
031-70538-12G Connex (Amphenol RF)	CONN BNC JACK 12G 75 OHM	167
BJ157 Vitelec / Cinch Connectivity Solutions	CONN TRS JACK STR SOLDER	1041
UG-89/U(40) Hirose	CONN BNC JACK STR 50OHM SOLDER	0
1-1337427-0 TE Connectivity AMP Connectors	CONN BNC PLUG STR 50 OHM SOLDER	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.