Coaxial Connectors (RF)

Part Number	Description / PDF	Quantity
BU-1420761851 Mueller Electric Co.	CONN SMA JACK STR 50 OHM EDGE MN	9008500
BU-P3791 Mueller Electric Co.	CONN BNC PLUG STR 50 OHM CRIMP	152
BU-1420711841 Mueller Electric Co.	CONN SMA JACK STR 50 OHM EDGE MN	7088900
BU-1420701806 Mueller Electric Co.	CONN SMA JACK STR 50 OHM EDGE MN	7888900
BU-P5219 Mueller Electric Co.	CONN BNC TRIAX JACK STR 50 OHM	237699
BU-1420721881 Mueller Electric Co.	CONN SMA JACK STR 50 OHM EDGE MN	7588900
BU-1420701231 Mueller Electric Co.	CONN SMA JACK STR 50 OHM PCB	7738900
BU-1420701301 Mueller Electric Co.	CONN SMA JACK R/A 50 OHM PCB	8008900
BU-1420701801 Mueller Electric Co.	CONN SMA JACK STR. EDGE MOUNT	3085377
BU-P2451 Mueller Electric Co.	CONN BNC JACK STR 50 OHM SOLDER	121421
BU-1420761801 Mueller Electric Co.	CONN SMA JACK STR. 50 OHM EDGE M	10617451
BU-1420761881 Mueller Electric Co.	CONN SMA JACK STR. 50 OHM EDGE M	6588167
BU-1420761811 Mueller Electric Co.	CONN SMA JACK STR. 50 OHM EDGE M	6838663
BU-1420701871 Mueller Electric Co.	CONN SMA JACK STR 50 OHM EDGE MN	7968900
BU-1420711201 Mueller Electric Co.	CONN SMA JACK STR 50 OHM SMD	6708900
BU-1420771831 Mueller Electric Co.	CONN SMA JACK STR 50 OHM EDGE MN	6998900
BU-1420701491 Mueller Electric Co.	CONN SMA JACK STR 50 OHM PCB	7898900
BU-1420801811 Mueller Electric Co.	CONN SMA PLUG STR 50 OHM EDGE MN	8008900
BU-1420701211 Mueller Electric Co.	CONN SMA JACK STR. 50 OHM EDGE M	5888663
BU-1420701841 Mueller Electric Co.	CONN SMA JACK STR. 50 OHM EDGE M	9477497

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.