Coaxial Connectors (RF)

Part Number	Description / PDF	Quantity
32S422-500S5 Rosenberger	CONN SMA PLUG STR 50OHM SOLDER	25
1285-6004 SV Microwave (Amphenol SV Microwave)	CONN SMP PLUG STR 50OHM EDGEMNT	4
930-128J-51P Connex (Amphenol RF)	CONN QMA JACK R/A 50 OHM PCB	0
908-NM43300 Connex (Amphenol RF)	CONN MMCX PLUG R/A 50 OHM SOLDER	458
2002-1571-119 Radiall USA, Inc.	SMB F STR NA CR	25
MM7829-2700RK20 TOKO / Murata	LSC	19510
0732510930 Woodhead - Molex	CONN SMA JACK STR 50 OHM SOLDER	1062
172210 Connex (Amphenol RF)	CONN N RCPT STR 50 OHM SOLDER	87
RFB-1107-7 RF Industries	BNC MALE CRIMP; 50 OHMS	16
SBC7731A Winchester Electronics	CONN BNC PLUG STR 75 OHM CRIMP	15
RSA-3000-1C RF Industries	SMA MALE CRIMP; 50 OHMS	0
RF2-06A-T-21-50-G Adam Tech	RF SMA CONNECTOR	0
FAN.00.250.CLA REDEL / LEMO	CONN NIMCAMA PLG STR 50OHM SOLDR	30
SF3311-60014-2S SV Microwave (Amphenol SV Microwave)	1.85MM MALE SOLDERLESS PCB COMPR	18
122125 Connex (Amphenol RF)	CONN TNC JACK STR 75 OHM CRIMP	21
FFA.00.250.CTAC22 REDEL / LEMO	CONN NIMCAMA PLG STR 50OHM SOLDR	268
CBJ3157 Vitelec / Cinch Connectivity Solutions	CONN TTM JACK STR PCB	95
901-2PF100000AE Connex (Amphenol RF)	RF CONNECTOR, SMA JACK PANEL MOU	92
51S107-801N5 Rosenberger	CONN BNC PLUG STR 50OHM CRIMP	6
031-6003-RFX Connex (Amphenol RF)	CONN TNC PLUG R/A 50 OHM SOLDER	9

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.