Coaxial Connectors (RF)

Part Number	Description / PDF	Quantity
CONREVMCX005 Linx Technologies	CONN RPMCX RCPT STR 50OHM SOLDER	0
131-3693-016 Vitelec / Cinch Connectivity Solutions	CONN SMB PLUG STR 50 OHM SOLDER	250
132284RP Connex (Amphenol RF)	CONN RPSMA JACK STR 50OHM SOLDER	79
FLA.00.250.CTAC27 REDEL / LEMO	CONN NIMCAMA PLG R/A 50OHM SOLDR	13
1002-1541-010 Radiall USA, Inc.	SMC F STR SDCL .086	41
2-5227079-2 TE Connectivity AMP Connectors	CONN BNC PLUG STR 50 OHM CRIMP	381
RF55-28G-T-00-50-G-SH Adam Tech	CONN SMB PLUG PCB 50OHM SOLDER	50
0731315003 Woodhead - Molex	CONN BNC RCPT STR 50 OHM PCB	1018
CONSMB007-G Linx Technologies	CONN SMB PLUG STR 50 OHM SOLDER	1985
SF2915-6001 SV Microwave (Amphenol SV Microwave)	CONN SMA PLUG R/A 50OHM SOLDER	209
0732511150 Woodhead - Molex	CONN SMA RCPT STR 50OHM EDGE MNT	20766
RSA-3560-141 RF Industries	SMA FEMALE BH; 50 OHMS	61
FFA.00.250.NTAC22Z REDEL / LEMO	CONN NIMCAMA PLG STR 50OHM SOLDR	9
RF55-28A-T-00-50-G-SH Adam Tech	CONN SMB PLUG PCB 50OHM SOLDER	37
142-0761-891 Vitelec / Cinch Connectivity Solutions	CONN SMA JACK STR 50OHM EDGE MNT	2848
FA1-NDSJ-C01-0 Connex (Amphenol RF)	CONN FAKRA JACK STR 50 OHM CRIMP	1900
414217-1 TE Connectivity AMP Connectors	CONN BNC RCPT STR 75 OHM SOLDER	97
FAA.2S.695.CLA REDEL / LEMO	CONN TRIAX PLUG STR 95OHM SOLDER	3
3211-60028 SV Microwave (Amphenol SV Microwave)	CONN SMPM PLUG STR 50OHM SOLDER	351
2FA1-WZSP-PCBA3 Connex (Amphenol RF)	CONN FAKRA PLUG R/A 50 OHM PCB	1000

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.