Coaxial Connectors (RF)

Part Number	Description / PDF	Quantity
142-0761-821 Vitelec / Cinch Connectivity Solutions	CONN SMA JACK STR 50OHM EDGE MNT	1950
RSA-3000-C2 RF Industries	SMA MALE CRIMP; 50 OHMS	463
CONREVSMA003.062-L Linx Technologies	CONN RPSMA RCPT STR 50OHM EDGEMT	87
172368 Connex (Amphenol RF)	CONN N JACK R/A 50OHM SOLDER	58
M39012/79-3108 SV Microwave (Amphenol SV Microwave)	CONN SMA PLUG STR 50OHM SOLDER	50
BNC-LR-PC-1(40) Hirose	CONN BNC RCPT R/A 50 OHM PCB	81
72945 Pomona Electronics	CONN SMA PLUG STR 50 OHM CRIMP	8
51K507-803N5 Rosenberger	BNC BULKHEAD JACK	0
56S207-302N5 Rosenberger	CONN TNC PLUG R/A 50OHM SOLDER	1109
UPL2000-D19/B Vitelec / Cinch Connectivity Solutions	CONN BNC PLUG STR 75 OHM 1=50	12
D4S20Y-400A5-B Rosenberger	CONN HSD FAKRA PLUG R/A 100OHM	190
332111 Connex (Amphenol RF)	CONN 4.1/9.5 JACK STR 50OHM PUSH	0
UG-88/U(40) Hirose	CONN BNC PLUG STR 50OHM SOLDER	20
CONSMA003.062-G Linx Technologies	CONN SMA RCPT STR 50OHM EDGE MNT	2736
RFN-1027-B RF Industries	N FEMALE CRIMP; 50 OHMS	1226
SF1211-66113 SV Microwave (Amphenol SV Microwave)	CONN SMP PLUG STR 50OHM SOLDER	0
3FA1-NFSJ-C04W0 Connex (Amphenol RF)	FAKRA STRAIGHT CRIMP JACK FOR RG	0
1274584-1 TE Connectivity AMP Connectors	CONN MINI BNC JACK R/A 75OHM PCB	0
HF109P-0001-0F-VE Yamaichi Electronics	AUTOMOTIVE HF109 SERIERS HSD CON	50
132267 Connex (Amphenol RF)	SMA RIGHT ANGLE JACK, SOLDER CUP	46

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.