Coaxial Connectors (RF)

Part Number	Description / PDF	Quantity
MM7829-2700RK20 TOKO / Murata	LSC	19510
MM5829-2700RJ4 TOKO / Murata	CONN JSC RCPT STR 50 OHM SMD	34376
MM8430-2610RA1 TOKO / Murata	CONN SWD RCPT STR 50 OHM SMD	3449
MM8830-2600RJ4 TOKO / Murata	COAX CONN	0
MM5831-2700RJ4 TOKO / Murata	MICROWAVE COAXIAL CONNECTOR RECE	0
MM4829-2702RA4 TOKO / Murata	CONN HSC RCPT STR 50 OHM SMD	45529
MM8930-2620RJ4 TOKO / Murata	COAX CONN	0
MM8930-2620RK15 TOKO / Murata	COAX CONN	0
MM4831-2701RJ4 TOKO / Murata	HSC	1450
MM5831-2700RK15 TOKO / Murata	COAX CONN	0
MM4829-2702RB0 TOKO / Murata	CONN HSC RCPT STR 50 OHM SMD	39943
MM8130-2600RB8 TOKO / Murata	CONN SWF RCPT STR 50 OHM SMD	0
MM8430-2610RB3 TOKO / Murata	CONN SWD RCPT STR 50 OHM SMD	10423
MM8130-2600RA2 TOKO / Murata	CONN SWF RCPT STR 50 OHM SMD	31120
MM7829-2700RJ5 TOKO / Murata	LSC	8643
MM4831-2701RK15 TOKO / Murata	COAX CONN	0
MM5829-2700RK0 TOKO / Murata	CONN JSC RCPT STR 50 OHM SMD	11758
MM8930-2600RK0 TOKO / Murata	RF CONNECTORS / COAXIAL CONNECTO	0
MM8030-2610RJ3 TOKO / Murata	CONN SWG RCPT STR 50 OHM SMD	188427
MM8830-2600RK15 TOKO / Murata	COAX CONN	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.