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Coaxial Connectors (RF)

Image Part Number Description / PDF Quantity Rfq
0732510250

0732510250

Woodhead - Molex

CONN SMA RCPT STR 50 OHM SOLDER

1706
0734153031

0734153031

Woodhead - Molex

CONN SMP JACK R/A 50 OHM SOLDER

149
0733300180

0733300180

Woodhead - Molex

CONN F JACK R/A 75 OHM PCB

0
0731000195

0731000195

Woodhead - Molex

CONN BNC RCPT STR 50 OHM SOLDER

76
0734152151

0734152151

Woodhead - Molex

MMCX PLUG, RA, SOLDER, .047 SR C

1000
0731010400

0731010400

Woodhead - Molex

CONN BNC RCPT R/A 75 OHM PCB

160
0732540101

0732540101

Woodhead - Molex

CONN QMA JACK STR 50 OHM CRIMP

188
0734156580

0734156580

Woodhead - Molex

CONN COAX PLUG STR SOLDER

1296
0734152202

0734152202

Woodhead - Molex

CONN TPS JACK R/A 75 OHM PCB

592
0731000030

0731000030

Woodhead - Molex

CONN N RCPT STR 50 OHM SOLDER

407
0731315013

0731315013

Woodhead - Molex

CONN BNC RCPT STR 50 OHM PCB

2836
0733910071

0733910071

Woodhead - Molex

CONN SMA RCPT STR 50 OHM PCB

300
0731385033

0731385033

Woodhead - Molex

CONN BNC RCPT R/A 50 OHM PCB

175
0732512400

0732512400

Woodhead - Molex

CONN SMA JACK R/A 50 OHM PCB

0
0731713150

0731713150

Woodhead - Molex

CONN BNC RCPT R/A 50 OHM PCB

159
0732510134

0732510134

Woodhead - Molex

CONN SMA PLUG STR 50 OHM SOLDER

471
0732510211

0732510211

Woodhead - Molex

CONN SMA PLUG R/A 50 OHM SOLDER

402
0732512123

0732512123

Woodhead - Molex

SMA JACK EDGE MNT 50 OHM .062

190
0732160103

0732160103

Woodhead - Molex

CONN TNC JACK STR 50 OHM CRIMP

387
0734151122

0734151122

Woodhead - Molex

CONN MMCX PLUG R/A 50OHM SOLDER

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

TypeFunctional FeaturesTypical Applications
BNCBayonet coupling, 50/75 impedance, quick-connectTest instruments, video systems, 10BASE-T Ethernet
N-TypeThreaded coupling, 50 , weatherproofCellular base stations, microwave links, broadcast equipment
SMAThreaded, 0-18 GHz range, compact sizeWi-Fi antennas, GPS modules, RF modules
F-TypeCompression fitting, 75 impedanceCable TV, satellite TV, CATV systems
LCMiniature threaded, low PIM designHigh-density telecom equipment, 5G infrastructure

3. Structure and Components

A typical RF coaxial connector consists of four key elements:

  1. Center Conductor: Precision-machined pin/socket (beryllium copper or phosphor bronze) for signal transmission
  2. Dielectric Insulator: PTFE or ceramic material maintaining 50/75 impedance and spacing
  3. Outer Conductor: Brass or stainless steel shell providing 360 shielding (typical attenuation >80dB)
  4. Connection Mechanism: Threaded (N, SMA), bayonet (BNC), or compression (F-type) interface with anti-rotation features

4. Key Technical Specifications

ParameterDescriptionImportance
Frequency Range0.01-110 GHz (varies by type)Determines maximum usable bandwidth
Impedance50 (standard) or 75 Matches cable/system requirements
VSWR1.2:1 (typical) - 1.5:1 (high-performance)Measures signal reflection efficiency
Insertion Loss0.1-0.5 dB (varies with frequency)Impacts signal strength preservation
Withstanding Voltage500V-3000V ACSafety 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

ManufacturerKey ProductsSpecial Features
AmphenolSeries 5000 N-TypeIP68 rating, 0-11 GHz
TE ConnectivityDeutsch DMCMilitary-grade vibration resistance
Rosenberger4.3-10 Connector70% smaller than N-Type, 6 GHz
Huber+SuhnerRadiX HybridCombines RF and power in single interface
Southern California RFMini 50High-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.

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