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Coaxial Connectors (RF)

Image Part Number Description / PDF Quantity Rfq
031-70543-12G

031-70543-12G

Connex (Amphenol RF)

CONN BNC JACK 75OHM

396
FA1-NZSJ-C01-0

FA1-NZSJ-C01-0

Connex (Amphenol RF)

CONN FAKRA JACK STR 50 OHM CRIMP

4241
930-104P-51A

930-104P-51A

Connex (Amphenol RF)

CONN QMA PLUG R/A 50 OHM SOLDER

47
222141

222141

Connex (Amphenol RF)

CONN F JACK STR 75 OHM PCB

6546
112953

112953

Connex (Amphenol RF)

CONN BNC PLUG STR 75 OHM CRIMP

0
31-2225

31-2225

Connex (Amphenol RF)

CONN TWINAX RCPT STR 50 OHM

104
908-NM41200

908-NM41200

Connex (Amphenol RF)

CONN MMCX PLUG STR 50 OHM SOLDER

0
920-515P-51A

920-515P-51A

Connex (Amphenol RF)

HD-EFI RIGTH ANGLE PLUG, 1.13MM

100
112708

112708

Connex (Amphenol RF)

CONN BNC JACK STR 50 OHM CRIMP

0
132112

132112

Connex (Amphenol RF)

CONN SMA PLUG R/A 50 OHM SOLDER

6397
31-335-RFX

31-335-RFX

Connex (Amphenol RF)

CONN BNC PLUG R/A 50 OHM CRIMP

111
112517

112517

Connex (Amphenol RF)

CONN BNC JACK STR 50 OHM CRIMP

85
000-28175

000-28175

Connex (Amphenol RF)

CONN MHV JACK STR SOLDER

0
83-878

83-878

Connex (Amphenol RF)

CONN UHF JACK STR SOLDER

0
225-100J-52S

225-100J-52S

Connex (Amphenol RF)

RF CONNECTOR 2.2-5 STRAIGHT PANE

0
112581

112581

Connex (Amphenol RF)

CONN BNC JACK STR 50 OHM SOLDER

279
901-10661

901-10661

Connex (Amphenol RF)

RF CONNECTOR, SMA RIGHT ANGLE CR

89
112639

112639

Connex (Amphenol RF)

CONN BNC RCPT STR 50 OHM SOLDER

69
919-384J-51PT

919-384J-51PT

Connex (Amphenol RF)

CONN MCX JACK SMD 50 OHM

2143
FM4-NDRP-PCB-1

FM4-NDRP-PCB-1

Connex (Amphenol RF)

AUTOMATE MINI FAKRA QUAD PORT PC

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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