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Coaxial Connectors (RF)

Image Part Number Description / PDF Quantity Rfq
282123-75

282123-75

Connex (Amphenol RF)

1.0/2.3 STRAIGHT PCB JACK, EDGE

0
2FA1-NASP-C01E1

2FA1-NASP-C01E1

Connex (Amphenol RF)

FAKRA SEALED, STRAIGHT SINGLE PL

0
031-6502

031-6502

Connex (Amphenol RF)

CONN RPTNC PLUG STR 50OHM SOLDER

0
031-6510

031-6510

Connex (Amphenol RF)

CONN RPTNC JACK R/A 50OHM SOLDER

0
908-22103

908-22103

Connex (Amphenol RF)

CONN MMCX JACK STR 50OHM EDGEMNT

0
031-6288

031-6288

Connex (Amphenol RF)

CONN TNC JACK STR 50 OHM SOLDER

189
122412

122412

Connex (Amphenol RF)

CONN TNC JACK STR 50 OHM CRIMP

53
112253

112253

Connex (Amphenol RF)

CONN BNC JACK STR 75 OHM CRIMP

185
252117-75

252117-75

Connex (Amphenol RF)

MCX STRAIGHT PCB JACK, SURFACE M

0
925-135J-51S

925-135J-51S

Connex (Amphenol RF)

CONN SMPM JACK STR 50OHM SOLDER

68
901-10607

901-10607

Connex (Amphenol RF)

RF CONNECTOR, SMA RIGHT ANGLE CR

79
919-114J-51SX

919-114J-51SX

Connex (Amphenol RF)

CONN MCX PLUG STR 50 OHM SOLDER

22
132138

132138

Connex (Amphenol RF)

CONN SMA RCPT STR 50 OHM SOLDER

0
132253

132253

Connex (Amphenol RF)

CONN SMA JACK STR 50 OHM SOLDER

144
132194RP

132194RP

Connex (Amphenol RF)

CONN RPSMA PLUG R/A 50OHM SOLDER

250
132110

132110

Connex (Amphenol RF)

CONN SMA JACK STR 50 OHM SOLDER

0
901-10112

901-10112

Connex (Amphenol RF)

CONN SMA JACK STR 50 OHM PCB

1135
132298RP

132298RP

Connex (Amphenol RF)

CONN RPSMA PLUG STR 50OHM SOLDER

27
925-169J-51P

925-169J-51P

Connex (Amphenol RF)

CONN SMPM JACK STR 50OHM EDGEMNT

469
031-70547-12G

031-70547-12G

Connex (Amphenol RF)

CONN BNC JACK 75 OHM

55

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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