Coaxial Connectors (RF)

Coaxial Connectors (RF) - Adapters

Part Number	Description / PDF	Quantity
TEBC-1008-LF Vitelec / Cinch Connectivity Solutions	MIL-STD-1553 DATA BUS COUPLER, 8	10
J3W Vitelec / Cinch Connectivity Solutions	CONN ADAPT BNC JACK TO WECO JACK	151
127-0901-811 Vitelec / Cinch Connectivity Solutions	CONN ADAPT JACK-JACK SMP 50 OHM	33
134-1000-003 Vitelec / Cinch Connectivity Solutions	ADAPTER 2.92MM PLUG TO SMP PLUG	19
ADT-2595-FF-SMA-02 Vitelec / Cinch Connectivity Solutions	CONN ADAPT JACK-JACK SMA 50 OHM	13
142-1901-831 Vitelec / Cinch Connectivity Solutions	SMA, IN SERIES, JACK TO QUICK CO	457
ADBJ20-E1-PL375 Vitelec / Cinch Connectivity Solutions	CONN ADAPT BNC JACK TO TRT PLUG	44
ADT-2594-MM-SMA-02 Vitelec / Cinch Connectivity Solutions	CONN ADAPT PLUG-PLUG SMA 50 OHM	17
CPAD580 Vitelec / Cinch Connectivity Solutions	CONN ADAPT JACK-JACK BNC 50 OHM	36
ADPL75-A1-PL75 Vitelec / Cinch Connectivity Solutions	CONN ADAPT PLG-PLG TRB TWIN/TRI	25
134-1000-009 Vitelec / Cinch Connectivity Solutions	ADAPTER 2.4MM JACK - 2.92MM PLUG	21
UADRMF220 Vitelec / Cinch Connectivity Solutions	CONN ADAPT JACK TO PLUG BNC	100
147-0901-801 Vitelec / Cinch Connectivity Solutions	ADAPTER 2.4MM PLUG TO JACK	15
VBA108 Vitelec / Cinch Connectivity Solutions	CONN ADAPT PLUG-PLUG BNC 50 OHM	0
VNA515 Vitelec / Cinch Connectivity Solutions	CONN ADAPT JACK-JACK N 50 OHM	83
142-0901-406 Vitelec / Cinch Connectivity Solutions	CONN ADAPT JACK-JACK SMA 50 OHM	18
134-1000-018 Vitelec / Cinch Connectivity Solutions	ADAPTER 1.85MM PLUG-2.4MM JACK	19
BJ78HS Vitelec / Cinch Connectivity Solutions	CONN ADAPT JCK-JCK TRB TWIN/TRI	51
134-1000-017 Vitelec / Cinch Connectivity Solutions	ADAPTER 1.85MM JACK-2.4MM PLUG	14
ADT-2688-TF-SMF-02 Vitelec / Cinch Connectivity Solutions	CONN ADAPT TNC JACK TO SMA JACK	0

Coaxial Connectors (RF) - Adapters

1. Overview

RF coaxial connector adapters are passive devices enabling seamless interface between different coaxial connector types or configurations. They maintain signal integrity in radio frequency (RF) systems by ensuring impedance matching and minimizing signal reflection. These adapters play a critical role in telecommunications, test equipment, aerospace, and industrial applications where reliable RF transmission is required.

2. Main Types and Functional Classification

Type	Function Features	Application Examples
BNC Adapters	Bayonet coupling, quick-connect, 50/75 variants, up to 4 GHz	Test instruments, CCTV systems
N-Type Adapters	Threaded coupling, weatherproof, 0-11 GHz, 50	Cellular base stations, microwave links
SMA Adapters	Threaded, compact, 0-18 GHz, 50	WiFi antennas, RF modules
F-Type Adapters	Compression fittings, 75 , CATV compatible	Cable TV splitters, satellite receivers
TNC Adapters	Threaded BNC variant, vibration-resistant	Military communication systems

3. Structure and Components

Typical physical construction includes:

Center conductor: Precision-machined brass or beryllium copper with gold plating
Dielectric insulator: PTFE or ceramic material maintaining precise spacing
Outer conductor/shield: Brass or stainless steel with nickel plating
Interface mechanism: Threaded (N, SMA), bayonet (BNC), or compression (F-type)

Advanced designs incorporate EMI shielding, environmental sealing (IP68), and low-PIM (Passive Intermodulation) materials.

4. Key Technical Specifications

Parameter	Typical Range	Importance
Frequency Range	DC-40 GHz (varies by type)	Determines application suitability
Impedance	50 or 75	Matching critical for VSWR
VSWR	1.1:1-1.5:1	Measures signal reflection
Insertion Loss	0.1-0.5 dB	Impacts signal strength
Durability	500-5000 mating cycles	Affects long-term reliability

5. Application Areas

Telecommunications: 5G base stations, fiber-wireless systems
Test & Measurement: Spectrum analyzers, signal generators
Aerospace: Avionics, satellite communication systems
Industrial: RFID readers, IoT gateways
Consumer: Set-top boxes, home networking equipment

6. Leading Manufacturers and Products

Manufacturer	Representative Products
Amphenol RF	QN Series quick-connect adapters
TE Connectivity	Deutsch N-Type aerospace adapters
Rosenberger	8GHz SMA calibration kits
Keysight Technologies	3.5mm precision test adapters
ITT Cannon	SL Series space-grade connectors

7. Selection Guidelines

Key considerations:

Match impedance (50 for data/telecom, 75 for video)
Verify frequency requirements (10% headroom recommended)
Assess environmental needs (IP rating, temperature range)
Evaluate mechanical requirements (mating cycles, vibration)
Check industry certifications (MIL-STD, RoHS, REACH)

Example: Selecting N-type female-to-SMA male adapter for 3.5GHz outdoor link requires IP67 rating and <1.3:1 VSWR.

8. Industry Trends

Miniaturization: Development of 1.0/2.3mm connectors for 5G mmWave
Higher frequencies: Adapters supporting 40+GHz for automotive radar
Material innovation: Use of beryllium-free alloys for safety
Smart connectivity: Integrated sensors for condition monitoring
Environmental focus: Lead-free plating and recyclable materials