Coaxial Connectors (RF)

Coaxial Connectors (RF) - Terminators

Part Number	Description / PDF	Quantity
32S15R-1.0E3 Rosenberger	TERMINATOR SMA PLUG 50 OHM	107
53S15R-005N3 Rosenberger	N TYPE TERMINATOR	0
202120 Connex (Amphenol RF)	CONN TERMINATOR JACK BNC 50 OHM	94
CT3366 Cal Test Electronics	CONN TERMINATOR JACK BNC 50 OHM	0
J01444A3000 Telegärtner	4.3-10 TERM PLUG PUSH 7.5GHZ 2W	0
SF8012-6101 SV Microwave (Amphenol SV Microwave)	CONN TERMINATOR PLUG SMP 50 OHM	0
132360RP Connex (Amphenol RF)	CONN TERMINATR PLUG RP-SMA 50OHM	838
142-9003-201 Vitelec / Cinch Connectivity Solutions	SMA STRAIGHT TERMINATION	0
142197 Connex (Amphenol RF)	CONN TERMINATOR	204
VBT75 Vitelec / Cinch Connectivity Solutions	CONN TERMINATOR PLUG BNC 75OHM	4
000-46650-93RFX Connex (Amphenol RF)	CONN TERMINATOR PLUG BNC 93OHM	30
202103 Connex (Amphenol RF)	CONN TERMINATOR PLUG BNC 50OHM	4451
TNGMFL1-1-78 Vitelec / Cinch Connectivity Solutions	CONN TERMINATOR JACK TRS 78OHM	3
SF8016-6402 SV Microwave (Amphenol SV Microwave)	CONN TERMINATR JACK 2.4MM 50 OHM	0
202117 Connex (Amphenol RF)	CONN TERMINATOR PLUG TNC 50OHM	384
202110 Connex (Amphenol RF)	CONN TERMINATOR JACK N 50OHM	0
D-607-09CS764 TE Connectivity Aerospace Defense and Marine	CONN TERMINATOR	229
CT2944C-50 Cal Test Electronics	CONN TERMINATOR ADAPT BNC 50 OHM	33
5221629-2 TE Connectivity AMP Connectors	CONN TERMINATOR PLUG BNC 75OHM	0
32K15R-001E3 Rosenberger	TERMINATOR SMA JACK 50 OHM	93

Coaxial Connectors (RF) - Terminators

1. Overview

RF coaxial connector terminators are passive components designed to match the characteristic impedance of coaxial cables and systems, preventing signal reflections that cause interference and power loss. They are critical in maintaining signal integrity in high-frequency applications. These terminators absorb transmitted energy, ensuring optimal performance in RF circuits, test systems, and communication networks.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
N-Type Terminator	50 impedance, threaded coupling, weatherproof design	Cellular base stations, microwave systems
BNC Terminator	Quick-connect bayonet style, 50/75 options	Test equipment, video systems
SMA Terminator	Subminiature threaded design, 0-18 GHz frequency range	Wireless communication modules, aerospace systems
TNC Terminator	Threaded BNC variant, vibration-resistant	Military radios, mobile networks
F-Type Terminator	75 screw-on design for CATV systems	Cable TV modems, satellite receivers

3. Structure and Components

Typical terminators consist of: - Outer conductor (copper/aluminum) for shielding - Dielectric material (PTFE/ceramic) maintaining impedance - Center conductor termination resistor (precision chip) - Threaded/snap-fit coupling mechanism - Corrosion-resistant plating (nickel/gold)

4. Key Technical Specifications

Parameter	Description	Importance
Impedance ( )	Standard 50 /75 matching	Ensures minimal signal reflection
Frequency Range	DC-18GHz for SMA, DC-11GHz for N-Type	Defines operational bandwidth
VSWR	0.1-2.0:1 ratio	Measures impedance matching quality
Power Handling	10W-500W average power	Determines thermal stability
Environmental Rating	-55 C to +165 C operating temp, IP67	Guarantees reliability in harsh conditions

5. Application Fields

Telecommunications: 5G base stations, fiber optic nodes
Broadcast: TV transmission equipment, satellite systems
Test & Measurement: Spectrum analyzers, signal generators
Aerospace: Avionics, radar systems
Industrial: Medical imaging equipment (MRI), IoT devices

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Amphenol	901-5066 SMA Terminator	18GHz, 50 , VSWR 1.1:1
TE Connectivity	N-Term-50-12 N-Type	IP68 rated, 500W power handling
Keysight Technologies	8120-0033 BNC Terminator	50 precision load for lab testing
Rosenberger	806 343S TNC Terminator	Corrosion-proof, -40 C to +125 C

7. Selection Guidelines

Key considerations: - Impedance match with system (50 vs 75 ) - Frequency requirements (check cutoff points) - Environmental conditions (temperature, moisture) - Connection type (threaded vs quick-connect) - Power dissipation needs (high-power applications require larger terminators) - Industry standards (MIL-STD, IEC, EIA)

8. Industry Trends

Current developments include: - Miniaturization for 5G mmWave applications (2.4mm, 1.85mm connectors) - Enhanced thermal management for high-power 5G arrays - Standardization of 75 terminators for automotive radar (76-81GHz) - Adoption of RoHS-compliant materials (lead-free plating) - Integration with smart monitoring systems for network health diagnostics - Development of reusable terminators for lab environments