Coaxial Connectors (RF) - Terminators

Image Part Number Description / PDF Quantity Rfq
8018-6005

8018-6005

SV Microwave (Amphenol SV Microwave)

CONN TERMINATOR PLUG SMA 50 OHM

229

8018-6172

8018-6172

SV Microwave (Amphenol SV Microwave)

CONN TERMINATOR PLUG SMA 50 OHM

32

SF8012-6009

SF8012-6009

SV Microwave (Amphenol SV Microwave)

CONN TERMINATOR PLUG SMP 50 OHM

25

M39030/5-06N

M39030/5-06N

SV Microwave (Amphenol SV Microwave)

CONN TERMINATOR PLUG TNC 50 OHM

18

M39030/5-04N

M39030/5-04N

SV Microwave (Amphenol SV Microwave)

CONN TERMINATOR PLUG PTNC 50 OHM

0

8038-6003

8038-6003

SV Microwave (Amphenol SV Microwave)

CONN TERMINATOR PLUG SMPS 50 OHM

0

8032-4003

8032-4003

SV Microwave (Amphenol SV Microwave)

CONN TERMINATOR JACK SMPM 50 OHM

0

8032-6001

8032-6001

SV Microwave (Amphenol SV Microwave)

CONN TERMINATOR PLUG SMPM 50 OHM

0

8038-4001

8038-4001

SV Microwave (Amphenol SV Microwave)

CONN TERMINATOR JACK SMPS 50 OHM

0

8038-6004

8038-6004

SV Microwave (Amphenol SV Microwave)

CONN TERMINATOR PLUG SMPS 50 OHM

0

8032-6002

8032-6002

SV Microwave (Amphenol SV Microwave)

CONN TERMINATOR PLUG SMPM 50 OHM

0

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

TypeFunctional FeaturesApplication Examples
N-Type Terminator50 impedance, threaded coupling, weatherproof designCellular base stations, microwave systems
BNC TerminatorQuick-connect bayonet style, 50/75 optionsTest equipment, video systems
SMA TerminatorSubminiature threaded design, 0-18 GHz frequency rangeWireless communication modules, aerospace systems
TNC TerminatorThreaded BNC variant, vibration-resistantMilitary radios, mobile networks
F-Type Terminator75 screw-on design for CATV systemsCable 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

ParameterDescriptionImportance
Impedance ( )Standard 50 /75 matchingEnsures minimal signal reflection
Frequency RangeDC-18GHz for SMA, DC-11GHz for N-TypeDefines operational bandwidth
VSWR0.1-2.0:1 ratioMeasures impedance matching quality
Power Handling10W-500W average powerDetermines thermal stability
Environmental Rating-55 C to +165 C operating temp, IP67Guarantees 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

ManufacturerRepresentative ProductKey Features
Amphenol901-5066 SMA Terminator18GHz, 50 , VSWR 1.1:1
TE ConnectivityN-Term-50-12 N-TypeIP68 rated, 500W power handling
Keysight Technologies8120-0033 BNC Terminator50 precision load for lab testing
Rosenberger806 343S TNC TerminatorCorrosion-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

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