20 dB Fixed Attenuator, SMA Male to SMA Female Black Anodized Aluminum Heatsink Body Rated to 100Watts Up to 18 GHz

20 dB Fixed Attenuator, SMA Male to SMA Female Black Anodized Aluminum Heatsink Body Rated to 100Watts Up to 18 GHz

An attenuator is a circuit for introducing a predetermined attenuator over a specified frequency range. Generally, it is indicated by the decibel number of the introduced attenuator and the ohm number of its characteristic impedance. Attenuators are widely used in limited television systems to meet the level requirements of multiple ports.

Model:TRL-SMAMF-100-18-20
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20dB Fixed Attenuator SMA Male to SMA Female (100W, DC-18GHz) (TERUILAI P/N: TRL-SMAMF-100-18-20) Full Product Specification

1. Core Product Overview

This 20dB fixed RF attenuator features an SMA male to SMA female interface configuration, equipped with a black anodized aluminum heatsink body for enhanced thermal dissipation. It is rated for 100 watts of continuous power handling and supports a DC-18GHz operating frequency range. An attenuator is a circuit designed to introduce a predetermined attenuation over a specified frequency range, typically specified by its attenuation value in decibels and characteristic impedance in ohms. This product is widely used in cable television systems to meet the level requirements of multiple ports, and complies with RoHS environmental protection standards.

2. Core Product Features

2.1 High Power Handling with Efficient Heat Dissipation

  • Rated for 100 watts continuous power input, suitable for high-power RF system applications

  • Integrated black anodized aluminum heatsink provides excellent thermal conductivity and heat dissipation performance

  • Ensures stable and reliable operation even under long-term high-power load conditions

2.2 Wide High-Frequency Operating Range

  • Supports DC-18GHz ultra-wide operating frequency range, covering mainstream high-frequency RF and microwave application bands

  • Characteristic impedance of 50Ω, Voltage Standing Wave Ratio (VSWR) ≤1.35:1

  • Delivers consistent attenuation performance with minimal variation across the entire frequency range

2.3 Precise Fixed Attenuation Performance

  • Provides a stable 20dB nominal attenuation value

  • Minimizes signal distortion and ensures accurate RF signal power control

  • Ideal for applications requiring precise signal level adjustment and impedance matching

2.4 Standard SMA Interface Compatibility

  • SMA male to SMA female straight-through configuration

  • 100% compatible with all standard SMA series RF connectors and devices

  • Simplifies system integration and signal level adjustment operations

2.5 Durable & Reliable Construction

  • Durability of ≥500 mating cycles, suitable for frequent plugging and unplugging in test and maintenance scenarios

  • High-quality beryllium-copper contact pins with gold plating ensure excellent electrical conductivity and long-term stable contact performance

  • All-metal shielding structure effectively suppresses electromagnetic interference and guarantees signal integrity

RoHS Certificate: Compliant

Electrical data Requirments
Frequency range DC-18Ghz
Impedance 50Ω
Nominal Attenuator20dB
Power Input100Watt
VSWR Maximum1.35:1



Mechanical data Requirments
Durability (matings)≧500






Material data Requirments
Connector parts Material Plating
BodyBrassSuco-plated
Coupling nutBrassSuco-plated
Pin contactsBeryllium copperGold
Insulators PTFE









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