{"product_id":"voltage-controlled-rf-attenuator-module-10mhz-4ghz-25db-low-swr","title":"Voltage Controlled RF Attenuator Module 10MHz–4GHz –25dB","description":"\n\u003ch2\u003eVoltage Controlled RF Attenuator Module — Precision Signal Control from 10MHz to 4GHz\u003c\/h2\u003e\n\u003cp\u003eTake precise control of your RF signal strength with this voltage-controlled RF attenuator module. Covering a wide frequency range of \u003cstrong\u003e10MHz to 4GHz\u003c\/strong\u003e, this PCB-based module delivers accurate, repeatable attenuation for demanding applications including 5G development, radar systems, satellite communications, and general RF lab work. With a smooth \u003cstrong\u003e–3dB step accuracy\u003c\/strong\u003e and an effective adjustment range up to \u003cstrong\u003e–25dB\u003c\/strong\u003e (extendable to approximately –40dB where flatness is less critical), it gives engineers and hobbyists alike the fine-tuned control they need.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Frequency Coverage:\u003c\/strong\u003e Operates from 10MHz to 4GHz — ideal for 5G, radar, satellite, and wideband RF systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecise Attenuation:\u003c\/strong\u003e –3dB step accuracy with a total adjustment range of –25dB (up to –40dB with relaxed flatness requirements).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Control:\u003c\/strong\u003e Control voltage range of 1–17V (max 20V); intuitive analog control for seamless integration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Power Supply:\u003c\/strong\u003e Compatible with +3V or +5V single supply at just 5mA — low power consumption for portable and embedded designs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Power Signal Handling:\u003c\/strong\u003e Accepts up to 20dBm RF input power with distortion-free performance, maintaining system linearity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow SWR:\u003c\/strong\u003e Minimizes signal reflections for clean, efficient signal transmission.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard SMA Interface:\u003c\/strong\u003e SMA female connectors for easy integration into existing RF setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact PCB Form Factor:\u003c\/strong\u003e Lightweight and easy to mount in enclosures, test benches, or custom RF assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBandwidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10MHz – 4GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 – 5V (max 12V)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 – 17V (max 20V)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax RF Input Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdjustment Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e–25dB to –3dB (up to ~–40dB, flatness dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStep Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e–3dB per step\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSMA Female Connector\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Draw\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5mA (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Voltage Controlled RF Attenuator Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Only the item listed above is included. Colors may vary slightly due to lighting and display differences. Measurement tolerance: ±1–3cm.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-wooden-handle-nylon-bristle-paint-brush-for-oil-painting-dusting-and-cleaning-unrechargeable-hand-tool-set-without-batt-2\"\u003e10Pcs Wooden Handle Nylon Bristle Paint Brush – Hand Tool Set\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-precision-japanese-double-edged-hand-saw-sk5-steel-fine-toothed-for-carpentry-and-gardening-6-inch-blade-portable-mini-1\"\u003e1pc Precision Japanese Double-Edged Hand Saw – SK5 Steel\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-manual-household-yarn-winding-machine-twisting-and-weaving-tools-diy-sewing-accessories-yarn-ball-winder-2\"\u003e1PC Manual Household Yarn Winding Machine – DIY Accessories\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What frequency range does this RF attenuator module support?\u003c\/h4\u003e\n\u003cp\u003eA: This voltage controlled RF attenuator module covers a frequency range of \u003cstrong\u003e10MHz to 4GHz\u003c\/strong\u003e, making it suitable for a broad range of RF applications including 5G development, radar testing, satellite communication systems, and general wideband RF work.\u003c\/p\u003e\n\u003ch4\u003eQ: How is the attenuation level controlled on this module?\u003c\/h4\u003e\n\u003cp\u003eA: Attenuation is adjusted by varying the control voltage, which operates between 1V and 17V (with an absolute maximum of 20V). As the control voltage changes, the module smoothly adjusts signal attenuation in –3dB steps across the adjustment range of –25dB to –3dB, or up to approximately –40dB where signal flatness is less critical.\u003c\/p\u003e\n\u003ch4\u003eQ: What power supply does this RF attenuator module require?\u003c\/h4\u003e\n\u003cp\u003eA: The module supports a wide power supply input of +3V to +5V (single supply), drawing only 5mA of current. The supply voltage must not exceed 12V. This low-power design makes it ideal for battery-powered, portable, or embedded RF system designs.\u003c\/p\u003e\n\u003ch4\u003eQ: What connector type is used on this attenuator module?\u003c\/h4\u003e\n\u003cp\u003eA: The module uses standard \u003cstrong\u003eSMA female connectors\u003c\/strong\u003e, which are compatible with most RF test equipment, coaxial cables, and development platforms, making integration into existing setups straightforward.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What frequency range does this RF attenuator module support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This voltage controlled RF attenuator module covers a frequency range of 10MHz to 4GHz, making it suitable for a broad range of RF applications including 5G development, radar testing, satellite communication systems, and general wideband RF work.\"}}, {\"@type\": \"Question\", \"name\": \"How is the attenuation level controlled on this module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Attenuation is adjusted by varying the control voltage, which operates between 1V and 17V (with an absolute maximum of 20V). 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