{"product_id":"new-1-pcs-avc-fan-df04056b12u-dc12v-1-88a-40-40-56mm-5-pin-8-wire-server-fan","title":"AVC DF04056B12U 40x40x56mm DC12V 1.88A 5-Pin Server Cooling Fan","description":"\u003cdiv class=\"koeed-container\" style=\"width: 100%; box-sizing: border-box; padding: 0; margin: 0; color: #333333; line-height: 1.6;\"\u003e\n\n  \u003c!-- SECTION 1: Engineer's Quick Brief --\u003e\n  \u003ch2\u003eEngineer's Quick Brief\u003c\/h2\u003e\n  \u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 24px;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUltra-High Static Pressure:\u003c\/strong\u003e Engineered in a 40x40x56mm dual-rotor counter-rotating architecture, delivering massive static pressure to overcome intense airflow resistance in dense 1U server chassis.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIndustrial Power Profile:\u003c\/strong\u003e Operates at 12V DC with a continuous current rating of 1.88A, producing a powerful 22.56W output designed for mission-critical enterprise hardware deployment.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEnterprise-Grade Longevity:\u003c\/strong\u003e Built with high-precision dual ball bearings and a smart 5-pin PWM feedback interface to ensure stable 24\/7 continuous operation in data centers, telecom racks, and industrial cooling environments.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- SECTION 2: SEO Introduction --\u003e\n  \u003ch2\u003eAVC DF04056B12U 4056 Server Cooling Fan Overview\u003c\/h2\u003e\n  \u003cp style=\"margin-bottom: 24px;\"\u003e\n    The \u003cstrong\u003eAVC DF04056B12U\u003c\/strong\u003e is an industrial-grade, heavy-duty \u003cstrong\u003e40x40x56mm server cooling fan\u003c\/strong\u003e specifically optimized for high-density network switches, blades, and 1U enterprise server enclosures. Driven by a robust \u003cstrong\u003e12V DC\u003c\/strong\u003e internal motor drawing up to \u003cstrong\u003e1.88A\u003c\/strong\u003e of current, this compact cooling powerhouse generates a formidable \u003cstrong\u003e22.56W\u003c\/strong\u003e output. Featuring an advanced \u003cstrong\u003e5-pin connector interface\u003c\/strong\u003e, the fan integrates native pulse-width modulation (PWM) speed controls along with dedicated tachometer speed sensors. Its premium \u003cstrong\u003edual ball bearing\u003c\/strong\u003e core guarantees minimal rotational friction and maximized thermal resistance, preventing airflow failure across demanding structural computing applications.\n  \u003c\/p\u003e\n\n  \u003c!-- SECTION 3: Technical Specifications --\u003e\n  \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n    \u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #eeeeee; min-width: 600px;\"\u003e\n      \u003cthead\u003e\n        \u003ctr style=\"background-color: #16c8c8; color: #ffffff;\"\u003e\n          \u003cth style=\"padding: 12px; text-align: left; border: 1px solid #eeeeee;\"\u003eSpecification Parameter Category\u003c\/th\u003e\n          \u003cth style=\"padding: 12px; text-align: left; border: 1px solid #eeeeee;\"\u003eDetailed Operational Data Values\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eBrand \/ Manufacturer\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eAsia Vital Components (AVC)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eModel Part Number\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eDF04056B12U\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e40mm × 40mm × 56mm (Standard 4056 Form Factor)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eRated Input Voltage\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e12V DC (Operational safety envelope: 10.8V - 13.2V DC)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eRated Continuous Current\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e1.88 Amps (Maximum steady state)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eTotal Power Consumption\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e22.56 Watts\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eBearing Core Infrastructure\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eHigh-Precision Precision Dual Ball Bearings\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eTermination Interface Block\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e5-Pin Server-Specific Pitch Header Connector\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eControl Signal Configurations\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003ePWM Speed Adjustment Loop, TACH \/ Frequency Generator Sensor Line\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eHousing Structure Material\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eUL 94V-0 Rated Reinforced Thermoplastic PBT Protective Frame\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 4: Application Matrix --\u003e\n  \u003ch2\u003eIndustrial Application Matrix\u003c\/h2\u003e\n  \u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n    \u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #eeeeee; min-width: 600px;\"\u003e\n      \u003cthead\u003e\n        \u003ctr style=\"background-color: #0056B3; color: #ffffff;\"\u003e\n          \u003cth style=\"padding: 12px; text-align: left; border: 1px solid #eeeeee;\"\u003eTarget Deployment Field\u003c\/th\u003e\n          \u003cth style=\"padding: 12px; text-align: left; border: 1px solid #eeeeee;\"\u003eSpecific Enclosure Setup\u003c\/th\u003e\n          \u003cth style=\"padding: 12px; text-align: left; border: 1px solid #eeeeee;\"\u003eSystem Engineering Value Realized\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eData Center Infrastructure\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e1U Rackmount Servers \u0026amp; Blade Modules\u003c\/td\u003e\n          \u003ctd\u003eDelivers localized, extreme air velocity to pull core heat out of densely packed multi-core processor blocks.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eTelecommunications\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eCore Managed Core Switches \u0026amp; Routers\u003c\/td\u003e\n          \u003ctd\u003eMaintains steady operations within restricted vertical line spaces under continuous high-backpressure environments.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eIndustrial Automation\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eEnclosed CNC Cabinets \u0026amp; PLC Racks\u003c\/td\u003e\n          \u003ctd\u003eProtects sensitive electronic components against hot-spot stagnation loops via continuous air circulation patterns.\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SECTION 5: Koeed B2B Tool --\u003e\n  \u003ch2\u003eKoeed Field FAE Tool: Server Fan Power \u0026amp; Array Safety Calculator\u003c\/h2\u003e\n  \u003cp style=\"margin-bottom: 16px;\"\u003eBecause the AVC DF04056B12U draws a substantial 1.88A current, connecting multiple units to a single power rail or header can cause terminal melting or motherboard controller damage. Use this tool to calculate circuit loads and estimate thermal airflow thresholds.\u003c\/p\u003e\n  \n  \u003cdiv class=\"koeed-tool-box\" style=\"background-color: #fafafa; border: 1px solid #16c8c8; border-radius: 4px; padding: 20px; margin-bottom: 24px;\"\u003e\n    \u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 16px;\"\u003e\n      \u003cdiv\u003e\n        \u003clabel style=\"display: block; font-weight: bold; margin-bottom: 6px;\"\u003eNumber of Fans in Array:\u003c\/label\u003e\n        \u003cinput type=\"number\" id=\"koeed-fan-count\" value=\"4\" min=\"1\" max=\"24\" style=\"width: 100%; padding: 8px; border: 1px solid #cccccc; border-radius: 4px; box-sizing: border-box;\" oninput=\"koeedCalculateFanCircuit()\"\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003clabel style=\"display: block; font-weight: bold; margin-bottom: 6px;\"\u003eTarget Supply Voltage (V DC):\u003c\/label\u003e\n        \u003cinput type=\"number\" id=\"koeed-fan-volts\" value=\"12\" min=\"10\" max=\"14\" step=\"0.1\" style=\"width: 100%; padding: 8px; border: 1px solid #cccccc; border-radius: 4px; box-sizing: border-box;\" oninput=\"koeedCalculateFanCircuit()\"\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003clabel style=\"display: block; font-weight: bold; margin-bottom: 6px;\"\u003eHeader Safety Limit (Amps):\u003c\/label\u003e\n        \u003cselect id=\"koeed-header-limit\" style=\"width: 100%; padding: 8px; border: 1px solid #cccccc; border-radius: 4px; background-color: #ffffff;\" onchange=\"koeedCalculateFanCircuit()\"\u003e\n          \u003coption value=\"1.0\"\u003eStandard PC Header (1.0A)\u003c\/option\u003e\n          \u003cli\u003e\u003coption value=\"3.0\"\u003eHigh-Amp Fan Header (3.0A)\u003c\/option\u003e\u003c\/li\u003e\n          \u003coption value=\"10.0\" selected\u003eDedicated Server Bus Rail (10.0A)\u003c\/option\u003e\n        \u003c\/select\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background-color: #ffffff; border-left: 4px solid #16c8c8; padding: 14px; border-radius: 0 4px 4px 0;\"\u003e\n      \u003cp style=\"margin: 0; font-weight: bold;\"\u003eTotal Array Continuous Current: \u003cspan id=\"koeed-calc-total-amps\" style=\"color: #0056B3;\"\u003e7.52\u003c\/span\u003e A\u003c\/p\u003e\n      \u003cp style=\"margin: 4px 0 0 0; font-weight: bold;\"\u003eTotal Array Power Consumption: \u003cspan id=\"koeed-calc-total-watts\" style=\"color: #16c8c8;\"\u003e90.24\u003c\/span\u003e W\u003c\/p\u003e\n      \u003cp style=\"margin: 8px 0 0 0; font-weight: bold; font-size: 1.05em;\"\u003eCircuit Safety Verification: \u003cspan id=\"koeed-calc-safety-status\" style=\"color: green; font-weight: bold;\"\u003eSAFE CONFIGURATION\u003c\/span\u003e\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cnoscript\u003e\n    \u003cdiv style=\"background-color: #fff3cd; color: #856404; padding: 12px; border: 1px solid #ffeeba; border-radius: 4px; margin-bottom: 24px;\"\u003e\n      \u003cstrong\u003eNotice:\u003c\/strong\u003e This landing interface utilizes a live reactive electrical sizing evaluation array. Please enable JavaScript configurations to activate on-site engineering calculation modules.\n    \u003c\/div\u003e\n  \u003c\/noscript\u003e\n\n  \u003cscript\u003e\n    function koeedCalculateFanCircuit() {\n      var count = parseInt(document.getElementById('koeed-fan-count').value) || 1;\n      var volts = parseFloat(document.getElementById('koeed-fan-volts').value) || 12.0;\n      var limit = parseFloat(document.getElementById('koeed-header-limit').value) || 1.0;\n\n      var baseCurrent = 1.88; \n      \/\/ Scale current slightly based on voltage variance from nominal 12V\n      var actualCurrentPerFan = baseCurrent * (volts \/ 12.0);\n      var totalAmps = actualCurrentPerFan * count;\n      var totalWatts = volts * totalAmps;\n\n      document.getElementById('koeed-calc-total-amps').innerText = totalAmps.toFixed(2);\n      document.getElementById('koeed-calc-total-watts').innerText = totalWatts.toFixed(2);\n\n      var statusSpan = document.getElementById('koeed-calc-safety-status');\n      if (totalAmps \u003c= limit) {\n        statusSpan.innerText = \"SAFE CONFIGURATION: Current draw is within specified terminal limits.\";\n        statusSpan.style.color = \"green\";\n      } else {\n        statusSpan.innerText = \"CRITICAL OVERLOAD: Array exceeds header capacity! Use external direct bus distribution blocks.\";\n        statusSpan.style.color = \"#dc3545\";\n      }\n    }\n    window.addEventListener('DOMContentLoaded', function() {\n      koeedCalculateFanCircuit();\n    });\n  \u003c\/script\u003e\n\n  \u003c!-- SECTION 6: Troubleshooting \u0026 FAQ --\u003e\n  \u003ch2\u003eField Commissioning \u0026amp; Installation Maintenance Guide\u003c\/h2\u003e\n  \n  \u003ch3\u003eQ: What are the terminal identification patterns for the AVC 5-pin custom interface?\u003c\/h3\u003e\n  \u003cp style=\"margin-bottom: 12px;\"\u003e\n    Industrial 5-pin server fan alignments typically differ from standard consumer 4-pin blocks to accommodate enterprise motherboard hot-swap channels. While exact wiring distributions can vary depending on proprietary server brand configurations (such as Dell or HP terminal standards), the standard functional pinout mappings for high-performance AVC modules follow this sequence:\n  \u003c\/p\u003e\n  \u003cul style=\"padding-left: 20px; margin-bottom: 16px;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePin 1 (GND):\u003c\/strong\u003e Main ground connection return line (typically represented by a solid Black conductor insulation).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePin 2 (VCC \/ +12V):\u003c\/strong\u003e Main power distribution feed terminal (typically solid Red or Yellow conductor insulation).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePin 3 (TACH \/ Sensor):\u003c\/strong\u003e Tachometer output channel which outputs a clean square wave signal matching physical rotation speeds (typically White or Blue wire line).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePin 4 (PWM \/ Control):\u003c\/strong\u003e Input node for pulse width modulation speed parameters driven by the controller board (typically green insulation tracking wire).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePin 5 (Presence \/ Link):\u003c\/strong\u003e Hardware link confirmation node tied down to frame ground, informing system monitors that the module is locked in position.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eQ: Why does the fan spin at full speed immediately upon connection and ignore PWM commands?\u003c\/h3\u003e\n  \u003cp style=\"margin-bottom: 12px;\"\u003ePersistent full-speed operation generally stems from signal continuity interruptions or mismatched control logic configurations. Follow this diagnostic sequence:\u003c\/p\u003e\n  \u003col style=\"padding-left: 20px; margin-bottom: 16px;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCheck Control Line Impedance:\u003c\/strong\u003e Ensure that Pin 4 (PWM Control Line) is securely mated inside your wiring block. If the PWM terminal is disconnected, the fan interprets the open circuit as a fallback command to run at 100% capacity to protect system hardware.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVerify Control Frequency:\u003c\/strong\u003e Confirm that your motherboard control algorithm generates a standard open-drain PWM signal operating within the \u003cstrong\u003e21 kHz to 28 kHz range\u003c\/strong\u003e. Deviations in control frequency can cause internal drive ICs to reject the logic signals.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTest Input Supply Voltages:\u003c\/strong\u003e Ensure input voltage parameters do not exceed 13.2V DC. Voltage levels beyond this limit can push the internal drive controls into automated protection states.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003ch3\u003eQ: How can ball-bearing degradation be identified during maintenance tracking routines?\u003c\/h3\u003e\n  \u003cp style=\"margin-bottom: 12px;\"\u003e\n    The premium dual ball bearing design minimizes failure vectors, but continuous exposure to high dust volumes can eventually degrade internal surfaces. Monitor system log trends for sudden drops in the TACH output line under a constant PWM duty cycle, or check for localized vibration patterns across the chassis housing. If loud buzzing or rattling noises occur during operation, swap out the unit to prevent cooling drop-offs.\n  \u003c\/p\u003e\n\n  \u003c!-- SECTION 7: Cross-Reference \u0026 Selection --\u003e\n  \u003ch3\u003eCross-Reference Guide\u003c\/h3\u003e\n  \u003cp style=\"margin-bottom: 16px;\"\u003eThe AVC DF04056B12U configuration shares physical dimensions and operational parameters with these alternative industrial cooling units:\u003c\/p\u003e\n  \u003cul style=\"list-style-type: square; padding-left: 20px; margin-bottom: 24px;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDelta Electronics Equivalent:\u003c\/strong\u003e GFB0412EHS \/ FFB0412UHN Series (Verify exact pin alignment layouts on the 5-pin terminal blocks before hot-swapping configurations).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSanyo Denki San Ace Alternative:\u003c\/strong\u003e 9GA0412P3G01 \/ 9GV0412P3G03 Series (High static pressure 4056 equivalents; verify total continuous current draws to ensure power rail compatibility).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNidec UltraFlo Match:\u003c\/strong\u003e V40W12BS1AZ-50 Series (Industrial 40x40x56mm high-volume server fan profile variants built with matching PWM control logic inputs).\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003c!-- STRUCTURED DATA: JSON-LD FOR AI SEARCH ENGINE HARVESTING --\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"FAQPage\",\n      \"mainEntity\": [\n        {\n          \"@type\": \"Question\",\n          \"name\": \"What are the terminal identification patterns for the AVC 5-pin custom interface?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"The custom 5-pin distribution generally allocates connections for Ground, +12V Power Feed, Tachometer output feedback, PWM speed logic tracking input, and an integrated Presence\/Detection jumper line that identifies module seat positioning inside enterprise server backplanes.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Why does the fan spin at full speed immediately upon connection and ignore PWM commands?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Full-speed operation typically occurs if the PWM control wire line is loose or broken, creating an open circuit condition. It can also point to a control logic frequency mismatch that falls outside the standard 21 kHz to 28 kHz industrial target window required by the internal IC controller.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"How can ball-bearing degradation be identified during maintenance tracking routines?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Degradation is typically signaled by unexpected speed deviations recorded on the TACH system monitor logs under constant PWM parameters, increased structural housing vibration, or high-pitched frictional noise emanating from the dual-ball support tracks.\"\n          }\n        }\n      ]\n    },\n    {\n      \"@type\": \"WebApplication\",\n      \"name\": \"Server Fan Power \u0026 Array Safety Calculator\",\n      \"applicationCategory\": \"BusinessApplication\",\n      \"operatingSystem\": \"All\",\n      \"browserRequirements\": \"Requires modern HTML5 web browsing architecture with active JavaScript engine processing blocks.\",\n      \"description\": \"An interactive utility designed for system engineers to evaluate combined current and power loads across multi-fan server cooling configurations and verify overall power rail safety limits.\"\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"AVC","offers":[{"title":"Default Title","offer_id":44506265813177,"sku":"255474301960","price":17.28,"currency_code":"USD","in_stock":true}],"url":"https:\/\/koeed.com\/pt\/products\/new-1-pcs-avc-fan-df04056b12u-dc12v-1-88a-40-40-56mm-5-pin-8-wire-server-fan","provider":"KOEED","version":"1.0","type":"link"}