{"product_id":"sensdar-sd1225l1b-12025-dc12v-0-30a-12cm-3-wire-cooling-fan","title":"SENSDAR SD1225L1B 12025 DC12V 0.30A 12CM 3-Wire 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\u003eIndustrial Dual Ball Configuration:\u003c\/strong\u003e Outfitted with high-precision dual ball bearings, guaranteeing continuous 24\/7 rotational longevity and multi-angle installation stability.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOptimized Electrical Efficiency:\u003c\/strong\u003e Operates on standard 12V DC drawing 0.30A, delivering a balanced 3.6W thermal extraction matrix without taxing auxiliary control power lines.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated TACH Feedback:\u003c\/strong\u003e Outfitted with a 3-wire interface containing a dedicated speed detection output (Tachometer\/FG signal) for real-time PLC or controller hardware monitoring loop integration.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- SECTION 2: SEO Introduction --\u003e\n  \u003ch2\u003eSENSDAR SD1225L1B 12025 DC 12V Cooling Fan Overview\u003c\/h2\u003e\n  \u003cp style=\"margin-bottom: 24px;\"\u003e\n    The \u003cstrong\u003eSENSDAR SD1225L1B\u003c\/strong\u003e is a heavy-duty, industrial-grade \u003cstrong\u003e120mm × 120mm × 25mm\u003c\/strong\u003e (12025) DC axial cooling fan designed to deliver consistent volumetric air exchange inside modern electrical enclosures. Engineered to operate on a stable \u003cstrong\u003eDC 12V\u003c\/strong\u003e power framework, this fan maintains an efficient operational profile with a rated continuous current draw of \u003cstrong\u003e0.30A\u003c\/strong\u003e. Encased in a rigid, UL 94V-0 rated PBT composite frame, the SD1225L1B employs premium \u003cstrong\u003edual ball bearings\u003c\/strong\u003e to maximize mechanical endurance under harsh ambient temperatures. Featuring a functional \u003cstrong\u003e3-wire termination layout\u003c\/strong\u003e, it delivers integrated tachometer feedback crucial for system automation fail-safes across server racks, power supplies, and control cabinets.\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 Technical Value Range\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\u003eSENSDAR (三达电子)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eModel Catalog Number\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eSD1225L1B\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eFrame Profile Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e120mm × 120mm × 25mm (Standard 12CM Layout)\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\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\u003e0.30 Amps\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eTotal Rated Power Consumption\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e3.6 Watts\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eBearing Structural Core\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003ePrecision Dual Ball Bearings (Long-Life Matrix)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eTermination Layout Wiring\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e3-Wire Lead Configuration (Power \u0026amp; Tachometer Feedback)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eHousing Frame Material\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eReinforced Thermoplastic PBT, UL 94V-0 Rated Insulation\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eMounting Configuration\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eStandard 4-Corner Multi-Option Bolt Pass-Through Holes\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 Domain\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\u003eIndustrial Automation Racks\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003ePLC Enclosure Panels \u0026amp; Drive Bays\u003c\/td\u003e\n          \u003ctd\u003eForces continuous volumetric air displacement to mitigate dangerous localized heat localization around microprocessors.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003ePower Distribution Controls\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eSwitchgear Cabinets \u0026amp; UPS Modules\u003c\/td\u003e\n          \u003ctd\u003eSustains uniform structural airflow profiles across dense copper bus configurations to minimize resistive power loss drops.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n          \u003ctd\u003e\u003cstrong\u003eElectronic Subsystems\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eEmbedded Testing Instrument Enclosures\u003c\/td\u003e\n          \u003ctd\u003eThe dual-ball bearing core permits stable operation under any structural mounting tilt angle inside mobile automation carts.\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: Cabinet Thermal Load \u0026amp; Airflow Requirement Calculator\u003c\/h2\u003e\n  \u003cp style=\"margin-bottom: 16px;\"\u003eWhen outfitting an industrial control enclosure, engineers must determine the total volumetric airflow required to prevent internal component degradation. Input the cumulative equipment heat load and target delta temperature below to estimate airflow criteria.\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: 20px;\"\u003e\n      \u003cdiv\u003e\n        \u003clabel style=\"display: block; font-weight: bold; margin-bottom: 6px;\"\u003eAggregate Heat Dissipation (Watts):\u003c\/label\u003e\n        \u003cinput type=\"number\" id=\"koeed-heat-input\" value=\"120\" min=\"5\" max=\"3000\" style=\"width: 100%; padding: 8px; border: 1px solid #cccccc; border-radius: 4px; box-sizing: border-box;\" oninput=\"koeedCalculateAirflowReq()\"\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003clabel style=\"display: block; font-weight: bold; margin-bottom: 6px;\"\u003eMax Internal Temperature (°C):\u003c\/label\u003e\n        \u003cinput type=\"number\" id=\"koeed-t-max\" value=\"40\" min=\"20\" max=\"75\" style=\"width: 100%; padding: 8px; border: 1px solid #cccccc; border-radius: 4px; box-sizing: border-box;\" oninput=\"koeedCalculateAirflowReq()\"\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003clabel style=\"display: block; font-weight: bold; margin-bottom: 6px;\"\u003eAmbient Air Temperature (°C):\u003c\/label\u003e\n        \u003cinput type=\"number\" id=\"koeed-t-amb\" value=\"25\" min=\"0\" max=\"55\" style=\"width: 100%; padding: 8px; border: 1px solid #cccccc; border-radius: 4px; box-sizing: border-box;\" oninput=\"koeedCalculateAirflowReq()\"\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;\"\u003eCalculated Allowable Temperature Differential (ΔT): \u003cspan id=\"koeed-calc-dt-out\" style=\"color: #0056B3;\"\u003e15\u003c\/span\u003e °C\u003c\/p\u003e\n      \u003cp style=\"margin: 6px 0 0 0; font-weight: bold; font-size: 1.1em;\"\u003eMinimum Volumetric Flow Capacity Required:\u003c\/p\u003e\n      \u003cp style=\"margin: 4px 0 0 0; font-size: 1.1em; font-weight: bold; color: #16c8c8;\"\u003e\u003cspan id=\"koeed-calc-flow-m3\"\u003e24.8\u003c\/span\u003e m³\/h\u003c\/p\u003e\n      \u003cp style=\"margin: 2px 0 0 0; font-size: 1.1em; font-weight: bold; color: #0056B3;\"\u003e\u003cspan id=\"koeed-calc-flow-cfm\"\u003e14.6\u003c\/span\u003e CFM\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 page incorporates an interactive thermodynamic processing matrix. Please activate JavaScript tracking parameters in your web browser configuration to enable calculations.\n    \u003c\/div\u003e\n  \u003c\/noscript\u003e\n\n  \u003cscript\u003e\n    function koeedCalculateAirflowReq() {\n      var watts = parseFloat(document.getElementById('koeed-heat-input').value) || 0;\n      var tMax = parseFloat(document.getElementById('koeed-t-max').value) || 0;\n      var tAmb = parseFloat(document.getElementById('koeed-t-amb').value) || 0;\n\n      var dT = tMax - tAmb;\n      var dtSpan = document.getElementById('koeed-calc-dt-out');\n      var m3Span = document.getElementById('koeed-calc-flow-m3');\n      var cfmSpan = document.getElementById('koeed-calc-flow-cfm');\n\n      if (dT \u003c= 0) {\n        dtSpan.innerText = \"Invalid (\u0026Delta;T \u0026le; 0)\";\n        m3Span.innerText = \"N\/A - Overheated Ambient\";\n        cfmSpan.innerText = \"N\/A - Overheated Ambient\";\n        return;\n      }\n\n      dtSpan.innerText = dT.toFixed(0);\n\n      \/\/ Standard sea-level thermodynamic formula: Volumetric Flow (m³\/h) = (3.1 * Power in Watts) \/ dT in Kelvin\/Celsius\n      var flowM3 = (3.1 * watts) \/ dT;\n      var flowCfm = flowM3 * 0.58857;\n\n      m3Span.innerText = flowM3.toFixed(1);\n      cfmSpan.innerText = flowCfm.toFixed(1);\n    }\n    window.addEventListener('DOMContentLoaded', function() {\n      koeedCalculateAirflowReq();\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 interface pinout tracking assignments for the 3-wire lead configuration?\u003c\/h3\u003e\n  \u003cp style=\"margin-bottom: 12px;\"\u003e\n    The three distinct conductor insulated lead lines on the SD1225L1B follow standardized low-voltage electrical cooling conventions for color distribution mapping:\n  \u003c\/p\u003e\n  \u003cul style=\"padding-left: 20px; margin-bottom: 16px;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBlack Conductor (GND):\u003c\/strong\u003e Returns the reference frame negative path to the primary 0V ground terminal supply line.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRed Conductor (VCC):\u003c\/strong\u003e Connects directly to the positive power rail supply block, accepting a continuous \u003cstrong\u003eDC 12V\u003c\/strong\u003e source.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eYellow Conductor (TACH \/ FG Signal):\u003c\/strong\u003e Frequency generator tachometer speed feedback. This configuration functions via an internal open-collector circuit layout. It triggers two digital pulses per physical revolution, enabling upstream monitoring hardware to log motor speed trends.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eQ: The fan power loop is active but the speed monitor tracks zero RPM. How is this corrected?\u003c\/h3\u003e\n  \u003cp style=\"margin-bottom: 12px;\"\u003eAn accurate voltage feed combined with a zero RPM feedback trace generally points to a signal routing error rather than a physical motor failure. Follow this diagnostic sequence:\u003c\/p\u003e\n  \u003col style=\"padding-left: 20px; margin-bottom: 16px;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVerify External Pull-Up Resistor Presence:\u003c\/strong\u003e Because the internal tachometer transistor loop uses an open-collector design, it lacks native voltage drive. Engineers must wire an external \u003cstrong\u003epull-up resistor (typically 4.7kΩ to 10kΩ)\u003c\/strong\u003e bridging the Yellow signal node and the control logic power level (VCC) to register alternating digital square waves.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCheck Control Node Ground Potentials:\u003c\/strong\u003e Ensure that the ground plane (0V) of the fan's 12V supply loop is directly bonded to the ground plane of the recording PLC or microcontroller interface. Mismatched reference potentials clip signal sweeps.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInspect for Micro-Particle Stagnation:\u003c\/strong\u003e Isolate electrical sources and spin the blades manually. Check for dust buildup that can cause mechanical drag and slow the motor down.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003ch3\u003eQ: Can this 12V fan be modified to operate on a standard 24V automation line?\u003c\/h3\u003e\n  \u003cp style=\"margin-bottom: 12px;\"\u003e\n    No. Connecting the SD1225L1B directly to a 24V DC terminal rail will cause serious hardware damage. Over-voltage conditions draw excessive current through the copper windings, causing rapid thermal breakdown of the drive IC and permanent coil failure. Always use a dedicated \u003cstrong\u003eDC-DC step-down buck converter or step-down regulator\u003c\/strong\u003e to maintain stable 12V DC input conditions.\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 SENSDAR SD1225L1B configuration shares dimensional attributes and operational ratings with these standard industrial 12025 cooling components:\u003c\/p\u003e\n  \u003cul style=\"list-style-type: square; padding-left: 20px; margin-bottom: 24px;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNidec Beta V Alternative:\u003c\/strong\u003e D1225B12B Series (120x120x25mm dual-ball layout; verify tachometer logic outputs before re-routing signal leads).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDelta Electronics Equivalent:\u003c\/strong\u003e AFB1212LE Series (Standard low-speed 12V DC cooling configuration matching the 3-wire deployment footprint).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSunon Wealth Match:\u003c\/strong\u003e MEC0251V3-000U-A99 Series (Equivalently rated 12025 dual ball frame profiles designed for cabinet air extraction applications).\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 interface pinout tracking assignments for the 3-wire lead configuration?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"The wiring assignments designate the Black conductor line as Ground (0V), the Red wire line as VCC (+12V DC Input), and the Yellow wire line as the Tachometer\/FG Open-Collector output tracking node used for speed detection loops.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"The fan power loop is active but the speed monitor tracks zero RPM. How is this corrected?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Confirm that an external pull-up resistor (4.7k - 10k Ohm) is connected between the Yellow signal node and the logic supply rail. Additionally, ensure the fan's power ground is commoned with the monitoring PLC's input reference ground.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Can this 12V fan be modified to operate on a standard 24V automation line?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"No. Running this 12V DC hardware on a 24V DC line triggers critical electrical overload, quickly leading to internal driver component burnout. An intermediate step-down DC-DC buck regulator is required to maintain a safe 12V feed.\"\n          }\n        }\n      ]\n    },\n    {\n      \"@type\": \"WebApplication\",\n      \"name\": \"Cabinet Thermal Load \u0026 Airflow Requirement Calculator\",\n      \"applicationCategory\": \"BusinessApplication\",\n      \"operatingSystem\": \"All\",\n      \"browserRequirements\": \"Requires an HTML5 compliant modern rendering agent with active JavaScript control systems enabled.\",\n      \"description\": \"An interactive thermodynamic calculator built for automation field layout designers to estimate structural airflow capacity targets based on panel heat dissipation variables.\"\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"KOEED","offers":[{"title":"Default Title","offer_id":45514646323385,"sku":"155731783506","price":27.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/8476\/7929\/files\/1_9373319e-68ca-426e-9b19-706cc4771ac4.webp?v=1779653325","url":"https:\/\/koeed.com\/ar\/products\/sensdar-sd1225l1b-12025-dc12v-0-30a-12cm-3-wire-cooling-fan","provider":"KOEED","version":"1.0","type":"link"}