{"product_id":"delta-electronics-efb0405md-dc-axial-fan","title":"Delta Electronics EFB0405MD DC Axial Fan 5VDC 40x40x20mm 7.17CFM","description":"\u003cstyle\u003e.nxs-industrial-product-page{--industrial-navy:#082f49;--industrial-blue:#0b4f7c;--industrial-blue-2:#0f6ea8;--industrial-blue-3:#1784c1;--industrial-cyan:#38bdf8;--steel-blue:#dcebf5;--steel-blue-2:#edf6fb;--steel-line:#c9dce9;--surface:#ffffff;--surface-soft:#f7fbfe;--text-main:#173042;--text-muted:#5e7382;--shadow-soft:0 10px 30px rgba(8,47,73,0.08);--shadow-hover:0 16px 36px rgba(8,79,124,0.15);--radius-lg:14px;--radius-md:10px;}.nxs-industrial-product-page,.nxs-industrial-product-page *{margin:0;padding:0;box-sizing:border-box;font-family:Arial,Helvetica,sans-serif;}.nxs-industrial-product-page{background-color:#f3f8fb;background-image:linear-gradient(180deg,#eef6fb 0,#f7fafc 320px,#eef3f7 100%),linear-gradient(rgba(15,110,168,0.025) 1px,transparent 1px),linear-gradient(90deg,rgba(15,110,168,0.025) 1px,transparent 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(prefers-reduced-motion:reduce){.nxs-industrial-product-page,.nxs-industrial-product-page *,.nxs-industrial-product-page *::before,.nxs-industrial-product-page *::after{transition:none !important;}}\u003c\/style\u003e\u003cdiv class=\"nxs-industrial-product-page\"\u003e\u003cdiv class=\"container\"\u003e\u003cmain\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"spec-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eDelta Electronics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eEFB0405MD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Category\u003c\/td\u003e\n\u003ctd\u003eDC Axial Fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Series\u003c\/td\u003e\n\u003ctd\u003eEFB 40 x 40 x 20 mm Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFan Type\u003c\/td\u003e\n\u003ctd\u003eDC Brushless Tubeaxial Cooling Fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Dimensions\u003c\/td\u003e\n\u003ctd\u003e40 x 40 x 20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Voltage\u003c\/td\u003e\n\u003ctd\u003e5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e4.5–5.5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e0.15 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Power\u003c\/td\u003e\n\u003ctd\u003e0.75 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Speed\u003c\/td\u003e\n\u003ctd\u003e6300 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Free-Air Flow\u003c\/td\u003e\n\u003ctd\u003e7.17 CFM (0.203 m³\/min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Static Pressure\u003c\/td\u003e\n\u003ctd\u003e0.218 inH₂O (5.54 mmH₂O)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcoustical Noise\u003c\/td\u003e\n\u003ctd\u003e24.0 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearing Type\u003c\/td\u003e\n\u003ctd\u003eBall Bearings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Termination\u003c\/td\u003e\n\u003ctd\u003e2 Lead Wires\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLead Wire Polarity\u003c\/td\u003e\n\u003ctd\u003eRed: Positive (+); Black: Negative (-)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLead Wire Specification\u003c\/td\u003e\n\u003ctd\u003eUL1007 AWG24 or equivalent (rib-type series drawing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFan Frame Material\u003c\/td\u003e\n\u003ctd\u003ePlastic, UL 94 V-0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpeller Material\u003c\/td\u003e\n\u003ctd\u003ePlastic, UL 94 V-0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Hole Spacing\u003c\/td\u003e\n\u003ctd\u003e32.0 x 32.0 mm (series drawing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e3.5 mm (series drawing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLead Wire Length\u003c\/td\u003e\n\u003ctd\u003e330 ±10 mm (rib-type series drawing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e33 g (series specification)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10°C to +70°C (distributor specification)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Lifetime\u003c\/td\u003e\n\u003ctd\u003e70,000 hours at 40°C (distributor specification)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eLocked-Rotor Protection (distributor specification)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Functional Suffixes\u003c\/td\u003e\n\u003ctd\u003e-R00 and -F00 (series options; not assigned to base model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cdiv class=\"features\"\u003e\n\u003carticle class=\"card\"\u003e\u003ch3\u003e5 VDC Power Supply\u003c\/h3\u003e\n\u003cp\u003eThe EFB0405MD is specified for 5 VDC operation with a documented 4.5–5.5 VDC operating voltage range. The manufacturer series table identifies 0.15 A input current and 0.75 W input power.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003e40 x 40 x 20 mm Frame\u003c\/h3\u003e\n\u003cp\u003eThe 40 mm square axial fan has a 20 mm depth. The manufacturer rib-type drawing identifies 32.0 mm mounting-hole spacing and 3.5 mm mounting holes.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003e6300 RPM Rated Speed\u003c\/h3\u003e\n\u003cp\u003eDelta specifies 6300 RPM as the typical rotational speed for the EFB0405MD at rated voltage in free air.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003e7.17 CFM Free-Air Flow\u003c\/h3\u003e\n\u003cp\u003eThe manufacturer lists maximum free-air flow of 7.17 CFM and maximum static pressure of 0.218 inH₂O. These refer to different endpoints on the performance curve.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eBall Bearing Construction\u003c\/h3\u003e\n\u003cp\u003eDelta documents ball bearings and plastic frame and impeller materials classified UL 94 V-0. The typical noise level is listed at 24.0 dB(A).\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eTwo-Wire Connection\u003c\/h3\u003e\n\u003cp\u003eThe base model is listed with two wire leads for positive and negative DC power. The series also offers optional -R00 and -F00 functional variants; verify the complete suffix before specifying any additional signal output.\u003c\/p\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCompact industrial control enclosure ventilation\u003c\/li\u003e\n\u003cli\u003eEmbedded electronic module cooling\u003c\/li\u003e\n\u003cli\u003eCompact power supply ventilation\u003c\/li\u003e\n\u003cli\u003eTelecommunications equipment thermal management\u003c\/li\u003e\n\u003cli\u003eElectronic instrumentation enclosure airflow\u003c\/li\u003e\n\u003cli\u003eNetworking and computing hardware cooling\u003c\/li\u003e\n\u003cli\u003eSmall power electronics forced-air cooling\u003c\/li\u003e\n\u003cli\u003eMaintenance of compatible 5 VDC 40 mm axial fan assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003ePurchase Information\u003c\/h2\u003e\n\u003cp\u003eWe support online purchase of the Delta Electronics EFB0405MD DC Axial Fan. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is Delta Electronics EFB0405MD?\u003c\/strong\u003e\u003cbr\u003eEFB0405MD is a Delta Electronics 5 VDC brushless tubeaxial cooling fan in the 40 x 40 x 20 mm EFB series, with ball bearings and a two-wire power connection.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat is the rated supply voltage of EFB0405MD?\u003c\/strong\u003e\u003cbr\u003eDelta specifies a nominal supply voltage of 5 VDC and an operating range of 4.5–5.5 VDC.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of EFB0405MD?\u003c\/strong\u003e\u003cbr\u003eThe fan frame measures 40 x 40 x 20 mm. The Delta rib-type series drawing shows a 32.0 mm square mounting-hole pattern and 3.5 mm mounting holes.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat is the input current of EFB0405MD?\u003c\/strong\u003e\u003cbr\u003eThe manufacturer series table specifies 0.15 A at the rated 5 VDC supply. A separate maximum current value should not be assumed from this typical catalog rating.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat input power is specified?\u003c\/strong\u003e\u003cbr\u003eThe Delta catalog gives an input power of 0.75 W for EFB0405MD at its nominal supply voltage.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat is the rated fan speed?\u003c\/strong\u003e\u003cbr\u003eThe Delta EFB 40 x 40 x 20 mm series table lists 6300 RPM for EFB0405MD under nominal free-air test conditions.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat is the maximum airflow of EFB0405MD?\u003c\/strong\u003e\u003cbr\u003eThe manufacturer specifies 7.17 CFM (0.203 m³\/min) maximum free-air flow. Installed airflow depends on the equipment air-path resistance.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat is the maximum static pressure?\u003c\/strong\u003e\u003cbr\u003eThe manufacturer lists 0.218 inH₂O (5.54 mmH₂O) at zero airflow. This is not the pressure available at the maximum free-air-flow point.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat is the documented acoustic noise level?\u003c\/strong\u003e\u003cbr\u003eDelta specifies 24.0 dB(A), measured in an anechoic environment in free air at one meter from the intake side.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat bearing system does EFB0405MD use?\u003c\/strong\u003e\u003cbr\u003eDelta and major component distributors specify ball bearings. The catalog identifies plastic frame and impeller components classified UL 94 V-0.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eDoes EFB0405MD have two wires or a speed-feedback output?\u003c\/strong\u003e\u003cbr\u003eDigiKey and Mouser list the base EFB0405MD with two wire leads. Delta offers optional -R00 and -F00 functional versions in the series, so the base model should not be assumed to provide a separate sensor lead.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat should be checked before ordering Delta EFB0405MD?\u003c\/strong\u003e\u003cbr\u003eVerify the complete EFB0405MD model marking, 5 VDC supply, 0.15 A input rating, 40 x 40 x 20 mm housing, mounting-hole pattern, 7.17 CFM airflow requirement, ball bearing specification and two-wire polarity. Check any additional suffix against its corresponding wiring diagram.\u003c\/p\u003e\u003c\/section\u003e\u003c\/main\u003e\u003c\/div\u003e\u003c\/div\u003e","brand":"DELTA","offers":[{"title":"Default Title","offer_id":67786838900815,"sku":"LL1-DE- EFB0405MD","price":7.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/7569\/2623\/files\/EFB0405MD-01-_01.jpg?v=1792396238","url":"https:\/\/yunshuotrade.com\/products\/delta-electronics-efb0405md-dc-axial-fan","provider":"yunshuotrade","version":"1.0","type":"link"}