{"product_id":"si9435b-fds9435a-p-channel-30v-mosfet-so8","title":"SI9435B \/ FDS9435A P-Channel 30V MOSFET – SO-8","description":"\u003cp\u003e\u003cstrong\u003eSI9435B \/ FDS9435A-compatible P-channel MOSFET\u003c\/strong\u003e is a compact −30 V power transistor in an SO‑8 surface-mount package for load switching, battery protection, reverse-polarity protection and DC power-management circuits. The supplied component is identified by its actual top marking; the product photograph shows a device marked \u003cstrong\u003e9435B\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eP-channel enhancement-mode power MOSFET\u003c\/li\u003e\n\u003cli\u003eDrain-source voltage rating: −30 V class\u003c\/li\u003e\n\u003cli\u003eSO‑8 \/ SOP‑8 surface-mount package with eight leads\u003c\/li\u003e\n\u003cli\u003eLow on-resistance for efficient power switching\u003c\/li\u003e\n\u003cli\u003eSuitable for gate-drive voltages commonly used in portable and DC power systems\u003c\/li\u003e\n\u003cli\u003eLow gate charge and fast switching characteristics\u003c\/li\u003e\n\u003cli\u003eCommonly used for power management, load switching and battery protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Details\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplayed marking\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9435B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatibility references\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSI9435B \/ Si9435BDY and FDS9435A family; verify before substitution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannel type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP-channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrain-source voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e−30 V class\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSO‑8 \/ SOP‑8, surface mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFDS9435A reference current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to −5.3 A under specified datasheet test conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFDS9435A reference RDS(on)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 mΩ maximum at VGS = −10 V; 80 mΩ maximum at VGS = −4.5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePolarity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNegative gate-to-source drive turns the P-channel device on\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCB surface mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 × 9435B P-channel MOSFET IC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility notice:\u003c\/strong\u003e SI9435B, Si9435BDY, FDS9435A and other “9435” marked devices may differ in pin assignment, maximum current, on-resistance, gate charge, thermal rating and manufacturer specifications. Match the complete part number, package marking, circuit requirements and official datasheet before replacement. Electrical ratings depend on PCB copper area, junction temperature and operating conditions.\u003c\/p\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBattery protection and power-path control\u003c\/li\u003e\n\u003cli\u003eHigh-side load switching\u003c\/li\u003e\n\u003cli\u003eReverse-polarity protection\u003c\/li\u003e\n\u003cli\u003eNotebook and portable-equipment repair\u003c\/li\u003e\n\u003cli\u003eDC-DC converter input\/output switching\u003c\/li\u003e\n\u003cli\u003eMotherboard and embedded power-management circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs the 9435B an N-channel or P-channel MOSFET?\u003c\/h3\u003e\n\u003cp\u003eIt is a P-channel MOSFET intended primarily for high-side and power-management switching.\u003c\/p\u003e\n\u003ch3\u003eWhat is its drain-source voltage rating?\u003c\/h3\u003e\n\u003cp\u003eThe SI9435B\/FDS9435A family is generally rated for −30 V drain-to-source operation. Confirm the exact device datasheet before use.\u003c\/p\u003e\n\u003ch3\u003eAre SI9435B and FDS9435A exact replacements?\u003c\/h3\u003e\n\u003cp\u003eThey are often considered functionally similar, but they should not be treated as automatically identical. Compare pinout, RDS(on), current, gate-drive and thermal specifications first.\u003c\/p\u003e\n\u003ch3\u003eWhat package does this component use?\u003c\/h3\u003e\n\u003cp\u003eIt uses the SO‑8\/SOP‑8 surface-mount package.\u003c\/p\u003e\n\u003ch3\u003eCan it be used for battery protection?\u003c\/h3\u003e\n\u003cp\u003eYes, if its voltage, current, gate-drive and thermal limits match the circuit design.\u003c\/p\u003e\n\u003ch3\u003eCan I solder it by hand?\u003c\/h3\u003e\n\u003cp\u003eAn experienced technician can solder or replace it using suitable hot-air or fine-tip equipment, flux, magnification and ESD precautions.\u003c\/p\u003e\n\u003ch3\u003eHow do I confirm it is suitable for my repair?\u003c\/h3\u003e\n\u003cp\u003eRead the original component marking and compare the board schematic or original datasheet. Do not rely only on the “9435” number.\u003c\/p\u003e\n\u003ch3\u003eIs the listed current available continuously?\u003c\/h3\u003e\n\u003cp\u003eNot necessarily. Continuous current depends strongly on PCB layout, copper area, ambient temperature and junction-temperature limits.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eProduct names and trademarks belong to their respective owners. Compatibility references are provided for identification and comparison.\u003c\/em\u003e\u003c\/p\u003e","brand":"Embeded Studio","offers":[{"title":"Default Title","offer_id":62249957687666,"sku":"ES-SI9435B-FDS9435A-SO8","price":85.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/7935\/3202\/files\/SI9435.webp?v=1787938091","url":"https:\/\/embededstudio.com\/products\/si9435b-fds9435a-p-channel-30v-mosfet-so8","provider":"Embeded Studio","version":"1.0","type":"link"}