{"product_id":"tlp521-photocoupler-optocoupler-ic-dip","title":"TLP521 Photocoupler Optocoupler IC DIP","description":"\u003cp\u003e\u003cstrong\u003eTLP521 Photocoupler Optocoupler IC\u003c\/strong\u003e is a single-channel optical isolator for separating control and power circuits, protecting microcontroller inputs and providing feedback or switching isolation.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDevice: TLP521\u003c\/li\u003e\n\u003cli\u003eChannels: single LED-to-phototransistor isolation channel\u003c\/li\u003e\n\u003cli\u003ePackage: 4-pin DIP-style through-hole package\u003c\/li\u003e\n\u003cli\u003eFunction: electrical isolation between input LED and output transistor\u003c\/li\u003e\n\u003cli\u003eApplications: relay and triac drivers, SMPS feedback, PLC interfaces, Arduino projects and industrial control\u003c\/li\u003e\n\u003cli\u003eDesign note: select LED current, CTR grade, output pull-up and isolation voltage from the exact datasheet\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the TLP521 do?\u003c\/strong\u003e\u003cbr\u003eIt transfers a control signal across an optical isolation barrier using an LED and phototransistor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan it isolate a microcontroller?\u003c\/strong\u003e\u003cbr\u003eYes, when correctly designed with current limiting, pull-up resistance and proper PCB clearance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it a relay?\u003c\/strong\u003e\u003cbr\u003eNo. It is an optocoupler IC; a separate transistor, MOSFET, relay or triac may be required for load switching.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat package is supplied?\u003c\/strong\u003e\u003cbr\u003eThis listing is for a 4-pin DIP-style through-hole package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan it be used on mains circuits?\u003c\/strong\u003e\u003cbr\u003eOnly in a properly engineered and certified circuit with correct creepage, clearance and safety protection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included?\u003c\/strong\u003e\u003cbr\u003eOne TLP521 optocoupler IC. PCB and other components are not included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I identify the pins?\u003c\/strong\u003e\u003cbr\u003eUse the package marking and datasheet pinout; do not rely on orientation alone.\u003c\/p\u003e","brand":"Embeded Studio","offers":[{"title":"Default Title","offer_id":62422534357362,"sku":null,"price":40.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/7935\/3202\/files\/tlp521.webp?v=1790706665","url":"https:\/\/embededstudio.com\/products\/tlp521-photocoupler-optocoupler-ic-dip","provider":"Embeded Studio","version":"1.0","type":"link"}