{"product_id":"3mm-red-led-pack-of-10","title":"3mm Red Led (Pack of 10)","description":"\u003cmeta name=\"description\" content=\"Buy 3mm Red Led Pack of 10 online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003e3mm Red LED (Pack of 10)\u003c\/h1\u003e\n\u003cp\u003eReliable 3mm red LEDs ideal for indicator circuits, breadboard prototyping, and embedded projects. This pack of 10 offers bright, consistent red illumination with low power consumption and long operational life. A must-have staple for every electronics toolkit - from The Engineer Store, Bengaluru.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Size\u003c\/td\u003e\n\u003ctd\u003e3mm (T-1) Through-Hole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmitted Color\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Color\u003c\/td\u003e\n\u003ctd\u003eRed Diffused \/ Clear (standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Voltage (Vf)\u003c\/td\u003e\n\u003ctd\u003e1.8V - 2.2V typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Current (If)\u003c\/td\u003e\n\u003ctd\u003e20mA (max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e620nm - 635nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLuminous Intensity\u003c\/td\u003e\n\u003ctd\u003e~80-150 mcd typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eViewing Angle\u003c\/td\u003e\n\u003ctd\u003e~25 degrees-30 degrees\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Resistor (5V)\u003c\/td\u003e\n\u003ctd\u003e150Ohm - 220Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Quantity\u003c\/td\u003e\n\u003ctd\u003e10 LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePolarity Identification\u003c\/td\u003e\n\u003ctd\u003eLonger leg = Anode (+), Shorter leg \/ Flat edge = Cathode ()\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e25 degreesC to +85 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifespan\u003c\/td\u003e\n\u003ctd\u003e~50,000 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eElectronics Component - Optoelectronics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhy Choose This?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBright, uniform red output at just 20mA - ideal for status indicators and signal lights\u003c\/li\u003e\n\u003cli\u003eStandard 3mm through-hole package fits breadboards, perfboards, and custom PCBs effortlessly\u003c\/li\u003e\n\u003cli\u003eLow forward voltage (1.8V-2.2V) ensures compatibility with 3.3V and 5V logic systems\u003c\/li\u003e\n\u003cli\u003ePack of 10 gives you spares for multiple projects without reordering\u003c\/li\u003e\n\u003cli\u003eLong 50,000-hour lifespan for dependable, maintenance-free operation\u003c\/li\u003e\n\u003cli\u003eEasy polarity identification via leg length and flat-edge marking\u003c\/li\u003e\n\u003cli\u003e100% authentic from trusted suppliers\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery from Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003eExpert technical support included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower-On Indicators:\u003c\/strong\u003e Add a simple red LED to any circuit to confirm power status at a glance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino \u0026amp; Raspberry Pi Projects:\u003c\/strong\u003e Use as GPIO output indicators - blink patterns, alarm signals, or debug markers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraffic Light Model:\u003c\/strong\u003e Combine red, yellow, and green 3mm LEDs to build a miniature traffic signal for learning state machines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Level Monitor:\u003c\/strong\u003e Create a multi-LED bar graph to visually display battery charge levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIR \/ Sensor Feedback:\u003c\/strong\u003e Pair with sensors to provide visible alerts when thresholds are crossed (temperature, proximity, light).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED Chaser \/ Knight Rider Effect:\u003c\/strong\u003e Wire up all 10 LEDs in a row and program sequential lighting patterns with a microcontroller or 555 timer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLearning \u0026amp; Education:\u003c\/strong\u003e Perfect for teaching Ohm's Law, forward bias, current limiting, and basic circuit construction in classrooms and workshops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e10 x 3mm Red LEDs (through-hole)\u003c\/li\u003e\n\u003cli\u003eAnti-static packaging for safe storage\u003c\/li\u003e\n\u003cli\u003eDocumentation and support materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat resistor should I use with these LEDs?\u003c\/summary\u003e\u003cp\u003eFor a 5V supply, a 150Ohm to 220Ohm resistor works well to limit current to around 15-20mA. For 3.3V, use a 68Ohm to 100Ohm resistor. Always place the resistor in series with the LED to prevent burnout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I identify the anode and cathode?\u003c\/summary\u003e\u003cp\u003eThe longer leg is the anode (+) and connects toward the positive supply. The shorter leg with the flat edge on the LED housing is the cathode () and connects toward ground.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I drive these directly from an Arduino GPIO pin?\u003c\/summary\u003e\u003cp\u003eYes. Arduino GPIO pins output 5V and can source up to 20mA per pin. Use a 220Ohm series resistor for safe, bright operation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre these LEDs diffused or clear lens?\u003c\/summary\u003e\u003cp\u003eStandard stock is typically red-tinted diffused lens, which provides a wide, even glow. Clear-lens variants with a focused beam may also be supplied depending on batch - both perform identically in typical indicator applications.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this 100% authentic?\u003c\/summary\u003e\u003cp\u003eYes, sourced directly from authorized distributors. Authentication verified.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eBuy 3mm Red Led (Pack of 10) Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003e3mm Red Led (Pack of 10)\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003e3mm Red Led (Pack of 10)\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003e3mm Red Led (Pack of 10)\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773685268643,"sku":"TES-EV102304","price":13.78,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/5mm_red_led_p10_1.jpg?v=1701073806","url":"https:\/\/www.theengineerstore.in\/zh-hans\/products\/3mm-red-led-pack-of-10","provider":"The Engineer Store","version":"1.0","type":"link"}