{"product_id":"bc557-pnp-transistor-pack-of-5","title":"BC557 PNP Transistor - (Pack of 5)","description":"\u003cmeta name=\"description\" content=\"Buy BC557 PNP Transistor Pack of 5 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```html\n\u003ch1\u003eBC557 PNP Transistor - (Pack of 5)\u003c\/h1\u003e\n\u003cp\u003eThe BC557 is a widely used general-purpose PNP bipolar junction transistor, ideal for low-power switching and signal amplification circuits. With a collector current rating of -100mA and a collector-emitter voltage of -45V, it serves as the PNP complement to the popular BC547 NPN transistor. This pack of 5 ensures you have spares on hand for prototyping, repairs, and project builds. Available from The Engineer Store, Bengaluru with fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eComponent Type\u003c\/td\u003e\n\u003ctd\u003ePNP Bipolar Junction Transistor (BJT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eBC557\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eTO-92\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 Pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePolarity\u003c\/td\u003e\n\u003ctd\u003ePNP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollector-Emitter Voltage (V\u003csub\u003eCEO\u003c\/sub\u003e)\u003c\/td\u003e\n\u003ctd\u003e-45V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollector-Base Voltage (V\u003csub\u003eCBO\u003c\/sub\u003e)\u003c\/td\u003e\n\u003ctd\u003e-50V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmitter-Base Voltage (V\u003csub\u003eEBO\u003c\/sub\u003e)\u003c\/td\u003e\n\u003ctd\u003e-5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollector Current (I\u003csub\u003eC\u003c\/sub\u003e)\u003c\/td\u003e\n\u003ctd\u003e-100mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation (P\u003csub\u003eD\u003c\/sub\u003e)\u003c\/td\u003e\n\u003ctd\u003e500mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Current Gain (h\u003csub\u003eFE\u003c\/sub\u003e)\u003c\/td\u003e\n\u003ctd\u003e110 - 800 (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransition Frequency (f\u003csub\u003eT\u003c\/sub\u003e)\u003c\/td\u003e\n\u003ctd\u003e150 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Configuration\u003c\/td\u003e\n\u003ctd\u003eCollector, Base, Emitter (C-B-E)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-65 degreesC to +150 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComplement NPN\u003c\/td\u003e\n\u003ctd\u003eBC547\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 the BC557 from The Engineer Store?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile PNP transistor:\u003c\/strong\u003e Handles switching and amplification tasks up to -100mA collector current and -45V V\u003csub\u003eCEO\u003c\/sub\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh current gain:\u003c\/strong\u003e h\u003csub\u003eFE\u003c\/sub\u003e range of 110-800 provides excellent sensitivity for low-signal applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry-standard TO-92 package:\u003c\/strong\u003e Breadboard and PCB friendly with easy-to-identify pinout (C-B-E)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplementary pair ready:\u003c\/strong\u003e Pairs perfectly with BC547 NPN for push-pull amplifier stages and complementary circuit designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack of 5 included:\u003c\/strong\u003e Enough transistors for multi-stage circuits, experimentation, and keeping spares\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% authentic components\u003c\/strong\u003e sourced directly from trusted and authorized distributors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-5 day shipping, 7-8 day delivery\u003c\/strong\u003e from our Bengaluru warehouse to most locations across India\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert technical support\u003c\/strong\u003e available 24\/7 to help with circuit design and troubleshooting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas \u0026amp; Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitching Circuits:\u003c\/strong\u003e Use the BC557 to switch LEDs, relays, buzzers, and small loads from the high side - ideal when the load connects to ground and you need a PNP transistor to control power from the positive rail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Amplification:\u003c\/strong\u003e Build common-emitter or common-collector amplifier stages for audio pre-amplifiers, sensor signal conditioning, and small-signal processing circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplementary Push-Pull Amplifiers:\u003c\/strong\u003e Pair with the BC547 NPN transistor to create Class-B or Class-AB audio output stages that efficiently drive speakers and headphones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Source \u0026amp; Current Mirror:\u003c\/strong\u003e Design precision constant-current sources and current mirrors for biasing circuits, LED drivers, and analog instrumentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOscillator Circuits:\u003c\/strong\u003e Construct astable and monostable multivibrators, relaxation oscillators, and tone generators using BC557 pairs or mixed NPN\/PNP configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor Interface Circuits:\u003c\/strong\u003e Amplify signals from thermistors, LDRs, photodiodes, and other sensors to drive microcontroller ADC inputs or trigger actuators.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Regulators:\u003c\/strong\u003e Use as a pass element in simple series voltage regulators or as a driver transistor in linear regulator designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino \u0026amp; Microcontroller Projects:\u003c\/strong\u003e Drive higher-current loads that GPIO pins cannot handle directly, such as motor drivers, relay modules, and LED arrays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLearning \u0026amp; Education:\u003c\/strong\u003e Perfect for electronics students studying BJT theory, biasing, load-line analysis, and transistor circuit design on breadboards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use the BC557 PNP Transistor\u003c\/h2\u003e\n\u003cp\u003eThe BC557 has three pins in the TO-92 package: \u003cstrong\u003eCollector (C)\u003c\/strong\u003e, \u003cstrong\u003eBase (B)\u003c\/strong\u003e, and \u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy BC557 PNP Transistor - (Pack of 5) Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eBC557 PNP Transistor - (Pack of 5)\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\u003eBC557 PNP Transistor - (Pack of 5)\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\u003eBC557 PNP Transistor - (Pack of 5)\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":43773670555811,"sku":"TES-EV102248","price":8.4,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/images_8_1.jpg?v=1701073688","url":"https:\/\/www.theengineerstore.in\/zh-hans\/products\/bc557-pnp-transistor-pack-of-5","provider":"The Engineer Store","version":"1.0","type":"link"}