BC817-25 NPN Transistor SOT-23 SMD COM11

DescriptionEvery electronics designer needs a reliable NPN transistor in their toolkit for when standard 200mA small-signal components fall short. The BC817-25 NPN Transistor is exactly that. It provides excellent switching speeds, reliable signal amplification, and robust medium-power handling for a massive variety of everyday circuit applications.NameTypesImagePriceAdd Link2SA733PNP350Add to Basket2SC1623NPN400Add to Basket2SC945NPN350Add to BasketA1015PNP350Add to BasketBC807PNP400Add to BasketBC817NPN300Add to BasketC1815NPN400Add to BasketMMBT2222ANPN350Add to BasketMMBT2907PNP400Add to BasketMMBT3904NPN350Add to BasketMMBT3906PNP350Add to BasketMMBT4403PNP400Add to BasketMMBT5401PNP350Add to BasketMMBT5551NPN350Add to BasketMMBTA42NPN400Add to BasketMMBTA44NPN350Add to BasketMMBTA92PNP350Add to BasketS8050NPN350Add to BasketS8550PNP350Add to BasketS9012PNP350Add to BasketS9013NPN350Add to BasketS9014NPN350Add to BasketS9015PNP350Add to BasketS9018NPN350Add to BasketSI2305P-Channel400Add to BasketMedium-Power Low-Side SwitchDesigned for fast, efficient logic-level control, the BC817-25 NPN Transistor comfortably handles continuous collector currents up to 500mA. This makes it the perfect choice for low-side switching. Use it to cleanly turn ground paths on and off for heavier 5V sensors, drive indicator LEDs, or act as a reliable interface between your microcontroller and larger mechanical relay driver circuits.Compact SOT-23 FootprintModern electronics demand smaller footprints without sacrificing current capacity. The SOT-23 surface-mount package allows you to integrate this versatile transistor into space-constrained IoT devices, wearables, and custom logic boards. Featuring the industry-standard top mark 6B (refer to image_0c5694.png), this component is easy to identify during manual prototyping, inventory sorting, or automated pick-and-place assembly.Optimal Gain RangeBipolar junction transistors are categorized by their DC current gain (hFE). The “-25” suffix on this specific component indicates a highly desirable, mid-range gain classification of 160 to 400. This ensures predictable, efficient performance whether you are saturating it as a switch or biasing it as an amplifier.Key FeaturesHigh Current Capability: Drives continuous loads up to 500mA, ideal for medium-power switching applications.Predictable Amplification: The “-25” classification ensures a reliable DC current gain (hFE) between 160 and 400.Miniature Footprint: The SOT-23 SMD package optimizes valuable PCB real estate while maintaining great thermal stability.Technical SpecificationsTransistor Polarity: NPN BJTCollector-Emitter Voltage (VCEO): 45V MaximumCollector-Base Voltage (VCBO): 50V MaximumEmitter-Base Voltage (VEBO): 5V MaximumContinuous Collector Current (IC): 500mAPeak Collector Current (ICM): 1.0APower Dissipation (PD): 250mWDC Current Gain (hFE): 160 to 400 (at IC = 100mA)Package Type: SOT-23 (Surface Mount)Top Marking Code: 6BIdeal ApplicationsLow-Side Load Switching: Turning on power to LED strips, small DC motors, relays, and medium-power modules.Signal Amplification: Serving as a reliable driver stage in audio amplifiers and analog sensor circuits.Electronics Repair: Replacing faulty 6B-marked NPN transistors in commercial logic boards, toys, and small appliances.