BC338 Transistor (TO-92) ⚡

The BC338 is a high‑quality NPN bipolar junction transistor (BJT) in a compact TO-92 package, designed for universal amplification and switching tasks. Widely used in electronics components and modules, it is a dependable choice for both engineers and hobbyists building circuits with  any microcontroller platform.

🔧 Key Features

• High current gain with excellent linearity across hFE bins (A/B/C).
• Low saturation voltage for efficient switching.
• Low noise performance suitable for small-signal amplification.
• Fast switching capability for digital and driver stages.
• RoHS compliant and lead-free construction.
• Through-hole TO-92 package for easy prototyping and repairs.

📐 Technical Specifications

• Transistor Type: NPN BJT
• Package: TO-92 (through-hole)
• Collector–Emitter Voltage (VCEO): 25 V
• Collector–Base Voltage (VCBO): 30 V
• Emitter–Base Voltage (VEBO): 5 V
• Collector Current (IC): 800 mA (max)
• Power Dissipation (PD): 625 mW
• DC Current Gain (hFE): 100 to 630 (gain group dependent)
• Transition Frequency (fT): 100 MHz
• Compliance: RoHS, lead-free

🧩 Typical Applications

• Audio amplifiers and low-noise preamplifier stages
• Signal processing and small-signal gain blocks
• Power switching for relays, LEDs, and small motors
• Driver circuits for loads controlled by microcontrollers
• Regulator circuits and reference drivers

💡 Integration Tips

• Use an appropriate base resistor to set base current and protect the microcontroller I/O pin.
• Observe all maximum ratings (voltage, current, power) and provide adequate thermal management where necessary.
• For switching inductive loads, add a flyback diode across the coil to protect the transistor.

📄 Datasheet