These epitaxial planar transistors are mounted in the TO-126 plastic package. The NPN types are the BD135 and BD139, and the complementary PNP types are the BD136 and BD140.
The SMD Tri-Color (RGB) LED Module Full Color LED Module Tri-color LED for Arduino. Can be directly plugged into the Arduino motherboard, no DuPont line connection required.
The 2SC3209 is a NPN Maximum Collector 2W Maximum Collector Base Voltage 300 V Maximum Collector Current 0.2 A Max. Operating Junction Temperature 125 °C Transition Frequency 80 MHz Forward Current Transfer Ratio 60.
The FDS3890 80V 4.7A N-Channel MOSFET has been designed specifically to improve the overall efficiency of DC/DC converters using either synchronous or conventional switching PWM controllers.
The BP2326A is a high precision non-isolated buck driver with active PFC, specially designed for universal input offline constant current LED lighting. The driver with on-chip PFC circuit achieves high power factor and low THD.
The BC558 is a PNP transistor hence the collector and emitter will be closed (Forward biased) when the base pin is held at ground and will be opened (Reverse biased) when a signal is provided to base pin.