D13005D 700V High Voltage Fast Switching Transistor 3.3V Linear Regulator Module it acts as the other

it acts as the other plate of the capacitor

This product normally operate on 4 to 8v dc and its current rating is less than equal to 30maA

Power switching and general switching Applications It is mostly used in general-purpose switching and amplification

These are generally panel mountable fuse holders

D13005D 700V High Voltage Fast Switching Transistor 3.3V Linear Regulator Module it acts as the otherD13005D is a high voltage fast switching NPN transistor which is used in switching operation it's used in fast switching operations like SMPS, UPS, Motor control, Power supply switching Applications, Energy saving, Electronic ballasts, High frequency switching power supply, High frequency power transform, Commonly power amplifier. Applications: Energy saving light Electronic ballasts High frequency switching power supply High frequency power transform