What is transistor BC548?
The BC548 is a general-purpose NPN bipolar junction transistor commonly used in European and American electronic equipment. It is notably often the first type of bipolar transistor hobbyists encounter and is often featured in designs in hobby electronics magazines where a general-purpose transistor is required.
How do I test a BC548 transistor?
BC 547 is a NPN Transistor where the 2nd (middle terminal is base) connected to Red (+Ve) test lead of multimeter. At all, Terminal 1 = Emitter, Terminal 2 = Base, and Terminal 3 = Collector (BC 547 NPN Transistor) because, the test result for 1-2 = 0.717 VDC and 2-3 = 0.711 VDC, i.e. 1-2 > 2-3.
How do I use BC548 as a switch?
BC548 TRANSISTOR AS A SWITCH When we apply a high enough current at the base of the transistor, it makes a path for the collector current to go through the base towards the emitter. In order to use the transistor as a switch, it must be driven into the saturation region with enough base current.
How do you know if a transistor is good or bad?
Hook the positive lead from the multimeter to the to the COLLECTOR (C) of the transistor. Hook the negative meter lead to the BASE (B) of the transistor. For an good NPN transistor, you should see “OL” (Over Limit). If you are testing PNP transistor, the meter should show a voltage drop between 0.45V and 0.9V.
How does BC547 transistor work?
The BC547 is a NPN transistor meaning when power is applied to the base (control pin) it will flow from the collector to the emitter. Typically NPN transistors are used to “switch ground” on a device, meaning, they are placed after the load in a circuit.
What is BC107 transistor?
The BC107 and BC107B are silicon planar epitaxial NPN transistors in TO-18 metal case. They are suitable for use in driver stages, low noise input stages and signal processing circuits of television receivers. The PNP complementary types are BC177 and BC177B respectively.
What is early voltage of BC547?
Technical specifications of BC547: Package-Type: TO-92. Transistor Type: NPN. Max Collector Current (IC): 100mA. Max Collector-Emitter Voltage (VCE): 45V.
What causes a transistor to fail?
When a diode or a transistor fails, one of two things usually happens: A junction (or junctions) go short circuit (its resistance becomes very low or zero). A junction (or junctions) go open circuit (its resistance becomes very high or infinity).
What do B C and F represent in BC107 and BF 494?
B is for silicon and A is for germanium. Second letter indicates frequency of operation. C is for audio and F is for high frequency (RF) application. Therefore BC107 is a silicon transistor for low frequency (AF) applications.
How do you test a bad transistor?
Connect the red probe in turn to each of the three leads. If the other two leads don’t give the same reading when touched by the black probe, the transistor is PNP and it is bad. Multimeter tests determine if a transistor is blown (open or shorted) and provide a rough estimate of the transistor’s ability to amplify.
Can I use BC548 instead of 2N2222?
2N2222 is a metallic package TO-18 and PN2222 is a plastic package TO-92, you can refer to the datasheet of them. Can I use BC548 instead of BC547? NO, BC547 is an NPN and BC548 is a PNP transistor both the transistors are not substituted for each other. What is the difference between 2N2222 and 2N2222A?