BC548 is a NPN transistor so the emitter and collector will be left open when the base pin has put at ground and will be closed when a signal is provided to base. BC548 Transistor has a gain cost of 110 – 800, this cost determines the amplification range of the transistor. The maximum quantity of present transistor that could flow through the editor pin is 500mA, But we cannot connect loads that consume more than 500mA using this transistor. To bias a transistor we have to supply present to base pin, this present (IB) should be fixed to 5mA. BC48 Transistor Pinout configuration is same like bc 547.
When this transistor is completely biased, it can a maximum of 500mA to flow across the emitter and editor. This stage is called Saturation Region and the common voltage said across the editor-Emitter (VCE) or Base-Emitter (VBE) could be 200 to 900 MV respectively. When there is no base current the transistor becomes completely off, this stage is called as the Cut-off Region.
Pin configuration of BC548 transistor
Features of BC548 Transistor:
- Max Collector Dissipation (Pc): 625 milliwatt
- Max Emitter-Base Voltage (VEBO): 5V
- Transistor Type: NPN
- Max Collector Current(IC): 500mA (Continuous)
- Max Collector-Base Voltage (VCB): 30V
- Minimum & Maximum DC Current Gain (hFE): 110 – 800
- Storage and Operating temperature max is: -55 to +150 Centigrade
- Package Type: TO-92
- Max Collector-Emitter Voltage (VCE): 30V
- Max Transition Frequency (fT): 150 MHz
Alternate of BC548
You can replace this transistor with BC547, 2N2222, BF494,BC549, C945, C828. Pin configuration of these transistors may be differed so must check the pin out before use any alternate.
Compliment of BC548
Compliment of this transistor are BC556, BC557, BC558 etc.
Where We Can Use it and How to Use:
BC548 transistor can be used in very common purpose applications; you can use it in the replacement of other general purpose transistor 2N3904, BC547 etc. A part of transistor which use as a switch to drive load under 500mA. The 500mA editor current is very good feature for this size and type of transistor you can drive different variety of loads at the same time in an electronic circuit. Furthermore, this transistor also has a very good DC current benefit and collector dissipation characteristics which makes it exemplar to use it in amplification and pre-amplification steps of an electronic circuit.