Recall, BC548 is a bipolar NPN junction transistor and is considered as a current-controlled device where small current at the base is used to control large current at the collector and emitter terminals. Plus, it can drive loads under 500mA and is available in TO – 92 package. That’s all for today.
What is the beta value of BC548?
BC548 has a gain value of 110 to 800, this value determines the amplification capacity of the transistor.
What is BC BC548?
For instance, the BC prefix in the case of the BC548 indicates the semiconductor is made out of silicon and is intended for general, all-around use. By comparison, AC or AF indicates a germanium semiconductor, and BL indicates a silicon transistor intended for high power applications.
Which transistor can I use instead of BC547?
BC547 Equivalents
The BC series, such as BC549 and BC639, are the finest recommendations for the BC547 transistor equivalent, followed by the 2N2222 transistor. BC636 replaces BC547, 2N2369, 2N3055, 2N3904, 2N3906, and 2SC5200 in the PNP.
Why BC547 transistor is used?
BC547 is usually used for current amplifier, quick switching and pulse-width modulation (PWM). Therefore, if you need to control the speed of a motor or actuator in some of your projects, you can simply use this transistor to achieve it.
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 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 does BC547 mean?
BC547 is a Bipolar Junction Transistor, abbreviated as BJT. It is an NPN transistor. It has three terminals named as: Emitter. Collector.
Can we use BC547 instead of BC546?
This group of NPN transistors share many specifications and characteristic curves, but differ in voltage ratings – the BC546 and BC547 are essentially the same as the BC548 but selected with higher breakdown voltages, while the BC549 is a low noise version, and the BC550 is both high-voltage and low-noise.
Can I use 2N2222 instead of BC547?
2N2222 is the most common and excellent substitute for BC547. The only minor changes are in the input and output capacitance, which are slightly higher in case of 2N2222 and will only affect circuits during high frequency operation and not otherwise. Other substitutes include 2N3904, PN100, 2N4401, BC337, etc.
What is the difference between BC107 and BC547?
It looks like the BC547 is a modern replacement for the BC107. They are packaged differently but otherwise look very similar in terms of electrical characteristics. They seem to have the same breakdown voltage; the BC547 seems to have slightly better cutoff frequency. The current gain has a very similar range.
What is BD140 transistor?
The BD140 is a PNP Epitaxial Planar Transistor that is mounted in the SOT-32 plastic package. They are designed for audio amplifiers and drivers utilizing complementary or quasi-complementary circuits. The NPN complement is BD139 and this transistor comes with a VCE of -80V and a continuous collector current of -1.5A.
How do PNP transistor?
In a PNP transistor, the base current which enters into the collector is amplified. The flow of current is typically controlled by the base. Current flows in the opposite direction in the base. In a PNP transistor, the emitter emits “holes”, and these holes are collected by the collector.
What is BC557 transistor?
BC557 is a general-purpose transistor, used like an amplifier or a switch in electronic circuits. Its hFE ratings of this transistor range from 125 to 800 to make the transistor ideal by using like an amplifier within electronic circuits like audio signal amplification.
What is the difference between BC557 and BC547?
What is the difference between BC547 and BC557? BC557 is a PNP transistor, nevertheless, BC547 is an NPN transistor.
Can I use BC547 instead of 2N3904?
Because the collector current of the 2N3904 is 200mA and the collector current of the BC547 is 100mA, you can replace the 2N3904 with BC547 if the load you’re driving is less than 100mA, but you can’t use BC547 if the load is greater than 100mA.
Which transistor can be used in place of 2N2222?
The 2N2907 is an equally popular PNP transistor complementary to the 2N2222. The 2N3904 is an NPN transistor that can only switch one-third the current of the 2N2222 but has otherwise similar characteristics.
