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. The BC is supplied in a standard TO 3-pin package. The assignment of transistor elements b,c,e to leads, i. As viewed in the top-right image, going from left to right, the pinout is as follows:. Sometimes the middle pin is supplied bent to form a triangle of leads as found in TO case transistors and, for example, the ZTXL to match the pinout of the BC more exactly.Hacker group join
The BC part number is assigned by Pro Electronwhich allows many manufacturers to offer electrically and physically interchangeable parts under one identification. Devices registered to this Pro Electron number must have the following minimum performance characteristics: . This group of NPN transistors share many specifications and characteristic curves, but differ in voltage ratings - the BC and BC are essentially the same as the BC but selected with higher breakdown voltageswhile the BC is a low noise version, and the BC is both high-voltage and low-noise.
See the BC family for a table of these differences, and comparisons with predecessor types. Some manufacturers specify their parts with higher ratings, for example the Fairchild datasheet ABC, Rev B for the BC, sourced from Process 10 gave mA as the maximum collector current, while their datasheets dated have dropped the current rating to the standard mA.
There is lot of variation in the ft-transition maximum frequency from manufacturer to manufacturer. The type number of any of the devices in this "family" may be followed by a letter, "A" to "C", indicating devices that have been selected that fall within a narrow range of gain h FE. The same letters are used for this purpose in several other European transistors, and is similar in principle to the "Yellow", "Blue" and so on gain groupings in Japanese transistors, but should not be confused with the "A" suffix used with some American JEDEC devices, such as the 2NA, to indicate a variety of differences or enhancements over the base type.
So a BC might have a current gain anywhere between andbut the gain of a BCA would be within the range of to Notes: Some manufacturers place slightly different limits on the gain groups, for example the "B" group has been quoted as in a Philips datasheet.
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BC558 Bipolar Transistor
Retrieved 8 March Retrieved 28 March Fairchild Semiconductor.This article describes BC transistor pinout, equivalent, uses, features and other information about this device. BC is a commonly used transistor that can be found easily. It can also be replaced with some well know transistors.
BC is another general purpose widely used transistor that can be easily get from reputable electronic components store, this transistor also have bunch of good features on the basis of which one can use it in their electronic circuit, it can handle maximum current of mA which is enough to drive many other components such as ICS, other transistors, portion of a circuits, relays, LEDs etc.
The max collector dissipation of the device is miliWatt which is another good feature to use it as a small amplifier.C++ rest api client example
BC transistor can be used in many general purpose applications; you can use it in the replacement of other general purpose transistor 2N, BC etc. A part from that it can be used as a switch to drive load under mA. The mA collector current is quite good feature for this size and type of transistor therefore you can drive wide variety of loads at the same time in an electronic circuit. Moreover this transistor also has a very good DC current gain and collector dissipation characteristics which makes it ideal to use it in amplification and pre-amplification stages of an electronic circuit.
To increase the durability and performance of this device the user much follow the guide lines and should not increase the values as described below. Do not drive the transistor above 30V, always make sure to place its pins right in the circuit, do not provide load more than mA, and always use a suitable resistor at the base of the transistor to provide it required current.
It can be used as for any type of general amplification or switching. For using it as a switch to drive load it can handle mA of load with 30V. The collector dissipation is mW and maximum DC current gain is therefore it can also be used as audio preamplifier purposes and audio amplification purposes. The emitter-base voltage is -5V due to which it can also be used at the output of microcontrollers.
The transistors that are made for general purpose applications can be used in any type of normal requirements in electronic circuits. For example if used as a switch it can handle any load under mA like relays, LEDs, other big transistors, integrated circuits etc.
BC558 Datasheet, Equivalent, Cross Reference Search
On the other hand it can also be used as an audio amplifier or preamplifier and for any type of signal amplification. July 4, November 25, June 26, Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Leave a Reply Cancel reply Your email address will not be published.
For using it as a switch to drive load it can be control mA of load with 30volt. The collector dissipation is mW and max DC gain is so it can also be used as audio preamplifier and audio amplification purposes. The base voltage of emitter is -5volt due to which this transistor can also be used at the output of microcontrollers. Features of BC Transistor:. These transistors are made for typical purpose applications can be used in any kind of common requirements in electronic circuits.Bt sport on tv deals
For example if used as a switch it can be control any load under mA like relays, integrated circuits LEDs, other big transistors etc. On the other hand it can also be used as a preamplifier or audio amplifier and for any kind of signal amplification. Save my name, email, and website in this browser for the next time I comment.
Table of Contents. Post Views: 1, Leave a Reply Cancel reply Your email address will not be published.BC 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.
BC has a gain value of to ; this value determines the amplification capacity of the transistor. When this transistor is fully biased then it can allow continues current of mA to flow across the collector and emitter. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region and the Base Emitter voltage could be around mV.Tiger i3000
When a transistor is used as a switch it is operated in the Saturation and Cut-Off Region as explained above. As discussed a transistor will act as an Open switch during Forward Bias and as a closed switch during Reverse Bias, this biasing can be achieved by supplying the required amount of current to the base pin.
A resistor is always added in series with base pin to limit the base current.
The value of this resistor RB can be calculated using below formulae. Also note that a PNP transistor is always used for high side switching, meaning the collector is connected to power and emitter to load that is to be switched. A Transistors acts as an Amplifier when operating in Active Region. It can amplify power, voltage and current at different configurations.
Of the above types common emitter type which amplifies voltage is the popular and mostly used configuration. The BC because of this large gain value is normally used to as a audio amplifier.
Where an input signal of low voltage is amplified switched to high voltages t0 drive loads like speakers. In the below GIF you can notice the transistor being switched for a low voltage 1v audio signal.
When uses as an Amplifier the DC current gain of the Transistor can be calculated by using the below formulae. Subscribe to stay updated with industry's latest Electronics components and news. BC as switch When a transistor is used as a switch it is operated in the Saturation and Cut-Off Region as explained above.
Amplifier modules like Audio amplifiers, signal Amplifier etc. Component Datasheet. BC Datasheet. Tags PNP Transistor. Get Our Weekly Newsletter!
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BC558 Transistor Pinout, Equivalent, Uses, Features & Applications
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BC558 Transistor Pinout, Equivalent,Features & Applications
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