BC457 TRANSISTOR PDF

The BC is a general-purpose NPN bipolar junction transistor commonly used in European and American electronic equipment. It is notably often the first type. Features: • NPN general purpose transistors, especially suited for use in driver stages of audio amplifiers, low noise input stages of tape recorders, HI-FI. A BC transistor is a negative-positive-negative (NPN) transistor that is used for many purposes. Together with other electronic components, such as resistors, .

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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.

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This series, introduced in by Philipsbecame the most used transistors in Australia [5] and was taken up by many European manufacturers. 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 transistoe.

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 tranwistor. The BC part number is assigned by Pro Electronwhich allows many manufacturers to offer electrically and physically interchangeable parts under one identification.

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BC | Transistor BC PINOUT | PDF Datasheet

Devices registered to this Pro Electron number must have the following minimum performance characteristics: This group of NPN trannsistor 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 bc45 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 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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Transistor BC547

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