Jan 21, 2020 i used pin 2,7 and 1 to drive a relay. The pins are numbered from 1 to 3 starting from left to right. Bc557 on semiconductor datasheet and cad model download. Jun 19, 2017 today, i am going to give an introduction to bc547. Bc557 pnp transistor complementary npn, replacement, pinout. Bc557 is a widely used pnp bipolar junction transistor made of to92 small package. Brief description on bc557 transistor bc557 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. This article describes bc548 transistor pinout, equivalent, uses, features and other information about this device. Vce limits of the transistor that must be observed for reliable operation. You can still use these two circuits to identify the polarity of your transistor and its pin configuration. Some of the current flows to turn on the load, which in this case is the led. Bc557 transistor is a pnp bipolar junction generalpurpose transistor that is used. Collector load lines for specific circuits must fall below the limits indicated by the applicable curve. Just use the transistor tester technique described above.
Especially suited for use in driver stages of audio amplifiers, low noise input stages of tape recorders, hifi amplifiers, signal processing circuits of television receivers. Applications general purpose switching and amplification. T 25 c unless otherwise noted a rating symbol bc556 bc557 bc558 unit v 65 45 collectoremitter voltage eco 30 v 30 v collectorbase voltage cbo 80 50 v v ebo emitterbase voltage 5 5 5 v l. Bc547, 2n2222,bc549, bc550,2n3904,3906 are the alternate of bc548 but pin configuration may be differed so, must check the pin configuration before the use of any alternate of bc548. Pin configuration 2n2222a transistor is a common npn widely used in generalpurpose lowpower amplifying or switching circuits. Bc548 transistor pinout, equivalent, uses, features.
I tested the circuit by connecting it to 12v 40ah battery. Bc557 transistor introduction the world of electronic. The resistor r, and capacitor c, determines the timing of the flasher, and the period is proportional to r. It is basically an npn bipolar junction transistor bjt. Npn transistor circuit working, characteristics, applications. This transistor works in a fixed dc voltage in the preferred region of its characteristics which is called the biasing. The pnp equivalent is the complimentary transistor, which is the bc557. Usually, the device is held such that the flat side is facing toward the person. Some of the configurations used in amplifier circuits are. A transistor is normally used for amplification of current.
Bc transistor as switch when a transistor is used as a switch it is operated in the saturation and cutoff region as explained above. Absolute maximum ratings ta25c unless otherwise noted. Most of these modern transistors utilise a plastic package. Bc 548 is a commonly used transistor that can be found easily. Bc558559 emitterbase voltage collector current dc collector power dissipation junction temperature. Bc557 transistor introduction the world of electronic parts and. Pin configuration pinout of the bc557 the bc557 is manufactured in a plastic to92 case. Pnp complementary of bc548 is bc556,bc557 and bc558. Bc557 transistor pinout see the complete site com imagens. Bc557 from texas instruments highperformance analog. Bc557, bc557 datasheet, bc557 pnp general purpose transistor datasheet, buy bc557 transistor. Compare pricing for on semiconductor bc557 across 8 distributors and discover alternative parts, cad models, technical specifications, datasheets, and more on octopart. The bc548 is a generalpurpose npn bipolar junction transistor commonly used in european and american electronic equipment.
Pin configuration bottom view c b e r jc r ja omponents 21201 itasca street. Here is an image showing the pin configuration of this transistor in case type to92. Pinning pin description 1 emitter 2 base 3 collector fig. The pin configuration is the same as that of a bipolar junction transistor. This circuit uses a bc557 pnp transistor connected to a bc547 npn transistor in such a way so that the bc547 conducts for a very brief time making the led light.
The npn transistor consists of two ntype semiconductor materials and they are separated by a thin layer of ptype semiconductor. Bc556 bc557 bc558 bc559 bc560 pnp epitaxial silicon transistor. On special request, these transistors are also manufactured in the pin configuration to18. Pnp complementary of bc548 is bc556, bc557 and bc558. The flowing of these electrons from emitter to collector forms the current flow in the. This is identical in every respect to the npn type, except that it is a pnp type. Bc557,a,b,c bc558,b pnp silicon amplifier transistor 625mw to92 inches mm dim min max min max note a. Bc557 datasheetpdf 1 page micro commercial components.
Bc557 is a pnp transistor hence the collector and emitter will be closed when the base pin is held at ground and will be opened when a signal is provided to base pin. The bc558 because of this large gain value is normally used to as a audio amplifier. So we cannot process or ship any order untill 3rd may. Of the above types common emitter type is the popular and mostly used configuration. Pin configuration pinout of the bc547 the bc547 is manufactured in a plastic to92 case. The diagram shows the basic appearance of the transistor, which might differ slightly depending upon the particular make, however the technical specs and the pin out assignments remain identical.
Current now flows from the collector of the bc557 in 2 directions. The diagram shows the basic appearance of the transistor, which might differ slightly depending upon the particular make, however the technical specs and the pinout assignments remain identical. Featuresl through hole packagel 150oc junction temperaturemechanical datal case. It is notably often the first type of bipolar transistor hobbyists encounter and is often featured in designs in hobby electronics magazines where. Problem is, i have no voltage at all on the emitter pin when i try it. Here the majority charge carriers are the electrons. It can also be replaced with some well know transistors. Bc557 is a widely used pnp bipolar junction transistor manufactured in small to92 package. Alternative transistors for bc557 are 2n3906, 2n4403, bc556, bc327 output pins of some equivalents are. Circuit works with bc557 pnp transistor, but not tip32c.
The word transistor is a combination of two words, transfer and resistor. Philips, alldatasheet, datasheet, datasheet search site for electronic components. Bc557 transistor pinout, equivalent, uses, features. So, the basic purpose of transistor is transfer of resistance.
How to identify a bipolar transistors pin configuration. Alternative transistors for bc558 are bc559, 2n3906, bc338, 2n4403, a1015, bc557 the pin configuration of the alternative transistors shown here may different from bc558, therefore it is recommended to always check the pin configuration before replacing in a circuit. How to make simple electronic circuits using transistor bc547. This is where a pnp transistor differs from a npn transistor. Bc547 transistor pinout, equivalent, uses, features.
When you can light the led with a moist fingertip the transistor is connected correctly. These transistors are available in sot54 case type as well. Bc557 transistor as switch when a transistor is used as a switch it is operated in the saturation and cutoff region as explained above. Bc 547 npn transistor 45v 100ma hfe 150 specifications. Jan 15, 2020 of the above types common emitter type is the popular and mostly used configuration. Once it turns on, current flows from vcc down to the base of the bc557 transistor. Today, i am going to give an introduction to bc547. Bc557 datasheet, equivalent, cross reference search. How to make simple electronic circuits using transistor. The bc547 transistor includes three pins which include the.
Pnp general purpose transistors, bc557 datasheet, bc557 circuit, bc557 data sheet. Bc557 datasheet, bc557 pdf, bc557 data sheet, bc557 manual, bc557 pdf, bc557, datenblatt, electronics bc557, alldatasheet, free, datasheet, datasheets, data sheet. Oct 26, 2017 bc557 transistor as switch when a transistor is used as a switch it is operated in the saturation and cutoff region as explained above. Submitted by admin on 26 october bc has a gain value of tothis value determines the amplification capacity of the transistor. To control the impact of the covid19 outbreak, indian gov. Bc558 transistor pinout, equivalent, uses, features. Bipolar transistor, npn, 45v, to92transistor polarity.
Pin 1 is the anode, pin 2 is the gate and pin 3 is the cathode. Bc556 bc557 bc558 bc559 bc560 pn p epitaxial silicon transistor. Keep in min the output pins of some equivalents are different so please see. Find the pdf datasheet, specifications and distributor information. Apr 20, 2019 this article describes bc548 transistor pinout, equivalent, uses, features and other information about this device. I hope you all will be absolutely fine and having fun. Identify transistor pin out hi friends in this video i am going to talk about npn and pnp transistor their pins and how to identify their pin configuration.
Npn transistor is one of the bipolar junction transistor bjt types. Bc557, 557b general purpose transistor page 1 310505 v1. Driver modules like relay driver, led driver, and switching modules. Bc557 is a pnp transistor hence the collector and emitter will be closed when the base pin is held. Bc557 is a pnp transistor hence the collector and emitter will be. Bc556, ab bc557, abc bc558, abc pnp general purpose transistor collector 3 p b leadpbfree 2 base 1 2 3 1 emitter to92 maximum ratings. Jul 22, 2018 identify transistor pin out hi friends in this video i am going to talk about npn and pnp transistor their pins and how to identify their pin configuration. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the collector, base, and emitter leads. Bc557 pnp transistor complementary npn, replacement. It is a general purpose pnp transistor that can be used as a switch or amplifier in electronic circuits. Bc546, bc547, bc548, bc549, bc550, bc556, bc557, bc558, bc559, bc560 transistors.
It contains some of the best features in its little package. Bc557 bc556 the safe operating area curves indicate ic. Bc556 bc557 bc558 bc559 bc560 pnp epitaxial silicon. Dec 16, 2019 alternative transistors for bc558 are bc559, 2n3906, bc338, 2n4403, a1015, bc557 the pin configuration of the alternative transistors shown here may different from bc558, therefore it is recommended to always check the pin configuration before replacing in a circuit. Bc558 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.
Bc556b, bc557a, b, c, bc558b amplifier transistors on. Bc557 transistor introduction the world of electronic parts. Easy way of pin identification for electronics components and ics. 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.
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