Continental device india limited data sheet page 4 of 4. Applications general purpose switching and amplification. If a mica insulation is used, the thermal resistance of the mica washer must be added, which amounts to about 0. Further transistor amplification stages are required to drive a speaker. The central semiconductor bc107, bc108,bc109 series types are small signal npn silicontransistors, manufactured by the epitaxial planarprocess, designed for general purpose amplifierapplications. Bc108 npn general purpose transistor, bc108 npn transistor, bc108 datasheet, bc108 pdf, bc108 buy, bc108 online, bc108 india. Bc107 cross reference electronic circuits, tv schematics. They are suitable for use in driver stages, low noise input stages and signal processing circuits of television reveivers. Bc109 npn general purpose transistors 1997 sep 03 product specification supersedes. Audio transistor amplifier circuit bricks the easy way. Low power bipolar transistors bc107 bc108 series page 240412 v1. Pinning pin description 1 emitter 2 base 3 collector fig. Pnp general purpose transistor bc177 features low current max.
Bc108 bipolar bjt single transistor, general purpose. The way that a 2n2222, bc107, bc108 and bc109 transistor symbol maps to the physical device is shown in the diagram below. These transistors are utilised in audio frequency, and small signal directly coupled preamplifiers. Unit vcbo collectorbase voltage open emitter bc107. Hi bc547 is an npn bd7 is a bigger transistor no,bc557 is a pnp no, 2n3904 is an equivalentyes i do not know 1c128. Since the distribution of heat in the transistor crystal is not uniform and depends on voltage and. Can anyone help me to make an audio amplifier using bc107. They were created by philips and mullard in 1963 and introduced in april 1966. Simple led and transistor switch silverlight developer. Bc109 series types are small signal npn silicon transistors, manufactured by the epitaxial planar process. Bc307b amplifier transistors pnp silicon features this is a pb. The bc549c is an npn transistor belonging to a group of generalpurpose npn semiconductors consisting of bc547, bc548, and bc549. Bc107, bc108, bc109 npn general purpose transistors. Free devices maximum ratings rating symbol value unit collectoremitter voltage vceo.
Ic cross reference cross reference ci stk cross reference ci tda cross reference ci sharp cross reference hitachi audio ic cross reference and circuit applications smd cross reference and equivalent we make every effort to ensure that the material on this site is accurate, however we do not warrant or represent that the information is free. The datasheet is printed for reference information only. Directions for determining the thermal resistance rths for cooling fins can be found on page 11. Bc107 bc108bc109 low noise general purpose audio amplifiers description the bc107, bc108 and bc109 are silicon planar epitaxial npn transistors in to18 metal case. Free device maximum ratings rating symbol value unit collector. Semiconductor transistor, diode, ic cross reference. Transistor transistors for beginners in electronics.
The bc108 is a npn transistor in to18 metal package. Suitable for applications requiring low noise and good hfe linearity, eg. Bc108bc109 january 1989 low noise general purpose audio amplifiers the bc107, bc108 and bc109 are silicon planar epitaxial npn transistors in to18 metalcase. Preliminary first production this datasheet contains preliminary data, and supplementary data will be published at a. The bc107, bc108 and bc109 are generalpurpose low power silicon npn bipolar junction transistors found very often in equipment and electronics booksarticles from europe, australia and many other countries from the 1960s. Microelectronics, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. This data sheet and its contents the information belong to the members of the premier farnell group of companies the group or are licensed to it. They are suitable for use in driver stages, low noise input stages and signal processing circuits of television receivers. Mono preamp mic based bc108 transistor amplifier circuit.
The gain is set at 10 for better illustration, the minus means its inverted if the signal sounds distorted, it is likely that the wave is clipping. The bc107, bc108 and bc109 are generalpurpose low power silicon npn bipolar junction transistors found very often in equipment and electronics books articles from europe, australia and many other countries from the 1960s. Specifications may change in any manner without notice. Description the bc107, bc108 and bc109 are silicon planar epitaxial npn transistors in to18 metal case. Bc207 silicon npn transistor electronic components from. I can pop in this afternoon, and we can make the amplifier. Continental device india limited c120 naraina industrial area, new delhi 110 028, india. The name bc107 has to be decoded as below b silicon transistor. Bc108 bipolar bjt single transistor, general purpose, npn, 25 v, 150 mhz, 600 mw, 200 ma, 110 hfe. Bc107bc108 series low power bipolar transistors page 2 200406 v1. Ic 2ma, ib 0 bc107 bc108 45 25v emitterbase voltage vebo ie 10a, ic 0 bc107 bc108 6. Pinning pin description 1 emitter 2 base 3 collector, connected to the case fig. Continental device india limited datasheet catalog. Npn silicon planar epitaxial transistors, bc108 datasheet, bc108 circuit, bc108 data sheet.
Complete technical details can be found at the datasheet give at the end of this page. Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy. A selection of the most commonly used transistors and more. Bc108 datasheet, equivalent, cross reference search. Initially in metal to18 packages, the range expanded over time to include other package. The ouput of this circuit can be heard in a low impedance headphones. Bc108 datasheet low noise general purpose audio amplifiers. The bc108 is a low power general purpose npn transistor in a metal package. Initially in metal packages, the range expanded over time to include other package types, higher voltage ratings, and a better selection of gain groupings, as well as complementary pnp types. What are the specifications of bc107 or bc108 transistors.
This simple transistor amp is built around two bc108 transistors and few components. Inexpensive plastic packaged pn 2222a, 2n3904, 2n4401, or 2sc945 should all be acceptable substitutes. The bc141 is also a general purpose npn transistor in a metal package with a higher voltage rating probably unnecessary in your application and higher current rating. Bc108 low noise general purpose audio amplifiers description the bc107 and bc108 are silicon planar epitaxial npn transistors in to18 metal case.
They are suitable for use in driver stages, low noise input stages and. Bc212b amplifier transistors pnp silicon features these are pb. The complete specifications would be present in its datasheet. Bc547 is a npn transistor hence the collector and emitter will be left open reverse biased when the base pin is held at ground and will be closed forward biased. Audio amplifier circuit using two bc108 transistors. C transistor is used as a audio frequency amplifier the numerals 107 indicate the type npnpnp a. Bc107 datasheet, equivalent, cross reference search.
Mono preamp mic based bc108 transistor amplifier circuit december 20, 2011 the microphone preamp based transistor described here is powered by 9 v and less than 1 ma current consumption, it will allows you to use a small 9 v rectangular conventional battery for several hours. A bc108 transistor is an npn negativepositivenegative bipolar transistor. You can use any other substitute npn transistors in the place of. The naming of the three basic transistor configurations indicates the transistor terminal that is common to both input and output circuits. The generalpurpose range of transistors is a good substitute for basic noncritical audio applications, as these transistors are similar and equivalents to each other. On this basis the bc108 transistor was chosen as the h fe and the i c values fall well within those calculated. Bc108 low noise general purpose audio amplifiers description the bc107, bc108 and bc109 are silicon planar epitaxial npn transistors in to18 metal case. The next step is to calculate the value for the resistor placed between the base of the transistor and the switching current. Cdil bc108 cdil bc108 npn gp transistor small signal transistor with silicon planar construction, suitable for low noise general purpose audio javascript is currently disabled in your browser, please turn it on to avoid loss of functionality. The bc548 is a part of a family of npn and pnp epitaxial silicon transistors that originated with the metalcased bc108 family of transistors.
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