For audio use, the bc147, bc148 and the bc149 were very popular as far as i can tell, the silicon inside each of these is the same as was fitted to the ubiquitous bc10789 transistors which were in the metal to18 can. It actually must mean noise figure, rather than noise factor. Bf194 bf194 bf195 npn transistor components datasheet pdf data sheet free from datasheet data sheet search for integrated. See detailed ordering and shipping information in the package dimensions section on page 2 of this data sheet. This data booklet is intended for use by candidates in examinations in engineering science at higher. Bf422 high voltage transistors npn silicon features this is a pb. Bf495 datasheet, equivalent, cross reference search. Bcw60 series npn general purpose transistors nexperia. Tuned amplifier using ift choose transistor bf 194195. Bf199 npn medium frequency transistor dbook, halfpage m3d186.
Full text of national databooks 1982 national transistors databook see other formats. Sn76477 2n4401 free transistor equivalent book semiconductor. As noted earlier, they are the same transistor, but packaged differently. Bf495 npn medium frequency transistors 1997 jul 08 product specification supersedes data of september 1994 file under discrete semiconductors, sc04 philips semiconductors product specification npn medium frequency transistors bf494. Methinks you need to study electronics more deeply. Tube bf 194 or rohre bf194 id34990, transistor, wires and vhf shown. Mat04 is individually tested to data sheet specifications. Bf197 datasheet, equivalent, cross reference search.
Here is the circuit diagram of the simplest fm transmitter using a transistor. For matching parameters offset voltage, input offset current, and gain match. Additionally, its worth remembering that many transistors either work completely or fail entirely. You know, the ones that plot vcc, qpoint, bias current, test condition sample circuits etc i remember seeing them on the sheets from phillipsecg years ago before i knew what they were while i was playing parts runner for a retired zenith engineer. It is recommended that candidates should become familiar with the contents of the data booklet through use in undertaking units of these courses. This data booklet is intended for use by candidates in examinations in engineering science at advanced higher. I agree that we might not have hard data about this, but there is plenty of pretty convincing anecdotal evidence out there. Description npn medium frequency transistor in a to92. The reference data booklet contains the schedule to the licence, which may be used to help answer any question. It must be completed during the time allowed for the examination. Sn76477 2n4401 free transistor equivalent book semiconductor data handbook mj802 2n3866 s2p tis43 bc149c xr2206 application notes lm1 siemens transistor. Analog and digital communication viva questions am generation.
Free device maximum ratings rating symbol value unit collector. Bf194 datasheet, bf194 pdf, bf194 data sheet, bf194 manual, bf194 pdf, bf194, datenblatt, electronics bf194, alldatasheet, free, datasheet, datasheets. Bf194 bf195 transistor bf194 bf594 bf197 bf595 bf576 bf597 tis43 alternative text. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify philips for any damages resulting from such improper use or sale. Sn76477 2n4401 free transistor equivalent book semiconductor data handbook mj802 2n3866 s2p tis43 bc149c xr2206 application notes lm1 siemens transistor manual. Discrete semiconductors data sheet book, halfpage m3d186 bf494. The transistor im testing was made by motorola and is a know good working device in the current application circuit, in which i desoldered the transistor from. Simplest fm transmittermodulation circuit with bf494. Home actives transistor transistor silicon npn bf194.
This resulted in what is clearly the most colourful set of semiconductors produced by any manufacturer. Bf194 bf195 transistor bf194 bf594 bf197 bf595 bf576 bf597 tis43 alternative. It may also be used as a reference for assignments at higher. Bf199 datasheet, bf199 pdf, bf199 pinout, equivalent, replacement npn silicon transistor multicomp, schematic, circuit, manual. Transistors bcserie bc107 bc108 bc109 bc140 bc141 bc147 bc160 bc161 bc177 bc237 bc307 bc327 bc337 bc516 bc517 bc546 bc547 bc548 bc549 bc550 bc556 bc557 bc558 bc559 bc560 bc635 bc636 bc639 bc640 bc807 bcy58 bcy59 bcy70 bcy71 bcy79. Bf194 equivalent datasheet, cross reference, circuit and application notes in pdf.
Full text of national semiconductor discrete databook 1978. Data, documents or diagrams used in the book which were taken from external sources are linked to. It may also be used as a reference for assignments at advanced higher. Full text of national semiconductor discrete databook 1978 see other formats. Pdf bf594 bf594, bf194 bf595 bf195 bf597 bf197 tis43 bf194 bf195 transistor bf194 bf594 bf197 bf595 bf576 bf597 tis43 alternative. Bf998r limiting values in accordance with the absolute maximum rating system iec 4.
Thornaei lowpower transistors nearly all had a plastic sleeve, although a few were unsleeved for use in a heatsink. When did they stop putting all the little graphs on transistor datasheets. Back to my question, i looked at the spec sheets and it looks like the transistors i used should work. The colour of the sleeve is specific to the part number, and is listed in the data booklet. Transistors bdserie bd1 bd2 bd5 bd6 bd7 bd8 bd9 bd140 bd201. Bf 194 npn transistor datasheet, cross reference, circuit and application notes in pdf format.
Bf195 datasheet, bf195 pdf, bf195 data sheet, bf195 manual, bf195 pdf, bf195, datenblatt, electronics bf195, alldatasheet, free, datasheet, datasheets, data sheet, datas sheets, databook, free datasheet. Experimentally find out the side band power that would be delivered to. The optical mark sheet is designed to be machine marked and will provide the result for this examination. No data bf194 1 bf1961 bf1971 bf1981 bf1996 start with no data bf19. Bf194 datasheet, bf194 pdf, bf194 data sheet, bf194 manual, bf194 pdf, bf194, datenblatt, electronics bf194, alldatasheet, free, datasheet, datasheets, data sheet. When i apply 400 mhz, the transistor oscillates wildly and gets very hot.
Bf194 datasheet, bf194 pdf, bf194 pinout, equivalent, replacement bf194 bf195 npn transistor value, schematic, circuit, manual. Bf194 datasheet, bf194 pdf, bf194 data sheet, datasheet, data sheet, pdf. Bf194 datasheet, equivalent, cross reference search. The other thing looked for were curves showing voltage versus current gain and no matter which site i opened on the bf 194 or a 2n2222, nothing was provided with curves. Bc637 high current npn transistors on semiconductor. Applications output stage of a vision if amplifier. General purpose radio frequency transistor bf 494 q1 is used here for obtaining fm modulation. Great performance or range is not guaranteed here, because this is an elementary design. Only after i tune the capacitors do i get 9 db out at 175 mhz.
Tuned amplifier using ift choose transistor bf 194 195. In rf and if stages, the bf194 and bf195 were popular. Bf196 datasheet, cross reference, circuit and application notes in pdf format. I have no idea why the curve data is missing unless the manufacture assumes that the designer has curve tracer test equipment available. The mullard data handbook system is made up of three sets of books, each. Bf194 datasheet pdf pinout bf194 bf195 npn transistor.