Bf494 transistor equivalent books

The bc548 is a generalpurpose npn bipolar junction transistor commonly used in european. Motorola smallsignal transistors, fets and diodes device data 5 package dimensions notes. Bf494 datasheet, equivalent, cross reference search. Our payment security system encrypts your information during transmission. If its in an rf circuit, then be sure the ft is at least 120mhz, and that it has a low cre. Product specification supersedes data of september 1994 file under discrete semiconductors.

Unit icbo collector cutoff current ie 0 for bf 457 for bf 458 for bf 459 vcb 100 v vcb 200 v vcb 250 v 50 50 50 na na na vbrceo collectoremitter breakdown voltage ib 0 ic10ma for bf 457. Discrete semiconductors data sheet book, halfpage m3d186 bf494. Searching the right transistor for substitution is a skill, if you replace wrong specifications of transistor into the equipment. Buy international transistor equivalents guide bernard babani publishing radio and electronics books by michaels, adrian isbn. Fm receiver electronics circuit with full explanation.

Heres a simple fm receiver with minimum components for local fm reception. Great performance or range is not guaranteed here, because this is an elementary design. Transistor pnp germanium 32v 1a to1 medium driver order for or more ship same day or within 48hrs. Home components hardware boards books kits futurlec the electronic components and semiconductor superstore. Npn rf transistor, bf494 datasheet, bf494 circuit, bf494 data sheet. The bf4945 are good bets, but these are obsolete, so youre looking for nos. Smallsignal transistor data book, 86 pages, 1984, motorola. Transistor bf495 t2, together with a 10k resistor r1, coil l, 22pf variable capacitor vc, and internal capacitances of transistor bf494 t1, comprises the colpitts oscillator the resonance frequency of this oscillator is set by trimmer vc to the frequency of the transmitting station that we wish to listen. Bf494, bf494 datasheet, bf494 npn medium frequency transistor datasheet, buy bf494 transistor. We use cookies to deliver the best possible web experience and assist with our advertising efforts. A to5 transistor with a p d of 3 watts might be able to dissipate 810 watts with a heat sink. Bf199 npn medium frequency transistor dbook, halfpage m3d186.

Fairchild, alldatasheet, datasheet, datasheet search site for electronic components and. Simplest fm transmittermodulation circuit with bf494. We dont share your credit card details with thirdparty sellers, and we dont sell your information to others. By continuing to use this site, you consent to the use of cookies. This is a pdf format of the well known hardware pinout book, which covers various computer, electrical and electronic item pinouts. So any substitution is made easier by finding a device that follows that.

Bf494 bf494b npn medium frequency transistorbuy online electronic components shop wholesale best lowest price india. Vrt comparison table for semiconductors from a to z. Bf495 bf495 transistor transistor bf494 transistor bf495 bf494 transistor equivalent transistors bf494 bf494 equivalent bf494b bf494 application note text. Bf494 bf494 npn medium frequency transistor datasheet buy.

General purpose radio frequency transistor bf 494 q1 is used here for obtaining fm modulation. Bf494 npn medium frequency transistors components datasheet pdf data sheet free from datasheet data sheet search for integrated. The philips datasheet shows the transistor from the bottom the side where the pins come out of the package. Bf450 pnp medium frequency transistor book, halfpage m3d186. Follow asked 4 years ago by vikasgurlinka in circuits. International transistor equivalents guide bernard babani. Bf495 datasheet, equivalent, cross reference search. Bf495 npn medium frequency transistors 1997 jul 08 product. 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. Buy international transistor equivalents guide bernard babani publishing radio and electronics books by adrian michaels isbn. The frequency is the the frequency at which the gain drops to 1, as long as the replacement transistor has enough gain at the frequency used in the circuit, it doesnt matter, as a general rule higher is better. Book this book does not require a rating on the quality scale.

Bf494d datasheet, equivalent, cross reference search. Semiconductors data sheet book, halfpage m3d186 bf494. Everyday low prices and free delivery on eligible orders. I choosed to make cirquit number 2 the one with reduced background noise. Bf494 datasheet23 pages fairchild npn rf transistor. Bf494, bf494 npn medium frequency transistor, buy bf494 transistor. Reference books on integrated circuits, microcontrollers and transistors. Cross reference universal transistor reference page 1. Transistors substitutionsequivalents all about circuits. In this case the transistor is designed for low current operation so you need one with a similar gain at 1ma.

Wikipedia books can also be tagged by the banners of any relevant wikiprojects with classbook. The first problem with the bf1945 is the unusual pinout, which puts the emitter in the middle. Product specification supersedes data of september 1994 file under discrete semiconductors, sc04 1997 jul 08. All electronic repairers should know how to read the transistor cross reference equivalent book if they want to succeed in electronic repairs. Understanding transistor cross reference, equivalent.

Hilitchi 250piece 10 values npn pnp power general purpose. 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. Applications output stage of a vision if amplifier. Download ic database equivalent guide 100 thousand. Overview bf494 npn medium frequency transistor international shipping starts from usd. Bf494 datasheet, bf494 pdf, bf494 data sheet, bf494 manual, bf494 pdf, bf494, datenblatt, electronics bf494, alldatasheet, free, datasheet, datasheets, data sheet. Applications hf applications in radio and television receivers fm tuners. Cross reference electronic circuits, tv schematics, audio. Wikipedia books are maintained by the wikipedia community, particularly wikiproject wikipedia books. Here is the circuit diagram of the simplest fm transmitter using a transistor. Free device maximum ratings rating symbol value unit collector.

Bf422 high voltage transistors npn silicon features this is a pb. Bf494 transistors datasheet pdf frequency transistors. The local electronics shop did not have the transistor bf494,so i put 2n3904. Semiconductor transistor, diode, ic cross reference. Heat sinks and fans increase the ability of a transistor to dissipate heat. It looks like a pretty generic npn transistor, so unless the circuit is picky, id expect pretty much any generic npn would be fine, so long as you pay attention to what the circuit demands are. Thus the bc548 or bc546 to 550 is a valid substitute in any circuit designed for the older bc108 or bc148, which includes many mullard and philips. Bf495 npn medium frequency transistors 1997 jul 08 product specification. But there is one big problemthe tuning does not work at all. Maximum power, called p d, is the overall power a transistor can dissipate, through heat, without burning up. This is a wikipedia book, a collection of articles which can be downloaded electronically or ordered in print. Bf495 limiting values in accordance with the absolute maximum rating system iec 4. Substitute with the correct part number, the equipment will work for a long time and sometimes the substitute transistor will even work better than the original part number. Understanding transistor replacement, substitution and.