Im building a pedal that uses an nchannel jfet in its buffer section, and it recommends using either a j201 or an mpf102. Be the first to know about our newest products, specials and promotions. Jfets are lowpower devices with a very high input resistance and invariably operate in the depletion mode, i. Channel for higher gain drain and source interchangeable high ac input impedance high dc input resistance low transfer and input capacitance low cross. Mpf102 g to92 s d nchannel rf amplifier this device is designed for electronic switching applications such as low on resistance analog switching. Semiconductor transistor, diode, ic cross reference.
J1 jfet replaces mpf102 genuine fairchild guitarpcb. Basic semiconductor physics, diodes, the nonlinear diode model, load line analysis, large signal diode models, offset diode model, transistors, large signal bjt model, load line analysis, small signal model and transistor amplification. The j1 will do everything the mpf102 will do and is a perfect replacement for this transistor in any of our circuits. 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. Nchannel rf amplifier, mpf102 datasheet, mpf102 circuit, mpf102 data sheet. Free package is available maximum ratings rating symbol value unit drain. Jfets are available at mouser electronics from industry leading manufacturers. Jfets are threeterminal semiconductor devices that can be used as electronicallycontrolled switches, amplifiers, or voltagecontrolled resistors unlike bipolar transistors, jfets are exclusively voltagecontrolled in that they do not need a biasing current. At room temperature, jfet gate current the reverse leakage of the gatetochannel junction is comparable to that of a mosfet which has insulating oxide between gate and channel, but much less than the base current of a bipolar junction transistor. The junction field effect transistor or jfet is widely used in electronics circuits.
Jfet vhf amplifier, mpf102 datasheet, mpf102 circuit, mpf102 data sheet. I think you want to calculate the quiescent current when the idss of the jfet is many different values. Diodes and transistors pdf 28p this note covers the following topics. The jfet is currently no longer in production but till the demand for it has created many clones in the market. This is an obsolete draft version of book manuscript. This datasheet contains specifications on a product that has been discontinued by fairchild semiconductor. Radio shack once sold four nte equivalents for the mpf102. The operating characteristics of a transistor are all found on its data sheet. Mpf102 equivalent transistor mpf102 jfet mpf102 fet 2n4221. Complete technical details can be found at the mpf102 datasheet given at the end of this page. Get the best deals on motorola nchannel jfet transistors when you shop the largest online selection at. Mpf102 pdf, mpf102 description, mpf102 datasheets, mpf102.
Datasheet catalog for electronic components integrated circuit, transistor, diode, triac, and other semiconductors page 26290. Although the software seems a bit ugly design running on dos, but it works perfectly with the database with many components and is free, makes an interesting tool to interested in electronics, want to know when information about a particular component or find a replacement the operation is quite simple and is separated by categories such as. Details about us stock 10pcs mpf102 mpf102g to92 jfet 25v 10ma transistor new us stock 10pcs mpf102 mpf102g to92 jfet 25v 10ma transistor new item information. The jfet is currently no longer in production but till the demand for it has created. The jfet has higher gain transconductance than the mosfet, as well as lower flicker noise. Pchannel depletion mode field effect transistor datasheet. What if you need a replacement jfet, but none of the parts ive mentioned is available. Jameco electronics 2n5457 transistor to 92 jfet, n channel, 25v, 1. A fielde ect transistor fet has a gate g terminal which controls the current ow between the other two terminals, viz. The ability of a jfet to amplify is described as transconductance and is merely the change in drain current divided by the change in gate voltage.
It is indicated as mhos or siemens and is typically 2. Source voltage vgs 25 vdc gate current ig 10 madc stresses exceeding those listed in the maximum ratings table may damage the device. Technical information motorola semiconductor mpf102 datasheet. Texas instruments transistor and diode databook 1st ed 1973 datasheets for diodes from 1n251 on and transistors from 2n117 on acrobat 7 pdf 34. It works at much higher frequencies than the typical af jfets or the low rf jfets like mpf102, and can sustain higher voltage 30v making it more desirable for af applications as ccs. Jfet devices tyoically have relatively high saturation voltages, much higher than wuld be. Major brands mpf102 transistor jfet n channel 3pin to92 bulk 3. Datasheets for the nte parts and the fairchild j1 are available online. Mpf102, mpf102 datasheet, mpf102 jfet nchannel transistor datasheet, buy mpf102 transistor. Us stock 10pcs mpf102 mpf102g to92 jfet 25v 10ma transistor. Look at the huge range of idss in its datasheet, from 2ma to 20ma. If you need to shield your jfet from stray rf fields, you should ground the case pin. This design was also used in 1995 as the main vfo in a transceiver design, using ne602a as a mixer. Mpf102 pin out mpf102 application note mpf102 d text.
Check the gatetosource voltages, the sources should be a couple of volts more positive than the gates. Fieldeffect transistors fets are unipolar devices, and have some big advantages over bipolar transistors. Mpf102 datasheet, mpf102 datasheets, mpf102 pdf, mpf102 circuit. Mpf102 datasheet28 pages motorola jfet vhf amplifier. The mpf102 is a jfet that has been used in many amplification circuits because of its low price. Motorola jfet vhf amplifier,alldatasheet, datasheet, datasheet search site for electronic. Free, halogen freebfr free and are rohs compliant maximum ratings rating symbol value unit drain.
The junction field effect transistor is a reliable and useful electronic component that can be used very easily in a variety of electronic circuits ranging from jfet amplifiers to jfet switch circuits. Jameco will remove tariff surcharges for online orders on instock items learn more. This datasheet contains the design specifications for product development. If you can find datasheets online, you can make educated guesses about which parts will work. Specifications may change in any manner without notice.
Motorola order this document semiconductor technical data by mpf102 d jfet vhf amplifier nchannel depletion mpf102 1 drain 3 gate 2 source maximum ratings rating symbol value unit drainsource voltage vds 25 vdc 1 2 3 draingate voltage vdg 25 vdc gatesource voltage vgs 25 vdc case 2904, style 5 gate. Mpf102d mpf102 preferred devices jfet vhf amplifier n. Check for a match on the target devices i dss spec. Channel junction field effect transistors, depletion mode type a designed for audio and switching applications. General purpose nchannel junction field effect transistor.
Mpf102 motorola transistor jfet nchannel to92 qty 2 nos. Mpf102 on semiconductor datasheet and cad model download. Channel features drain and source are interchangeable s prefix for automotive and other applications requiring unique site and control change requirements. Mpf102 mpf102 jfet nchannel transistor datasheet futurlec. Fairchild, alldatasheet, datasheet, datasheet search site for electronic components and. Mpf102 datasheet18 pages motorola jfet vhf amplifier. Obsolete not in production this datasheet contains specifications on a product that has been discontinued by fairchild semiconductor. Transistor jfet mpf102 manual sonigate by sonigate issuu. Fet principles and circuits, part 1 to 4, by ray martson, nuts and. This fourpart series takes a close look at fets, their basic operating principles, and practical ways of using them. Mpf102 d mpf102 preferred devices jfet vhf amplifier n. Onsemi, alldatasheet, datasheet, datasheet search site for electronic components and.
The junction gate fieldeffect transistor jfet is one of the simplest types of fieldeffect transistor. Mpf102 datasheet48 pages motorola jfet vhf amplifier. Unfortunately, my local electronics shop doesnt carry either, but they do have 2n3819s and bf245as. These parts were available over the web, with free shipment to your local store. Absolute maximum ratings ta25 degree c unless otherwise noted symbol parameter value units v dg draingate voltage 25 v v gs gatesource voltage 25 v igf forward gate. A more elaborate hartley design with a buffer and regulated power supply to the oscillator fet q1. Rating drain source voltage drain gate voltage gatesource voltage gate current total device dissipation 25c derate above 25c junction temperature range storage temperature range symbol vds vdg vgs 2. Make sure c3 is near the coil and the entire three jfet circuit is compact. Jfet, conociendo las caracteristicas del transistor jfet.
Free, halogen freebfr free and are rohs compliant maximum ratings rating. Fieldeffect transistors control the current between source and drain connections by a voltage applied between the gate and source. Jfet junction field effect transistor electronics notes. Mpf102 mixer av rf modulator ic data book free download 2n2222a plastic. Motorola, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. The datasheet does not have enough information to accurately calculate it. Datasheet catalog for electronic components integrated. The junction fieldeffect transistor jfet as a switch. Yet since radio shacks 2015 reorganization, the web site can no longer fix you up with these equivalents. Find the pdf datasheet, specifications and distributor information.
I found the bf247 jfet in multisim but idk if it is equivalent to the mpf102. Motorola order this document semiconductor technical data by mpf102 d jfet vhf amplifier nchannel depletion mpf102 1 drain 3 gate 2 source maximum ratings rating symbol value unit drainsource voltage vds 25 vdc 1 2 3 draingate voltage vdg 25 vdc gatesource voltage vgs 25 vdc case 2904, style 5 gate current ig 10 madc to92. Go to the vendors catalog page for the jfet type that you want to investigate. In simple terms, a fet can be thought of as a resistance connected between s and d, which is a function of the gate voltage v g. Compare pricing for on semiconductor mpf102 across 2 distributors and discover alternative parts, cad models, technical specifications, datasheets, and more on octopart. Fairchild semiconductor reserves the right to make changes at any time without notice in order to improve design. If you cant find this spec, download the device datasheet. Electronics component datasheets fet, jfet, mosfet etc. Basic characteristics of the 2n3819 and mpf102 nchannel jfets. No identification needed full production this datasheet contains final specifications. Do not attempt to view the rest of mpf102 datasheet, but return back to j111.
Major brands mpf102 transistor jfet n channel 3pin to92. Mpf102 cross reference electronic circuits, tv schematics. An evaluation of junction fieldeffect transistors suitable. Here are some jfet manufacturers foundries and vendors to check. The on semiconductor datasheet for the mpf102 does not specify a pinchoff voltage, but the fairchild datasheet says the pinchoff voltage can be as high as 8 volts. Q101 qualified and ppap capable these devices are pb. Mpf102 jfet n channel transistor tayda electronics.
The types of jfet are nchannel fet and pchannel fet. This device is designed for electronic switching applications such as low on resistance analog switching. This sounds like a mosfet, and indeed jfets are closely related to. In a junction fieldeffect transistor jfet, there is a pn junction between the gate and source which is normally reversebiased for control of sourcedrain current. This page explains how i chose four parts from radio shack and mouser that tested pretty close to an mpf102.
Download ic database equivalent guide 100 thousand. Only the nte457 and j1 have the same pinout as the obsolete mpf102. This item major brands mpf102 transistor jfet n channel 3pin to92 bulk 20pcs 2n5457 jfet nch gp 10ma to92 20pcs 2n5458 ic jfet nch ss gp 25v to92. Mpf102 datasheet, mpf102 pdf, mpf102 data sheet, mpf102 manual, mpf102 pdf, mpf102, datenblatt, electronics mpf102, alldatasheet, free, datasheet, datasheets, data. Trask, jfet transistor evaluation 3 4 december 2008 fets are generally sqaurelaw devices, and the device should be biased away from the point where the variation in g m becomes noticable. Mpf102 jfet mpf102 equivalent transistor mpf102 transistor mpf102 jfet data sheet 2n3797 mpf102 fet 2n3797 equivalent mpf102 equivalent p channel 2n4221 motorola text. Mpf102 nchannel rf amplifier learning about electronics. Need to know if the part can handle the frequency or give you the gain you need, look at the data sheet.
Junction field effect transistor jfet the single channel junction fieldeffect transistor jfet is probably the simplest transistor available. The clone fets available in the market does not seem to follow the datasheet strictly. Basic electronics jfet the jfet is abbreviated as junction field effect transistor. Chapter 4 jfets high input resistance amplifier wiki. Rf small signal fieldeffect transistor, 1element, silicon, nchannel, junction fet, to92 find equivalent parts. Circuits like the stage 3 booster, v6, sd70s and angry red camel will thank you for an authentic replacement that works just as powerfully as the original nos. Input admittance yis datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits. The datasheet is printed for reference information only. Jfet amp nch rf ss to92 online from elcodis, view and download mpf102 pdf datasheet, rf fets specifications. Mpf1022motorola smallsignal transistors, fets and diodes device datapower gain2. Sep 09, 20 make sure c3 is near the coil and the entire three jfet circuit is compact. Last months opening episode explained among other things the basic operating principles of jfets.
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