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Topic: PNP transistor

    Note: these results are not from the primary (high quality) database.

PNP from FOLDOC PNP transistors are commonly operated with the emitter at ground and the collector at a negative voltage. The voltages used on a PNP transistor are inverted when compared with vacuum tubes. Neither germanium nor PNP transistors are as common today. foldoc.org /?PNP   (164 words)

Zetex .:. Product .:. Discretes .:. Bipolar Transistors PNP 140V-200V - PNP high voltage transistors 140V to 200V PNP 300V-500V - PNP high voltage transistors 300V to 500V Transistor and Diode Combination - transistor & Schottky diode combination www.zetex.com /3.0/3-3-1.asp?tcatid=6   (156 words)

PNP A PNP transistor is formed by introducing a thin region of N-type semiconductor material between two regions of P-type material. A PNP transistor is "triggered" when its base is pulled low. Note that both PNP and NPN are TLAs. encyclobeamia.solarbotics.net /articles/pnp.html   (100 words)

Semiconductors N..-P.. in Warehouse of Donberg Electronics P7NC802 TRANSISTOR PHILIPS 32PW6006 / 25 REF 7521 = PNP 7NC802 93 17.99 OC604 TRANSISTOR GERMANIUM PNP / 22V / 0.05A / 0.05W 0.89 OC77 TRANSISTOR GERMANIUM PNP / 60V / 0.125A / 0.125W 3.90 www.donberg.ie /warehs/groupsn.htm   (1056 words)

Insulated Gate Bipolar Transistor Selector Guide IGBTs are constructed in such a way that first, the gate voltage is applied to form a channel and then the base current of the PNP transistor is supplied, letting the circuit turn on eventually as an IGBT. Consequently, the equivalent circuit and basic operating mechanism of IGBTs are the same as those of a MOS-input inverted Darlington transistor comprised of an N-channel enhancement MOSFET in its input stage and a PNP transistor on the output stage. The thyristor fromed by PNP - NPN transistor coupling has its base and emitter shorted by aluminum patterning to disable it from operating and is therefore considered irrelevant to the basic operation of IGBTs. www.nteinc.com /Web_pgs/igbt.html   (203 words)

PNP Characteristic Curves The behavior of a PNP bipolar transistor is largely controlled by the current flowing out of the base. In fact, the PNP transistor is not designed to be operated with positive V PNP, we've reversed the direction of current flows (so currents are negative -- flowing out of the collector and base in a PNP) and the required supply voltage becomes negative for a PNP. www.physics.csbsju.edu /trace/PNP.CC.html   (608 words)

Transistor de Darlington - Wikipédia Le transistor Darlington est la combinaison de deux transistors bipolaires de même type (tous deux NPN ou tous deux PNP), résultant en un composant hybride qui a encore des caractéristiques de transistor. Il existe une autre combinaison associant un transistor NPN et un PNP qui multiplie aussi les gains. Le gain en courant du Darlington est égal au produit des gains de chaque transistor. fr.wikipedia.org /wiki/Transistor_de_Darlington   (241 words)

Cell library for PREMA ASICs with photo diodes, hall sensors NPN-HV and PNP-HV high voltage transistors, and NPN-VHV and PNP-VHV very high voltage transistors with a breakdown voltage of V Photo transistors with maximum sensitivity in the visible range. Junction field effect transistors (JFETs) with a breakdown voltage of 35 Volts and threshold voltages between 600 and 1000 mV. www.prema.com /Design/cell-library.html   (196 words)

Samsung Electronic TIP126 Series Datasheets. TIP141T, TIP140T, TIP142F, TIP127, TIP126, TIP140F, TIP142T, TIP141F Datasheet. -80 V, -5 A, PNP epitaxial silicon darlington transistor in 3-pin TO-220 package. -100 V, -5 A, PNP epitaxial silicon darlington transistor in 3-pin TO-220 package. 60 V, 10 A, NPN epitaxial silicon darlington transistor in 3-pin TO-220 package. www.chipdocs.ru /datasheets/datasheet-pdf/Samsung-Electronic/TIP126.html   (125 words)

Transistors - Bipolar Transistors The behavior of a PNP bipolar transistor is largely controlled by the current flowing out of the base. Transistors Some types that are particularly useful for BEAM robots Bipolar transistors Normally, BEAMbots use small signal transistors: PNP -- 2N3906 (see datasheet for details), BC327-25 NPN... This transistor is better at handling multiple strong signals than integrated circuits or bipolar transistors (used in most other radios). transistors.electronic-components-info.info /bipolartransistors   (125 words)

Page 1. Semiconductor parts with 666 in root number Emitter to base voltage:5V 10A PNP epitaxial planar transistor for general-purpose amplifier and switching applications PNP transistor for power amplifier and power switching applications Silicon NPN transistor for audio frequency amplifier applications and switching applications www.chipdocs.ru /pndecoder/number/666.html   (894 words)

Research Papers "Direct-current Characteristics of pnp AlGaN/GaN Heterojunction Bipolar Transistors”, "Degradation of GaAs/AlGaAs Heterojunction Bipolar Transistors with Ion-Implant Isolation”, "Carbon and Tin Doped npn and pnp AlGaAs/GaAs HBTs Grown by MOMBE," ren.che.ufl.edu /papers.html   (894 words)

Semiconductors datasheet Parts begin by MS Page5 MSB1218ART1 : PNP General Purpose Amplifier Transistors Surface Mount MSB1218A-ST1 : PNP General Purpose Amplifier Transistors Surface Mount MSAGA11F120D : Insulated Gate Bipolar Transistor, Package : Die www.digchip.com /datasheets/parts/ms/parts_ms05.php   (673 words)

PNP Transistor Operation - The reverse-biased junction in a PNP transistor. - The forward-biased junction in a PNP transistor. Although current flow in the external circuit of the PNP transistor is opposite in direction to that of the NPN transistor, the majority carriers always flow from the emitter to the collector. www.tpub.com /neets/book7/25b.htm   (1032 words)

Transistors - Encyclopedia.WorldSearch The PNP point-contact germanium transistor operated as a speech amplifier with a power gain of 18 in that trial. In bipolar transistors, the semiconductor is formed into structures called p-n junctions that allow electricity to flow in only one direction through them – that is, they are a conductor when voltage is applied in one direction, and an insulator when it is applied in the other direction. Bipolar transistors are so named because the main conduction channel uses both electrons and holes to carry the main electric current. encyclopedia.worldsearch.com /transistors.htm   (4924 words)

Transistor Transistors are either NPN or PNP in the configuration of the layers. For example, very weak radio signals in the air can be picked up by a wire antenna and processed by transistor amplifiers until they are strong enough to be heard by the human ear. A transistor is a small electronic device that can cause changes in a large electrical output signal by small changes in a small input signal. www.101science.com /transistor.htm   (614 words)

Transistor Transistors are either NPN or PNP in the configuration of the layers. A transistor is a small electronic device that can cause changes in a large electrical output signal by small changes in a small input signal. The transistor was invented at Bell Laboratories in December... www.101science.com /transistor.htm   (609 words)

The Insulated Gate Bipolar Transistor (IGBT) The operation of the IGBT can therefore be considered like a wide-base pnp transistor whose base drive current is supplied by the MOSFET current through the channel. It is this conductivity modulation which gives the IGBT its low on-state voltage because of the reduced resistance of the drift region. The structure is very similar to that of a vertically diffused MOSFET featuring a double diffusion of a p-type region and an n-type region. www.elec.gla.ac.uk /groups/dev_mod/papers/igbt/igbt.html   (677 words)

Electronics 2 Since pnp transistors depend on the flow of holes, which is not as easy as that of electrons in silicon, their characteristics are a little inferior to those of npn transistors. The Insulated-Gate Bipolar Transistor or IGBT is a Darlington connection with a MOS transistor input and a bipolar output. Although all transistors are similar, the fact that there are so many different types is bad news--as in operational amplifiers, it means that the transistor type must be carefully chosen to suit the application. www.du.edu /~etuttle/electron/elect2.htm   (6307 words)

Simultaneous fabrication of CMOS transistors and bipolar devices - Patent 4050965 A process for the manufacture, on the same chip, of CMOS transistors, which are characterized as being unipolar, and NPN or PNP transistors which are bipolar devices. The bipolar transistors also were not lateral and did not take advantage of the poly-silicon mask as in the present invention. It is emphasized that the fabrication sequence for a lateral bipolar transistor is shown in FIGS. www.freepatentsonline.com /4050965.html   (1057 words)

Bipolar Junction Transistors (BJT) For the PNP transistor, the voltage potential of the emitter must be more positive than the voltage potential of the base to forward bias the base-emitter junction. The general operation of a transistor is as a variable resistor with the base terminal of the transistor functioning as the controlling input. Once the saturation current is reached, the transistor operates in the saturation region and the current in the collector remains constant. www.hcc.hawaii.edu /~sdunan/cent112/notes/06FTransistors   (1991 words)

ARTICLE BY BRUCE CARSTEN A small current supplied to the base of the NPN transistor (the gate of the SCR) becomes amplified by the gain of the NPN and drives the base of the PNP, where it is further amplified and added to the original NPN base current. Transistor current gains are intentionally limited, particularly at low current, and base-emitter shunting resistances are built in, at least on the gated transistor (Rs in Fig. It was found that the bipolar transistor has the best combination of characteristics, including direct control of minority carrier injection, ability to accelerate turn off with reverse base current, and normally off behavior. www.power-tech.com /cartext.htm   (4283 words)

Bipolar Junction Transistors In a PNP transistor the majority charge carriers are holes and germanium is favoured for these devices. The schematic circuit symbols for bipolar transistors are shown in figure 5.1. Next: Transistor Operation (NPN) Up: Transistor Circuits Previous: Transistor Circuits www.phys.ualberta.ca /%7Egingrich/phys395/notes/node75.html   (204 words)

STMicroelectronics Power Bipolar Transistors Consumer In addition to our well-known STT818B, ST is offering a variety of PNP bipolar transistors, which, due to their electrical characteristics, have been specifically designed for use as final switches for power management circuitry. As a leading expert in power bipolar transistors for TVs and monitors, ST is reinforcing the promotion of BU808DFI as an innovative and popular solution for horizontal deflection stage in TVs up to 21”. Following the market demand for optimized electronic solutions, by improving circuit efficiency, saving the space and reducing the component count on the board, ST is introducing a new series of dual bipolar transistors in a single package suitable for driving functions. www.us.st.com /stonline/prodpres/discrete/powebipo/consumer.htm   (625 words)

Bipolar junction transistor Bipolar transistors are classified as either NPN or PNP according to the arrangement of their N-type and P-type materials. Note that the bipolar transistor is a current-amplifying device, unlike the vacuum tube and the field-effect transistor (FET), both of which depend upon voltage changes to operate. Bipolar transistors are made from 3 sections of semiconductor material (alternating P-type and N-type), with 2 resulting P-N junctions. encyclobeamia.solarbotics.net /articles/bip_junct_trans.html   (783 words)

Transistor - Encyclopedia.WorldSearch The PNP point-contact germanium transistor operated as a speech amplifier with a power gain of 18 in that trial. Transistor was also the common name in the sixties for a transistor radio, a pocket-sized portable radio that used transistors (rather than vacuum tubes) as its active electronic components. In bipolar transistors, the semiconductor is formed into structures called p-n junctions that allow electricity to flow in only one direction through them – that is, they are a conductor when voltage is applied in one direction, and an insulator when it is applied in the other direction. encyclopedia.worldsearch.com /transistor.htm   (4924 words)

PNP power darlington transistor (surplus) This is a heavy-duty PNP darlington transistor (10 A max). You can expect this product to be in good working condition, but it can show signs of being handled, shipped, repackaged etc. The supply of a surplus article can suddenly run out, or the price can change. www.voti.nl /shop/p/T-TIP146.html   (63 words)

BCP48 fiche technique pdf - Transistors de Darlington - transistor de Darlington de silicium de PNP pour des applications générales d'cAf - Infineon Transistors de Darlington - transistor de Darlington de silicium de PNP pour des applications générales d'cAf BCP48 fiche technique pdf - Transistors de Darlington - transistor de Darlington de silicium de PNP pour des applications générales d'cAf - Infineon www.datasheetcatalog.net /fiche+technique/B/C/P/4/BCP48   (39 words)

kleine PNP darlington transistor voor algemene toepassingen Dit is een kleine PNP darlington transistor, geschikt voor algemeen gebruik (100 mA max). www.voti.nl /winkel/p/T-BC516-10.html   (27 words)

transistor photo on GlobalSpec Brattain and Bardeen's pnp point-contact germanium transistor operated as a speech amplifier with a power gain of 18 on December 23, 1947. RF Transistors (43 companies) that are suitable for commercial or industrial applications. Darlington transistors are circuits that combine two bipolar transistors in a single device. optoelectronics.globalspec.com /Industrial-Directory/transistor_photo   (1512 words)

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