Silicon unijunction transistor, 2n2646 datasheet, 2n2646 circuit, 2n2646 data sheet. Message 8 of this application is important for large ac current control. Pnp epitaxial silicon transistor absolute maximum ratings ta25c unless otherwise noted these ratings are limiting values above which the serviceability of any semiconductor device may be impaired. Silicon pn univunction transistor, 2n2646 datasheet, 2n2646 circuit, 2n2646 data sheet. Unijunction transistor and ujt relaxation oscillator. Npn, silicon, switching, lowpower type 2n706 this amendment forms a part of military specification mlls19500120c.
Technical information philips semiconductors 2n2646 datasheet. The data sheet for a 2n2646 unijunction transistor gives the intrinsic standoff ratio. General electric solid state datasheet pdf catalog first. A unijunction transistor ujt is a threelead electronic semiconductor device with only one junction that acts exclusively as an electrically controlled switch. 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. Asi, alldatasheet, datasheet, datasheet search site for electronic components. Attention must be paid to how the transistor is being used and its requirements in the circuit. Recent listings manufacturer directory get instant insight into any. The transistor emitter follower circuit is equivalent to the vacuum tube cathode. Buy magnatec 2n2646 ujt transistor, 3pin to18 2n2646. Directions for determining the thermal resistance rths for cooling fins can be found on page 11. Philips, alldatasheet, datasheet, datasheet search site for electronic.
The device is popular as a triggering device and is not suited for driving power loads. Pinning pin description 1 emitter 2 base 3 collector, connected to the case fig. The characteristics and approximate specifications of 2n series discrete transistors are generally the same between different manufacturers when trying to decide which transistor you need, take into consideration the following. This unijuction transistor is packaged in to92 package, which has a power rating of 300mw. Tube 2n2646 or rohre 2n2646 id34366, transistor, wires and universal shown. A typical value for a small signal transistor is 60 to 80 v. The leads were anchored in a small glass block, allowing the transistor to be constructed above it, and then the whole upper part was sealed in a white epoxy block. Unijunction ujt transistor, 2 a, 1 a, 6 ma, to18, 3 pin, 125 c.
The 2n2646 is intended for general purpose industrial applications where circuit economy is of primary importance, and is ideal for use in firing circuits for silicon controlled rectifiers and other applications where a guaranteed minimum pulse amplitude is required. The rating for maximum collectoremitter voltage v ce can be thought of as the maximum voltage it can withstand while in cutoff mode no base current. The 2n is designed for use in pulse and timing circuits, sensing circuits and thyristor trigger. Apr 15, 2018 im researching biofeedback devices that measure galvanic responses in human flesh using a 9 volt battery. H669a npn silicon transistor components datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic, semiconductors and other electronic components such as resistors, capacitors, transistors and diodes. General electric solid state datasheet pdf catalog first page. Boca silicon pn unijuction transistor,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Texas instruments transistor and diode databook 1st ed 1973 datasheets for diodes from 1n251 on and transistors from 2n117 on acrobat 7 pdf 34. General electric solid state catalog first page, datasheet, datasheet search, data sheet, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits. Also, for all transistors incorrect pin out placement is a very common problem. The 2n32 is an rca pointcontact transistor in a singleended package that has all leads emerging from the same end. Datasheet search engine for electronic components and semiconductors.
They are intended for use in power linear and switching applications. Semiconductor transistor, diode, ic cross reference. If a mica insulation is used, the thermal resistance of the mica washer must be added, which amounts to about 0. Silicon planar unijunction transistors have a structure resulting in lower saturation voltage, peakpoint current and valley current as zell as a much higher base. The heater is a pnp power transistor in a large to218 tab package. Guide to 2n series transistors approximate specs and characteristics. Silicon pnp epitaxial planar transistor complement to type 2sc4468 application. Switching circuit, inverter, interface circuit, driver circuit built in bias resistor r110k, r247k complement to ksr1206 absolute maximum ratings ta25c unless otherwise noted symbol vcbo vceo vebo pc tj tstg parameter collectorbase voltage collectoremitter voltage emitterbase voltage collector current. Since the distribution of heat in the transistor crystal is not uniform and depends on voltage and. Toshiba power transistor semiconductor data book 1983. For example, just because it was an ebc pin out on the vintage transistor, the sub may be different.
In addition, these devices are much faster switches. Magnatec 2n2646 ujt transistor, 3pin to18 rs components. This device can also be used in power switching circuits such as relay or solenoid drivers, dc. The 2n2647 is intended for applications where a low emitter. General electric solid state catalog first page, datasheet, datasheet search, data sheet, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, semiconductors. Jan 19, 2014 2n2646 2n2647 transistor data sheet 1,734 views. Buy your 2n2646 from an authorized multicomp pro distributor. If a 100nf capacitor is used to generate the timing pulses. The circuit is very simple but id like to know exactly how this thing works. Silicon planar unijunction ujt 2n datasheet have a.
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