Csm5b2 datasheet transistor bd139

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I got this low power transistor that I want to make a class-A amplifier out of, but I'm having a really hard time with it. It seems not to behave much like what I expect from a transistor. The transistor came in a TO-126 package. I've never seen one like it, so I had no idea which side was the emitter.
 

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Plastic Medium Power Silicon NPN Transistor, BD139 datasheet, BD139 circuit, BD139 data sheet : MOTOROLA, alldatasheet, datasheet, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes, triacs, and other semiconductors. The amplifier operates in Class AB mode; the single 470R preset resistor, PR1 controls the quiescent current flowing through the BD139/140 complimentary output transistors. Adjustment here, is a trade-off between low distortion and low quiescent current. Power To-126 Npn Transistor (10)--sxq3 Part New Ic Bd139 , Find Complete Details about Power To-126 Npn Transistor (10)--sxq3 Part New Ic Bd139,Bd139,New Bd139,Ic Bd139 from Integrated Circuits Supplier or Manufacturer-Shenzhen Shengyu Electronic Co., Ltd. BD137/BD139 NPN SILICON TRANSISTOR SGS-THOMSONPREFERRED SALESTYPES DESCRIPTION The BD135, BD137 and BD139 are silicon epitaxial planar NPN transistors in Jedec SOT-32 plastic package, designed for audio amplifiers and drivers utilizing complementary or quasi compementary circuits. The complementary PNP types are the BD136 BD138 and BD140. Download and View (PDF) files: Best Viewed at 1024 x 768 Screen Resolution. Last update 22/07/2005 [ Home] [ My Guestbook] BD135, BD137, BD139 Plastic Medium Power Silicon NPN Transistor This series of plastic, medium−power silicon NPN transistors are designed for use as audio amplifiers and drivers utilizing complementary or quasi complementary circuits. Features •Pb−Free Package is Available* •DC Current Gain − hFE = 40 (Min) @ IC = 0.15 Adc
 

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THERMAL CHARACTERISTICS Characteristic Thermal Resistance, Junction−to−Case Thermal Resistance, Junction−to−Ambient Symbol qJC qJA Max 10 100 Unit °C/W °C/W BD137G BD139 BD139G †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications ... Jun 17, 2018 · BD139 Transistor Explained / Description: BD139 is a popular NPN transistor used in wide variety of electronic circuits, due to its high collector current and low cost it is an ideal transistor to be used in educational electronic projects and also in commercial electronics.

transistors fn1016 datasheet, ... AN10405 philips power transistor bd139 bd139 smd ksh200 equivalent power transistors cross reference TRANSISTOR REPLACEMENT table ...

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Mar 11, 2016 · 2SD633 is a NPN Darlington transistor and has replacement BD649, BD901, BDW73C, BDX53C BD649. 2SD600 has replacement BD139, BD230, BD379, 2SD1684 BD139. 2SB631 has replacement BD140, BD231, BD380, 2SA1184 BD140 2 Transistor current source . This is one of the simplest to construct current source, yet its operation is very reliable and suited for driving laser diodes. Depending on the current demand and voltage drop, a heatsink for the BD139 transistor will be required. Q1 will ensure a constant voltage of 0.6 to 0.7 volts over Rset.