what’s the minimum hfe for a 2n3904 for a collector current if 1ma and a collector emitter voltage of 1v

  • 2n3904 revision no : 1 c 0 collector current i (ma) collector current i (ma) 0 c 0 base-emitter voltage v (v)be i – vc be 10 dc current gain h fe 0.1 0.3 1 3 collector current i (ma)c 0 collector-emitter voltage v (v)ce i – vc ce h – i collector current i (ma)c collector-emitter saturation ce(sat) v – i

  • 2N3904 Datasheet, Equivalent, Cross Reference Search

    2N3904 0.2A, 60V NPN General Purpose Transistor Elektronische Bauelemente RoHS Compliant Product A suffix of -C specifies halogen and lead free FEATURES TO-92 Power Dissipation PCM: 625mW (Ta=25C) G H1Emitter 111 Collector Current ICM: 200mA 2Base 222 Collector Base Voltage V(BR)CBO: 60V 3Collector 333JA DCLASSIFICATION OF hFE(1) Mi. 0.15.

  • Apr 07, 2021 · Collector- Emitter Voltage VCEO Max. 40 V. Collector- Base Voltage VCBO. 60 V. Emitter- Base Voltage VEBO. 6 V. Collector-Emitter Saturation Voltage. 0.3 V. Maximum DC Collector Current. 0.2 A. Pd – Power Dissipation. 625 Mw. Gain Bandwidth Product fT. 270 MHz. Minimum Operating Temperature – 65 C. Maximum Operating Temperature + 150 C. Height

  • Jun 15, 2017 · Since the 2N3904 is an NPN transistor, that means the base needs positive biasing (appropriate voltage levels and resistance) to turn on the collector emitter junction for proper current flow. Use of a load resistor (R1 above) is also important so there is not too much current being driven through the LED and transistor.

  • •Transistor will tolerate supply voltage on Collector !Δv > 40-60 volts •Expect current leakage through collector i leakage < 50 nA Electrical Characteristics When the transistor is on Min Current Gain: 30 < β <100 Max Collector-Emitter Saturation Voltage: 0.3 volt Note: Power dissipated, P=VI < 0.3volt*0.2A = 0.06 W Gain: i collector = β*i

  • Nov 21, 2011 · Per @mgburr and Lancelot: A 2N3904 transistor’s beta max value is 150 and min value is 100. When figuring out DC current gain, the beta value is part of the formula. In the sheet above, it is also known as as hFE. (hFE = beta = gain for easier understanding)

  • what’s the minimum hfe for a 2n3904 for a collector current if 1ma and a collector emitter voltage of 1v
  • I higher is hfe in 2N3904? – Page 1 – EEVblog

    A 2N3904 has an hFE of between about 25 and 400, depending on the operating conditions. It says so plainly in the data sheet characteristics charts. (The gain of any transistor will vary widely depending on the exact circuit conditions).

  • Jul 26, 2020 · Emitter amplifier; Collector amplifier; The Common emitter type is the popular configuration while using an amplifier the formula of using is given below. DC Current Gain = Collector Current (IC) / Base Current (IB) Applications of 2N3904: It is used in small load switch having low saturation voltage and high gain. It can also be used on

  • Mar 18, 2013 · If you use the minimum hfe of 100,as Juguar suggest in you design the circuit will always work for any 2N3904. The 2n3904 is normally a switching transistor, but it works very well as a linear amplifier.

  • The hFE of the 2N3904 varies between 30 to 300 (depending on the test conditions), and the current gain bandwidth has a minimum of 300 MHz. The 2N3904 has a maximum DC collector current of 200 mA and the maximum power dissipation of the 2N39045 is 625 mW.

  • Nov 12, 2013 · And this -> The current gain depends on the collector current. To my knowledge the current gain is also known as the DC collector current or the hfe. The 2N3904 has an hfe of 100. Also, I thought that current and voltage are not interchangable. If I am pushing volage to the base why are we talking about current at the base.

  • What is hFE of a Transistor? – Learning about Electronics

    So if 1mA is fed into the base of a transistor and it has a hFE of 100, the collector current will be 100mA. Every transistor has its own unique hFE. The hFE is normally seen to be a constant value, normally around 10 to 500, but it may change slightly with temperature and with changes in collector-to-emitter voltage.

  • Jan 10, 2004 · reasonably predictable collector current, so 1mA through 4k7, giving a nominal (average) output voltage of 7.3V is probably okay. At 1mA, the incremental emitter resistance of transistor is about 30R. To get a gain of -10, you need an extra 440R between the emitter adn 0V. 430R is probably close enough. 1mA through 430R is 0.43V.

  • This resistor determines the amount of saturation current I b(sat) flowing into the base junction, and that controls the amount of saturation current I c(sat) flowing through the collector and emitter junctions. For hard saturation, engineers usually use a DC current gain h FE value of 10.

  • The output characteristic curve is especially useful as it shows the variations in collector current, Ic for a given base current, Ib over a range of collector-emitter voltage, V ce. A sample plot for a 2N3904 is shown below. The centre, cyan curve shows that for a base current of 42uA the collector current is about 8.5mA.

  • The behavior of an NPN bipolar transistor is largely controlled by the current flowing into the base (i.e., a positive current). For the usual collector-emitter voltage drops (i.e., the active region: positive voltages from a fraction of a volt up to some breakdown voltage) the collector current (I C) is nearly independent of the collector-emitter voltage (V CE), and instead depends on the

  • Do BJT (Darlington) transistors have a minimum collector current?

    A Darlington transistor pair operating at full gain has a minimum V CE that is a combination of the V CE(SAT) of the first transistor and the V BE of the second transistor. In order to conduct current at all, the overall V CE must be greater than the sum of these two. Any less, and the second transistor does not receive the base current that it

  • As the sinusoidal collector current increases, the collector voltage decreases. The col-lector current varies above and below its Q-point value, I CQ, in phase with the base current. The sinusoidal collector-to-emitter voltage varies above and below its Q-point value, V CEQ, 1808 out of phase with the base voltage, as illustrated in Figure 6–2.

  • Jan 09, 2020 · The voltage of 9V appears at the collector because the ‘open’ prevents collector current. Q12. For the emitter bias circuit shown in Fig. 10, find I E , I C , VC and V C and V CE for β= 85 and V BE = 0.7V.

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