Bipolar Junction Transistor – Wikipedia, The Free Encyclopedia
In general, transistor level circuit design is performed using SPICE or a comparable analog circuit simulator, so model complexity is usually not of much concern to the designer. … Read Article

Transistor – Wikipedia, The Free Encyclopedia
Emitter current and hence the collector–emitter current (I ce) increase exponentially according to the Shockley diode model and the Ebers-Moll model. BD139: BF: Silicon, RF (high frequency) BJT or FET: BF245: BS: Silicon, switching transistor (BJT or MOSFET) … Read Article

Talk:Current Source – Wikipedia, The Free Encyclopedia
Just look at the large signal model for the BJT used by SPICE and you will see that what have just stated is incorrect. difference of about 0.35db (1db practically), and the voltage gain is stable across following transistors: BC547, BC337, 2N2222 and BD139. … Read Article

PN2369A / MMBT2369A NPN Switching Transistor
Output Capacitance V CB = 5.0 V, I E = 0, f = 1.0 MHz 4.0 pF C ibo Input Capacitance V EB = 0.5 V, I C = 0, f = 1.0 MHz 5.0 pF h fe Small-Signal Current Gain I C = 10 mA, V CE = 10 V, R G = 2.0 kΩ, f = 100 MHz 5.0 SWITCHING CHARACTERISTICS * Pulse Test: Pulse Width ≤ 300 µs, Duty Cycle ≤ 2.0% Spice Model NPN (Is=44.14f Xti=3 … Read Document

Tomasz Fitzermann
Model Editor – program generujÄ…cy definicje modeli dla Pspice używanych podczas symulacji. Powyższe parametry uzyskuje siÄ™ przy tranzystorach T6 typu BD139, T8 i T10 typu BD138, BD139 i koÅ„cowych T9, T11 typu 2N3055. … Get Content Here

Prof. Dr. T. Wolf Schaltungssimulation Fachhochschule …
Oft findet man im Internet durch Eingabe der Suchbegriffe „<Bauteilname> Spice Model“ ein Hersteller-Modell in Textform. verwendeten npn-Transistors BD139 und speichern Sie das Libraryfile im Ordner SM_UEB3_A … Content Retrieval

Component Library Documentation
BD139 BD140 BD437 BD438 BD539 BD540 BD711 BD712 BD743 BD911 BD912 BDX53 BDX54 BF173 BF180 BF259 BF337 BF494 BFY50 BFY51 BFY52 BFY90 BSX20 BU208 BU407 BU426 BU806 BUP35 BUP41 BUP49 are not packaged for PCB since we have been unable to locate a reliable source of mechanical data, but most of the specific types are linked to SPICE … Get Content Here

CHF_Navigator – Costruire Hi-Fi
North Star Design Model 3 il DAC della nuova generazione Un classico Push-Pull a valvole, configurato a triodo e sviluppato con il simulatore SPICE Single ended a stato solido con la polarizzazione dinamica, utlizza il transistor MJ15003, BD139 … Fetch Content

Component Library Documentation
BD139 BD140 BD437 BD438 BD539 BD540 BD711 BD712 BD743 BD911 BD912 BDX53 BDX54 BF173 BF180 BF259 BF337 BF494 BFY50 BFY51 BFY52 BFY90 BSX20 BU208 BU407 BU426 BU806 BUP35 BUP41 BUP49 are not packaged for PCB since we have been unable to locate a reliable source of mechanical data, but most of the specific types are linked to SPICE … Read Full Source