S9014 Bipolar NPN Transistor

Description

S9014 Transistor Pinout Configuration Pin No. Pin Name Description 1 Emitter Current Drains out through emitter, normally connected to ground 2 Base Controls the biasing of transistor, Used to turn ON or OFF the transistor 3 Collector Current flows in through collector, normally connected to load Features Pre-Amplifier, Low Level, Low Noise NPN Transistor Current Gain (hFE), 60 to 1000 (good linearity) Continuous Collector current (IC) is 100mA Collector-Emitter voltage (VCEO) is 45 V Collector-Base voltage (VCB0) is 50V Emitter Base Voltage (VBE0) is 5V Transition Frequency 150MHz Available in To-92 Package Note: Complete Technical Details can be found at the datasheet given at the end of this page. Complementary PNP for S9014 S9015 S9014 Equivalent Transistors KSP06, KSP42, MPSA42, MPSW06 Alternative NPN Transistors BC549, BC636, BC639, BC547, 2N2369, 2N3055, 2N3904, 2N3906, 2SC5200,2N551 Where to Use S9014 Transistors? The S9014 is a low signal and low noise NPN transistor with a good hfe value of upto 1000 of high linearity this makes this transistor an ideal choice for designing Audio Frequency (AF) amplifiers or pre-amplifiers. This NPN transistor also has its counter PNP transistor ( SS9015 ) which can be used to design class B amplifier in push-pull configuration. It also has good collector dissipation (power dissipation) of 0.4W to driver speakers of decent rating. The transistor has a very low collector current of 100mA and hence it is not advised for switching or driving circuits. I have personally found these transistors being used in wireless security cameras and small game consoles where audio pre-amplification is required. How to use S9014 Transistors? The S9014 is commonly used to build pre-amplifier, but you may design your circuit based on your requirement. To build a pre-amplifier using a transistor we need to select a transistor that is of low signal and low noise with good hfe value and collector dissipation. The S9014 seems to satisfy us with all those parameters. A typical pre-amplifier circuit using S9014 is shown below. The values of resistors R1, R2, R3 and R4 can be calculated by using the value of Vcc, Hfe and Ic. Some useful formulae for calculation is give below Ib = Ic / hfe R1 = 1/2Vcc / .005 R2 = 1 / (Ic Ib) You can find the design guidelines for building your own circuit in the given link. Applications AF Pre-amplifiers Used as Class B amplifiers Low noise stage audio equipments Push-Pull Circuits 2D Model of S9014 If you are designing a PCB or Perf board with this component then the following picture from the Datasheet will be useful to know its package type and dimensions. Component Datasheet S9014 Bipolar NPN Transistor Datasheet

From the supplier's page.