SS9014 Bipolar NPN Transistor

SS9014 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 in the SS9014 Transistor datasheet given at the end of this page.

 

Complementary PNP for SS9014

SS9015

 

SS9014 Equivalent Transistors

KSP06, KSP42, MPSA42, MPSW06

 

Alternative NPN Transistors

BC549, BC636, BC639, BC547, 2N2369, 2N3055, 2N3904, 2N3906, 2SC5200, 2N5551

 

Where to Use SS9014 Transistors?

The SS9014 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 SS9014 Transistors?

The SS9014 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 SS9014 seems to satisfy us with all those parameters. A typical pre-amplifier circuit using SS9014 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)

 

Applications

• AF Pre-amplifiers
• Used as Class B amplifiers
• Low noise stage audio equipments
• Push-Pull Circuits 

 

2D Model and Dimensions

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.