Bipolar Junction Transistor (BJT) Tutorial

Parts/Characteristics of BJTs
Why are NPN Transistors Referred to as "Normally Off" Devices?
Why are PNP Transistors Referred to as "Normally On" Devices?
What is hFE of a BJT Transistor?
What is β (beta) of a BJT Transistor?
What is α (alpha) of a BJT Transistor?
What is VBB of a BJT Transistor?
What is VBE of a BJT Transistor?
What is VCC of a BJT Transistor?
What is VCE of a BJT Transistor?
What is Vπ of a BJT Transistor?
What is gmVπ of a BJT Transistor?

Regions of a BJT Transistor
Base Region of a BJT Transistor
Collector Region of a BJT Transistor
Emitter Region of a BJT Transistor
What is the Largest Region of a BJT Transistor?

BJT Characteristics Curve
Breakdown Region of a BJT Transistor
Cutoff Region of a BJT Transistor
Active Region of a BJT Transistor

BJT Calculations
How to Calculate β of a BJT Transistor
How to Calculate α of a BJT Transistor
How to Calculate VBB of a BJT Transistor
How to Calculate VCE of a BJT Transistor
How to Calculate Vπ of a BJT Transistor
How to Calculate Rπ of a BJT Transistor
How to Calculate GmVπ of a BJT Transistor Circuit
How to Calculate GM of a BJT Transistor
How to Calculate the Base Current IB of a BJT Transistor
How to Calculate the Collector Current IC of a BJT Transistor
How to Calculate the Emitter Current IE of a BJT Transistor

BJT DC Analysis
DC Analysis of a Bipolar Junction Transistor Circuit
Example of DC Analysis of a Bipolar Junction Transistor Circuit
How to Find the Q-point of a BJT Circuit

BJT AC Analysis
AC Analysis of a BJT Transistor Circuit: Mid Frequency Response
Example- AC Analysis of a BJT Transistor Circuit: Mid Frequency Response
What is the Midband Gain of a Transistor?
How to Calculate the Midband Gain of a BJT Transistor Circuit

BJT Transistor Biasing
Transistor Biasing Methods
Base Bias of a BJT Transistor
Voltage Divider Bias of a BJT Transistor
Emitter Bias of a BJT Transistor

BJT Concepts
What is Open Collector Output?
How to Counter the Differences in β in BJT Transistors
The Importance of the Emitter Resistance, RE, in a BJT Transistor Circuit
Difference Between a NPN and a PNP Transistor
Does Current Flow Through a Transistor From Collector to Emitter or Emitter to Collector?
How an NPN Transistor Works
How a PNP Transistor Works
How to Connect a PNP Transistor in a Circuit
2N3904 vs. 2N2222

BJT Datasheet Specifications
Transistor Maximum Junction Voltages, VCEO, VCBO, VEBO
Power Dissipation Rating, Pd of a BJT Transistor

Troubleshooting a BJT Transistor
Troubleshooting- Transistor Turns On Without Any Base Current or Gate Voltage

BJT Circuits
How to Build an Emitter Follower Circuit