Contents
What is equivalent of 2N3904?
The 2N3904 (NPN) and 2N3906 (PNP) are complementary transistor pairs. These transistors are available in package styles TO-92, SOT23, SOT223 with different prefixes.
What is an SMD transistor?
Surface Mount Transistor or SMT Transistor is an SMD electronic component made up of semiconductor material like silicon or germanium. There are 2 types of Surface Mount Transistors: NPN Type. PNP Type.
How do you find the transistor of a SMD?
Make sure the measurement is precise, or measure across multiple pins and divide by the number of pins to get the pin pitch. Step 2) Identify all markings on the top of the component. These markings include: Manufacturer Logo and\or SMT code. If you are unsure of character differences, make sure these are noted.
What is the beta of 2N3904 transistor?
For your transistor, the ubiquitous 2N3904, Fairchild’s datasheet quotes a minimum beta of 100 and a typical of 300 at 10mA collector current and 1V from collector to emitter.
Which is the SMD equivalent of 2N3904?
JEDEC is relatively user-friendly, SMD equivalent of 2N3904 is simply MMBT3904, 2N3906 is MMBT3906, and so on. Pro Electron is less user friendly, SMD equivalent of BC547 is not simply MMBT547.
Which is better 2N3904 or 2n4401?
2N3904/3906 2N4401/4403 2N5401/5551 SMD Equivalent is MMBT3904/3906 MMBT4401/4403 MMBT5401/5551 The transistor part number nomenclature are: JIS, Pro Electron, and JEDEC. Pro Electron is a European standard. JEDEC is a North American standard developed in the United States that is also worldwide.
What should the current gain be for a 2N3904 transistor?
At 10mA Collector current the 2N3904’s current gain could be anywhere between 100 and 300. Any substitute that is within or close to that range should be fine (assuming the circuit was designed to accommodate such a wide variation). In your circuit higher gain is better, but 100 is plenty enough.
Are there equivalent transistors with the opposite pinout?
Some equivalent transistors have the opposite pinout (E,B,C) and some are B,C,E. This won’t be a problem so long as you are aware of the difference, and refer to the datasheet of the part you are using when wiring up the circuit.
https://www.youtube.com/watch?v=Lj9H9B1x38o