2SA Datasheet PDF Download – Silicon PNP Transistor Epitaxial Planar Type(PCT PROCESS), 2SA data sheet. 2SA datasheet, 2SA circuit, 2SA data sheet: KEC – Silicon PNP Transistor Epitaxial Planar Type(PCT PROCESS),alldatasheet, datasheet. datasheet search, datasheets, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes and other semiconductors.

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Anyone know where I can pick up one of these bad boys? It’s still difficult for me to understand, but I will learn. The LED D1 is used as an example of a load. The minimum R7 current is now 1. Each transistor being on keeps the other on.

2SA Datasheet PDF –

Olin Lathrop I’m trying to make an accurate calculation, but I have little understanding of how to produce it.

Please post the readings and I’ll try to help you find a replacement. OK I found it. The lowest voltage drop for such a LED would be 1. Post as a guest Name.

2sa2173 turns off Q2, which then no longer provides base current to keep Q2 on. Sign up using Facebook. I thank you for having responded to my question. Here is the datasheet URL for this transistor.


【2SA1273 KEC】Electronic Components In Stock Suppliers in 2018【Price】【Datasheet PDF】USA

That pulls the top end of R4 which, which turns on Q1. Figure another mV for Q4 when saturated, leaving 2. Try to find one and pull it out of the circuit and check the pin lay out and measure it’s B to C and B to E.

For that you’d have to follow what is shown here and properly fill in all the assumptions like the beta of the transistors. Hey all, I’ve been trying to figure out why one of my Rovio’s motors only spins one way. Content is read only for historical purposes.

But then you’re near the edge of what this PNP can do. I’d round down to the next common value of 2. That results in That means a total of datashret least 1. I added both circuits. The main job of Q1 is to turn on Q4, so it can power the load.

From inspection, we can see that the current to drive Q2 can be much smaller than that. This can work for different 2sq1273 of the resistors R2, R3, R7, R8.


2SA1273 Datasheet, Equivalent, Cross Reference Search

R8 is only to turn off Q4 when it is not being actively driven on. Sign up using Email and Password. Since R3 only needs to react “instantly” on a human time scale, there is no need to make R3 small. Sign up or log in Sign up using Google. This is a good answer and shows the process you need to follow to make proper component value choices. Home Questions Tags Users Unanswered. Changing R2, R3 will make the latch work or not.

Suppose I datashheet to feed this circuit from a battery then I want the currents to be as low as possible, for that I would completely re-calculate all resistor values to get the optimum values. The circuit basically consists of 3 sections: Let’s say now B-E is mV. That’s the main current that Q1 needs to be able to sink when on.