A4T Datasheet, A4T PDF, A4T Data sheet, A4T manual, A4T pdf, A4T, datenblatt, Electronics A4T, alldatasheet, free, datasheet, Datasheets, data sheet, datas. Googling “SOT transistor A4t” yields which suggests it might be a BAV70 dual diode, and. products offers a4 transistor products. About 63% of these are integrated circuits, 10% are transistors. A wide variety of a4 transistor options.
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The burnt one did not give me overload when I touched either probes to base however it gave me a much lower reading for probably B-C, I couldn’t confirm C-E pins than it read for B-E.
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I reached this but was not sure if it is the same. Relevancy Transaction Level Response Rate. But how should i connect the 1n which I trxnsistor And the two anods will be the other pins.
Competitive price advantage helps to save your purchase cost and your precious time. I would appreciate if you transsistor give me a schematic for the replacement you suggested?.
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SOT-23 power board patch transistor A4W A4p A4t A4S kjj original spot shoot
But what about the 95 marking? China Manufacture A4 Transistor. Not knowing the rest of the circuit, a safe replacement would likely be a series of two 1N or BAV70 indeed paralleled by a beefier device like an 1N – this would be as good at suppressing the back EMF quickly while unloading most of the current spike into the 1N It looks like the flyback diode thats used to suppress inductive kickback when the coil is switched.
What is the type of this surface mount transistor? The relay use 24 vdc and if the voltage across the coil keeps fluctuating around 24 then maybe this what you mean by actuating the coil more frequently and could have burnt the diode.
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free shipping*(50)BAV70 A4 A4T SMD Transistor SOT 23 on | Alibaba Group
Sign up or log in Sign up using Google. I transistr a no frost freezer which stopped freezing efficiently and after some research and trials I found the problem to be related to control board. The diodes are probably just used as freewheeling diodes for the relay coils verify the circuit before modifying anything!
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About product and suppliers: Since i found alot of BAS16 in an old pc motherboard i tdansistor. Now i have to test the relay which i think will work ok. Email Required, but never shown. I was thinking it may be diode logic to power a relay under two different conditions, but it could indeed be just flyback diodes.
Fortunately the compressor is working ok when i connected it directly to mains. But constantly replacing diodes while investigating another problem can get tiring. And as of now I am pretty sure the problem is with this obviously burnt transistor that controls the compressor’s relay.
I suggesting putting the two smaller, faster diodes in series so they have a higher turn on voltage than the slower 1N or 1N parallel to them – so they will only take the back EMF until the 1N40xx turns on! Well the problem obviously is from our power source here in Iraq we use generators along with power grid and the generators most of the time are unstable and under voltage. Thanks in advance and sorry for my english.
You can also choose from free samples, paid samples. Googling “SOT transistor A4t” yields http: As such, I believe it’s probably adequate mA continuous, 4A for 1 us! Now if my logic is correct, I want to know how can I figure it’s precise model so I can change it? NO, that wasn’t my trwnsistor Most of our products are new and original, any interests please contact me. Sign up using Facebook. Marking which says “BAV70 – A4” and “t: Aim to be the best reliance semiconductor supplier of china.