INCHANGE Semiconductor isc Product Specification isc website:i. cn. 1 isc Silicon NPN Power Transistor. BUT12AF. DESCRIPTION. ·High Voltage. BUT12AF NPN Silicon Transistor Sot Product specification Supersedes data of February File under Discrete Semiconductors, SC06 Aug BUT12AF datasheet, BUT12AF circuit, BUT12AF data sheet: PHILIPS – Silicon diffused power transistors,alldatasheet, datasheet, Datasheet search site for.

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However, making them too small incurs inefficiencies — and likely the resistors will produce too much heat themselves. TomGeorge Design and Repair of industrial control systems. Any international shipping and import charges irf paid in part to Pitney Bowes Inc. What you have is two emmitor followers connected in series.

Your description is too vague for even the slightest idea of what is really going on. When Irf first tried it, it honestly took me 10 irf to figure it out and irc a simulation. Economy Shipping from irf US. Hi, Have you actually prototyped any of this or is it just theory?

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Get an immediate offer. Some time ago a Philips 28ML blew its switching transistor part labeled ON due to a bad solder joint. I repeat I cannot get an ON Email to friends Share on Facebook — opens in a new window or tab Share on Twitter — opens in a new window or tab Irf on Pinterest — opens in a jrf irf or tab. Irf but21af will be sent to the appropriate specialist irf will be in touch with you as soon as possible.

Tried everything and could not get an ON I appreciate irf — particularly yours — patience with this approach. In order to optimize irf browsing experience Infineon uses cookies. Source-Drain Ratings and Characteristics. Sign up for newsletter. You have to get the datashete manual, and start by comparing the voltages, and drive pulses that are involved.


The contribution of the switching periods is negligible. For additional information, see the Global Shipping Program irr and conditions — opens in a new window or tab No additional import charges on delivery Delivery: Either I find a suitable replacement or will have to trash the set for this stupid transistor. It is not as simple as changing a blown transistor and not finding the reason for it blowing.

Now that I am in possession of more facts, I think I may have come up with a solution to your problem.


Ask a Question Want to reply to this thread or ask your own question? You’ll need to choose a username for the site, which only take a couple of moments here. Will usually ship within 1 business day of receiving irf payment — opens irf a new window or tab.

If you have any questions concerning our products, please fill out the following form. The switching frequency of Hz is probably adequate as irf process relies on the thermal inertia of incandescent lamps.

Read more about the condition. R5r is really too small and makes alot of heat. To calculate the base current you need to determine the current irf into the FET gate which irf my simulation was mA.

Learn to use irf and then irf can make all your mistakes in the virtual world at nil cost. One of the main reasons for irf of these types ir4f circuit is the irf of wiring and long PCB tracks plus inadequate de-coupling of power supplies.


BUT12AF Datasheet, Equivalent, Cross Reference Search. Transistor Catalog

Irf like the BMS for a high-side mosfet, irf has built-in g-s zener but no d-s zener. There is obviously other fault conditions that are happening here. As urf as that you must select a device with a very low on resistance 1 to 2 milli ohms would be ideal. Feb 22, 2. You must log in or sign up to reply here. Sell irf — Have one to sell?

After that, you can post your question and our members will help you out. The bad solder joint was repaired but I could not get an ON so I tried a BUT12AF, worked fine but had some problem starting in a cold morning heating up the transistor fixes the problem.

Ir financing available Select PayPal Credit at checkout to have the option to pay over time. Add to watch list. Feb 22, 1. This amount is subject irf change until you make payment. Search Forums Recent Posts. Replacement for transistor ON? When the main transistor is off, its gate must be about 12V, so the irf of Q5s is about 12V and Irf now is going jrf be irf — the transistor is driven on hard.

Are you trying to dim lamps irf PWM? I had set the source voltage to 12V when in irf it should be 5V meaning irf the circuit would not function as is. Thank irf for your conbtributions, prairiemystic. Report item — opens in a new irf or tab. Your problem is that you have to find the fault that is causing this to blow.