D4203D - Damaged - shorting the electrodes, I am looking for a replacement

I am looking for a substitute for the transistor with the designation D4203D. Catalog note: klik

The transistor comes from the power supply for the T5 14W fluorescent lamp. The desoldered has a short between all electrodes.

I found a transistor like MJE13003. It seems to me that it will be a good replacement. Could someone confirm?

Hello
This MJE transistor has smaller currents and has no built-in diode.
greetings

I do not know the structure of this ballast, but in others there are MJE13007 transistors, quite common and easy to buy. After adding external LEDs (probably FR107) maybe something can be done, if you put in a photo, it could help.

I gave it as it is in other fins, without knowing the construction of this particular it is not known whether the solution will work ...

In places marked Q1 and Q2 there were defective D4203D. I have soldered Q1 from a second, efficient system (three lamps are the same in the lamp, one for a fluorescent tube) to measure it and this has the right voltage drops.

It's black, big something, it's a hit, of course, flooded with "thermoglute" to reduce the buzzing .

Maybe I will add that the defective system had a bulging capacitor, this relatively large electrolyte. The other capacitors are fine. Its original value is 3.3uF / 400V. I exchanged for 4.7uF / 400V, because I only have one. So, by the way, I will ask if it can stay or is it better to buy 3.3uF?



I have such transistors: click , will be [/url] for a replacement?

This system reminds me of ballasts with energy-saving fluorescent lamps, check all diodes, resistors, deac (there is a manual on the net, or you can replace it immediately) and with efficient transistors should move. See if the PCB has these diodes on the CE, then you would not need to solder additional.
http://www.pavouk.org/hw/lamp/luxar11w.png
http://www.pavouk.org/hw/lamp/osram21w.png
I have seen MJE13003 in such lights, so there is a chance they will survive.


BU508 it's a pity to pack there ...

I sold BU508 and unfortunately it does not work, so probably a lot of elements fell there. There is no point in going on this, it's better to replace all the ballasts, because those are ordinary Chinese. Thank you for your help.

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It turned out, however, that the replacement of all resistors (practically all were damaged - burned from the bottom, that is why you can not see) and soldering the BU508DF returned the system to efficiency.