High voltage circuits, switch mode power supplies, motor control, switching regulators, inverters, solenoid drivers. A couple of application circuits using the MJE have been discussed in the following articles:. Simple Transformerless Power Supply. If you have any circuit related query, you may interact through comments, I'll be most happy to help! Your email:.
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What kind of circuit do you want to use KSE or 2Amax? Does 2Amax using very often or just want to keep it for some special Load? If 2Amax using in a general purpose circuit, maybe you can use 2N, and plus Heatsink. Did you measure the total current consumption of the emergency light circuit? Consider your original size and heat problem, if you can use Mje is better than the other 4A Power components. Listen to ScottWang You can fix it now and fix it again later when it does the same thing Or you can fix it using his suggestion and never have to fix it again Your choice Dave Phoenix, AZ.
At i find the transistor PHE, but i am afraid to on the circuit. I am also posting the picture of old transistor and NEW transistor. So far NO one reply. Btw: I didn't see your device and the circuit, so I'm not sure if you use like 2N is better or not, it depends on how is the power of KSE You said it is used in emergency lighting system, so I guess the circuit is battery powered and some detection circuits to see that the AC mains is NOT there in order to start your circuit to light the fluorescence lamps.
And normally the battery is put on charge when the mains is okay.. Is that how your circuit works? Another way is: If the circuit is fed directly with V x 1.
If you show us a picture of your circuit board, may be we can recommend a better solution for you.. Did you check the components around the HF transformer, capacitors, diodes etc and see if any one of them is bad?
How about the other ? Normally in a push-pull circuit, both transistors are gone at the same time HTH Allen. Last edited: Dec 28, I also posted the picture of transistor of E, again i am posting.
I check all the components in the circuit the rectifier diodes are toasted and capacitor and the transistor. I have replace the other component and stack with transistor.
Because i could not found in the market. The circuit us fed directly i have check it by giving the main AC to the emergence light but their is not voltage on the battery. I am also posting the image of PCB of emergence light, If that will help. I will take more picture if you guys say. If the old one E didn't add the heatsink, then you can add a small heatsink for the new one PHE, it will give you a little help for the temperature of PHE Check all the components that are circled especially the zener diodes.
Make sure that they are not shorted or opened. If the zener voltage is printed on the body, try to verify them. Adding heatsinks is a good idea too.
Are you able to get J? Last edited: Dec 30, You must log in or register to reply here. Any alternative for transistor K? You May Also Like. Continue to site. General Electronics Chat. Feb 18, An alternative Transistor for this? Dec 25, Sep 21, S transistor datasheet and alternative. Jun 10,
MJE13005 Bipolar Transistor
13005D View Datasheet(PDF) - Jilin Sino-Microelectronics
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13005D STMicroelectronics Authorized Resource & Competitive Price
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13005D transistor. Datasheet pdf. Equivalent