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Sign up using Email and Password. This is being used in a flyback circuit, which switches at approx ummm kHz or so.
Can you clarify position of additional 10R resistor? Well, it’s whether excessive base current, or excessive product of Ic x Vce.
The additional resistor dampens this oscillation. If not, you have to take out a good oscilloscope datashete look at the waveforms. But you can see that in some situations there are differences between BC and 2SC What type of voltage booster circuit is this? What could cause transistor to overheat? So, is there something ‘special’ about the C trannies?
Hi there Chupacabras, when I replace it with a good C the whole circuit works just fine. It is off the chart, it is a bad sign for this situation.
2SC2001-M Datasheet, Equivalent, Cross Reference Search
This is from datasheeet datasheet: Seeing that your circuit has no feedback resistor anywhere on the 2SC, I would suggest to try adding a 10R resistor in the base of the 2SC resp BC after the 22R resistor that goes to the feedback path and see whether that improves the situation.
I have a circuit in which the C aka 2SC transistor failed after many years. Suitable replacement for 2SC transistor? This is your circuit: When I replace it with a BC, the circuit doesn’t work at all.
2SC2001 Datasheet, Equivalent, Cross Reference Search
Thanks, any help appreciated! This would severely limit the lifetime of an already stressed component. Another relevant difference could be in hFE. So, transistor could overheat by high Vce or Ic.
Sign up using Facebook. Base current is not a problem, it is limited by R to 4. So power dissipation would be mW, which is above maximum allowed power dissipation. Vce would be much higher than 1. Hi, Attila, thanks so much for prompt reply.
2SC Datasheet, Equivalent, Cross Reference Search. Transistor Catalog
Home Questions Tags Users Unanswered. There are huge differences: It depends on your batch. BC doesn’t seem suitable Ask Question. Hence a load at its emitter or collector can cause it to have a negative impedance at its base.
I have short-term access to another C – putting that in the circuit works just fine, so I know the transistor is the issue.