isc website: 1 isc Silicon PNP Power Transistor. 2SB DESCRIPTION. ·Collector-Emitter Breakdown Voltage V(BR)CEO= V(Min) . 2SB Transistor Datasheet pdf, 2SB Equivalent. Parameters and Characteristics. SILICON PNP TRIPLE DIFFUSED TYPE. 2SB Unit in mm. AUDIO FREQUENCY POWER AMPLIFIER APPLICATIONS. MAX. FEATURES.

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If I try anyway, do you still think that maybe the DC offset would be improved? I have taken out the TIP on the blown channel and everything is shorted. Also, a small 1uF cap had exploded on this channel. Some are probably very.

You must log in or sign up to reply here. However, the DC offset is very high. Man, it is difficult to find these output transistors. The 2sb has a higher voltage rating, and the is rated at higher current. Log in or Sign up. That’s enough increase in speed to provoke HF instability in some amp circuits, so the repair definitely should be checked for parasitic oscillation. Thanks for the advice so far.

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Can be found at most electronic distributors. I see that 10R series base resistors are used in the output stages, so faster output transistors are unlikely to cause difficulty. OverLoadJul 29, Discussion in ‘ Solid State ‘ started by RuxmanJul 29, I do intend to get the proper transistors soon, this was just a test.

Any help would be really appreciated! A recap, for example, won’t help at all? As mentioned, the originals are TIP34B datasheetbut on the blown channel, someone has replaced the transistor with a 2SB datasheet.

(Datasheet) 2SB pdf – POWER TRANSISTORS(8A/V/80W) (1-page)

Unless the amp is running at high voltages, they all should work. Now, with your insight, I looked again and found something of great interest! Share This Page Tweet. I can find these, but I do not know if they’re a good replacement.

Just get a big bag and test them? Yes, my password is: I do intend to recap it, but I just don’t want to have any false hope datasheeg this getting fixed by that. That confirms that the TIPs are not original!


Those are about as close as you can get.

2SB688 Datasheet PDF

IMO the 2sb and 2sd would probably be the best sounding if you could get the original Toshiba parts – satasheet are now made in China and vary in quality and reliability. How do you get matched pairs of transistors normally? I have an amp with a blown channel. I ordered a new TIP transistor before starting this thread. Please identify the amp model, so this thread will be useful to future readers.

Dtasheet then there are three more, I have not looked at them because they are hard to reach, but according to the schematic they are either: You had a schematic the whole time?! FootFungusAug 4, Dynaco used TIP transistors in several of their designs.