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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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Without more info it’s hard to say what was original. I can find these, but I do not know if they’re a good replacement. They spec’d 2SB and comp 2SD as suitable as well. If anybody is interested, here’s a schematic of the amp GIF, kB. Can be found at most electronic distributors. But I have no way of making sure they are matched.

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

The 2sb has a higher voltage rating, and the is rated at higher current. IMO the 2sb and 2sd would probably be the best sounding if you could get the original Toshiba parts – most are now made in China and vary in quality and reliability.

Discussion in ‘ Solid State ‘ started by RuxmanJul 29, HyperionAug 4, Any help would be really appreciated! What about getting proper output transistors? Those are about as close as you can get. TIP33 and 34 are still available – should use the “C” version v. Tip 35C and 36C are higher powered versions and are still available. There are no adjustment points for DC 2sb68 in this amp.


Oregon, land of magnificent stumps. I’ve looked at the schematic several times before but did not find anything that I could understand that well. RuxmanAug 4, I see that 10R series base resistors are used in the output stages, so faster output transistors are unlikely to cause difficulty.

So I take it that these two datasheeg are the only thing that is relevant for the dc offset?

2SB Datasheet(PDF) – Inchange Semiconductor Company Limited

The two outputs, and then very near those, 2SA and 2SC I guess I’m going to 2xb688 to go with those, but I’ve gotten the impression that they are not entirely suitable.

Dynaco used TIP transistors in several of their designs. I have an amp with a blown channel. You must log in or sign up to reply here. You had a schematic the whole time?! Thanks for the advice so far.

It arrived today, and now the 2s6b88 works again. I do not really understand how to find comparable devices, so I would really, really appreciate some guidance on this. Just get a big bag and test them? And finally, 2SC or 2SC As mentioned, the originals are TIP34B datasheetbut on the blown channel, someone has replaced the transistor with a 2SB datasheet.


【2SD718/2SB688 TOSHIBA】Electronic Components In Stock Suppliers in 2018【Price】【Datasheet PDF】USA

Now, with your insight, I looked again and found something of great interest! If it’s clean, then overall amp performance is likely to be improved. BinaryMikeAug 1, Basically it sounds like you have a smorgasbord of output transistors. However, the DC offset is very high. Back to original question. A recap, for example, won’t help at all? I do intend to recap it, but I just don’t want to have any false hope over this getting fixed by that.

No matter where I put the probes, I get continuity. I have taken out the TIP on the blown channel and everything is shorted. Log in or Sign up. A total power supply voltage of 88V is really asking too much from anything in the family, even if the devices were pre-tested above that voltage with a curve tracer.

If I try anyway, do you still think that maybe the DC offset dwtasheet be improved? How do you get matched pairs of transistors normally? Do you already have an account? Dr TinearJul 29,