Like S, its PNP alternative S is also a widely used transistor, it is a reliable low cost transistor with very good technical characteristics. It is designed for audio amplification and other general requirements in electronic circuits but apart from that it is also used widely in commercial appliances. The S possess some very good features in its small TO package therefore it can be used in many electronics applications for example the output dissipation is 1 watt which is very good feature to use it for amplification of audio signal to around 1 watt and also in many other audio amplification stages. The max collector current is mA hence it can also be used for variety of switching application in electronic circuits. The max gain of the transistor is which is also a plus point of this transistor.

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It only takes a minute to sign up. It has ceased to deliver charge current to the battery but the half wave rectified current is present at what I think is the emitter of a TO92 cased device labelled "S". I have found confusing information trying to identify this device. Does anyone have experience with this "transistor"? If the info I found is correct then I guess I can search using the max ratings to find a sub. It is the only transistor on the small circuit board which also contains a quad op-amp.

Is it likely that a TO92 cased device would control current to charge a 7 amp hour battery or might this be a voltage reference? Example datasheet of a similar part here. Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Asked 5 years, 9 months ago. Active 3 years, 8 months ago.

Viewed 2k times. Fizz J Wales J Wales 21 3 3 bronze badges. I made the assumption that it was the latter in my answer. Active Oldest Votes. Other similar part numbers are SS, SC etc. It is often quoted with a silly high power dissipation intended for audio output type ratings. Spehro Pefhany Spehro Pefhany k 9 9 gold badges silver badges bronze badges.

It would be interesting to get a definitive answer on the origins of this popular part. I'm going to ask this as a separate question. Also would explain the adoption in Asia and pseudo-Japanese numbering. Good luck with your question. Edward Edward 2, 13 13 silver badges 22 22 bronze badges.

I attempted to survey the alternatives in my answer. Alas we were not given a photo to work with here Apparently such answers aren't a positive contribution to this site, so you'd better do your thorough parts research elsewhere. Sign up or log in Sign up using Google.

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