WEITRON. C NPN Transistors. Lead(Pb)-Free. Pb . TO 1. 2. 3. 1. EMITTER. 2. COLLECTOR. 3. BASE. 1/4. Page 1 of 5. Tel: ()-TAITRON () () Fax: ()- TAITFAX () () SMD Transistor (NPN). SMD Transistor. C NPN Transistors. ELECTRICAL CHARACTERISTICS (TA=25 C unless otherwise noted) (Countinued) Characteristics Symbol Min Typ Max Unit.
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I was probing both the transistors to see what’s going on when a toy is “activated”. LVceo means – the minimal collector-emitter voltage to cause a break down is 50V, right?
The out leg that goes to the speaker doesn’t datashwet show any voltage, yet its leg that goes to the controller shows different voltage drops I assume that’s the controller “playing” music. There is absolutely no markings on this thing, and it has three legs and black solid body.
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Nearly all transistors that are labeled according to the Japanese standard JIS lack the leading “2S”. I’m sorry, this is confusing: I’m trying to fix this little electronic toy.
Thank you for all your help, support, and explanations: Pawel – Vebo – is the reverse base voltage, negative with respect to the emitter. See here page one for LVceo and some other relevant terms. It very much looks like this: Then the spec for 2SC says: Or I don’t understand what “LVceo: Now, I really don’t know much about this, but really wanna fix that toy: It’s really not much, 8 buttons, you push one, the lights go on, and a little melody plays.
There is a single controller, splitting to two circuits, one for dataseet lights, and another one to a speaker. When the button is pushed, the voltage on the controller leg drops a volt or so, and the “out” leg starts showing some for lights. Umm, you don’t think 2SC is a little high voltage for battery operated?
This is always low, around 5V.
2SC945 / C945 NPN Transistor
But, the only things I see on this transistor again, I don’t know what is it, reallyare: I was able to replace this transistor with 2N I should’ve been more careful picking the replacement that had the same order of pins, but hey, this was the cheapest one available. In most applications not relevant. Sign up using Facebook. You apply the 3V via a resistor which takes care of the voltage difference.
Renan 4, 2 21 You need to do some basic reading on transistor parameters. C P73C Ask Question. I believe the transistor for the speaker circuit just broke IMO, sitting an hour in rain would do it. Email Required, but never shown.
Pawel Veselov 1 5. If so, and I were to order a replacement from, say RadioShack, how would I find one that would work? Sign up using Email dagasheet Password. The way it broke, as it’s there is no sound.
C Datasheet, Equivalent, Cross Reference Search. Transistor Catalog
And what’s with the P73C part? There is a transistor or I think it is for each circuit. For each, one right leg is straight to the batteries, the second left leg is datashret the chip through a resistorand the third one middle is to the outlet from one it’s to the speaker and from another it’s teansistor lights.
C Datasheet(PDF) – List of Unclassifed Manufacturers
Sign up or log in Sign up using Google. Dormant, controller leg has the same voltage that is coming from the battery, and the “out” leg has nothing on it. It looks a lot like a 2SCwhose TO92 packaging matches the image you posted.
All right, so just to settle LVceo – 50V min. And also, how do Transishor tell that it would open when the base-emitter voltage drops, not when it will be applied?