3mm LEDs and a few other things like transitors

[Outlaws]

I just ripped open an old DVD play and found a wealth of caps.  1uf, 10uf, 47uf, 100uf, 1000uf, 4.7uf, 470uf....I think that is what most are, plus a few others that are off the wall.  THere is also some resistors that I need to study up on using the color code to figure out their values.

But anyways, there are a couple parts that I know of that I would like to get some info on.


Capacitors:
They are black with a black "rubber" around them.  Are they anything usable?


3mm LEDs:
I never bought or even cared to reseach 3mm LEDs because, well, frankly they are too small IMO.  But now I have 3 of them and I don't know how to mount them in a pedal.  Is there any mounts for these?  If not I will just save them to use for Boss pedal replacements.  Do I use standard resisort values for them though?  4K7?


Transistors:
9015 C
9014 C
NEC B772 (this one is wierd looking.  It has a hole in the middle and is a rectangle shape)
I found very little on these while googleing.  Are most trasistors interchangable?  Can I drop these in something I am building for fun without too many worries?

Diodes:
IN4004
ER105
Then there is a couple Bigger suckers.
SBC360


Other stuff:
78L05 921P
Looks like a transistor, but a goodle of 78L05 shows a 3 terminal positive regulator.  PCB ID says its an IC.  Is that a tranny and can I use it as one?


LM431
This one is is marked as with "U" prefix on the PCB.
Googleing turned up this:
http://www.smd.ru/files/upload/1257/ru/lm431acm3.pdf
Same logo as what is on my chip.  Says its good for a "zener diode".  WHatever that is lol.



Thats all for now.  THere are a few more caps I can't read until I desolder them, but I am just wondering if anything other than my previously mentioned caps are usuable to me.

Thanks.

[KORGULL]

There are mounts available for 3mm LEDs. Jameco has some: part#95513CX.

Do I use standard resisort values for them though? 4K7?

That'll work. Just use the same methods of figuring the resistor value as you would for the 5mm LEDs. If you just want to guess: something between 2K and 10k is a pretty safe bet. Adjust the value for desired brightness/current drain.
R.G. just posted some good info on figuring out LED-resistor values the other day on the main forum if you want to find it and eliminate any guesswork in the future.
If those LEDs were inside the DVD player they might be infrared ones - you may want to test them to be sure they throw off visible light before planning on using them.

Transistors:
9015 C
9014 C
NEC B772 (this one is wierd looking. It has a hole in the middle and is a rectangle shape)
I found very little on these while googleing. Are most trasistors interchangable? Can I drop these in something I am building for fun without too many worries?

Those transistors might be Japanese or something so maybe there's not much info around on them. Try going to the NTE (semiconductor replacement) website http://nte01.nteinc.com/nte/NTExRefSemiProd.nsf/$$Search?OpenForm punch in your part #'s and you will get the NTE equivalent part#. Check out that data sheet - it should give you some idea what you have there.
I don't think the NEC B772, LM 431 or the 78L05 voltage regulator will be usable in stompboxes. Maybe if you build a power supply sometime... :wink:
You should be able to use the 1N4004 diode for clipping in a fuzzbox. I don't know what the other diodes are but I don't think it would hurt anything to just try them out.

[Outlaws]

1N4004

LMFAO

I didn't even think of googleing with a "1" instead of an "I".   :oops:


Thanks.


Here are a couple links to the NTE version.

Its a bit over my head, but any info on what they are good for would be nice.  



Transistors:

9014C = NTE123AP  (NPN)
http://www.nteinc.com/specs/100to199/NTE123AP.html

9015C = NTE290A  (PNP)
http://www.nteinc.com/specs/200to299/NTE289A.html

B772 = NTE185  (PNP)
http://www.nteinc.com/specs/100to199/NTE184.html


Diodes:

SB360 = NTE579  (This is the big diodes I have.  Almost the size of a 16v radial cap)
http://www.nteinc.com/specs/500to599/pdf/nte579.pdf




There is also a couple mylar looking caps.
104
221
222
The numbers are underlined.


This one is light blue colored.  Here is how the type is...

B
331K
1KV

Then there is a big blue one but the text is so small I can't read it.  Is there any way to test these with my DMM?


Also, just for fun, I can use a 50 volt cap in a stompbox, but is it still okay to use a 400v monster?   :lol:   I got it, and I mean...if I got room, what the hey...ya know...  :lol:

[KORGULL]

Korgull wrote:

I don't think the NEC B772, LM 431 or the 78L05 voltage regulator will be usable in stompboxes.

I should have said that these parts don't seem to be used alot in stompboxes... The 78L05 is definitely used in some effect circuits - like the PT-80 delay and probably many others that I don't know of off hand. It provides a steady +5V to the circuit. I doubt that it can be used in place of a regular bi-polar transistor.
Zener diodes are also used as voltage regulators when they are reverse biased. I think they are like typical rectifier diodes (like the 4004) when they are forward biased so maybe can be used for clipping also. I don't know if this applies to your LM 431 or not.
I'm still not sure about the NEC B772 (my computer takes too long to download some datasheets) but from your description it sounds like something that is not used in low power circuits like stompboxes.

Here are a couple links to the NTE version.

Its a bit over my head, but any info on what they are good for would be nice.  

Transistors:

9014C = NTE123AP (NPN)
http://www.nteinc.com/specs/100to199/NTE123AP.html

9015C = NTE290A (PNP)
http://www.nteinc.com/specs/200to299/NTE289A.html

B772 = NTE185 (PNP)
http://www.nteinc.com/specs/100to199/NTE184.html

If you get the pin-out of the transistor and whether it is NPN or PNP you can at least know if and how it can get placed in your circuit, then you can use your ears to hear if it sounds O.K. or not.

There is also a couple mylar looking caps.
104
221
222
The numbers are underlined.

This one is light blue colored. Here is how the type is...

B
331K
1KV

Then there is a big blue one but the text is so small I can't read it. Is there any way to test these with my DMM?

If your meter has a capacitance setting you can check them.
For the ones you already have the numbers for you don't need the meter though.
Example: 104
1=first number of the value, 0=second number of the value, 4=the number of zeros to add on to the end. The answer is always in pico-farads.
100000pF - to convert to micro-farads divide by 1,000,000
So...104 = 100000pF = 0.1uF
221 = 220pF = .00022uF
222 = 2200pF = .0022uF
331 = 330pF = .00033uF  K is the tolerance rating which is +/- 20%. 1KV is the max voltage rating.
There's some detailed explanations posted around the web if you need to know more. I don't have any links to them handy though.

[Outlaws]

Cool thanks.