What is this electronic component?

[royfang2293]

Can you please help me identify this electronic part?

[dumpystig]

Re: What is this electronic component?

Looks like a cap to me

[mariushm]

Re: What is this electronic component?

Actually, as it says there on the board "PD", I would say both are some sort of power diodes.
The one on the left could be this one:

FAIRCHILD SEMICONDUCTOR - SS34 - DIODE, SCHOTTKY, 3A, SMD, DO-214
http://export.farnell.com/_/dp/1470970

[dumpystig]

Re: What is this electronic component?

It looks like every component designator (R = resistor, C = capacitor etc.) is preceded by a 'P' for some reason.
Just noticed the one on the left, I imagine that will be a diode.

Maybe the 'P' is for Power board...

[royfang2293]

Re: What is this electronic component?

uhm interesting.

Now, Am wondering if a bad capacitor could be causing the power to continuously recycle -causing a strange humming sound. It is a very low humming sound however.

thank you for your help thus far.

[dumpystig]

Re: What is this electronic component?

I doubt the P signifies 'power Cap', 'Power resistor' etc. - look at that tiny resistor on the left, no way is that a power component.

[dumpystig]

Re: What is this electronic component?

Ah, you edited your post...

[royfang2293]

Re: What is this electronic component?

The board is from a laptop that gets power from an ac adapter which may explain why those resistors aren't very big? lol Am not a genius at electronics.

[royfang2293]

Re: What is this electronic component?

Other than "p" stands for power, I have no other clue what it might stand for lol.

[royfang2293]

Re: What is this electronic component?

Well, it is pretty convincing I mean. The "P" only show up near the battery area and the ac adapter socket area.

[mockingbird]

Re: What is this electronic component?

That, if I'm not mistaken (At least the one on the right), is a tantalum capacitor.

[royfang2293]

Re: What is this electronic component?

Ok very nice. Now does anyone know how to read the codes on the capacitor that tell you what the ratings are? I might think about replacing them

[mockingbird]

Re: What is this electronic component?

Can you take a caliper and measure them?

[royfang2293]

Re: What is this electronic component?

Caliper? sounds high tech. I don't really have a caliper but i think i can measure it in mm with an ordinary ruler. It is 8x5 mm.

[mockingbird]

Re: What is this electronic component?

So I'm looking at the two big ones on the right-hand side, the ones with the markings:
330 6DS7 D...

I looked at a few pictures from various manufacturers, I just can't find anything. I'll try to keep looking. Where did this come out of?

[masud]

Re: What is this electronic component?

Obviously,

PQ= Capacitor &
PD= Diod.

[PCBONEZ]

Re: What is this electronic component?

PD = Power Diode

The others are PC.
Which I think must mean > Power Capacitor.
.

[royfang2293]

Re: What is this electronic component?

Oh, this came out of a neoware laptop. Now, the company is owned by hp.

[momaka]

Re: What is this electronic component?

That, if I'm not mistaken (At least the one on the right), is a tantalum capacitor.

It looks like a Tantalum cap to me as well. Best solution is to check it with a multimeter out of the circuit - if it shows open circuit both ways when you measure it for continuity, then it's more than likely a capacitor. If it shows a [continuous] reading one way but not the other, then it's a diode. If it shows short circuit regardless of which way you test it, it's obviously a bad component.

Also, Tantalum caps usually commit a pretty nasty suicide when they go bad (i.e. they burn out - literally), so if it's a Tantalum, it's unlikely to be bad if it reads normal.

With that said, I would suggest you check the rest of the components in the charging circuit - particularly power rails being shorted to ground. The buzzing could be because there is an overload in the charging/power circuit somewhere.

PQ= Capacitor

No.
PQ is for transistor. Just ignore the "P" prefix and you can see that this board has standard marking. C = capacitor, D = diode, R = resistor, Q = transistor, L = inductor.