Capacitor value

[instarep]

Hi guys, just wondering what is this capacitor value. Picture is not very good so here's what it says textually: ( it's the one on the right side)

3m
100
AKA

[fzabkar]

Re: Capacitor value

Can you measure the voltage in-circuit?

[instarep]

Re: Capacitor value

No i Can't but what i can say is that I have an other board like this and on the same position there's different cap's with value:

100
46

this would be 46uf, 100v ???

[budm]

Re: Capacitor value

For that form factor of the SMD cap, the 100 = 10uF. 101 = 100uF, that is how most companies use for marking. The 3m (not the 3M US company) is more likely the company name/symbol.
Do you have capacitance meter? ESR meter? Is the cap bad?

[fzabkar]

Re: Capacitor value

Can you determine whether the capacitor bypasses a particular supply rail? You could test for continuity with known interface pins or IC power pins.

[instarep]

Re: Capacitor value

Hi guys, sorry for the delay. I do have a MSR meter but could this help me figure the value of the capacitor? My MSR meter is pretty cheap and only gives me the inside resistor value... Here a picture of the other board, so C8 and C12 are the ones i need to replace on the other board. Would those be 10uf 46v ?
The cap i need to replace has been accidentally damaged

[budm]

Re: Capacitor value

IC502 is FAN1587 Linear regulator IC
Those to caps are filter cap, one for the adj pin and one for the input pin.
It recommend using 100uF electrolytics cap, so 16V~25V cap should be fine (you can measure the Voltage on the input pin, output pin.
Learn more by looking at the spec sheet attached.
You can tell what the output Voltage should be by looking at the values of resistor network for setting the output Voltage.
I would leave the cap at the adj pin alone but I would change the input and the output caps.

[instarep]

Re: Capacitor value

Thank you very much budm, why manufacturer are making it that hard to read their cap value??
This is a Toshiba barcode printer circuit board.

Anyway, thank you every one for your replies.