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Author Topic: SMD Capacitor Value?  (Read 1203 times)

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Offline Johnny10Topic starter

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SMD Capacitor Value?
« on: September 13, 2018, 04:51:27 pm »
I am doing a repair and I am very confused about the on chip numbering.

A capacitor reads 226V 40372

Looking up this part I have 22uF 40Volt   ( Vishay ) ?

But another lookup reference says AVX  22uF 6Volt 

Not sure which is correct.
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Offline Johnny10Topic starter

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Re: SMD Capacitor Value?
« Reply #1 on: September 13, 2018, 05:16:52 pm »
OK So I am not always with it !

« Last Edit: September 13, 2018, 05:30:57 pm by Johnny10 »
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Tektronix TDS7104, DMM4050, HP 3561A, HP 35665, Tek 2465A, HP8903B, DSA602A, Tek 7854, 7834, HP3457A, Tek 575, 576, 577 Curve Tracers, Datron 4000, Datron 4000A, DOS4EVER uTracer, HP5335A, EIP534B 20GHz Frequency Counter, TrueTime Rubidium, Sencore LC102, Tek TG506, TG501, SG503, HP 8568B
 

Online xrunner

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Re: SMD Capacitor Value?
« Reply #2 on: September 13, 2018, 05:24:07 pm »
Quote from: Johnny10 on September 13, 2018, 05:16:52 pm
OK So I am not always with it !

It's OK Johnny10, you can still keep your membership here.  ;)
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Online coromonadalix

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Re: SMD Capacitor Value?
« Reply #3 on: September 13, 2018, 09:09:07 pm »
To be sure  measure the supply voltage(s) ... and choose the right vcc specs
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Offline PKTKS

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Re: SMD Capacitor Value?
« Reply #4 on: September 14, 2018, 11:11:41 am »
Quote from: coromonadalix on September 13, 2018, 09:09:07 pm
To be sure  measure the supply voltage(s) ... and choose the right vcc specs

That is a smart decision *BUT*  it will not solve the overall problem

It has become an increasingly  and dangerously problem to deal with todays
"MODERN"  part  descriptors.

OLD SCHOOL parts are responsible marked and chances to make mistakes are small

What will prevent a mistaken part being fitted at production as these "MARKS" or codes
are absolute obscure and non trivial ?

The result of a BAD MLCC  just exploding with a 9V bat change.

From a DMM, removed the old... inserted the new BAT .. power .. BOOM!

I can read like xx06 from what is left but without the proper voltage rating...

Only your advice of measuring to be sure.  Yes it makes sense - each day more sense
I did that to replace that with a proper robust THT

SMD has become a dangerous stuff. like this one
« Last Edit: September 14, 2018, 11:13:29 am by PKTKS »
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