Re: Dell OptiPlex GX270 - multiple bad cap failures
I dunno about anyone over there other than RS.
Best ask someone on your side of the pond.
Yes FM are much better grade than FC. (In so far as ESR/Ripple ratings.)
[Choosing 10x20mm caps - Ripple/ESR]
MCZ - 2770/.011 <- Close match to Nichicon HN
MBZ, FJ, WG - 2550/.013 <- Close match to Nichicon HM, [FJ =Panasonic, WG = Sanyo.]
FM - 2180/.019
ZLH - 1960/.020 [ ZLH are Rubycon.]
ZL - 1820/.023 [ ZL are Rubycon.]
FC - 1220/.052
Can size is the best way to compare series' because, in the good brands, over a range of uF values, and within a series, all of the the same can size will have the same Ripple/ESR...
But for a specific uF/volts cap the can size may not be the same from one to another.
Example: a 1000uF 10v in brand/series "A" may be 10x20mm but in brand/series "B" it's 10x15mm.
"B" may be a better grade overall but for that specific cap "A" is better.
Happens, but not often unless the grades are pretty close in the first place.
.
MBZ are more or less the typical [standard] grade you find in P4 VRM's.
ZL would be typical in P3 VRM's.
I've seen FC as original in VRM on older P2 boards.
Boards that use more caps can usually get by with lower grades.
.
I dunno about anyone over there other than RS.
Best ask someone on your side of the pond.
Yes FM are much better grade than FC. (In so far as ESR/Ripple ratings.)
[Choosing 10x20mm caps - Ripple/ESR]
MCZ - 2770/.011 <- Close match to Nichicon HN
MBZ, FJ, WG - 2550/.013 <- Close match to Nichicon HM, [FJ =Panasonic, WG = Sanyo.]
FM - 2180/.019
ZLH - 1960/.020 [ ZLH are Rubycon.]
ZL - 1820/.023 [ ZL are Rubycon.]
FC - 1220/.052
Can size is the best way to compare series' because, in the good brands, over a range of uF values, and within a series, all of the the same can size will have the same Ripple/ESR...
But for a specific uF/volts cap the can size may not be the same from one to another.
Example: a 1000uF 10v in brand/series "A" may be 10x20mm but in brand/series "B" it's 10x15mm.
"B" may be a better grade overall but for that specific cap "A" is better.
Happens, but not often unless the grades are pretty close in the first place.
.
MBZ are more or less the typical [standard] grade you find in P4 VRM's.
ZL would be typical in P3 VRM's.
I've seen FC as original in VRM on older P2 boards.
Boards that use more caps can usually get by with lower grades.
.
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