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Alex

Macintosh SE/30 list of capacitors

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Hello

 

I am going to be reworking the logic board on an SE/30 and am looking for a list of capacitors for the board.

 

The board I have has already gone through a repair by an unknown third party and I intend to remove all the caps he put in place.

 

I would like to install the original electrolytic capacitors and other caps that the board hosted. I don't want to go with tantalum capacitors because of their very disruptive end of life characteristics, namely they can blow up.

 

I would appreciate if someone in the know could provide me a list of caps and their respective locations.

 

Kindest regards

—Alex

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Someone used to sell kits but no longer. I would buy one too. I need to recap 2 IIcis, a IIsi, an SE/30 and a Plus. I also need to fix a power board on a Jasmine 20MB Direct Drive.

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Are these correct? Please help me a little further. 

 

I found the following on mouser.com. Could I please ask you if the choices made via the links pasted are indeed the correct items? What about brands? Which are the best? There is Nichicon, Vishay, Lelon, Cornell, any advice on brand reputation?

 

10 - 47µf - 16V - SMT

http://pl.mouser.com/ProductDetail/United-Chemi-Con-UCC/HHXC160ARA470ME61G/?qs=u4fy%2fsgLU9PB4oWMgjYECw%3d%3d

 

 

1 - 220µf - 16V - Axial

(mouser mentions ripple currents of 210, 260 and 298 mA) - which is recommended?

http://pl.mouser.com/ProductDetail/Vishay/MAL213835221E3/?qs=sGAEpiMZZMtZ1n0r9vR22V3UFFJUd5NrFZ2eOPpb6YM%3d

 

 

1 - 470µf - 16V - Axial

http://pl.mouser.com/ProductDetail/Vishay-BC-Components/MAL213835471E3/?qs=sGAEpiMZZMtZ1n0r9vR22V3UFFJUd5NrcJiUFeOA0js%3d

 

 

1 - 1µf - 50V - SMT

(I don't know which to choose)

http://pl.mouser.com/Passive-Components/Capacitors/_/N-5g7r?P=1z0z7ymZ1z0wrj5Z1yx4avv&Keyword=SMT&FS=True

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I, too, would like a definitive link for the caps to use, since I'm a novice soldering iron slinger. There are so many capacitors to choose from, even among similar ones.

 

I also buy from arrow.com, so the tantalums that I referred to above are these at Arrow.

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Isn't someone here selling a kit with all the necessary capacitors for ten bucks?

I still do that. I don't know why your respondent claims I don't. Please see the stickied thread in Trading Post.

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I still do that. I don't know why your respondent claims I don't. Please see the stickied thread in Trading Post.

Sorry, I was referring to this post 

https://68kmla.org/forums/index.php?/topic/18754-fs-compact-mac-analog-re-cap-kit-15/

 

I wasn't aware there was another source. I would also just rather buy kits so I didn't have to figure out what I need. Apologies.

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I maintain a list of replacement capacitors at https://www.hobbesnet.org/wiki/macintosh:logic-board-capacitors. I have links to specific part numbers I use. I only have part numbers for aluminum electrolytic and aluminum polymer. These are more difficult to solder than tantalum (mainly due to the very small leads). I haven't been convinced that tantalum are better for this purpose. Ease of soldering might ultimately be a big enough factor to tip the scales in my mind. For now I'm sticking with polymer though. Some day I will figure out the best sizes for tantalum replacement parts for comprehensiveness.

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Thanks, trag! When I'm ready to do it, I'll buy from you. Does your kit include tantalums?

 

Yes, I only use tantalums, except for the Axials, of course.  But all the Surface Mount Electrolytic cans are replaced with tantalums.

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Sorry, I was referring to this post 

https://68kmla.org/forums/index.php?/topic/18754-fs-compact-mac-analog-re-cap-kit-15/

 

I wasn't aware there was another source. I would also just rather buy kits so I didn't have to figure out what I need. Apologies.

 

I see the source of confusion.

 

The topic at the beginning of this thread is Logic Board caps.   I provide tantalum and axial replacements for most of the logic board caps that Apple used on the pre - 2000 Macs.

 

The link you were looking at was for sets of Analog Board caps, which is also a very useful service and I wish CC333 was still providing them.    But different from what I provide.

 

I do not sell analog board kits, although I have a stock of the MR824 rectifiers used on some Analog Boards.    Happened across a good lot on Ebay and it's more than I'm ever going to be able to use.

 

It's good that more folks have learned how to order their own from Mouser and Digi-Key and such.   When I started providing them, most folks found that too complex, and Digi-Key had a $25 minimum order.   That was the main reason I started providing them.   So that folks who might otherwise find getting the caps too daunting, would be able to get the caps and fix their Macs.

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Yes, I only use tantalums, except for the Axials, of course.  But all the Surface Mount Electrolytic cans are replaced with tantalums.

 

From what I understand, tantalums can exhibit rather violent deaths, ie explode suddenly and uncontrollably. What are your thoughts?

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My thought is that I have yet to see that ever happen, except when someone installs one with the polarity reversed.  Some models of Mac Logic boards were built with tantalums from the factory, and I've never seen a report of a single one of those having failed from capacitor damage.

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