Making a custom resistor network from a BGA design

[Steve]

Hey guys,

Would appreciate some advice as the best way to go about this. The following RT1430B6 'type F' BGA resistor network seems impossible to find and I'm wondering if it can be re-created with some ingenuity.

If I got 2x 10pin resistor SIL arrays, soldered them to the top & bottom corresponding line of pads ... then ran a wire down the centre pads which are common/gnd, then linked the common pin of the two resistor arrays to this gnd line - would it be ok? Sorry! hard to explain! :)

Code: Select all

--------------------
| | | | | | | | |
 * * * * * * * * *
*-*-*-*-*-*-*-*-*
* * * * * * * * *
| | | | | | | | |
--------------------

RT1430B6.pdf

[exxos]

Use Style C and link the 2 middle rows as that will do Style F.. ? I think it would be a nightmare to solder a BGA chip anyway.

Normal SIL resistors do the same thing, one common pin to gnd, rest is you "termination". But I'm not a fan of that personally. But also depends on how much current you are pushing through the resistors.

[Steve]

I can't use C style as this board repair already uses F style and the pad layouts are different.