General > General Technical Chat
Salvaging and "renew" an IC
Rat_Patrol:
--- Quote from: coppercone2 on August 11, 2020, 11:47:48 pm ---100vdc is a bit hit for solenoids I think??
--- End quote ---
100vdc boost to open, then they drop down to 24vdc hold voltage.
They work just like a large fuel injector, and I think the IC they originally used WAS a modified fuel injector IC.
coppercone2:
if this is automotive environment, you might have even more cautions about reusing the chips. They will take extra hard abuse here.
maybe the old company has masks? hidden away in a corporate archive some where so they can restart production at a slightly reduced cost? never know if tooling was kept.. some people just keep old stuff in case this happens. Never know..
Rat_Patrol:
--- Quote from: coppercone2 on August 12, 2020, 11:58:56 pm ---if this is automotive environment, you might have even more cautions about reusing the chips. They will take extra hard abuse here.
maybe the old company has masks? hidden away in a corporate archive some where so they can restart production at a slightly reduced cost? never know if tooling was kept.. some people just keep old stuff in case this happens. Never know..
--- End quote ---
Originally made by Motorola. I actually went down that rabbit hole, and between "we don't have it" and "custom IC, we won't do it", that just isn't a possibility.
I think that the Bosch IC that I found may be a good option. It won't take much of a micro (or code) to translate the on/off signals from the primary processor to whatever protocol the Bosch uses.
coppercone2:
how about repackaging ? maybe you can have them repacked in new plastic with new wire bonds for some modest sum?
Not actually sure how well a rebonded IC works. Maybe tthe chip has a excess of material on the bond pads so you can use a high end micromachining CNC to strip the old metal and reweld it... or deposit more metal on it
Not sure if you would need to laser remove the old wire or if they have machinery to mechanically mill it out (I saw something in a youtube video with a nasa 'finishing' machine that had insane specifications).
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