EMI Damper on 128k/512k system board

[RichCini]

All --

I could swear that there was a thread recently about the EMI dampers on the Macintosh (128k/512k) motherboards, but for the life of me, I can't find it. On the board, they're labeled "CRL 8545L" (DIP20) and I imagine they're either an RC or LC damper, but Googling that number doesn't come up with much. Does anyone have a replacement part number for it? The Mac Plus motherboard I have has a totally different chip, "115-0006" and it's not plastic encapsulated.

Thanks!
Rich

 

[stepleton]

I can't help with the part, but thread-wise, is it possible that you were thinking of this series of posts on the cursed turkey website?

 

[RichCini]

I do remember seeing that post, so maybe that's what I was thinking of. I thought someone had mentioned the Bourns replacement for it. Googling Hytek RC1150002 doesn't produce much, but it looks like an RC filter (just guessing from the part number). Quite possibly could be this from Bourns: 4120R-601-250/201LF which is a 25 ohm/200pF network. I've seen this reference when discussing an SE/30 restoration, so odds-on that's it.

Thanks for the memory jog!
Rich