I’m in the process of sourcing the parts for two control boards, a 4PM filter board, and a Polivoks board, but have a few questions on substituting some of the IC’s. Trying to do most of my order from Digikey, but can branch out if necessary.
For the TL072, I found a TL072ACN (Digikey #: 497-7658-5-ND)
For the TL074, I found a TL074ACN (Digikey #: 497-7660-5-ND)
For the LM13700, I found what appears to be the same part (Digikey #: LM13700N/NOPB-ND)
For the LM4250CN, I found what appears to be the same part (Digikey #: LM4250CN/NOPB-ND)
For the 6N137, Digikey recommends 6N137MFS-ND
Any input on these choices would be appreciated, especially what to look for when judging the viability of replacements.
I didn’t want to take the chance of buying fakes on Ebay and brokers are just as much a gamble.
Thank you for a prompt reply, I guess I’ll have to see what I can come up with. Any finding I’ll add here for anyone else looking to build it.
I have another question…
I’ve just finished building the SMR4 board but it causes the main board to crash/hang after a few seconds.
I’ve tried it on another Shruthi and there’s no issue with the CS or SVF boards I have, any ideas?