what you need to do is build the DC servo out of another dynahi, you know for symmetry. then you have to build the servo for the servo out of another dynahi. this would continue forever.
depends if they're to be used instead of paying higher prices later, or to be sold later for a profit. factor in the time/labor of unloading the parts 1, 2, or 5 at a time, probably over several years
i checked my earliest 2SA1968LS purchase from bdent (in 2006) i paid $3.90 a piece then.
i'd guarantee the one in the photo is real. is that the stock you will actually receive is the question.
i remember when mikhail had a couple thousand 2SA1968. i'm sure the price from Sanyo was in the 20-40 cents range. he just bought any parts he might someday use -- that was when he was going to build a point to point Blue Hawaii. wonder what happened to them..
doh. the ones in the eBay pic look real though. all the 2SA1968 fakes ive seen are clearly fake if you've seen a real one.
edit: i thought the Dalbani name was familiar, but the ebay link says they're in Florida, so i thought it was someone else
if anyone is looking for 2SA1968 transistors, these visually appear to be authentic parts at a good price: http://www.ebay.com/itm/5pcs-2SA1968LS-Original-New-Sanyo-PNP-Dynamic-Focus-Transistors-A1968LS-/110935720719?pt=LH_DefaultDomain_0&hash=item19d448c30f#ht_3700wt_1398
if anyone is looking for 2SA1968 transistors, these visually appear to be authentic parts at a good price: http://www.ebay.com/itm/5pcs-2SA1968LS-Original-New-Sanyo-PNP-Dynamic-Focus-Transistors-A1968LS-/110935720719?pt=LH_DefaultDomain_0&hash=item19d448c30f#ht_3700wt_1398
i went with the Vishay SMM0204. way better than thick film chip resistors, but price isnt too crazy.
Thick Film 1206 1% - around $12/5000pcs
Vishay SMM0204 1% thin film (the round MELF package) - I managed to find these for about $35-50/3000pcs
Vishay TNPW 0.1% thin film - about $900/reel...ehh no thanks, i need around 15 values...
i dont have the BOM in front of me for the T2, but here is what I know that may affect builds:
input JFETs:
2SK389 - discontinued years ago
2SK170 singles - now discontinued
Linear Systems LSK389 - only available matched pair
Nearly all Toshiba thru-hole npn/pnp transistors have been end-of-lifed or discontinued
Same for the high-voltage parts 2SC3675 and 2SA1968
Unsure what the status is of the thru-hole NEC 2SA1486
all done, dropping them off at the post office tomorrow.
will be listing single jacks on eBay, link coming later
links can be found on the original post -