Hi, dear colleagues!
Could You clear next question -
my customer want series reference with long term drift about (no worse than) 8 ppm/1kH (1000 hours),
and in hermetic package.
The same was an LT1021-7 (in TO-92 package), but now it is obsolete.
What actual or pre-release reference do You advice?
The LT1021-7 is available in TO-5 package which has the same specs as that of the TO-92. We also has the RH1021-7 which has the same specs as the LT1021-7 and also in TO-5 package.
Thanks! Could You clear, what part number for LT1021-7 in TO-5 package (I can't find it)? Or You mean this IC in SOIC or PDIP package?
Sorry for the wrong information I've given. The only one that fits the bill is the RH1021-7. The LT1021-7 in T0-5 package is already obsolete too.