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I know there are other questions about standard naming, such as this one, but so far I have not found any answers to this particular question: "What do Linear Technology's components' prefixes (e.g. LT, LTC, or LTM) indicate, other than that they are produced by Linear Technology?"

I asked my local sales representative, he did not know, and I felt too sheepish to pester him with arguably unimportant questions. However, I do not think it is random. It doesn't seem to correlate with device type (e.g. usually there are at least two different prefixes within a category like opamps, ADCs, etc.) Perhaps it has to do with the fabrication process? If anyone knows or has conjectures to offer I would appreciate hearing them.

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As per Ordering Info document:

Product Designator
a. LT indicates a proprietary bipolar device
b. LTC indicates a proprietary CMOS device
c. LTM indicates a proprietary μModule device
d. RH indicates a LTC radiation tolerant device
e. OP and REF are second source devices

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  • \$\begingroup\$ Thank you for providing a link to that document! Now I will stop wasting time wondering :) \$\endgroup\$
    – jacobq
    Jul 20, 2016 at 15:08
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    \$\begingroup\$ I believe the last time I saw this question come up, it was claimed the LT vs LTC distinction is not strict. Some LTxxx parts may be CMOS or some LTCxxxx parts may be bipolar. I haven't confirmed this by looking for actual exceptions, though. \$\endgroup\$
    – The Photon
    Jul 20, 2016 at 15:44
  • \$\begingroup\$ Eugene Sh. answer is almos right but, as The Photon says, this distinction is not so strict... for example, LT8612 contains mosfet devices. \$\endgroup\$
    – Sim1
    Mar 27, 2017 at 15:11
  • \$\begingroup\$ For power converter products, the CMOS vs. BiPolar rule doesn't hold up these days. Rather, LT vs. LTC indicates which of the two major power products divisions within the company designed the part. \$\endgroup\$
    – user49628
    Mar 27, 2017 at 16:09

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