From: whit3rd@gmail.com   
      
   On Sunday, May 21, 2023 at 11:33:23 PM UTC-7, whit3rd wrote:   
   > On Sunday, May 21, 2023 at 3:09:37 AM UTC-7, Cursitor Doom wrote:    
   > > Hi all,    
   > >    
   > > Anyone seen one of these before? The IC itself has four bjts on a    
   > > single die according to the schematic, but - again according to the    
   > > schematic - there's no connection for whatever this thing mounted on    
   > > top is, which resembles a very thin button cell   
      
   Oh, the thing on top is the lid; it's grounded (to pin #13, which is to be   
   held non-positive with respect to other connections, it's the IC substrate).   
      
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