POD - my observations

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   Once I got
curious how POD database increases over time. So, I wrote a little VB.NET
application to read information from www.pcblibraries.com/pod/.
Every single day at the same time I was acquiring data from that page. I was
waiting for the 1 mil number. When it was reached I was a bit busy, so I am
reporting my findings only now.

Here is
the main graph that illustrates how parts count has changed over time. You can
see that there were two big spikes, there was a decrease and during the rest of
the time part count has changed slightly (or not at all).

515561 new
parts numbers were added during my observation period. You can see the list of
manufacturers that got the most substantial updates below. I was not surprised
to see Vishay on the top of the list and I was not surprised that it took
almost 60 percent of the total change.

  Manufacturer

  Change

  %

  Vishay

  300838

  58.4%

  Susumu

  32546

  6.3%

  Stackpole Electronics

  30999

  6.0%

  API Delevan

  25272

  4.9%

  Microchip

  19208

  3.7%

  CTS

  17448

  3.4%

  TDK

  13702

  2.7%

  ST Microelectronics

  11021

  2.1%

  Bourns

  8439

  1.6%

  Abracon

  7166

  1.4%

  Total

  466639

  90.5%

I have
made some other conclusions as well, but I will not report them at
this point in time. I hope someone will find my observations interesting and
useful.