Find IC Package Specs: Dimensions, Pitch & More

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SUMMARY

This discussion focuses on finding physical specifications for various integrated circuit (IC) packages, particularly surface mount technology (SMT) varieties like SOT-108, SOT-337, and SOT-402. Users express frustration over the lack of easily accessible comparative data for these packages while shopping on platforms like Mouser and Digikey. Key resources shared include the Texas Instruments package guide and several Wikipedia pages that provide insights into chip carriers and integrated circuit packaging. It is emphasized that users should verify specifications against specific datasheets due to inconsistencies among manufacturers.

PREREQUISITES
  • Understanding of integrated circuit (IC) packaging terminology
  • Familiarity with surface mount technology (SMT) components
  • Basic knowledge of reading datasheets
  • Experience using electronic component distributors like Mouser and Digikey
NEXT STEPS
  • Research the Texas Instruments package guide for detailed IC specifications
  • Explore Wikipedia pages on chip carriers and integrated circuit packaging for comprehensive overviews
  • Learn how to interpret CAD drawings of IC packages
  • Investigate common discrepancies in IC specifications among different manufacturers
USEFUL FOR

Electronics engineers, PCB designers, and hobbyists seeking to understand and compare physical specifications of various IC packages for effective component selection and design.

Jiggy-Ninja
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Is there some place online where I can find physical specs (dimensions, pitch, etc) for various IC packages, especially all the jillions of SMT varieties, so I can easily compare them?

I'm doing some shopping on Mouser/Digikey, and I don't have any easy way of knowing what the differences are between things like SOT-108, SOT-337, and SOT-402 (which all look the same in the pictures), or if there even are any significant differences.
 
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That's quite annoying, no? You should be able to flip through to the end of the datasheet for package dimensions (CAD drawing of the IC along with the dimensions). Sometimes, you can even see suggested footprints (those these are really quite rare).

The following page (and some of the ones linked to on the left-hand column) may be of benefit. Keep in mind, different manufacturers often have a nasty habit of not always following each-others specs, so always verify footprints against specific datasheets.
http://www.ti.com/sc/docs/package/guide.htm

The obligatory Wikipedia / Wikia pages that may be of some benefit:
http://en.wikipedia.org/wiki/Chip_carrier
http://en.wikipedia.org/wiki/Integrated_circuit_packaging
http://en.wikipedia.org/wiki/List_of_chip_carriers
http://how-to.wikia.com/wiki/Howto_identify_chip_packages
 

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