Useful Online Tools and References

There are a lot of useful tools on-line.  I got busy and organized some of the ones I use often.  Perhaps you'll find these useful.  Please share others that you use.

I installed these in the bookmark toolbar in Firefox. 

Save to Parts List

Bookmark for Arena PartSaver to organize components in a Google Docs spreadsheet

DigChip IC Database
Datasheet, cross-reference and functional listing of integrated circuits

FindChips
Locate integrated circuits

Resistor Value Table
Table of standard values

Standard Capacitor Values
Table of standard values

Copper Wire Table
Properties of copper wire

Google Translate
Translate foreign phrases and web pages

OCR
Convert scanned documents to text

Image Vectorization
Convert images to vector format

Trace Width Calculator
Calculate the needed trace width on a printed circuit board

Trace Resistance Calculator
Calculate the resistance of a printed circuit trace

Gerber Viewer
On-line Gerber file viewer.  Check Gerbers before submitting for fab

FreeDFM
On-line printed circuit board check

Thread & Tap Table - Imperial
Tap & clearance hole sizes, inch dimensions

Screw & Tap Table - Metric
Tap & clearance hole sizes, inch dimensions

Surface Finish Table
Surface finish achievable by various machining methods

Sheet Metal Gage Table
Sheet metal gage

Fractional Inch / mm Table
Fraction conversion table

Voltage Divider Calculator
Voltage divider calculations

Parallel Resistors
Calculate parallel resistor values

LED Resistor Calculator
Calculate LED resistors

Heat Sink Calculator
Determine heatsink requirements

Engineering Calculator -EEWeb
Wide range of calculations

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