Diode Small Signal - 1N4148

This is a very common signal diode - 1N4148. Use this for signals up to 200mA of current.

If you need a bunch of these, you can get good bulk discounts on Digikey, part # : 1N4148FS-ND

Diode Small Signal - 1N4148 Product Help and Resources

Button Pad Hookup Guide

January 7, 2016

An introduction to matrix scanning, using the SparkFun 4x4 Button Pad.

Flyback Diode

This part is used in our SparkFun Inventor’s Kit as a flyback diode to prevent voltage spikes. For more information, try looking at some of the examples linked below that use this diode:


Core Skill: Soldering

This skill defines how difficult the soldering is on a particular product. It might be a couple simple solder joints, or require special reflow tools.

1 Soldering

Skill Level: Noob - Some basic soldering is required, but it is limited to a just a few pins, basic through-hole soldering, and couple (if any) polarized components. A basic soldering iron is all you should need.
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Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

3 Electrical Prototyping

Skill Level: Competent - You will be required to reference a datasheet or schematic to know how to use a component. Your knowledge of a datasheet will only require basic features like power requirements, pinouts, or communications type. Also, you may need a power supply that?s greater than 12V or more than 1A worth of current.
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