Digital Electronics
Digital Electronics
Steren – Phenolic plate 7.5 x 4.5 cm for projects
Steren: 405
Description: Phenolic bakelite plate with copper, 7.5 x 4.5 cm, recorded and perforated with 98 tracks, 125 components and 4 holes for fixing the plate. Ideal for projects or prototypes.
Don Luc
SparkFun – Electrolytic Decoupling Capacitors – 100uF/25V
SparkFun: COM-00096
Description: Electrolytic decoupling capacitors 100uF/25V. These capacitors are great transient/surge suppressors. Attach one between the power and ground of your project to ensure smooth power delivery. High quality radial electrolytic capacitors.
Don Luc
SparkFun – Electrolytic Decoupling Capacitors – 10uF/25V
SparkFun: COM-00523
Description: Low-profile electrolytic decoupling capacitors 10uF/25V. These capacitors are great transient/surge suppressors and work well as charge pump caps for MAX232 circuits. High quality radial electrolytic capacitors.
Don Luc
SparkFun – Diode Rectifier – 1A 50V
SparkFun: COM-08589
Description: This is a simple, very common rectifier diode. Often used for reverse voltage protection, the 1N4001 is a staple for many power, DC to DC step up, and breadboard projects. 1N4001 is rated for up to 1A/50V.
Don Luc
SparkFun – Transistor – NPN (2N3904)
SparkFun: COM-00521
Description: These are very common, high quality BJT NPN transistors made by ST Micro.
Don Luc
SparkFun – Transistor – PNP (2N3906)
SparkFun: COM-00522
Description: These are very common, high quality BJT, PNP transistors made by ST Micro.
Don Luc
SparkFun – ProtoBoard – Rectangle Wired 3″
SparkFun: PRT-08812
Description: This is a different kind of perf board. 3″ long and 2″ wide, the holes are plated through and PCB is double sided like you would expect. All holes are routed together on both sides. The really neat thing about this board is every pad has a 20mil width trace connecting to every other pad. Every pad is shorted together! This actually speeds up prototyping because instead of having to wire from one point to another, you simply cut the traces to isolate the route or pad you want to use. Your board will look a lot better and be more robust without lots of point to point wires to interfere. Standard 0.1″ spacing with a 4-40 (3mm) holes for mounting. Great for quickly prototyping stackable circuits.
Don Luc
SparkFun – Header – 6-pin Female (0.1″, Right Angle)
SparkFun: PRT-09429
Description: This is a through-hole 6-pin right-angle female header. This header connects perfectly with the 6-pin male header on Arduino Pros and LilyPad Main Boards.
Pins are spaced by 0.1″.
Don Luc
SparkFun – Resettable Fuse PTC
SparkFun: COM-08357
Description: This is a handy little device that can save your system from smoking. A resettable fuse (also known as a PTC) is a resistor that has very unique properties.
For this model, if your circuit tries to draw more than 250mA of current (if you have a bad short for instance) the PTC would ‘trip’ (by heating up). The increased resistance (trip state) would break the circuit and allow only a small leakage current.
The leakage current may still be enough to hurt some electronics but it’s much less than the 3A that the short may have allowed. Removing the short, the PTC ‘resets’ and allows current up to 250mA to flow again. It’s a resettable fuse that protects your system! Good for use on battery powered devices that need to protect again high-current accidental discharges.
The thermal pictures to the right do a great job of showing what happens when the PTC is tripped. The first thermal picture shows a voltage regulating circuit in its normal state. In the second picture the circuit is shorted, notice how hot the PTC gets (213 °F!) as it limits the amount of damaging current going through the circuit. Major thanks to Joshua Weaver for the great thermal shots!
Don Luc
Steren – Phenolic plate 4.5 x 4.5 cm for projects
Steren: 155
Description: Bakelite phenolic copper plate of 4.5 x 4.5 cm, engraved and perforated with holes 164 and 4 components to fix the plate. Ideal for projects or prototypes.
Don Luc