Most resistors have value marked on them. For surface mount resistors, this can be one of several options. They can be a 3 or 4-digit code representing the value using a value and multiplier system. For example, 102 would represent 10²or 1kΩ, the 4-digit type could be 1002 which is 100 x 10² or 10KΩ.
1. Keep one hand still, holding the component in place with the tweezers. 2. By now, the soldering iron should be hot. Get a small to medium sized dot of solder on the tip. 3. Pick any corner pin on the component. 4 . Touch and hold the soldering iron to the pad that will be associated with that pin.
11. Resistors in this situation are about current limiting. If you applied your 2.3V micro output directly across a transistor base-emitter junction, the transistor would try to draw far more current than is really needed, which would harm either the transistor, the micro, or both. So you put a 500 ohm or 1K resistor in series and this limits
One way to increase the thermal mass is to pot the circuit. You can also use a large or large number of heat sinks (e.g. mount all the LED's on an aluminum bar). However, if you're really generating a lot of heat and can't use active cooling, the goal is often to thermally connect the heat source with the outer casing in the hopes that
So the “06” in the 0603 package name means it is .06 inches in length and the “03” means it is .03 inches in width. The standard dimensions of an 0603 package are: Length: 1.55 ± 0.05 mm. Width: 0.85 ± 0.05 mm. Height: 0.45 ± 0.05 mm. Because of this potential for confusion, component manufacturers overwhelmingly default to using the
In a thin film resistor, the conductive layer is deposited in a vacuum process, known as sputtering. This creates a thin but uniform layer, only fractions of a micron thick, over a ceramic substrate. Once in place, this layer is then subjected to a photo or laser etching process. This determines the accuracy of the resistance value with a very
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do smd leds need resistors
