4:35 AM, 4.2.2010
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| Something about SMD Resistor In this article, I’m going to talks about shure earphones resistor code and how you could cal.late the values. This SMD resistor codes is different from the normal resistor color code (color bands) you had seen in the electronic cir.it boards. Surface mount resistors is very much smaller in size than the normal carbon film resistor and because of this the numbers and letters were stamped upon or printed on the top side of the component. Those numbers and letters have a meaning and you could shure sm58that as information to find out or cal.late the desire resistance values. Sometimes the resistors are designed in a very small size until we have diffi.lty to read the code. By using a magnifier gl. we could easily read the resistor codes. There are two types of Shure Microphones mount resistors used in an electronic cir.it board-the 3-digit and 4-digit code SMD. The first two digits represent the two digits in the answer. The third digit represents the number of zero’s you must place after the two digits. The answer will be in Ohms. For example: 104 which mean 10 0000 (4 zero’s) and the final answer is 100k. Let’s cal.late the 4 digit SMD, 1182 which mean 118 00 (2 zero’s) and the final answer is 11.8k. 3 Digit shure e2c 4 Digit Example 0R1=0.1 Ohm 0000= 0 ohms= link or jumper R33=0.33 Ohm 00R1=0.1 Ohm 8R2= 8.2 Ohm 0R47=0.47 Ohm 220 is 22 Ohm and not 220 ohms 1R00=1 Ohm 331= 330 Ohms 1000= 100 Ohm 473=47000 or 47k 8202= 82000=82k Measuring surface mount resistors is very easy with the help of digital multimeter. Most of the times when you check directly on the SMD resistors, you would get the right reading even without lifting a resistor lead. But not all digital multimeter can perform this kind of test. Select only the one that has the output voltage (measure at the probes) of less than 0.6 volts so that it won’t trigger any Shure Microphone devices that can give you a false reading. Once you know how to cal.late the SMD resistor code and using the right way to test SMD resistors on board , you could check lots of shure scl2 Resistor in the shortest time. | |
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