[>>PakFones<<]

gsmkasargod have posted also very useful information about reading SMD resistors and capacitors. http://forum.gsmhosting.com/vbb/f16/.../#post10324184. i just copy his post to bring all useful info at one thread.

SMD Resistor Coding

All SM resistors conform to a 3-digit or 4-digit code. But there are a number of codes, according to the tolerance of the resistor. It's getting very complicated.

Here is a basic 3-digit SM resistor:

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 OHMS. For example GIVEN: 334 is written 33 0 000. This is written 330,000 ohms. The comma can be replaced by the letter "k". The final answer is: 330k.

222 = 22 00 = 2,200 = 2k2

473 = 47 000 = 47,000 = 47k

105 = 10 00000 = 1,000,000 = 1M = one million ohms

There is one trick you have to remember. Resistances less than 100 ohms are written: 100, 220, 470. These are 10 and NO zero's = 10 ohms = 10R

or 22 and no zero's = 22R or 47 and no zero's = 47R. Sometimes the resistor is marked: 10, 22 and 47 to prevent a mistake.

TAKE-NOTE:

R = ohms

k = kilo ohms = 1,000 ohms

M = Meg = 1,000,000 ohms

The 3 letters (R, k and M) are put in place of the decimal point. This way you cannot make a mistake when reading a value of resistance.

for 3 digit code mao ni xa ang mga common number based on my experience:

0R1 = 0.1 ohm

R22 = 0.22 ohm

R33 = 0.33 ohm

R47 = 0.47 ohm

R68 = 0.68 ohm

R82 = 0.82 ohm

1R0 = 1R or 1 ohm

1R2 = 1R2 or 1.2 ohm

2R2 = 2R2 or 2.2 ohm

3R3 = 3.3 ohm

4R7 = 4.7 ohm

5R6 = 5.6 ohm

6R8 = 6.8 ohm

8R2 = 8.2 ohm

100 = 10R or 10 ohm

120 = 12R or 12 ohm

150 = 15R or 15 ohm

180 = 18 ohm

220 = 22 ohm

270 = 27 ohm

330 = 33 ohm

390 = 39 ohm

470 = 47 ohm

560 = 56 ohm

680 = 68 ohm

820 = 82 ohm

101 = 100 ohm

121 = 120 ohm

151 = 150 ohm

181 = 180 ohm

221 = 220 ohm

271 = 270 ohm

331 = 330 ohm

391 = 390 ohm

471 = 470 ohm

561 = 560 ohm

681 = 680 ohm

821 = 820 ohm

102 = 1 kilo ohm

122 = 1.2 kilo ohm

152 = 1.5 kilo ohm

182 = 1.8 kilo ohm

222 = 2.2 kilo ohm

272 = 2.7 kilo ohm

332 = 3.3 kilo ohm

392 = 3.9 kilo ohm

472 = 4.7 kilo ohm

562 = 5.6 kilo ohm

682 = 6.8 kilo ohm

822 = 8.2 kilo ohm

103 = 10 kilo ohm

123 = 12 kilo ohm

153 = 15 kilo ohm

183 = 18 kilo ohm

223 = 22 kilo ohm

273 = 27 kilo ohm

333 = 33 kilo ohm

393 = 39 kilo ohm

473 = 47 kilo ohm

563 = 56 kilo ohm

683 = 68 kilo ohm

823 = 82 kilo ohm

104 = 100 kilo ohm

124 = 120 kilo ohm

154 = 150 kilo ohm

184 = 180 kilo ohm

224 = 220 kilo ohm

274 = 270 kilo ohm

334 = 330 kilo ohm

394 = 390 kilo ohm

474 = 470 kilo ohm

564 = 560 kilo ohm

684 = 680 kilo ohm

824 = 820 kilo ohm

105 = 1 mega ohm

125 = 1M2 or 1.2 mega ohm

155 = 1.5 mega ohm

185 = 1.8 mega ohm

225 = 2.2 mega ohm

275 = 2.7 mega ohm

335 = 3.3 mega ohm

395 = 3.9 mega ohm

475 = 4.7 mega ohm

565 = 5.6 mega ohm

685 = 6.8 mega ohm

825 = 8.2 mega ohm

106 = 10M0 or 10 mega ohm

& so on

for 4 digit code mao ni xa ang mga common number based on my experience

0000 = 00R

00R1 = 0.1 ohm

0R22 = 0.22 ohm

0R47 = 0.47 ohm

0R68 = 0.68 ohm

0R82 = 0.82 ohm

1R00 = 1R or 1 ohm

1R20 = 1R2 or 1.2 ohm

2R20 = 2R2 or 2.2 ohm

3R30 = 3.3 ohm

4R70 = 4.7 ohm

5R60 = 5.6 ohm

6R80 = 6.8 ohm

8R20 = 8.2 ohm

10R0 = 10R or 10 ohm

12R0 = 12R or 12 ohm

15R0 = 15R or 15 ohm

18R0 = 18 ohm

22R0 = 22 ohm

27R0 = 27 ohm

33R0 = 33 ohm

39R0 = 39 ohm

47R0 = 47 ohm

56R0 = 56 ohm

68R0 = 68 ohm

82R0 = 82 ohm

91R0 = 91 ohm

1000 = 100 ohm

1200 = 120 ohm

1500 = 150 ohm

1800 = 180 ohm

2200 = 220 ohm

2700 = 270 ohm

3300 = 330 ohm

3900 = 390 ohm

4700 = 470 ohm

5600 = 560 ohm

6800 = 680 ohm

8200 = 820 ohm

9100 = 910 ohm

1001 = 1 kilo ohm

1201= 1.2 kilo ohm

1501 = 1.5 kilo ohm

1801 = 1.8 kilo ohm

2201 = 2.2 kilo ohm

2701 = 2.7 kilo ohm

3301 = 3.3 kilo ohm

3901 = 3.9 kilo ohm

4701 = 4.7 kilo ohm

5601 = 5.6 kilo ohm

6801 = 6.8 kilo ohm

8201 = 8.2 kilo ohm

9101 = 9.1 kilo ohm

1002 = 10 kilo ohm

1202 = 12 kilo ohm

1502 = 15 kilo ohm

1802 = 18 kilo ohm

2202 = 22 kilo ohm

2702 = 27 kilo ohm

3302 = 33 kilo ohm

3902 = 39 kilo ohm

4702 = 47 kilo ohm

5602 = 56 kilo ohm

6802 = 68 kilo ohm

8202 = 82 kilo ohm

9102 = 91 kilo ohm

1003 = 100 kilo ohm

1203 = 120 kilo ohm

1503 = 150 kilo ohm

1803 = 180 kilo ohm

2203 = 220 kilo ohm

2703 = 270 kilo ohm

3303 = 330 kilo ohm

3903 = 390 kilo ohm

4703 = 470 kilo ohm

5603 = 560 kilo ohm

6803 = 680 kilo ohm

8203 = 820 kilo ohm

9103 = 910 kilo ohm

1004 = 1 mega ohm

1204 = 1M2 or 1.2 mega ohm

1504 = 1.5 mega ohm

1804 = 1.8 mega ohm

2204 = 2.2 mega ohm

2704 = 2.7 mega ohm

3304 = 3.3 mega ohm

3904 = 3.9 mega ohm

4704 = 4.7 mega ohm

5604= 5.6 mega ohm

6804 = 6.8 mega ohm

8204 = 8.2 mega ohm

9104 = 9.1 mega ohm

1005 = 10M0 or 10 mega ohm

& so on

isinali ko narin ito para mas madaling ma-identify at ma-aware ang iba

SMD Capacitor & Testing

SMD Capacitor

How to Check Capacitors?

In most cases, a capacitor fails due to the deterioration of the dielectric material between its plate.Defective capacitors can have an internal shorted terminals, excessive leakage and degradation of capacitance meter. For an electrolytic capacitor (capacitors with polarity), short the terminal capacitor to discharge it prior to testing.

To test a capacitor, set the multimeter to Rx10 or Rx1K scale. Connect the tester negative probe to the capacitor positive terminal and the positive probe to the negative terminal.

A good indication for electrolytic capacitor shows the meter needle deflecting towards zero and moves back again to infinite resistance position.
For ceramic, Mylar and other capacitor with a capacitance with less than 1.0 uF, the meter will not deflect at all.

A defective indication for an electrolytic capacitor shows that the meter will rest on zero and remain stationary at a point which is an indication that the capacitor is shorted.


ALL THANKS GO TO gsmkasargod BECAUSE HE SPENT MUCH TIME TO COMPOS THIS INFO.