Capacitor capacity unit and capacitance capacity unit conversion method - Database & Sql Blog Articles

SMD aluminum electrolytic capacitor
Tantalum capacitor

The unit of capacitance capacity is “Fara”, which is represented by the letter “F”. Units smaller than F are also MF (Mega) μF, (microfarad), NF (nano method), PF (pico method)

1F=1000Mf=1000000μf=1000000000nf=1000000000000Pf

1μf=1000nf=1000000pF

1nf=1000pf

Since the capacity of the "F" unit of the capacitor is very large, we usually see units of μF, nF, and pF. In the common circuit diagram, μF, PF some omits F to show μ, P actual capacitance labeling method is generally less than 9900P with P indicating greater than 0.01μ (including 0.01) expressed in μ.

Capacitor capacity conversion:

1, N (nano method) representation
1n=1000P
10n=0.01μ
100n=0.1μ
Example: 3n3 means 3300Pf 22N means 0.022μf 470n means 0.47μf

3, direct labeling method:
0.01μ 0.047μ 3300pf 560pf shows that the actual capacity does not have to be converted

4, symbolized:

This kind of symbol is mostly used for patches or small electrolytic capacitors. The reading method is somewhat similar to the number of squares. Pay attention when using it. Its capacity unit is generally μf level.

Representation character

Capacity unit μf

Representation character

Capacity unit μf

0R1

0.1μf

100

10μf

R15

0.15μf

150

15μf

R22

0.22μf

220

22μf

R33

0.33μf

330

33μf

R39

0.39μf

390

39μf

R47

0.47μf

470

47μf

R56

0.56μf

560

56μf

R68

0.68μf

680

68μf

R82

0.82μf

820

82μf

010

1μf

101

100μf

1R5

1.5μf

151

150μf

2R2

2.2μf

221

220μf

3R3

3.3μf

331

330μf

3R9

3.9μf

391

390μf

4R7

4.7μf

471

470μf

5R6

5.6μf

561

560μf

6R8

6.8μf

681

680μf

8R2

8.2μf

821

820μf

5, expressed in terms of the number of powers:
10 10+ no = 10P
101 10+0=100P
102 10+00=1000P
103 10+000=0.01
104 10+0000=0.1
105 10+00000=1μ
The first 2 digits are capacity. The third digit is the power square, the power square unit is P, such as 221 means 22 plus one zero is equal to 220P, 472 means 47 plus two zero is equal to 4700P, 683 means 68 plus three zero equals 0.068μf

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