ANTENTOP- 01- 2007, # 009

Capacitor Code

Ceramic Capacitor may have 3 or 4 numbers at its body. Last number is multiplier. The number tells how much =zeros= contains multiplied number. Numbers before are value in pF.

Example 1: At a capacitor's body is number 102. It means 10-pF multiply to 100 (last number tells us about 2 =zeros=). So, 1000-pF.

Example 2. At a capacitor's body is number 101. It means 10-pF multiply to 10 (last number tells us about 1 =zero=). So, 100-pF.

Example 3: At a capacitor's body is number 103. It means 10-pF multiply to 1000 (last number tells us about 3 =zeros=). So, 10000-pF.

Capacitor that has value in pF may be marked straight away in pF. A letter =p= shows the value.

Example 4: At a capacitor's body is number 5p6. It means 5.6-pF.

Example 5: At a capacitor's body is number 10p. It means 10-pF.

Sometimes, capacitance is marked in 1000-pF. Letter =n= tells about it.

Example 6: At a capacitor's body is number 2n2. It means 2200-pF.

Example 7: At a capacitor's body is number 10n. It means 10000-pF.

Capacitance may be marked in μF. At the case only numbers with point can be found at the body.

Example 7: At a capacitor's body is number = .1=. It means 0.1- μF.

Example 8: At a capacitor's body is number = 3.3=. It means 3.3- μF.

As usual, after numbers follows a letter. The letter may be located under numbers. The letter tells us about tolerance. Table 1 shows the tolerance code.

Example 9: At a capacitor's body is number 103N. It means 10-pF multiply to 1000 (last number tells us about 3 =zeros=). So, 10000-pF +- 30%.

Example 10: At a capacitor's body is number 2p2B. It means 2.2-pF +- 0.1-pF.

Some capacitors may have mark of Temperature Coefficient which is marked by different color at cap of the capacitor. Table 2 shows the Color Code for a Temperature Coefficient.

Example 11: At a capacitor's body is number 101. Cap is red. It means 100-pF N080.

Some old capacitors may have Letter Code for dielectric material. Table 3 shows the code.

Table 1 Tolerance Code for Capacitor