Eia Capacitor Tolerance Table

For example if you see047k the value is047 uf 10. 770f all capacitors will change in capacitance value if their temperature departs from room temperature as normally will occur.

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Then by just using numbers and letters as codes.

Eia capacitor tolerance table. Table 5 shows the eia tolerance codes for ceramic capacitors. Looking at these charts you see an np0 capacitor with eia code c0g will have 0 drift with a tolerance of 30 ppmk while an n1500 with the code p3k will have 1500 ppmk drift with a maximum tolerance of 250 ppm0c. Once again dont expect to find all possible combinations of values dielectrics and tolerances.

Ceramic capacitors all ceramic capacitors are specified and guaranteed with regards to their capacitance value and tolerance at 250c room temperature. 47pf 1000 3 zeros 47000 pf 47nf or 0047uf the j indicates a tolerance of 5. This mark uses three characters to indicate the temperate tolerance and maximum variation within the stated temperature range.

They have been deliberately chosen to represent the nearest standard val ues associated with common wireless fre quency applications. 2a is 100vdc rating according to the eia standard. Ipc 782 tables list tighter tolerances.

This type of capacitor marking is used less these days but may be seen on some older capacitors. The calculated cw1 here represents the tolerance of the termination. Surface mount mounting pad dimensions and considerations ceramic capacitors including 0603 0402 0201.

All impedance data presented in table 1 is referenced to each nominal capacitor value. The standard for tantalum chip capacitors eia 535 specifies a min. A table of eia tolerance markings is shown later in this app note.

For instance an np0 capacitor with eia code c0g will have 0 drift with a tolerance of 30 ppmk while an n1500 with the code p3k will have 1500 ppmk drift with a maximum tolerance of 250 ppm0c. If a capacitor is fex. Marked 2a474j the capacitance is decoded as described above the two first signs is the voltage rating and can be decoded from table 2 here below.

The tighter tolerances mostly apply to small c0g capacitors and the looser tolerances to larger class 2 4 ceramics. Note that the iec and eia capacitor codes are industry capacitor codes and not the same as military capacitor codes. Some capacitors have a tolerance code.

The capacitor on the left is of a ceramic disc type capacitor that has the code 473j printed onto its body. More and more capacitor manufacturers are adopting the eia electronic industries association marking system for temperature tolerance. The capacitor val ues listed in table 1 are eia standard values and tolerances.

The code used is actually the same as that used with resistors as it utilises the eia scheme. Then the 4 1 st digit the 7 2 nd digit the 3 is the multiplier in pico farads pf and the letter j is the tolerance and this translates to.

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