The output capacitor of the LM2639 buck regulator circuit is labelled as “22u 10v 1210 Y5V X12”. What does this mean, and who makes it?
“22u 10V” is the capacitance and voltage rating of the capacitor. “1210” is the physical size of the capacitor in millimeters. “Y5V” indicates the capacitor is of the standard Y5V series. For this application, the more expensive X5R series could be used for more consistent performance over temperature. “X12” means 12 capacitors are paralleled together. The vendor of this particular output capacitor is Taiyouden.
