The regulator is designed to be stable using low equivalent series resistance (ESR) ceramic capacitors at the input, output, and bias pins. Multilayer ceramic capacitors are the industry standard for use with LDOs, but use good judgment. Ceramic capacitors that use X7R-, X5R-, and COG-rated dielectric materials provide relatively good capacitive stability across temperature. However, using Y5V-rated capacitors is discouraged because of large variations in capacitance. Regardless of the ceramic capacitor type selected, ceramic capacitance varies with operating voltage, ac bias, temperature, humidity, and physical stress. Generally, assume that effective capacitance decreases by as much as 50% to 75% from the nominal capacitor value. Confirm the worst-case capacitance with the capacitor manufacturer based on the expected operating conditions.