An oil and air separation can includes: a first screen that holds an oil filter assembly proximate a can intake for blow-by gases, and a second screen that holds a second oil filter assembly proximate a can exhaust for blow-by gases, wherein the first screen and the second screen are spaced vertically apart from one another. Also, a method for manufacturing the above-described semiconductor device is described. In the converter of the invention, the means for combining includes, for at least one of the stages, means for dynamically estimating a digital correction signal indicative of an analog error of the corresponding inter-stage gain, and means for controlling the digital weight according to the digital correction signal. The adhesive strength between the cured body and the metal layer is equal to or larger than 4.