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File:Uncased film capacitor schoopage.jpg

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English: Visible schoopage on a Siemens (later Epcos/TDK) MKT/MKH B 32 560 stacked film capacitor (250 V, 10 nF)
From the Siemens 1978 data book: "Mechanical protection by small insulating plates [the green-ish plastic film]. When mounting, attention must be given to the surface leakage paths and air paths to adjacent live parts. The insulating strength of the sectional areas to live parts corresponds to 1.5 times the rated dc voltage of a capacitor; it amounts, however, to at least 300 Vdc." The 1978 edition already notes the renaming from MKH to MKT. From a later data book: "Capacitors with 7,5 mm lead spacing are only suitable for use with single-clad printed circuit boards." - that's because, as we see here, there is no insulator on the top/bottom edge, so even slight mechanical damage due to e.g. debris to the exposed film stack could cause shorts between one electrode and a trace running under the capacitor.
Date
Source Own work
Author Phiarc

5:1, f/3, 9 µm steps, 640 images (~6 mm depth). Method B struggled a lot to generate a usable depth map on the schoopage itself with unreasonably wide smudges, so this is Method C with smoothing factor 2. Method C tends to give a low-contrast, bloomy image, which was offset with a stronger-than-usual S-curve to compress tones and larger-than-usual radius USM.

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21 March 2023

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current15:27, 21 March 2023Thumbnail for version as of 15:27, 21 March 20236,775 × 5,092 (7.48 MB)PhiarcUploaded own work with UploadWizard

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