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Surface-mount capacitor A MOSFET, placed upon a British postage stamp for size comparison. Surface-mount technology (SMT), originally called planar mounting, [1] is a method in which the electrical components are mounted directly onto the surface of a printed circuit board (PCB). [2]
For example, a 220 μF 6 V capacitor will have a surface area close to 346 cm 2, or 80% of the size of a sheet of paper (US Letter, 8.5×11 inch paper has area ~413 cm 2), although the total volume of the pellet is only about 0.0016 cm 3.
IEC/EN 60384-20—Fixed metallized polyphenylene sulfide film dielectric surface mount d.c. capacitors; IEC/EN 60384-23—Fixed metallized polyethylene naphthalate film dielectric chip d.c. capacitors; Electrolytic capacitors. IEC/EN 60384-3—Surface mount fixed tantalum electrolytic capacitors with manganese dioxide solid electrolyte
Chip-size package (CSP) developed by National Semiconductor [21] COB: Chip on board: Bare die supplied without a package. It is mounted directly to the PCB using bonding wires and covered with a blob of black Epoxy. [22] Also used for LEDs. In LEDs, transparent epoxy or a silicon caulk-like material that may contain a phosphor is poured into a ...
These ceramic chip capacitors were the driving force behind the conversion of electronic devices from through-hole mounting to surface-mount technology in the 1980s. Polarized electrolytic capacitors could be replaced by non-polarized ceramic capacitors, simplifying the mounting.
Polymer Ta-e-caps are available in rectangular surface-mounted device ... Polymer SMD Tantalum Electrolytic Capacitors are available up to a size of 7.3x4.3x4.3 mm ...
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