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Surface-mount capacitor. A MOSFET transistor, 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] An electrical component mounted in this manner is ...
It is very common in blogs and websites to incorrectly name a specific connector only by the name of the manufacturer. To minimize confusion, it is best to describe a connector using: the manufacturer's name, exact connector series, and optionally the pitch, such as "JST-XH" or "JST-XH-2.50mm" or "2.50mm JST XH-series" or other variations.
Plastic leaded chip carrier (PLCC): square, J-lead, pin spacing 1.27 mm. Quad flat package (QFP): various sizes, with pins on all four sides. Low-profile quad flat-package (LQFP): 1.4 mm high, varying sized and pins on all four sides. Plastic quad flat-pack (PQFP), a square with pins on all four sides, 44 or more pins.
The female U.FL connectors are generally not sold separately, but rather as part of a pigtail with a high-quality 1.32 mm doubly shielded cable, which allows for a low-loss connection, insulated with fluorinated resin. The male connectors are surface-mounted (SMT) and soldered directly to the printed circuit board (PCB).
The specification defines a 156-pin surface mount connector for the PCI Express signals. The new connector occupies the same board location as the legacy PC/104 ISA connector. In addition to PCI Express, the specifications also defines pins on the connector for additional modern computer buses, such as USB, SATA, and LPC.
SMEMA is an acronym for the Surface Mount Equipment Manufacturers Association. In 1999 they merged with the IPC to form the IPC SMEMA Council. [1] One standard they have is for the wiring of communications between Surface mount technology producing machinery such as a Stencil Printer or a Pick and Place Machine on an Electronics production line.
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