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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 referred to as a surface-mount device ( SMD ).
The magnetic lock should always be installed on the secure side of the door. Most installations are surface mounted. For safety, magnetic lock, cables, and wires should be routed through the door frame or flush mount with wire moulding. Installation is straightforward.
Flatpack was one of the earliest surface-mounted packages. Small-outline integrated circuit (SOIC): dual-in-line, 8 or more pins, gull-wing lead form, pin spacing 1.27 mm. Small-outline package, J-leaded (SOJ): The same as SOIC except J-leaded. [80] Thin small-outline package (TSOP): thinner than SOIC with smaller pin spacing of 0.5 mm.
A thin layer of non-ferromagnetic material is applied to the reed switch contact area to serve as an electrical contact switching (wear) surface and, for normally-open contacts, as a magnetic spacer whose thickness is important in controlling the magnetic field level at which the contact opens (the drop-out).
The collapsible kickstand of some horizontal cases holds the device in a flatter or steeper angle, depending on whether it is horizontally placed on a surface clockwise or counter-clockwise. The flat angle allows tapping without pushing the device over, while the steep angle is intended for watching.
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