what is the difference between through hole and surface mount soldering?
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Through-hole mounting is the process by which component leads are placed into drilled holes on a bare PCB. ... Whereas SMT components are secured only by solder on the surface of the board, through-hole component leads run through the board, allowing the components to withstand more environmental stress.
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A printed circuit board, or PCB, is used to mechanically support and electrically connect electronic components using conductive pathways, tracks or signal traces etched from copper sheets laminated onto a non-conductive substrate.
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['Single Sided PCBs. Single sided PCBs are the basic type of circuit boards, which contain only one layer of substrate or base material. ... ', 'Double Sided PCBs. ... ', 'Multi-layer PCBs. ... ', 'Rigid PCBs. ... ', 'Flexible PCBs. ... ', 'Rigid-Flex-PCBs. ... ', 'High-Frequency PCBs. ... ', 'Aluminum backed PCBs.']
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The main difference between extruded and drawn aluminum is the way the aluminum is shaped by the die. While extruded aluminum is pushed through a die to obtain its desired shape, drawn aluminum is pushed into a mold. The aluminum is stretched out into the mold, undergoing what is called plastic deformation.
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NMOS is faster than PMOS as mobility of carriers (electrons) in NMOS greater than that of holes in PMOS. As conductivity is proportional to mobility, NMOS offers less RDS (on) and gate capacitance than PMOS for same die area.
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The Plastic Leaded Chip Carrier, PLCC is a form of SMD integrated circuit package that can be used to enable ICs to be mounted on a printed circuit board either directly soldered to the board or within a socket.
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The big difference is thickness: zinc plating is normally 0.2 mils thick. ... The galvanized product will develop a white protective coating (zinc oxide) that adds to its protective properties. Zinc plating has found wide acceptance as a surface finish for consumer, industrial, and commercial products.
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Generally, machine screws are inserted into already-threaded, or tapped, holes. Meanwhile, sheet metal screws are used to attach metal to metal; they have sharp threads that allow them to cut and thread a hole as they're driven in.
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['Smooth.', 'Bright.', 'Shiny.', 'Clean.', 'Concave solder fillet.', 'Good wetting.', 'The end of the wire or lead is covered with solder.']
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The solder metal is of a lower melting temperature than the two pieces it's fusing. ... Hard solder melts at a high temperature, medium melts at a lower temperature, easy melts at an even lower temperature. Multiple solder joints in a piece of jewelry require multiple types of solder.
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What is Flux and What is the Difference Between Flux and Solder? While solder is used to assemble components onto your circuit board, the flux is used prior to assembly to prepare and help your board through the soldering process.
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In a NMOS, carriers are electrons, while in a PMOS, carriers are holes. ... NMOS are considered to be faster than PMOS, since the carriers in NMOS, which are electrons, travel twice as fast as holes, which are the carriers in PMOS. But PMOS devices are more immune to noise than NMOS devices.
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["Soldering Iron. You can't do much soldering without a soldering iron. ... ", 'Wire Cutter. The wire cutter is a very handy little soldering tool. ... ', 'Soldering Tools For Desoldering. ... ', 'Tweezers. ... ', 'USB Microscope. ... ', 'Wet Sponge. ... ', 'Soldering Stand. ... ', 'Safety Glasses.']
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Silver solder usually refers to a stronger solder used for mechanical joins (compared to lead solder which is soft and relatively weak). However, silver solder has a higher melting temperature, which means the parts have to be heated to a higher temperature to make it work.
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The slip ring motor has brushes for transferring the power whereas the squirrel cage motor is brushless. The copper loss in the phase wound motor is high as compared to squirrel cage motor. The efficiency of the slip ring motor is low whereas the squirrel cage motor has high efficiency.
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Solder Mask Over Bare Copper (SMOBC) is a method of a printed circuit board fabrication which results in final metallization under the solder mask being copper with no protective metal, The non coated areas are coated by solder resist, exposing only the component terminal areas, this eliminates tin lead under the ...
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To my knowledge the difference is down to the material used The surface-hardening enables impact sockets to absorb sudden torque changes (aka "impact") better. With high enough impact, a regular socket may warp out of shape because the steel used there is softer.