Tape & Reel is a type of metal dome packing used for high speed pick & place machine. Each metal dome is sealed in a socket on a continued tape and packed on a reel, so it can be picked and place like normal components such as resistor, capitor, on SMT machine. Metal dome packed in this way named as "Tape & Reel Metal Dome"
The same as metal dome in tube use this tape & reel dome can accelerate the assembly speed, increase the alignment of dome on designed position. Further more, as this metal dome packing will be used in fully auto pick & place machine, so assembly speed is much faster than dome in tube. Like normal components, you can put 20,000-100,000 domes per hour, various upon differenct SMT machine. People can use the mininum time to get a maximum, to save a lot of money.
Currently this packing avaialbe in market is for only Four-leg metal dome, because this shape is convenient to put into the reel in a correct direction, and to get a good alignment.
Please note that: It is just a convenient packing for SMT machine, normal metal dome is not intended for soldering at any time!