Feeder tape size

Because most placement machine mfgs' feeders vary in width sizes its best to get the reference from them. Like how many 8mm slots does their 16mm consume, and so forth. Std. Sizes I've seen are: 8mm, 12mm, 16mm, 24mm, 32mm, 44mm, 56mm, 72mm, 88mm, 104mm, 120mm & 152mm.

Here's an example from one mfg:

Number of Feeder Slots Used (Total Available = 64) 8mm & 12 mm 1 1 slot Tape Feeders 16mm, 24 mm, 32mm 1 2 slots 44 mm 1 3 slots 56mm 1 4 slots 72mm 2 5 slots 88mm 2 6 slots 104mm 2 6 slots 120mm 2 7 slots

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We are a manufacturer of placement machines and I believe that you asked if there was a reference that can be used to determine the tape sizes for most SMD packages. We review the catalogs from Practical Components and Top Line to determine tape sizes for the various SMD's. You might try them.

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chips up to 1411 ( I have not seen a 1411 component yet, but 1210 is a good number ) in 8 mm, IC up to SO8 in 12 mm, IC up to SOL 20 fit in 16mm tape. This is just a basic rule. You may also find SO 20 in 24 mm tape. More important is the reel width, which is the determining factor for the feeder slots, unless the reels are placed on different levels in the machine. Most common feeder spacing ( slots ) are 16 mm for 8 mm tape

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Genny, you may want to look at the brds you will be running and identify the various packages. I do not know what a standard package is. Most chip resistor and capacitors, 0402, 0603, 1206, 1210's are on 8mm feeders, but ic's vary quite a bit. Also remember depending on your capacity, buying ic's on tape and reel require large buys of components (500-5000 per reel). These may need to be fed to the machine on tube or waffle tray feeders (components are available in smaller qtys.). Our pick and place machine has a capacity of 96- 8mm feeders, but when you start using 12, 16, 24mm , tube and waffle feeders this capacity drops considerable. Again I would look at your most complex brd or brds., identify the various packages, then go to component distributors and or manufactures web sites and get some Idea the reel sizes. Then start figuring how many reel feeders, or tube feeders you will need. Dont be afraid to talk to equipment reps. and have them come in and take a look at what you are trying to acomplish.

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This is too painful. I think you should be much more clever [some might say deceitful].

Call your contract house: * Tell them you have a new ISO/IEC Flimeral requirement for process control documentation that has been laid on you by a VEEEERY important customer of yours. [Contractors are suckers for a line like that.] * Finagle an invite to their plant during the next time they run your boards. * Count the number of feeders on their machine. * Get a free lunch. * Go home hyming a little song.

Then the two or three machine suppliers that you're thinking about can tell how many machines you need to purchase.

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i don't know of any "handy dandy" but something I use is tape width minus 4mm for the max component size that can be fit into tape widths of up to 32mm. 32mm and larger have holes on both sides which would then be tape width minus 7mm. I have never used any tapes larger than 52 mm however, so I don't know what they can hold. There is an EIA standard for tape specifications that you may want to look into that may shed more light. Dave F probably knows the number of this standard.

Hope this helps

Russ

Oh, and just for fun (after looking at a previous thread) I work at a C.E.M. and you should just send your boards to us HAHAHA!

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