Electronics Forum: qfp bent leads (Page 6 of 50)

Rad 5 performance: bent lead

Electronics Forum | Mon Jul 08 16:03:06 EDT 2019 | slthomas

My recollection is that there is a carrier clip locator that positions (centers) the clip in front of the CTA. Has the adjustment on that been confirmed as well? (Edited because some of it's coming back to me!): I think there is a diamond shaped pin

Rad 5 performance: bent lead

Electronics Forum | Tue Jul 09 15:40:06 EDT 2019 | assuredtech

That's a great point about air consumption, don't reduce the 1/2 inch air line requirement, meet the CFM air requirement and of course dry shop air. Check the Auto oiler for the CTA is running correctly, 5W 30 NON Detergent oil only. Attached is a pi

Rad 5 performance: bent lead

Electronics Forum | Mon Jul 08 18:45:53 EDT 2019 | assuredtech

Would you happen to have the Jig used to check that the component itself is in spec with UIC's general specifications? 1.) Component in spec. 2.) Correct 2.5mm pusher on the feeder / dispense head. Also set the conditioner guide where the comp enter

Hitachy QFP 256 leads problems

Electronics Forum | Mon Mar 19 03:59:25 EDT 2007 | dougie001

is the component placed off all the time or does it vary? if the placement offset is consistent then there is every chance that the machine requires calibration (providing your program is correct) If it varies then there could be lots of things caus

Hitachy QFP 256 leads problems

Electronics Forum | Mon Mar 19 11:20:10 EDT 2007 | realchunks

When you say "No wetting" you mean the paste looks the same as it did going in but dried out? Or is it that you are not getting toe fillets?

Hitachy QFP 256 leads problems

Electronics Forum | Tue Mar 20 17:53:44 EDT 2007 | diesel_1t

is not getting toe fillet, you can se like a "paste dome" on the pad so the paste is not flowing to the pin...

Hitachy QFP 256 leads problems

Electronics Forum | Tue Mar 20 19:18:53 EDT 2007 | diesel_1t

Hi to all, thank you very much for your feedback. The part is rotated before inspection; and also tend to be shifted to the same direction of pre-rotation so i think is not correcting misalignment or maybe some settings on shape data are not correc

Hitachy QFP 256 leads problems

Electronics Forum | Sun Mar 18 23:01:11 EDT 2007 | diesel_1t

Hi there, I want help on the following issue. Where I work, we place a component QFP 256 terminals (20 mil pitch)from hitachi (renesas), we use a MPM UP-3000 screen printer, IP-III placement machine and Vitronics 8 zones reflow Oven. lead plating

Re: too bent or not too bent...

Electronics Forum | Fri Dec 10 09:32:04 EST 1999 | Dave F

Joe: It might be tough to generalize about the number of times you can reform a lead before it is weakened beyond the point of reuse, because of different lead materials, thicknesses, amount of bending etc. It might be that "ugliness" is the answer

too bent or not too bent...

Electronics Forum | Fri Dec 10 08:51:58 EST 1999 | Joe

Hi, Can anyone tell me when are bent leads too bent to be straightened again. I'm thinking about the strength of the lead where it meets the housing will be weakened the further you bend it. thanks.


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