Electronics Forum: eta on semi (Page 1 of 2)

Re: Adhesive on hot PCBs

Electronics Forum | Wed Dec 08 10:25:00 EST 1999 | John Thorup

Hi Ken Given the small mass of the dot I'm guessing that the adhesive is being flash cured by the heat of the board and the resulting semi-solid is unable to release from the nozzle like a liquid thereby causing your strings. Placing components on c

Detecting lifted leads on QFPs

Electronics Forum | Fri May 28 07:37:52 EDT 1999 | Steve Cheung

Yes l know this problem keeps cropping up on the forum but l've missed some of the follow-ups. Our problem is that the lifting only occurs on 3% of production so actually detecting an improvement is difficult. We're actually having to inspect 144 p

Solder balls on Cleaned process

Electronics Forum | Wed Oct 17 17:43:27 EDT 2001 | davef

2) Open time: A 15-minute queue between paste, place, and reflow SB fine, assuming humidity is not too great. 3) Wash temperature: Yes. A wash temperature of 130-140�F SB fine. 4) Reflowed board was left too long prior wash: Are you washing: * After

Solder bridges on TQFP 100 part

Electronics Forum | Wed Aug 07 01:41:27 EDT 2019 | orbitcoms

Hi I am having trouble getting solder bridges on TQFP-100 (0.5mm pitch) components. The boards are pasted on semi-auto printer using laser-cut 0.12mm stencil and SN63 NC257-2 T4 paste. The components are placed using Samsung CP40LV and tghen reflow

Solder bridges on TQFP 100 part

Electronics Forum | Thu Aug 08 13:05:45 EDT 2019 | horchak

What is your pad width? What is lead width? Is the part gang masked, or has masking between the pads? Pads plated or HASL, if HASL how thick? What is board thickness and size? Does it need to be fixtured for support thru out the process. Semi auto sc

Re: Detecting lifted leads on QFPs

Electronics Forum | Sun May 30 08:50:42 EDT 1999 | Dave F

| Yes l know this problem keeps cropping up on the forum but l've missed some of the follow-ups. | | Our problem is that the lifting only occurs on 3% of production so actually detecting an improvement is difficult. We're actually having to inspect

Re: Detecting lifted leads on QFPs

Electronics Forum | Fri May 28 16:30:39 EDT 1999 | JohnW

| Yes l know this problem keeps cropping up on the forum but l've missed some of the follow-ups. | | Our problem is that the lifting only occurs on 3% of production so actually detecting an improvement is difficult. We're actually having to inspect

Advise on Semi Auto Cut and Clinch machines

Electronics Forum | Wed Dec 17 11:33:32 EST 2003 | paul_bmc

I am looking for different opinions on semi auto cut and clinch machines. I am currently using Multitroniks Ragen machines and looking to replace them ASAP. I am looking for suggestions of different machines.

Advise on Semi Auto Cut and Clinch machines

Electronics Forum | Wed Dec 17 20:54:25 EST 2003 | dougt

The 400 is probably the benchmark for semi auto through hole, I would recomend this machine regardless of how Contact Systems is doing. There are thousands of these machines out there and there are quite a few groups out there that provide service f

Advise on Semi Auto Cut and Clinch machines

Electronics Forum | Wed Dec 17 15:05:11 EST 2003 | dougt

Contact Systems is doing OK, I wouldn't worry about parts or service. I would call them if your looking at used, they probably offer a warrenty.

  1 2 Next

eta on semi searches for Companies, Equipment, Machines, Suppliers & Information

Count On Tools, Inc.
Count On Tools, Inc.

COT specializes in high quality SMT nozzles and consumables for pick and place machines. We provide special engineering design service of custom nozzles for those unique and odd components.

Manufacturer

2481 Hilton Drive
Gainesville, GA USA

Phone: (770) 538-0411

Best SMT Reflow Oven

World's Best Reflow Oven Customizable for Unique Applications
consignment program

High Throughput Reflow Oven
Void Free Reflow Soldering

Best Reflow Oven


Internet marketing services for manufacturing companies