Electronics Forum: registers

QFN PCB Pad no Drain Hole

Electronics Forum | Sun May 19 23:38:57 EDT 2013 | shrikant_borkar

We are EMS. Later revisions and Other models are get Modified. Now we have some remain Stock of Pcbs abd there end also. We have taken trial with Reduction in Apparatuses. But even small amount of solder paste at thermal Pad is causing QFN lift up.

Making a BGA stand up

Electronics Forum | Mon Jan 13 21:52:16 EST 2003 | davef

Haaaaaa!!!! You contractors get all the fun don't ya??? Consider: * Replacing the balls on the corners of the devices with balls composed of a "hard solder", yano something like 90/10. * Shimming to prevent excessive collapse of a heavy BGA during

Re: Heatsinks for surface mount devices

Electronics Forum | Mon May 24 10:17:54 EDT 1999 | john thorup

| Can anyone steer me towards a supplier of heatsinks suitable for use on a PQFP 160. Before you shoot me down in flames, I know that I am not going to get much heat away from the die because of the plastic but the application is such that the board

Re: Heatsinks for surface mount devices - adhesive alternative!

Electronics Forum | Tue May 25 10:56:12 EDT 1999 | John Thorup

| | | Can anyone steer me towards a supplier of heatsinks suitable for use on a PQFP 160. Before you shoot me down in flames, I know that I am not going to get much heat away from the die because of the plastic but the application is such that the bo

Re: Heatsinks for surface mount devices - adhesive alternative!

Electronics Forum | Mon May 24 17:17:21 EDT 1999 | JohnW

| | Can anyone steer me towards a supplier of heatsinks suitable for use on a PQFP 160. Before you shoot me down in flames, I know that I am not going to get much heat away from the die because of the plastic but the application is such that the boar

Lead free profile

Electronics Forum | Thu Jan 27 15:13:26 EST 2005 | jbrower

Hi Tom, Thanks for the compliment. I've been researching and planning for the time that my company would go lead free since late in 1999. I hear you there, how do we know that the component is lead free. Baring a leap of faith with your vendors, I

Re: Classification of moisture sensitive devices

Electronics Forum | Thu Aug 26 10:49:36 EDT 1999 | Wolfgang Busko

| | | Having implemented the process of handling moisture sensitive devices our logistics department tries to classify all parts according to their moisture level. | | | Going through datasheets wasn�t that helpfull, so does anyone know of a source

Re: Tape residue cleaner

Electronics Forum | Fri Apr 07 17:17:55 EDT 2000 | Dave F

Ashok: You should select and use low residue tapes. But ya know, ya go out and research a great tape and if yer not careful, the buyer will second source ya and (surprise) ya got residues again. We have found that Lemme say this about Katon tape

Ceramic PCB's

Electronics Forum | Wed Feb 25 08:34:00 EST 1998 | Earl Moon

CERAMIC CIRCUITRY Starting with hybrid thick film circuits in 1965 at Sperry Flight Systems, I have been involved with ceramics (usually aluminum oxide) as the substrate material. Then, we developed "multilayer" circuitry (replacing "cordwood" module

Re: Ceramic PCB's

Electronics Forum | Wed Feb 25 08:30:44 EST 1998 | Earl Moon

| Happy Holidays All, | I am searching out a vendor (US preferred) who can fabricate a ceramic PCb with etremely fine lines. | Please reply if you are a vendor, or know of one. | Thanks, | Wendy CERAMIC CIRCUITRY Starting with hybrid thick film circ

  1 2 Next

registers, thermal stock searches for Companies, Equipment, Machines, Suppliers & Information

Blackfox IPC Training & Certification

Reflow Soldering 101 Training Course
Global manufacturing solutions provider

Stencil Printing 101 Training Course
Equipment Auction Automotive Electronics Supplier - Closure of Tier-One SMT Dvision: (10) ASM & Universal SMT Lines & Feeders Equipment as-new-as 2019! Dek | Koh Young | Speedline | Vitronics | Viscom

Software programs for SMT placement and AOI Inspection machines from CAD or Gerber.
2024 Eptac IPC Certification Training Schedule

World's Best Reflow Oven Customizable for Unique Applications