Electronics Forum | Sat Jan 10 12:14:26 EST 1998 | eyal dickerman
I'm suprise that you are not evaloating HELLER ovens ,It is the best ,relaible oven in the market for more than 5 years. They are using the same heater/blower technology from the same manufacturer for years... HELLER offers LIFE WARRENTY for the heat
Electronics Forum | Wed Jan 07 22:43:25 EST 1998 | Myles McIntyre
A potential purchaser of our products (switchmode power supplies for telecommunications) has asked what the benefits of SMT are to him. Our marketing people wish to obtain a list of the benefits of SMT to the purchaser of the end product. i.e. they a
Electronics Forum | Tue Jan 13 13:17:00 EST 1998 | Matt Brown
| We use no clean paste and sometimes experience | flux splattering which gives spot on gold fingers. | Need help in analize the cause. thx. Most often, the 'splattering' is caused by an excessive temperature in the oven: this can cause the solder p
Electronics Forum | Wed Jan 07 11:18:43 EST 1998 | Richard
| Can anyone help supply information regarding where I can have a Demo SMT board manufactured with BGA,QFP,Discretes,SOIC,etc. I am looking to prepare these Demo boards with standard defects. Any suggestions out there? Another source in addition to T
Electronics Forum | Sat Jan 03 18:13:58 EST 1998 | David Jacks
Tom: You are right. Pre-heating is just as necessary in rework as it is in intiial production. Zephyrtronics produces an economical convective bottom side pre-heater known as an airbath. This product ramps the substrate and assembly at 2-4 degrees
Electronics Forum | Thu Jan 01 13:04:42 EST 1998 | scott cook
| Has anyone had any experience with thermal shocking | and cracking of SMD capacitors during the rework process? | My company was advised to preheat capacitors to 125 C | at a rate of 2 C/sec before replacing them onto boards. | Would this maybe
Electronics Forum | Mon Dec 29 14:47:36 EST 1997 | justin medernach
| how to determine the optimum solder paste height ? Ray, This is a gross misconception within the industry. There is no optimum solder paste height, per say. The effectiveness of a solder joint should be quantified in volume. Use your process as
Electronics Forum | Thu Feb 19 12:56:29 EST 1998 | Earl Moon
| I'd like someone gives me a tip for elemating of voids | in the mico BGA solder joint and the method of inspection | of them, very exactly. Voids in excess of 20% by each solder ball volume is cause for rejection. Causes are improperly managed proc
Electronics Forum | Wed Jan 14 23:08:19 EST 1998 | Ron Costa
Place your components directly on the PCB without using solder paste,unless your using high temp. solder spheres then you should use paste. If eutectic solder spheres are used try fluxing the BGA area and attach it directly to the board. This will re
Electronics Forum | Fri Feb 27 09:45:04 EST 1998 | Gary
| I am looking for a small Zevatech or Quad machine to support | our product production and small contract placement jobs. | Please email pricing and location of any available equipment! | Thanks, | Michael If you are still looking I have a heavily o