Electronics Forum | Wed Jul 19 17:58:45 EDT 2000 | Darby
Moving Heavy Machinery, We will be reconfiguring four smd lines after some building alterations are completed. What are the latest tricks/tools peolple are using for lining up their production lines. Lumps of 4" x 2" and trolley jacks work fine for t
Electronics Forum | Wed Jul 19 17:34:25 EDT 2000 | Deon Nungaray
Craig, I'd be really hesitant in pursuing this method for a TQFP. Remember, most SMD's are rated for a maximum rising slope of around 4C/Sec. Immersing a fragile TQFP in a hot wave of molten solder will probably exceed this ramp up rate. Besides thi
Electronics Forum | Tue Jul 18 11:50:26 EDT 2000 | Jeff Sanchez
Hey all, My brother is a tech at TI. He is running tests on bump dies. The question is if he heats up a die (actual waffer) with out disrupting the solder can he still use the solder. Will the solder lose its integrity? Keep in mind that these
Electronics Forum | Tue Jul 18 03:49:43 EDT 2000 | Chris May
50% of cost, bin it. If viable, spend no more than that time to fix. Then concess or use as is. 3) Components are more tricky. Can they be returned to supplier if deemed to be faulty? (proof?). Is/was there an in-house handling problem ? Have design
Electronics Forum | Mon Jul 17 20:20:53 EDT 2000 | Dave F
There is a wide range of price points and configurations for such equipment. RFA (Read the Fine Archives) and contact the suppliers (supplier lists are in SMTnet and "SMT" & "Circuits Assembly" etc magazines) and get back to us with specific question
Electronics Forum | Mon Jul 17 07:45:31 EDT 2000 | Alex Wong
I think you could look at the phenomena in two dimensions. Many of the sub-contractors in Asia are focus on low price-less demanding products. They hire operators to visually inspect the boards and sometime there is no inspection at all. On one ha
Electronics Forum | Wed Jul 12 05:04:01 EDT 2000 | JohnW
Hi Guy's.... Was thinkng about i more this moning..in the shower actually...sometimes think I do my best work there!. So far I'm looking at stuff like integrating the DFM study to show thing's that are going to present production / process issues e
Electronics Forum | Tue Jul 11 12:52:16 EDT 2000 | JohnW
Hi Guy's.. Been a long time since I've been on the forum so let's start by saying..dave..great recipe!!!.. Anyway's why am I on for...ha yes board deflection Wave soldering is a fun past time at best, it's made even more fun when your board deflec
Electronics Forum | Wed Jul 12 21:32:59 EDT 2000 | Dave F
John: Several thoughts: 1 What on your wave machine are these bowed boards catching on? It has to be something on either wave. Are you getting hung-up on the chimney? That doesn't seem correct!!! 2 Why do you want to measure the defection of y
Electronics Forum | Fri Jul 14 11:34:37 EDT 2000 | Mike F
John, The first thing to check is how tight the boards are being held in the conveyor (assuming you are using a finger conveyor). They should be a little loose at the input end so there is some room to expand. If the boards are held too tightly, when
