Electronics Forum | Thu May 04 13:16:07 EDT 2023 | tommy_magyar
If I would need to investigate this claim, I would ask the following questions: - was traceability used when this product was manufactured? - was testing mandatory when this specific product was built? - is the test covering the QFP we are talking ab
Electronics Forum | Fri May 05 07:26:45 EDT 2023 | tommy_magyar
All you can do is to revise the testing procedures and SMT checks (pick and place vision and AOI checks) with the same fault generated in-house. This is all you can do from my point of view.
Electronics Forum | Sat Jul 22 13:20:35 EDT 2023 | shrikant_borkar
Dear Abhishek, I too got the opportunity to investigate this defect Lift lead for SOT. Lead lift in IC, and SOT can occur due to various reasons. Here are some possible reasons for lead lift and ways to avoid them: During the assembly process, mecha
Electronics Forum | Mon Jan 30 16:30:55 EST 2006 | GS
Hi James, it could be the problem is due to residual of cleaner media entrapped under low gap of QFP 208 and 0,5 mm lead pitch. I remember in the past we had random problems of failure at test after board wash off process (DI Water wash). We met
Electronics Forum | Tue Apr 13 04:54:53 EDT 1999 | Charles Stringer
| | DOES ANY ONE KNOW HOW I CAN STRAIGHTEN | | BENT PINS ON A FINE PITCH QFP WITH OUT DAMAGING | | THE CHIP. AT $300 A CHIP I CAN'T SCRAP THEM. | | | I use tweezers and picks. I place the component down on it's backside (legs up) and manually twe
Electronics Forum | Tue Apr 13 12:36:57 EDT 1999 | Scott McKee
| | | DOES ANY ONE KNOW HOW I CAN STRAIGHTEN | | | BENT PINS ON A FINE PITCH QFP WITH OUT DAMAGING | | | THE CHIP. AT $300 A CHIP I CAN'T SCRAP THEM. | | | | | I use tweezers and picks. I place the component down on it's backside (legs up) and ma
Electronics Forum | Mon Dec 08 18:52:47 EST 2003 | Craig M
Stability of process is what your measuring so lets not assume a stable process(if your process was perfect you would have no defects). With no test a medium complexity board will be around 68.7% (according to Consulogic). I dont have many other sour
Electronics Forum | Fri Nov 02 11:23:52 EST 2001 | dougt
Here's my 2 cents....... I worked for a small company that manufactures pick and place machines and had the task of testing/troubleshooting and the dreaded calibration. These machines used vision for part orentation and have what I considered aweso
Electronics Forum | Sun Dec 10 11:56:05 EST 2000 | Bob Willis
The following may be of interest to you. INTRODUCTION TO X-RAY INSPECTION All text Copyright Bob Willis, EPS INTRODUCTION TO X-RAY INSPECTION The use of X-ray inspection is becoming very popular due to the increased use of Ball Grid Array (BGA)
Electronics Forum | Sun Dec 10 11:55:16 EST 2000 | Bob Willis
The following may be of interest to you. INTRODUCTION TO X-RAY INSPECTION All text Copyright Bob Willis, EPS INTRODUCTION TO X-RAY INSPECTION The use of X-ray inspection is becoming very popular due to the increased use of Ball Grid Array (BGA)
