Electronics Forum | Fri May 07 16:28:07 EDT 1999 | Andrew Wulff
On 1.27mm (0.050 inches) Standard Ball Grid Array's. The ball size diameter starts at approximately 0.025 inches. If the ball size decreases to 0.012 inches (due to the solder flowing down a via) is the solder connection reliable? This is a known L
Electronics Forum | Fri May 07 17:02:01 EDT 1999 | Earl Moon
| On 1.27mm (0.050 inches) Standard Ball Grid Array's. | The ball size diameter starts at approximately 0.025 inches. | | If the ball size decreases to 0.012 inches (due to the solder flowing down a via) is the solder connection reliable? | | This
Electronics Forum | Thu May 13 18:36:55 EDT 1999 | Andrew Wulff
| | On 1.27mm (0.050 inches) Standard Ball Grid Array's. | | The ball size diameter starts at approximately 0.025 inches. | | | | If the ball size decreases to 0.012 inches (due to the solder flowing down a via) is the solder connection reliable? |
Electronics Forum | Mon Jul 25 19:12:17 EDT 2022 | proceng1
I generally do not design an array larger than 10" x 12". Other than just thermal mass, the one issue to watch with extra length is if the array is so large that it spans multiple heat zones at the same time. We have panels that are up to 48" l
Electronics Forum | Tue Apr 07 19:36:41 EDT 1998 | LEON MARTIN
WE ARE TRING TO LOCATE A 9 SEGMENT, INFRARED EMITTER ARRAY & 9 SEGMENT INFRARED DETECTOR ARRAY. THEY ARE USED IN A COIN READER TO MEASURE THE DIAMETER OF THE COIN. THE SIZE OF THE ARRAYS ARE, 1.6 BY .297 INCHES. ANY HELP WILL BE APPRECIATED.
Electronics Forum | Tue Jun 05 12:12:19 EDT 2007 | SWAG
We do not recommend array sizes. PCB houses take a single board and turn it into a step/repeat that is best fit for their process = cheaper boards I suppose. We then approve this array and build programs and tooling to match. On occasion, we recei
Electronics Forum | Mon Jul 14 14:40:39 EDT 2014 | cbeneat
We buy padded bags from ULINE. They work well and are self sealing also, we reuse so we don't seal them. They come in a wide array of sizes as well.
Electronics Forum | Mon Feb 25 21:09:48 EST 2002 | davef
You are correct about a TCE [CTE] mismatch issues in ceramic packages. The coefficient of thermal expansion [ppm/�C] of major ceramic package elements are: * Silicon - 3 * Standard 92% alumina ceramic � 6.5 * FR4 board � 18-20 Several points are: *
Electronics Forum | Tue Apr 27 12:32:53 EDT 1999 | Frank Hinojos
What is the current spec for sizing PCB pads for a land grid array? How about for a ball grid array? Are there industry spec's I can reference? Thanks, Frank
Electronics Forum | Tue Jun 05 15:10:24 EDT 2007 | jax
Am I missing something? Get the Laminate Sizes from your suppliers, and make your own Array Files. You might need to include tooling holes for the Fabrication house but they will surely supply you with the information that they need. This way you
