Recommended DPAK land pattern is too small...???| 14 November, 2000
Hi All -- I'm about to design a DPAK part (case 369A-13, Issue Z)onto a PCB . The part's maximum length as given in the datasheets (On-Semi MAC4DHM) is 0.030" longer than the recommended land pattern as given in that same datasheet.
(1) Has anybody used this land pattern, or had success with it?
(2) Is it OK for the part to overhang the pads? I'm thinking not, but a query to On-Semi confirmed the land pattern is correct.
(I'll keep in mind the advice given to Kantesh Doss with his DPAK reflow 'float' problems that I found in the archives)
Re: Recommended DPAK land pattern is too small...???| 14 November, 2000
Our land patterns are slightly bigger than the part, we've had no problems. There are your own concerns about the part hanging over the pads, this can be ok or not depending on your application and/or how much part is over. I'm sure this is in the J-STD/IPC.