Electronics Forum | Tue Nov 14 13:39:37 EST 2000 | Mark S
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 anybod
Electronics Forum | Wed May 09 01:23:17 EDT 2001 | GregH
Hi, My Bottomside component pads are 1:1 with my topside land sizes/dimensions. I have difficulties catching solders on my bottomside smd chips (SMB Diodes, 0805 RC Chips). What should the bottomside components for wave soldering be greater than my t
Industry News | 2010-07-22 22:37:02.0
IPC — Association Connecting Electronics Industries® has released the B revision of IPC-7351, Generic Requirements for Surface Mount Design and Land Pattern Standard. The leading industry standard for surface mount land pattern design and layout, IPC-7351B provides designers and printed board fabricators with updated guidance on requirements of land pattern geometries used for the surface attachment of electronic components, as well as surface mount design recommendations for achieving the best possible solder joints.
| https://www.eptac.com/faqs/ask-helena-leo/ask/smt-components-during-reflow-float-off-pads
mass of solder and pulls the leads off the pads, resulting in no heel fillets. The component lead land areas need to be longer to accept this movement of the component on the large thermal pad
