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IPC-7093A BTC: QFN Solder Mask Defined Thermal Pad - PCB Libraries Forum Forum Home > Libraries > Footprints / Land Patterns New Posts FAQ Search Events Register
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; We have found that when the center pad is completely surrounded by solder mask voiding in the solder joint increases and the ability to clean flux residues out from under these parts is difficult if not impossible.
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/son-qfn-calculations_topic889_post3258.html
for high-reliability hardware. For instance, we have found several vendors that recommend a solder mask defined center pad. We have found that when the center pad is completely surrounded by solder mask voiding in the solder joint increases and the ability to clean flux residues out from under these parts is difficult if not impossible
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/topic889&OB=DESC.html
for high-reliability hardware. For instance, we have found several vendors that recommend a solder mask defined center pad. We have found that when the center pad is completely surrounded by solder mask voiding in the solder joint increases and the ability to clean flux residues out from under these parts is difficult if not impossible
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic889&OB=ASC.html
for high-reliability hardware. For instance, we have found several vendors that recommend a solder mask defined center pad. We have found that when the center pad is completely surrounded by solder mask voiding in the solder joint increases and the ability to clean flux residues out from under these parts is difficult if not impossible
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/qfn-thermal-via-pitch_topic2914.html
: QFN Solder Mask Defined Thermal Pad - PCB Libraries Forum Stay connected - follow us! Twitter - LinkedIn jnbrown Members Profile Send Private Message Find Members Posts Add to Buddy List Active User Joined: 13 Jan 2020 Status: Offline Points
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/qfn-thermal-via-pitch_topic2914_post11617.html
. BTW, I have discussed with them in the past about plugging the vias and they told me that they can assemble it either way but that they get a better solder joint with the vias open
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/qfn-thermal-via-pitch_topic2914_post11613.html
. BTW, I have discussed with them in the past about plugging the vias and they told me that they can assemble it either way but that they get a better solder joint with the vias open
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/qfn-thermal-via-pitch_topic2914.html
: QFN Solder Mask Defined Thermal Pad - PCB Libraries Forum Stay connected - follow us! Twitter - LinkedIn jnbrown Members Profile Send Private Message Find Members Posts Add to Buddy List Active User Joined: 13 Jan 2020 Status: Offline Points
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