IRDC3629 International Rectifier, IRDC3629 Datasheet - Page 20

• Manufacturer Part Number: IRDC3629
• Description: BOARD EVAL SYNC BUCK CONTROLLER
• Manufacturer: International Rectifier

11/29/2007
Solder Resist
solder resist mis-alignment is a maximum of 0.05mm and it is recommended that the lead lands are all
Non Solder Mask Defined (NSMD). Therefore pulling the S/R 0.06mm will always ensure NSMD pads.
At the inside corner of the solder resist where the lead land groups meet, it is recommended to provide
a fillet so a solder resist width of ≥ 0.17mm remains.
resist off the copper of 0.06mm to accommodate solder resist mis-alignment.
aspect ratio of the solder resist strip separating the lead lands from the pad land.
Ensure that the solder resist in-between the lead lands and the pad land is ≥ 0.15mm due to the high
Each via in the land pad should be tented or plugged from bottom boardside with solder resist.
The solder resist should be pulled away from the metal lead lands by a minimum of 0.06mm. The
The minimum solder resist width is 0.13mm.
The land pad should be Non Solder Mask Defined (NSMD), with a minimum pullback of the solder
IR3629/IR3629A MPbF
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