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IR3552 Datasheet(PDF) 19 Page - International Rectifier |
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IR3552 Datasheet(HTML) 19 Page - International Rectifier |
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19 / 23 page  IR3552 40A Integrated PowIRstage ® www.irf.com | © 2014 International Rectifier February 19, 2014 | FINAL 19 SOLDER RESIST • The solder resist should be pulled away from the metal lead lands by a minimum of 0.06mm. The solder resist miss-alignment is a maximum of 0.05mm and it is recommended that the low power signal lead lands are all Non Solder Mask Defined (NSMD). Therefore pulling the S/R 0.06mm will always ensures NSMD pads. • The minimum solder resist width is 0.13mm typical. • 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. • The power land pads VIN, PGND, and SW should be Solder Mask Defined (SMD). • Ensure that the solder resist in-between the lead lands and the pad land is ≥ 0.15mm due to the high aspect ratio of the solder resist strip separating the lead lands from the pad land. Figure 33: IR3552 Solder Resist |
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