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CHAPTER 2 PRINTED WIRING BOARD DESIGN


2.1 Lead-type SMDs
2.1.4 Example of mount pad dimension classified by package

(11) SOJ mount pad dimensions

 

Figure 2-13. SOJ Mount Pad Dimensions


Table 2-12. Example of Soldering Parameters( Unit: mm)
1.27 Remark
l1 1.20 Setting of recommended value from EIAJ ED-7406 (old specification)
l2 2.00 Setting of recommended value from EIAJ ED-7406 (old specification)
b2 0.75 Setting of recommended value from EIAJ ED-7406 (old specification)

To 2.1.4(10) QFP (fine pitch), TQFP, LQFP mount pad dimensions (Lp)To 2.2 Ball-type SMDs