What is New in IPC-7351C.pdf - 第6页
PC B L ibr ar i es Pr e s ents : Wh at is N ew i n IPC- 7351C I PC -7351 C P r oportiona l P a d St a c ks
PCB Libraries Presents:
What is New in IPC-7351C
IPC-7351C Proportional Pad Stacks
No 3-Tier Library System
PCB Libraries Presents:
What is New in IPC-7351C
IPC-7351C Proportional Pad Stacks
PCB Libraries Presents:
What is New in IPC-7351C
• Most Component Manufacturer’s
Recommended Pad Shape is Rectangle
• IPC-SM-782 and IPC-7351B
Recommended Pad Shape is Oblong
• IPC-7351C – Rounded Rectangle Pad
Land Width =
Shortest Side
Maximum Radius =
10 Mil (0.25 mm)
Corner Radius =
25% Land Width
1 Mil (0.01 mm)
Round-off
Rounded Rectangle Pad Shape