屏蔽罩卡座 使用设计参考

1. Big size Shield Can which is cover whole PCB had better separate 2 piece can.Distance between shield can pcb layout parallel =0.3mm

When you artwork two shield can in parallel, distance consider 0.3mm 0.9mm

0.9mm Shield can clip artwork recommend

pcb

layout

pcb

layout

0.3mm

0.3mm

2. When you artwork clip at near memory chip

1) part of sealing "resin" consider 0.4mm space

2) part of no sealing resin consider 0.15~0.2mm space

* Sealing Resin , they call "underfill"

for protecting memory on drop test

3. Position of clip

case 1)artwork 4 clip at center is no good

when you insert shield can into clip by manual

and also weak on drop test

case 2)artwork 4 clip at edge is good

when you insert shield can into clip by manual

and also stronger than case 1) on drop test

30 * 17 size

No good

case 3)artwork 4~6 clip

17 * 15 size

Good

Good

case 4)artwork 6~10 clip especially in RF part

more clip is better effect for EMI shielding

Caution)When you use clip especially in RF part for EMI shielding

you'd better cut 0.25mm can which is part of clip and can contacted

Good

24 * 22 size

case 5)With screw

When you artwork clip at whole pcb

you can use clip and screw at the same time

screw hole

35 *20 size

case 6)For example

7) About can

As you can see, you can use efficiently pcb space in base band part.

8) pcb pattern

SPEC :PTC0703B PTC0704