1. Bluetooth earphone(flexible board with side-switch)

2. P/N:SG-FPC-GF0042

3. Base material analysis: considering finished product's flexility use thin material(18/25um) considering costs use electro deposited copper foil

4. Flexible board thickness:0.2mm

5. Stiffener thickness:0.15-0.3mm(PI stiffener)

6. Lay up analysis instruction

7. PI film+polyimide+base material(copper foil+polyimide+PI film+polyimide+copper foil)+polyimide+PI film

8. Structure composition analysis
1. The gold-finger solder spot connect the flexible key-press board to the Blue teeth earphone main board, flash gold surface finished.
2. The flexible board which above gold finger must complete 90twist, open window and disconnection in order to increase flexibility.
3. The cirque pad encapsulation with immersion gold surface finished, covered with metal dome

9. Outline process punching die

10. Surface finished immersion gold

11. Design difficulty choose material, dimension outline.

12. Process difficulty the finished outline dimension is minuteness difficult to test, much more reject because of contra position warp.

13. Products function: Bluetooth earphone side-switch

Kindly, mail us for more information.