Item

Process Capability

Typical value

Layers

24

18

Size

≤21.5”× 24.5”

18.5”× 24.5”

Total Thk.

≤3.2mm

2.6mm

DHS

PTH ≥0.25mm

microvia ≥5mil

PTH 0.25mm

microvia 5mil

A/R

PTH ≤14:1

Microvia ≤1:1

PTH 12:1

microvia 0.8:1

L/S

3mil/3mil (min) 

4mil/4mil

GPPO connecting slot tolerance

Edge to edge ±0.125mm

Pad central to edge ±0.125mm

Cavity bottom roughness≤25um

Edge to edge ±0.125mm

Pad central to edge ±0.125mm

Cavity bottom roughness≤25um

Base Material

M6

M6

reliability

Lead Free Reflow 5X

 (260℃peak ) 

Lead Free Reflow 5X

 (260℃peak )  

structure

1+N+1, 2+N+2

2+N+2

Application

Optical module

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