我最近想抄一个公板,关于2.4G频率的,资料给了PCB描述,如下
PCB DESCRIPTION:4 LAYER PCB 1.6 MM
Copper 1 35 um
Dielectric 1-2 0.175 mm (e.g. 1x Prepreg 7628 AT05 47% Resin)
Copper 2 18 um
Dielectric 2-3 1.14 mm (6x 7628M 43% Resin)
Copper 3 18 um
Dielectric 3-4 0.175 mm (e.g. 1x Prepreg 7628 AT05 47% Resin)
Copper 4 35 um
DE104iML or equivalent substrate (Resin contents around 45%, which gives [email=Er=4.42@2.4GHz]Er=4.42@2.4GHz[/email], TanD=0.016)
Dimensions in mil (0.001 inch)
DOUBLE SIDE SOLDER MASK,
DOUBLE SIDE SILKSCREEN,
8 MIL MIN TRACE WIDTH AND 5 MIL MIN ISOLATION.
有以下问题:1、如“Copper 1 35 um”,是不是 第一层的铜 35um厚的意思?
2、“Dielectric 2-3 1.14 mm (6x 7628M 43% Resin)”为什么是6乘呢?
3、 DE104iML是什么材料?
4、“DOUBLE SIDE SOLDER MASK,
DOUBLE SIDE SILKSCREEN,”是不是双面绝缘覆盖,双面丝网印刷又是什么意思?
谢谢! |