pcb层压结构参考
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多层板常规结构搭配
为节约成本,方便操作,规范叠层,特对多层板结构搭配作如下建议:(客户对叠层有要求除外)1)叠板结构注意
2)结构搭配参考前提:
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一〉四层板(其中2、3层全部是GND层,残铜率为60%,总填胶量为:0.0254mm)
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二〉六层板(L2、5为铜面残铜率为60%,L3、4为线路面,残铜率为35% ,总填胶量:0.069mm)
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三、八层板(2、4、6层为GND层,残铜率为60%,L3、5、7层为线路层,残铜率为35%,填胶量:0.104mm)
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四、十层板(L2、5、6、9层为GND层,残铜率60%,L3、4、7、8,残铜率为35%,填胶量:0.128mm)
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十四层板(2、4、6、9、11、13层为GND层,残铜率60%;L3、5、7、8、10、12为线路面,残铜率为35%,填胶量:0.192mm)
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十六层板: (2、4、6、8、9、11、13、15层为GND层,残铜率60%;L3、5、7、10、12、14为线路面,残铜率为35%,填胶量:0.216mm)
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十八层板: (2、4、6、8、9、11、13、15、17层为GND层,残铜率60%;L3、5、7、10、12、14、16为线路面,残铜率为35%,填胶量:0.27mm)
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PCB层压结构参考 02A 02B 02CLayer 1 Layer 2(Top)(Bottom)(Top)(GND)(GND)(Bottom)04A 04B 04C 04D 04ELayer 1 Layer 2 Layer 3 Layer 4(Top)(GND)(PWR)(Bottom)(Top)(PWR)(GND)(Bottom)(PWR)(Signal)(Signal)(GND)(GND)(Signal)(Signal)(PWR)(GND)(Sig/Pwr)(Sig/Pwr)(GND)06A 06B 06C 06D 06E 06F 06G 06H 06J 06KLayer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6(Top)(GND)(Signal)(Signal)(PWR)(Bottom)(Top)(PWR)(Signal)(Signal)(GND)(Bottom)(Top)(Signal)(GND)(PWR)(Signal)(Bottom)(Top)(Signal)(PWR)(GND)(Signal)(Bottom)(GND)(Signal)(GND)(PWR)(Signal)(GND)(GND)(Signal)(PWR)(GND)(Signal)(GND)(Top)(GND 1)(Signal)(PWR)(GND 2)(Bottom)(Top)(GND 1)(PWR)(Signal)(GND 2)(Bottom)(Top)(PWR 1)(GND)(Signal)(PWR 2)(Bottom)(Top)(PWR 1)(Signal)(GND)(PWR 2)(Bottom) 08A 08B 08C 08D 08E 08F 08G 08H 08J 08KLayer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Layer 7 Layer 8(Top)(Signal)(GND)(Signal)(Signal)(PWR)(Signal)(Bottom)(Top)(Signal)(PWR)(Signal)(Signal)(GND)(Signal)(Bottom)(Top)(GND 1)(Signal)(GND 2)(PWR)(Signal)(GND 3)(Bottom)(Top)(GND 1)(Signal)(PWR)(GND 2)(Signal)(GND 3)(Bottom)(GND)(Signal)(Signal)(GND)(PWR)(Signal)(Signal)(GND)(GND)(Signal)(Signal)(PWR)(GND)(Signal)(Signal)(GND)(PWR)(Signal)(GND)(Signal)(Signal)(PWR)(Signal)(GND)(GND)(Signal)(PWR)(Signal)(Signal)(GND)(Signal)(PWR)(Top)(GND 1)(Sig/Pwr)(GND 2)(Sig/Pwr)(GND 3)(Sig/Pwr)(Bottom)(Top)(GND 1)(PWR 1)(Signal)(Signal)(PWR 2)(GND 2)(Bottom) 10A 10B 10C 10D 10E 10F 10G 10H 10J 10KLayer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Layer 7 Layer 8 Layer 9 Layer 10(Top)(GND 1)(Signal)(Signal)(PWR)(GND 2)(Signal)(Signal)(GND 3)(Bottom)(Top)(GND 1)(Signal)(Signal)(GND 2)(PWR)(Signal)(Signal)(GND 3)(Bottom)(Top)(GND 1)(Signal)(Signal)(PWR 1)(GND 2)(Signal)(Signal)(PWR 2)(Bottom)(Top)(PWR 1)(Signal)(Signal)(GND 1)(PWR 2)(Signal)(Signal)(GND 2)(Bottom)(Top)(GND 1)(Signal)(PWR 1)(GND 2)(Signal)(PWR 2)(Signal)(GND 3)(Bottom)(Top)(GND 1)(Signal)(PWR 1)(Signal)(Signal)(PWR 2)(Signal)(GND 2)(Bottom)(GND)(Signal)(Signal)(GND)(Signal)(Signal)(PWR)(Signal)(Signal)(GND)(GND)(Signal)(Signal)(PWR)(Signal)(Signal)(GND)(Signal)(Signal)(GND)(GND)(Signal)(GND 1)(PWR 1)(Signal)(Signal)(GND 2)(PWR 2)(Signal)(GND)(GND)(Signal)(PWR 1)(GND 1)(Signal)(Signal)(GND 2)(PWR 2)(Signal)(GND)12A 12B 12C 12D 12E 12F 12G 12H 12J 12K 12LLayer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Layer 7 Layer 8 Layer 9 Layer 10 Layer 11 Layer 12(Top)(GND 1)(PWR 1)(Signal)(Signal)(GND 2)(PWR 2)(Signal)(signal)(GND 3)(PWR 3)(Bottom)(Top)(PWR 1)(GND 1)(Signal)(Signal)(PWR 2)(GND 2)(Signal)(signal)(PWR 3)(GND 3)(Bottom)(Top)(GND 1)(Signal)(PWR 1)(Signal)(GND 2)(PWR2)(Signal)(PWR 3)(Signal)(GND 3)(Bottom)(Top)(GND 1)(Signal)(GND 2)(Signal)(PWR 1)(GND 3)(Signal)(PWR 2)(Signal)(GND 4)(Bottom)(Top)(GND 1)(Signal)(Signal)(PWR)(Signal)(Signal)(GND 2)(Signal)(Signal)(GND 3)(Bottom)(Top)(GND 1)(Signal)(Signal)(GND 2)(Signal)(Signal)(PWR)(Signal)(Signal)(GND 3)(Bottom)(Top)(GND 1)(Signal)(Signal)(PWR 1)(Signal)(Signal)(GND 2)(Signal)(Signal)(PWR 2)(Bottom)(Top)(PWR 1)(Signal)(Signal)(GND 1)(Signal)(Signal)(PWR 2)(Signal)(Signal)(GND 2)(Bottom)(GND)(Signal)(Signal)(PWR 1)(GND1)(Signal)(Signal)(PWR 2)(GND 2)(Signal)(Signal)(GND)(Top)(GND 1)(Signal)(Signal)(PWR)(GND 2)(Signal)(Signal)(GND 3)(Signal)(Signal)(GND)(GND)(PWR)(Signal)(Signal)(GND 1)(Signal)(Signal)(GND 2)(Signal)(Signal)(GND 3)(PWR)14A 14B 14C 14D 14E 14FLayer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Layer 7 Layer 8 Layer 9 Layer 10 Layer 11 Layer 12 Layer 13 Layer 14(Top)(GND 1)(Signal)(Signal)(PWR 1)(GND 2)(Signal)(Signal)(PWR 2)(GND 3)(Signal)(Signal)(PWR 3)(Bottom)(Top)(PWR 1)(Signal)(Signal)(GND 1)(PWR 2)(Signal)(Signal)(GND 2)(PWR 3)(Signal)(Signal)(GND 3)(Bottom)(GND 1)(Signal)(PWR 1)(GND 2)(Signal)(Signal)(PWR 2)(GND 3)(Signal)(Signal)(PWR 3)(GND 4)(Signal)(PWR 4)(PWR 1)(Signal)(GND 1)(PWR 2)(Signal)(Signal)(GND 2)(PWR 3)(Signal)(Signal)(GND 3)(PWR 4)(Signal)(GND 4)(Top)(GND 1)(Signal)(Signal)(GND 2)(Signal)(PWR 1)(GND 3)(Signal)(PWR 2)(Signal)(Signal)(GND 4)(Bottom)(Top)(PWR 1)(Signal)(GND 1)(Signal)(Signal)(PWR 2)(GND 2)(Signal)(Signal)(PWR 3)(Signal)(GND 3)(Bottom) 16A 16B 16C 16DLayer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Layer 7 Layer 8 Layer 9 Layer 10 Layer 11 Layer 12 Layer 13 Layer 14 Layer 15 Layer 16(Top)(GND 1)(PWR 1)(Signal)(Signal)(GND 2)(PWR 2)(Signal)(Signal)(GND 3)(PWR 3)(Signal)(Signal)(GND 4)(PWR 4)(Bottom)(Top)(PWR 1)(GND 1)(Signal)(Signal)(PWR 2)(GND 2)(Signal)(Signal)(PWR 3)(GND 3)(Signal)(Signal)(PWR 4)(GND 4)(Bottom)(GND 1)(Signal)(PWR 1)(Signal)(Signal)(GND 2)(PWR 2)(Signal)(Signal)(GND 3)(PWR 3)(Signal)(Signal)(GND 4)(Signal)(PWR 4)(PWR 1)(Signal)(GND 1)(Signal)(Signal)(PWR 2)(GND 2)(Signal)(Signal)(PWR 3)(GND 3)(Signal)(Signal)(PWR 4)(Signal)(GND 4)说明:1. 外表面作为 GND & PWR层压结构,其表面主要用于扇出和短长度连接。
No.L1--------------------------1/3oz + Plating2116*1 4milL2-------------------------0.7 H/H mm 含铜L3-------------------------2116*1 4milL4-------------------------1/3oz + Plating压合厚度:0.9±0.1MM成品厚度:1.0±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L4(屏蔽层L2/L3):单端:线宽 6.5mil ,阻值 50Ω±10%单端:线宽 4.5mil ,阻值 60Ω±10%差分:线宽6mil,线距6mil,阻值 90Ω±10%差分:线宽5mil,线距7mil,阻值 100Ω±10%No.L1--------------------------1/3oz + Plating1080*1 3milL2-------------------------0.7 H/H mm 含铜(偏上限料)L3-------------------------1080*1 3milL4-------------------------1/3oz + Plating压合厚度:0.9±0.1MM成品厚度:1.0±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L4(屏蔽层L2/L3):单端:线宽 5mil ,阻值 50Ω±10%单端:线宽 4mil ,阻值 55Ω±10%差分:线宽4.5mil,线距5.5mil,阻值 90Ω±10%差分:线宽3.5mil,线距5.5mil,阻值 100Ω±10% L3(屏蔽层L2&L4):差分:线宽3.5mil,线距6mil,阻值 90Ω±10%No.L1--------------------------1/3oz + Plating1080*1 3milL2-------------------------0.9MM 1/1 OZ 含铜L3-------------------------1080*1 3milL4-------------------------1/3oz + Plating压合厚度:1.1±0.1MM成品厚度:1.2±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L4(屏蔽层L2/L3):单端:线宽 4.7mil ,阻值 50Ω±10%单端:线宽 3.8mil ,阻值 55Ω±10%差分:线宽4.5mil,线距5.5mil,阻值 90Ω±10%差分:线宽3.5mil,线距5.5mil,阻值 100Ω±10%L3(屏蔽层L2&L4):单端:线宽 3mil ,阻值 55Ω±10%差分:线宽3mil,线距8mil,阻值 100Ω±10%No.L1--------------------------1/3oz + Plating2116*1 4milL2-------------------------0.15 H/H mm 含铜L3-------------------------7628*2 15milL4-------------------------0.15 H/H mm 含铜L5-------------------------2116*1 4milL6-------------------------1/3oz + Plating压合厚度:0.9±0.1MM成品厚度:1.0±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L6(屏蔽层L2/L5):单端:线宽 11mil ,阻值 60Ω±10%(阻抗层L1,屏蔽层L3)单端:线宽 4mil ,阻值 60Ω±10%差分:线宽4mil,线距4.5mil,阻值 100Ω±10%L3(屏蔽层L2&L4):单端:线宽 4mil ,阻值 60Ω±10%差分:线宽4mil,线距5mil,阻值 100Ω±10%No.L1--------------------------1/3oz + Plating2116*1 4milL2-------------------------0.2 H/H mm 含铜L3-------------------------2116*2 10milL4-------------------------0.2 H/H mm 含铜L5-------------------------2116*1 4milL6-------------------------1/3oz + Plating压合厚度:0.9±0.1MM成品厚度:1.0±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L6(屏蔽层L2/L5):单端:线宽 18.5mil ,阻值 50Ω±10%(阻抗层L1,屏蔽层L3)单端:线宽 5mil ,阻值 55Ω±10%差分:线宽5.5mil,线距6mil,阻值 90Ω±10%差分:线宽4mil,线距6mil,阻值 100Ω±10%L4(屏蔽层L3&L5):单端:线宽 5mil ,阻值 55Ω±10%差分:线宽6mil,线距6mil,阻值 90Ω±10%差分:线宽4mil,线距4.5mil,阻值 100Ω±10%No.L1--------------------------1/3oz + Plating1080*1 3milL2-------------------------0.15MM 1/1 含铜L3-------------------------7628*2 16milL4-------------------------0.15MM 1/1 含铜L5-------------------------1080*1 3milL6-------------------------1/3oz + Plating压合厚度:0.9±0.1MM成品厚度:1.0±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L6(屏蔽层L2/L5):单端:线宽 13.5mil ,阻值 50Ω±10%(阻抗层L1,屏蔽层L3)单端:线宽 4.6mil ,阻值 50Ω±10%差分:线宽4.2mil,线距4.5mil,阻值 90Ω±10%差分:线宽3.5mil,线距5.5mil,阻值 100Ω±10%L4(屏蔽层L3&L5):单端:线宽 4mil ,阻值 50Ω±10%差分:线宽3mil,线距7mil,阻值 100Ω±10%No.L1--------------------------1/3oz + Plating1080*1 3milL2-------------------------0.15MM 1/1OZ 含铜L3-------------------------7628*2 16milL4-------------------------0.15MM 1/1OZ 含铜L5-------------------------1080*1 3milL6-------------------------1/3oz + Plating压合厚度:0.9±0.1MM成品厚度:1.0±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L6(屏蔽层L2/L5):单端:线宽 4.7mil ,阻值 50Ω±10%差分:线宽4.7mil,线距6mil,阻值 90Ω±10%差分:线宽4mil,线距8mil,阻值 100Ω±10%L4(屏蔽层L3&L5):差分:线宽3.2mil,线距8.8mil,阻值100Ω±10%No.L1--------------------------1/3oz + Plating1080*1 3milL2-------------------------0.2 1/1 mm 含铜L3-------------------------7628*2+2116*1 20milL4-------------------------0.2 1/1 mm 含铜L5-------------------------1080*1 3milL6-------------------------1/3oz + Plating压合厚度:1.1±0.1MM成品厚度:1.2±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L6(屏蔽层L2/L5):单端:线宽 5mil ,阻值 50Ω±10%单端:线宽 4mil ,阻值 55Ω±10%差分:线宽 5mil,线距8mil,阻值 90Ω±10%差分:线宽 3.5mil,线距4.5mil,阻值 100Ω±10% L3(屏蔽层L2&L4):单端:线宽 5mil ,阻值 55Ω±10%差分:线宽 5mil,线距5.5mil,阻值 90Ω±10%No.L1--------------------------1/3oz + Plating1080*1 3milL2-------------------------0.15MM 1/1OZ 含铜L3-------------------------7628*3 24milL4-------------------------0.15MM 1/1OZ 含铜1080*1 3milL6-------------------------1/3oz + Plating压合厚度:1.1±0.1MM成品厚度:1.2±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L6(屏蔽层L2/L5):单端:线宽 4.6mil ,阻值 50Ω±10%单端:线宽 3.7mil ,阻值 55Ω±10%差分:线宽 4mil,线距4.5mil,阻值 90Ω±10%差分:线宽 3.3mil,线距5mil,阻值 100Ω±10% L3(屏蔽层L2&L4):单端:线宽 3.2mil ,阻值 55Ω±10%差分:线宽 3.5mil,线距5.5mil,阻值 90Ω±10%差分:线宽 3mil,线距7mil,阻值 100Ω±10%No.L1--------------------------1/3oz + Plating1080*1 3milL2-------------------------0.15 1/1 mm 含铜L3-------------------------2116*1 5mil-------------------------0.4 H/H mm 含铜(蚀刻成光板)-------------------------2116*1 5milL4-------------------------0.15 1/1 mm 含铜L5-------------------------1080*1 3milL6-------------------------1/3oz + Plating压合厚度:1.1±0.1MM成品厚度:1.2±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L6(屏蔽层L2/L5):单端:线宽 5mil ,阻值 50Ω±10%单端:线宽 4mil ,阻值 55Ω±10%差分:线宽 4mil,线距4mil,阻值 90Ω±10%L4(屏蔽层L2&L5):单端:线宽 3.5mil ,阻值 55Ω±10%差分:线宽 3.3mil,线距4.7mil,阻值 90Ω±10%No.L1--------------------------1/3oz + Plating2116*1 4.6mil0.2 H/H mm 含铜L3-------------------------2116*1 4.6milL4-------------------------0.2 H/H mm 含铜L5-------------------------2116*1 4.6milL6-------------------------0.2 H/H mm 含铜L7-------------------------2116*1 4.6milL8-------------------------1/3oz + Plating压合厚度:1.1±0.1MM成品厚度:1.2±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L8(屏蔽层L2/L7):单端:线宽 7.87mil ,阻值 50Ω±10%单端:线宽 4mil ,阻值 65Ω±10%差分:线宽 4.5mil,线距5mil,阻值 100Ω±10% L3(屏蔽层L2&L4):单端:线宽 4mil ,阻值 55Ω±10%差分:线宽 4mil,线距8mil,阻值 100Ω±10%L5(屏蔽层L4&L6):单端:线宽 4mil ,阻值 55Ω±10%差分:线宽 4mil,线距8mil,阻值 100Ω±10%L6(屏蔽层L5&L7):单端:线宽 4mil ,阻值 55Ω±10%差分:线宽 4mil,线距8mil,阻值 100Ω±10%No.L1--------------------------1/3oz + Plating2116*1 4milL2-------------------------0.6 H/H mm 含铜L3-------------------------2116*1 4milL4-------------------------1/3oz + Plating压合厚度:0.8±0.1MM成品厚度:0.9±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L4(屏蔽层L2/L3):单端:线宽 6mil ,阻值 50Ω±10%单端:线宽 4mil ,阻值 60Ω±10%No.L1--------------------------1/3oz + Plating2116*1 4milL2-------------------------0.7 1/1 mm 含铜L3-------------------------2116*1 4milL4-------------------------1/3oz + Plating压合厚度:0.9±0.1MM成品厚度:1.0±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L4(屏蔽层L2/L3):单端:线宽 6mil ,阻值 50Ω±10%单端:线宽 5mil ,阻值 55Ω±10%差分:线宽6mil,线距7mil,阻值 90Ω±10%差分:线宽4mil,线距5.5mil,阻值 100Ω±10%No.L1--------------------------1/3oz + Plating1080*1 3milL2-------------------------0.7 H/H mm 含铜L3-------------------------1080*1 3milL4-------------------------1/3oz + Plating压合厚度:0.9±0.1MM成品厚度:1.0±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L4(屏蔽层L2/L3):单端:线宽 6mil ,阻值 45Ω±10%单端:线宽 5mil ,阻值 50Ω±10%差分:线宽4.8mil,线距5.44mil,阻值 90Ω±10%差分:线宽4.5mil,线距8mil,阻值 95Ω±10%No.L1--------------------------1/3oz + Plating1080*1 2.8milL2-------------------------0.15 H/H mm 含铜L3-------------------------7628*2+1080*1 17.8milL4-------------------------0.15 H/H mm 含铜L5-------------------------1080*1 2.8milL6-------------------------1/3oz + Plating压合厚度:0.9±0.1MM成品厚度:1.0±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L6(屏蔽层L2/L5):单端:线宽 14mil ,阻值 50Ω±10%(阻抗层L1,屏蔽层L3)单端:线宽 4.5mil ,阻值 50Ω±10%差分:线宽5mil,线距10mil,阻值 90Ω±10%差分:线宽4mil,线距9mil,阻值 100Ω±10%L3/L4(屏蔽层L2&L5):单端:线宽 5mil ,阻值 50Ω±10%差分:线宽5mil,线距5mil,阻值 90Ω±10%差分:线宽4mil,线距6mil,阻值 100Ω±10%No.L1--------------------------1/3oz + Plating1080*1 2.8milL2-------------------------0.15MM 1/1 含铜L3-------------------------7628*2+1080*1 17.8milL4-------------------------0.15MM 1/1 含铜L5-------------------------1080*1 2.8milL6-------------------------1/3oz + Plating压合厚度:0.9±0.1MM成品厚度:1.0±0.1MMPP厚度为填胶后厚度阻抗计算:L1/L6(屏蔽层L2/L5):单端:线宽 13mil ,阻值 50Ω±10%(阻抗层L1,屏蔽层L3)单端:线宽 4.3mil ,阻值 50Ω±10%差分:线宽4.3mil,线距5.7mil,阻值 90Ω±10%差分:线宽3.1mil,线距4.9mil,阻值 100Ω±10%L3/L4(屏蔽层L2&L5):单端:线宽 4mil ,阻值 50Ω±10%差分:线宽4mil,线距7.5mil,阻值 90Ω±10%差分:线宽3mil,线距7mil,阻值 100Ω±10%No.L1--------------------------1/3oz + Plating2116*1 4milL2-------------------------0.15 H/H mm 含铜L3-------------------------2116*1 4mil-------------------------0.8 H/H mm 含铜(蚀刻成光板)-------------------------2116*1 4milL4-------------------------0.15 H/H mm 含铜L5-------------------------2116*1 4milL6-------------------------1/3oz + Plating压合厚度:1.5±0.15MM成品厚度:1.6±0.15MMPP厚度为填胶后厚度阻抗计算:L1/L6(屏蔽层L2/L5):单端:线宽 5mil ,阻值 55Ω±10%差分:线宽 5mil,线距7.5mil,阻值 100Ω±10%L3(屏蔽层L2&L5):单端:线宽5mil ,阻值 55Ω±10%差分:线宽 5mil,线距7.5mil,阻值 100Ω±10%No.L1--------------------------1/3oz + Plating2116*1 4.5milL2-------------------------0.15 1/1 mm 含铜L3-------------------------7628*1 7mil-------------------------0.7 H/H mm 含铜(蚀刻成光板)-------------------------7628*1 7milL4-------------------------0.15 1/1 mm 含铜L5-------------------------2116*1 4.5milL6-------------------------1/3oz + Plating压合厚度:1.5±0.15MM成品厚度:1.6±0.15MMPP厚度为填胶后厚度阻抗计算:L1/L6(屏蔽层L2/L5):单端:线宽 6mil ,阻值 55Ω±10%差分:线宽 5.5mil,线距7mil,阻值 100Ω±10%L3/L4(屏蔽层L2&L5):单端:线宽4mil ,阻值 55Ω±10%差分:线宽 4.8mil,线距7.7mil,阻值 90Ω±10%差分:线宽 3.8mil,线距8.7mil,阻值 100Ω±10% No.L1--------------------------Hoz + Plating2116*1 4milL2-------------------------0.2MM 1/1OZ 含铜L3-------------------------2116*1 4mil1080*1 3milL4-------------------------0.2MM 1/1OZ 含铜L5-------------------------1506*1 6milL6-------------------------0.2MM 1/1OZ 含铜L7-------------------------1080*1 3mil2116*1 4milL8-------------------------0.2MM 1/1OZ 含铜L9-------------------------2116*1 4milL10-------------------------Hoz + Plating压合厚度:1.5±0.15MM成品厚度:1.6±0.16MMPP厚度为填胶后厚度阻抗计算:L1/L10(屏蔽层L2/L9):单端:线宽 6.5mil ,阻值 50Ω±10%差分:线宽5mil,线距8mil,阻值 100Ω±10%L3/L4(屏蔽层L2&L5): 单端:线宽 5.5mil ,阻值 50Ω±10%差分:线宽4.5mil,线距9mil,阻值 100Ω±10% L7/L8(屏蔽层L6&L9): 单端:线宽 5.5mil ,阻值 50Ω±10%差分:线宽4.5mil,线距9mil,阻值 100Ω±10%。
阻抗多层板:层压结构及参数阻抗计算的几个注意事项(1)线宽宁愿宽,不要细。
因为我们知道制程里存在细的极限,宽是没有极限的。
如果到时候板厂为了调阻抗把线宽调细而碰到细的极限时那就麻烦了,要么增加成本,要么范松阻抗管控,要么修改设计...所以在计算时相对宽就意味着目标阻抗稍微偏低,比如50欧姆,我们算到49欧姆就可以了,尽量不要算到51欧姆。
(2)整体呈现一个趋势。
我们的设计中可能有多个阻抗管控目标,那么就整体偏大或偏小,不要100欧姆的偏大,90欧姆的偏小(3)考虑残铜率和流胶量。
当半固化片一边或两片是蚀刻线路时,压合过程中胶会去填补蚀刻的空隙处,这样两层间的胶厚度会减小,残铜率越小,填的越多,剩下的越少。
所以如果你需要的两层间半固化片厚度是5mil,要根据残铜率选择稍厚的半固化片。
(4)指定玻璃布型号和含胶量。
看过板材datasheet都知道不同的玻璃布,不同的含胶量的半固化片或者芯板的节点系数是不同的,即使是差不多高度的也可能是3.5和4的差别,这个差别可以引起单线阻抗3欧姆左右的变化。
另外玻纤效应和玻璃布开窗大小密切相关,如果你是10Gbps或更高速的设计,而你的叠层又没有指定材料,板厂用了单张1080的材料,那就可能出现信号完整性问题。
(5)多和板厂沟通当然残铜率和流胶量有时候计算会有误差,新材料的介电系数有时和标称不一致,有的玻璃布板厂没有备料等等都会造成设计的叠层实现不了或者交期延后。
出现这些情况的时候,最好的办法就是在设计之初让板厂按设计师的要求,根据他们的经验设计个叠层,经过多次的沟通和确认,这样最多几个来回就可以得到理想的叠层,方便后续的设计。
层叠设计关于层叠和阻抗设计,设计师需要经历的几个阶段(1)小白级:刚接触PCB设计的时候,可能所涉及的产品非常简单不属于高速的范畴,完全不需要控制阻抗,把线拉通就完事了,运气好点的工程师刚涉及PCB设计的时候就能接触高速的产品,但是却不知道要控制阻抗,导致设计出问题;(2)初级:经过一段时间的PCB设计,慢慢了解到阻抗相关的一些概念,具备了高速电路的一些基本知识,知道了控制阻抗的必要性,但是缺乏PCB材料和工艺制程以及阻抗计算相关的一些知识,对阻抗的认识还不是很深,只知道控阻抗需要提供阻抗需求表给板厂给板厂来控。
PCB叠层结构参考即多层板叠层建议电路板的叠层安排是对PCB的整个系统设计的基础。
叠层设计如有缺陷, 将最终影响到整机的EMC性能。
总的来说叠层设计主要要遵从两个规矩:1. 每个走线层都必须有一个邻近的参考层(电源或地层);2. 邻近的主电源层和地层要保持最小间距,以提供较大的耦合电容;下面列出从两层板到十层板的叠层:一、单面PCB板和双面PCB板的叠层对于两层板来说,由于板层数量少,已经不存在叠层的问题。
控制EMI辐射主要从布线和布局来考虑;单层板和双层板的电磁兼容问题越来越突出。
造成这种现象的主要原因就是因是信号回路面积过大,不仅产生了较强的电磁辐射,而且使电路对外界干扰敏感。
要改善线路的电磁兼容性,最简单的方法是减小关键信号的回路面积。
关键信号:从电磁兼容的角度考虑,关键信号主要指产生较强辐射的信号和对外界敏感的信号。
能够产生较强辐射的信号一般是周期性信号,如时钟或地址的低位信号。
对干扰敏感的信号是指那些电平较低的模拟信号。
单、双层板通常使用在低于10KHZ的低频模拟设计中:1在同一层的电源走线以辐射状走线,并最小化线的长度总和;2走电源、地线时,相互靠近;在关键信号线边上布一条地线,这条地线应尽量靠近信号线。
这样就形成了较小的回路面积,减小差模辐射对外界干扰的敏感度。
当信号线的旁边加一条地线后,就形成了一个面积最小的回路,信号电流肯定会取道这个回路,而不是其它地线路径。
3如果是双层线路板,可以在线路板的另一面,紧靠近信号线的下面,沿着信号线布一条地线,一线尽量宽些。
这样形成的回路面积等于线路板的厚度乘以信号线的长度。
、四层板的叠层;推荐叠层方式:1. SIG —GND(PWR) —PWR (GND) —SIG ;2. GND -SIG(PWR) —SIG(PWR) —GND ;对于以上两种叠层设计,潜在的问题是对于传统的 1.6mm (62mil)板厚。
层间距将会变得很大,不仅不利于控制阻抗,层间耦合及屏蔽;特别是电源地层之间间距很大,降低了板电容,不利于滤除噪声。
PCB阻抗设计及叠层结构目录前言 (4)第一章阻抗计算工具及常用计算模型 (7)1.0 阻抗计算工具 (7)1.1 阻抗计算模型 (7)1.11. 外层单端阻抗计算模型 (7)1.12. 外层差分阻抗计算模型 (8)1.13. 外层单端阻抗共面计算模型 (8)1.14. 外层差分阻抗共面计算模型 (9)1.15. 内层单端阻抗计算模型 (9)1.16. 内层差分阻抗计算模型 (10)1.17. 内层单端阻抗共面计算模型 (10)1.18. 内层差分阻抗共面计算模型 (11)1.19. 嵌入式单端阻抗计算模型 (11)1.20. 嵌入式单端阻抗共面计算模型 (12)1.21. 嵌入式差分阻抗计算模型 (12)1.22. 嵌入式差分阻抗共面计算模型 (13)第二章双面板设计 (14)2.0 双面板常见阻抗设计与叠层结构 (14)2.1. 50 100 || 0.5mm (14)2.2. 50 || 100 || 0.6mm (14)2.3. 50 || 100 || 0.8mm (15)2.4. 50 || 100 || 1.6mm (15)2.5. 50 70 || 1.6mm (15)2.6. 50 || 0.9mm || Rogers Er=3.5 (16)2.7. 50 || 0.9mm || Arlon Diclad 880 Er=2.2 (16)第三章四层板设计 (17)3.0. 四层板叠层设计方案 (17)3.1. 四层板常见阻抗设计与叠层结构 (18)3.10. SGGS || 50 55 60 || 90 100 || 0.8mm 1.0mm 1.2mm 1.6mm 2.0mm (18)3.11. SGGS || 50 55 60 || 90 100 || 0.8mm 1.0mm 1.2mm 1.6mm 2.0mm (19)3.12. SGGS || 50 55 60 || 90 95 100 || 1.6mm (20)3.13. SGGS || 50 55 60 || 85 90 95 100 || 1.0mm 1.6mm (21)3.14. SGGS || 50 55 75 || 100 || 1.0mm 2.0mm (22)3.15. GSSG || 50 || 100 || 1.0mm (22)3.16. SGGS || 75 ||100 105 || 1.3mm 1.6mm (23)3.17. SGGS || 50 100 || 1.3mm (23)3.18. SGGS || 50 100 || 1.6mm (24)3.19. SGGS || 50 || 1.6mm || 混压 (24)3.20. SGGS || 50 || 1.6mm || 混压 (25)3.21. SGGS || 50 || 100 || 2.0mm (25)第四章六层板设计 (26)4.0. 六层板叠层设计方案 (26)4.1. 六层板常见阻抗设计与叠层结构 (27)4.10. SGSSGS || 50 55 || 90 100 || 1.0mm (27)4.11. SGSSGS || 50 || 90 100 || 1.0mm (28)4.12. SGSSGS || 50 || 90 100 || 1.6mm (29)4.13. SGSGGS || 50 || 90 100 || 1.6mm (30)4.14. SGSGGS || 50 || 90 100 || 1.6mm (31)4.15. SGSSGS || 50 75 || 100 || 1.6mm (32)4.16. SGSSGS || 50 || 90 100 || 1.6mm (33)4.17. SGSSGS || 50 || 100 || 1.6mm (34)4.18. SGSSGS || 50 60 || 90 100 || 1.6mm (35)4.19. SGSSGS || 50 60 || 100 110 || 1.6mm (36)4.20. SGSSGS || 50 || 90 100 || 1.6mm (37)4.21. SGSSGS || 65 75 || 100 || 1.6mm (38)4.22. SGSGGS || 50 55 || 85 90 100 || 1.6mm (39)4.23. SGSSGS || 50 55 || 90 100 || 1.6mm (40)4.24. SGSGGS || 50 55 || 90 100 || 1.6mm (41)4.25. SGSGGS || 50 || 90 100 || 1.6mm (42)4.26. SGGSGS || 50 60 || 90 100 || 1.6mm (43)4.27. SGSGGS || 37.5 50 || 100 || 2.0mm (44)4.28. SGSGGS || 37.5 50 || 100 || 2.0mm (45)4.29. SGSGGS || 37.5 50 || 100 || 2.0mm (46)4.30. SGSGGS || 37.5 50 || 100 || 2.0mm (47)第五章八层板设计 (48)5.0. 八层板叠层设计方案 (48)5.1. 八层板常见阻抗设计与叠层结构 (49)5.10. SGSSGSGS || 50 55 || 90 100 || 1.0mm (49)5.11. SGSGGSGS || 50 55 || 90 100 || 1.0mm (50)5.12. SGSGGSGS || 55 || 90 100 || 1.0mm (51)5.13. SGSSGSGS || 55 90 100 || 1.6mm (52)5.14. SGSGGSGS || 50 || 100 || 1.6mm (53)5.15. SGSGGSGS || 55 90 100 || 1.6mm (54)5.16. SGSGGSGS || 50 55 || 100 || 1.6mm (55)5.17. SGSSGSGS || 37.5 50 55 75 || 90 100 || 1.6mm (56)5.18. SSGSSGSS || 50 || 100 || 1.6mm (57)5.19. SGSGSSGS || 50 55 || 90 100 || 1.6mm (58)5.20. GSGSSGSG || 50 60 || 100 || 2.0mm (59)5.21. SGSGGSGS || 37.5 50 55 75 || 90 100 || 2.0mm (60)5.22. SSGSSGSS || 50 55 60 || 100 || 2116 2.0mm (61)5.23. SGSG GSGS || 55 || 90 100 || 2116 2.0mm (62)5.24. SGSGGSGS || 50 65 70 || 50 85 100 110 || 2.0mm (63)5.25. GSGSSGSG || 50 ||100 || 2.0mm (64)5.26. SGSGSSGS || 50 55 60 || 85 90 100 || 2.0mm (65)5.27. SGSSGSGS || 50 55 || 90 100 || 2.0mm (67)第六章十层板设计 (68)6.0 十层板叠层设计方案 (68)6.1. 十层常见阻抗设计与叠层结构 (69)6.10. SGSSGSGSGS || 50 || 100 || 1.6mm (69)6.11. SGSSGSGSGS || 50 || 100 || 1.6mm (70)6.12. SGSSG GSSGS || 50 || 90 100 || 1.6mm (71)6.13. SGSGG SGSGS || 50 || 90 100 || 2.0mm (72)6.14. SGSSGGSSGS || 50 || 100 || 1.8mm (73)6.15. SGSSGGSSGS || 50 || 100 || 2.0mm (74)6.16. SGSSGGSSGS || 50 || 90 100 || 2.0mm (75)6.17. SGSGGSGSGS || 50 || 100 || 2.0mm (76)6.18. SGSSGSGSGS || 50 || 90 100 || 2.0mm (77)6.19. SGSGSGGSGS || 50 || 100 || 2.0mm (78)6.20. SGSGSGGSGS || 50 75 || 150 || 2.4mm (79)6.21. SGGSSGSGGS || 50 75 || 100 || 1.8mm (80)第七章十二层板设计 (81)7.0 十二层板叠层设计方案 (81)7.1 十二层常见阻抗设计与叠层结构 (82)7.10. SGSGSGGSGSGS || 33 37.5 40 50 || 85 90 100 || 1.6mm (82)7.11. SGSSGSSGSSGS || 50 || 100 || 1.6mm (83)7.12. SGSGSGGSGSGS || 50 || 100 || 1.6mm (85)7.13. SGSGSGGSGSGS || 33 37.5 40 50 || 85 90 100 || 1.6mm (86)7.14. SGSGSGGSGSGS || 33 37.5 40 50 || 85 90 100 || 1.6mm (87)7.15. SGSSGGSSGSGS || 45 50 || 100 || 1.6mm (89)7.16. SG SG SG GS GS GS || 50 || 100 || 1.6mm (90)7.17. SGSGSGGSGSGS || 50 60 || 100 || 2.0mm (91)7.18. SGSGSGGSGSGS || 50 55 || 90 100 || 2.0mm (92)7.19. SGSGSGGSGSGS || 50 60 || 100 || 2.2mm (93)前言随着信号传输速度的迅猛提高以及高频电路的广泛应用,对印刷电路板也提出了更高的要求。要得到完整、可靠、精确、无干扰、噪音的传输信号。就必须保证印刷电路板提供的电路性能保证信号在传输过程中不发生反射现象,信号完整,传输损耗低,起到匹配阻抗的作用。为了使信号,低失真﹑低干扰、低串音及消除电磁干扰EMI。阻抗设计在PCB设计中显得越来越重要。对我们而言,除了要保证PCB板的短、断路合格外,还要保证阻抗值在规定的范围内,只有这两方向都合格了印刷板才符合客户的要求。
常用PCB层叠
说明:以下为常用的2-8层板公司最常用的层叠, 在之前成熟层叠的根底上汇总,这些层叠都是我们公司经过批量验证OK的,请在设计时调用.因为这是是个通用模板,适合所有情况,整理在一起的时侯,可能有些微调.各种叠法很多,未包含的后续再补充.未包含的情况大家类似目前处理方法,找到之前曾设计单板参考,根本都有.
备注:
1)改版还按之前的方式,新版设计,包括套用之前的模块布线,如果有更改,请修改下,方便后续重用.
2)设计中如果没有用到模板中的阻抗线,请在模板中删除
3)其他信号不得与有阻抗控制的信号线宽一致.有一致,其他信号线宽要稍作修改
4)根据实际情况选择对应的层叠,特别是如果没有及其以下间距的BGA器件的,选用对应的.请务必对应好,方便后续套用.
一.2层板
层叠:
阻抗控制表,一般不控制阻抗,无须填写
备注:不同板厚的2层板根据板厚修改1,2层之间的介质厚度即可,其他不变
二.4层板
:
阻抗要求:
:
1.单板上有及其以下PIN间距的BGA器件,有1或者2个布线内层. 如果一个内层布线,默认第3层为布线层,第4层为POWER.其他不变1)板厚
典型应用:含365,368,A5,8107等IC的PCB
2)板厚
典型应用:含365,368,A5,8107等IC的PCB
3. 单板上无及其以下PIN间距的BGA器件, 有1或者2个布线内层1)板厚
2)板厚
四.8层板
标准层叠,2个布线内层.
1.单板上有及其以下PIN间距的BGA器件,且2个内层1)板厚
1)板厚
2)板厚
及其以下PIN间距的BGA器件, 标准层叠,2个布线内层
1)板厚
2)板厚。
pcb常用层压参数在PCB(Printed Circuit Board,印刷电路板)制造中,层压参数指的是板材的层次和厚度,这些参数直接影响电路板的性能和特性。
以下是一些常用的PCB层压参数:层数(Layer Count): PCB可以是单层、双层、四层、六层、八层,甚至更多层次的结构。
层数取决于电路板上需要布局的电路元件和信号复杂性。
板厚 (Board Thickness):通常以毫米 (mm)为单位,常见的厚度包括1.6mm、1.0mm、0.8mm等。
板厚直接影响电路板的机械强度和尺寸。
铜箔厚度 (Copper Thickness):以盎司 (oz)为单位,常见值包括1oz、2oz、3oz等。
铜箔厚度决定了导电性和散热性能。
内层铜箔厚度 (Inner Layer Copper Thickness):对于多层PCB,内层的铜箔也有其独立的厚度参数。
覆铜厚度(Copper Plating Thickness): 在孔壁和孔内涂覆的铜层厚度,通常以μm为单位。
它影响电气连接性和耐腐蚀性。
绝缘层材料 (Insulation Material):常见的材料包括FR-4 (玻璃纤维增强环氧树脂)、FR-1、FR-2等。
不同的材料具有不同的电气性能和热特性。
阻焊层 (Solder Mask): 用于保护电路不被外部环境氧化,防止短路的层。
颜色可以是绿色、红色、蓝色等。
喷镀或沉金层(Surface Finish): 用于保护焊盘,常见的有HASL (Hot Air Solder Leveling)、ENIG (Electroless Nickel Immersion Gold)、OSP (Organic Solderability Preservatives)等。
这些层压参数的选择取决于具体的应用需求、设计要求以及生产工艺。
在设计PCB时,工程师需要根据电路的性质和所需功能来选择适当的层压参数。
PCB层压结构参考 02A 02B 02CLayer 1 Layer 2(Top)(Bottom)(Top)(GND)(GND)(Bottom)04A 04B 04C 04D 04ELayer 1 Layer 2 Layer 3 Layer 4(Top)(GND)(PWR)(Bottom)(Top)(PWR)(GND)(Bottom)(PWR)(Signal)(Signal)(GND)(GND)(Signal)(Signal)(PWR)(GND)(Sig/Pwr)(Sig/Pwr)(GND)06A 06B 06C 06D 06E 06F 06G 06H 06J 06KLayer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6(Top)(GND)(Signal)(Signal)(PWR)(Bottom)(Top)(PWR)(Signal)(Signal)(GND)(Bottom)(Top)(Signal)(GND)(PWR)(Signal)(Bottom)(Top)(Signal)(PWR)(GND)(Signal)(Bottom)(GND)(Signal)(GND)(PWR)(Signal)(GND)(GND)(Signal)(PWR)(GND)(Signal)(GND)(Top)(GND 1)(Signal)(PWR)(GND 2)(Bottom)(Top)(GND 1)(PWR)(Signal)(GND 2)(Bottom)(Top)(PWR 1)(GND)(Signal)(PWR 2)(Bottom)(Top)(PWR 1)(Signal)(GND)(PWR 2)(Bottom) 08A 08B 08C 08D 08E 08F 08G 08H 08J 08KLayer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Layer 7 Layer 8(Top)(Signal)(GND)(Signal)(Signal)(PWR)(Signal)(Bottom)(Top)(Signal)(PWR)(Signal)(Signal)(GND)(Signal)(Bottom)(Top)(GND 1)(Signal)(GND 2)(PWR)(Signal)(GND 3)(Bottom)(Top)(GND 1)(Signal)(PWR)(GND 2)(Signal)(GND 3)(Bottom)(GND)(Signal)(Signal)(GND)(PWR)(Signal)(Signal)(GND)(GND)(Signal)(Signal)(PWR)(GND)(Signal)(Signal)(GND)(PWR)(Signal)(GND)(Signal)(Signal)(PWR)(Signal)(GND)(GND)(Signal)(PWR)(Signal)(Signal)(GND)(Signal)(PWR)(Top)(GND 1)(Sig/Pwr)(GND 2)(Sig/Pwr)(GND 3)(Sig/Pwr)(Bottom)(Top)(GND 1)(PWR 1)(Signal)(Signal)(PWR 2)(GND 2)(Bottom) 10A 10B 10C 10D 10E 10F 10G 10H 10J 10KLayer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Layer 7 Layer 8 Layer 9 Layer 10(Top)(GND 1)(Signal)(Signal)(PWR)(GND 2)(Signal)(Signal)(GND 3)(Bottom)(Top)(GND 1)(Signal)(Signal)(GND 2)(PWR)(Signal)(Signal)(GND 3)(Bottom)(Top)(GND 1)(Signal)(Signal)(PWR 1)(GND 2)(Signal)(Signal)(PWR 2)(Bottom)(Top)(PWR 1)(Signal)(Signal)(GND 1)(PWR 2)(Signal)(Signal)(GND 2)(Bottom)(Top)(GND 1)(Signal)(PWR 1)(GND 2)(Signal)(PWR 2)(Signal)(GND 3)(Bottom)(Top)(GND 1)(Signal)(PWR 1)(Signal)(Signal)(PWR 2)(Signal)(GND 2)(Bottom)(GND)(Signal)(Signal)(GND)(Signal)(Signal)(PWR)(Signal)(Signal)(GND)(GND)(Signal)(Signal)(PWR)(Signal)(Signal)(GND)(Signal)(Signal)(GND)(GND)(Signal)(GND 1)(PWR 1)(Signal)(Signal)(GND 2)(PWR 2)(Signal)(GND)(GND)(Signal)(PWR 1)(GND 1)(Signal)(Signal)(GND 2)(PWR 2)(Signal)(GND)12A 12B 12C 12D 12E 12F 12G 12H 12J 12K 12LLayer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Layer 7 Layer 8 Layer 9 Layer 10 Layer 11 Layer 12(Top)(GND 1)(PWR 1)(Signal)(Signal)(GND 2)(PWR 2)(Signal)(signal)(GND 3)(PWR 3)(Bottom)(Top)(PWR 1)(GND 1)(Signal)(Signal)(PWR 2)(GND 2)(Signal)(signal)(PWR 3)(GND 3)(Bottom)(Top)(GND 1)(Signal)(PWR 1)(Signal)(GND 2)(PWR2)(Signal)(PWR 3)(Signal)(GND 3)(Bottom)(Top)(GND 1)(Signal)(GND 2)(Signal)(PWR 1)(GND 3)(Signal)(PWR 2)(Signal)(GND 4)(Bottom)(Top)(GND 1)(Signal)(Signal)(PWR)(Signal)(Signal)(GND 2)(Signal)(Signal)(GND 3)(Bottom)(Top)(GND 1)(Signal)(Signal)(GND 2)(Signal)(Signal)(PWR)(Signal)(Signal)(GND 3)(Bottom)(Top)(GND 1)(Signal)(Signal)(PWR 1)(Signal)(Signal)(GND 2)(Signal)(Signal)(PWR 2)(Bottom)(Top)(PWR 1)(Signal)(Signal)(GND 1)(Signal)(Signal)(PWR 2)(Signal)(Signal)(GND 2)(Bottom)(GND)(Signal)(Signal)(PWR 1)(GND1)(Signal)(Signal)(PWR 2)(GND 2)(Signal)(Signal)(GND)(Top)(GND 1)(Signal)(Signal)(PWR)(GND 2)(Signal)(Signal)(GND 3)(Signal)(Signal)(GND)(GND)(PWR)(Signal)(Signal)(GND 1)(Signal)(Signal)(GND 2)(Signal)(Signal)(GND 3)(PWR)14A 14B 14C 14D 14E 14FLayer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Layer 7 Layer 8 Layer 9 Layer 10 Layer 11 Layer 12 Layer 13 Layer 14(Top)(GND 1)(Signal)(Signal)(PWR 1)(GND 2)(Signal)(Signal)(PWR 2)(GND 3)(Signal)(Signal)(PWR 3)(Bottom)(Top)(PWR 1)(Signal)(Signal)(GND 1)(PWR 2)(Signal)(Signal)(GND 2)(PWR 3)(Signal)(Signal)(GND 3)(Bottom)(GND 1)(Signal)(PWR 1)(GND 2)(Signal)(Signal)(PWR 2)(GND 3)(Signal)(Signal)(PWR 3)(GND 4)(Signal)(PWR 4)(PWR 1)(Signal)(GND 1)(PWR 2)(Signal)(Signal)(GND 2)(PWR 3)(Signal)(Signal)(GND 3)(PWR 4)(Signal)(GND 4)(Top)(GND 1)(Signal)(Signal)(GND 2)(Signal)(PWR 1)(GND 3)(Signal)(PWR 2)(Signal)(Signal)(GND 4)(Bottom)(Top)(PWR 1)(Signal)(GND 1)(Signal)(Signal)(PWR 2)(GND 2)(Signal)(Signal)(PWR 3)(Signal)(GND 3)(Bottom) 16A 16B 16C 16DLayer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Layer 7 Layer 8 Layer 9 Layer 10 Layer 11 Layer 12 Layer 13 Layer 14 Layer 15 Layer 16(Top)(GND 1)(PWR 1)(Signal)(Signal)(GND 2)(PWR 2)(Signal)(Signal)(GND 3)(PWR 3)(Signal)(Signal)(GND 4)(PWR 4)(Bottom)(Top)(PWR 1)(GND 1)(Signal)(Signal)(PWR 2)(GND 2)(Signal)(Signal)(PWR 3)(GND 3)(Signal)(Signal)(PWR 4)(GND 4)(Bottom)(GND 1)(Signal)(PWR 1)(Signal)(Signal)(GND 2)(PWR 2)(Signal)(Signal)(GND 3)(PWR 3)(Signal)(Signal)(GND 4)(Signal)(PWR 4)(PWR 1)(Signal)(GND 1)(Signal)(Signal)(PWR 2)(GND 2)(Signal)(Signal)(PWR 3)(GND 3)(Signal)(Signal)(PWR 4)(Signal)(GND 4)说明:1. 外表面作为 GND & PWR层压结构,其表面主要用于扇出和短长度连接。