不是,
外层是贯穿整个PCB厚度两面的的意思,内层多用于多层板中的内部结构层内。与covelay 或covercoat 覆盖不覆盖没关系的。
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Laya Chen 陈燕
Microtek (
Tel: +86 519 5487805
Cell: +86 13115289328
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主题: Re: 答复: [TGA] [***SPAM*** Score/Req: 08.30/05.00]答复: [TGA] 请教专业术语问题
Dear Laya,
对于外层和内层的区别,外层就是没有被Coverlay或Covercoat覆盖的,内层就是被埋在Coverlay或Covercoat里的对吗?
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Marketing Dept.
Suiwa High Technology Electric Industries(Xiamen)Co.Ltd
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Laya Chen
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Subject: 答复:
[TGA] [***SPAM*** Score/Req: 08.30/05.00]答复:
[TGA] 请教专业术语问题
真正从术语翻译角度来讲的话,可能用“外层镀通孔”、“内层镀通孔”和“外层非支撑孔”比较合适,意思还是下面的意思,但是这样讲可能比较不容易产生误解。
External
plated through holes---外层镀通孔,贯穿整个PCB厚度的铜镀孔,可为电路互连用的金属通孔,也可为用于Component
Mounting( 元件安装) 用的金属通孔
Internal
plated through holes---内层镀通孔,即为Buried
Via,即金属导通埋孔,孔内有铜镀层
External
unsupported holes---外层非支撑孔,即为孔内无镀层的元件安装孔(component
mounting holes w/o copper plating through entire PCB)
Best regards!
Best regards,
Laya Chen 陈燕
Microtek (
Tel: +86 519 5487805
Cell: +86 13115289328
Fax: +86 519 5487810
Email: [log in to unmask]