PCB工程常用英语（公差方面的表达）
发布时间：2018-8-29 15:30
发布者：JLC3001746585
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1. XXX.的尺寸公差为+/-0.005，这要求是太紧对我们生产，建议公差放松到+/-0.008"。 The tolerance of dimension is specified XXX.+/-0.005" .It is tight for our production .We suggest +/-0.008" instead。 2.在*.pdf文件中要求外形公差为+/-0.005"，建议按IPC 二+/-0.01" 代替。 The profile tolerance is specified +/-0.005" in *.pdf file. We suggest as per IPC class 2，that is to say, it is +/-0.01". 3. 在叠层图中要求板厚公差为+/-0.007"，而notes 1中要求板厚公差为+/-0.005"，他们是不同的，建议0.062"+/-0.007"是可接受的，因为+/-0.005"对我们来说太难控制了。 The tolerance of the board thickness is specified +/-0.007" in layup detail which is different form NOTES 1 +/-0.005".We suggest 0.062"+/-0.007" is acceptable for +/-0.005" is very tough for us to control. 4.外形公差要求+/-0.1mm，这超出了我们生产，建议按+/-0.2mm 控制。 The tolerance of the outline is specified +/-0.1mm.It's above us. We suggest +/-0.2mm instead. 5. v-cut留厚公差为+/-0.06mm上下偏移公差为+/-0.05mm，这两个公差都太紧， 建议两个公差都按+/-0.1mm控制。 The remain tolerance of v-cut is specified +/-0.06mm and offset tolerance is +/-0.05mm. they are too tight for us,we suggest both tolerance are +/-0.1mm instead. 6.孔位公差为0.05mm，这是太紧对我们，建议用+/-0.076mm替代。 The tolerance of the hole position is specified 0.05mm. It's too tight for us, We suggest +/-0.076mm instead. 7. 角度公差为+/-0.5mm，这是太紧对我们，v-cut角度我们将控制在30+/-5 度。 The tolerance of angle is +/-0.5 degree ,it is tight for us , we would like to control the angle of v-cut within 30+/-5 degree. 8.在1MB5476-01.pdf文件中要求孔到板中心的公差是+/-0.05mm，这是太紧对我 们，建议安IPC二级。 It is special that the tolerance of the hole to board center is +/-0.05mm in the 1MB5476-01.pdf file,it is too tight for us ,we suggest as per IPC class 2 . 9.要求线宽和线间距公差为+/-0.03，这是太紧对我们，请确认放松到+/-20%。 It stated that conductor width and spacing shall be within +/-0.03(0.001) of gerber data , it is tight for us , we would like to relax to +/-20%.Pls confirm. 10.Φ3.0的孔径公差要求+0.05mm，这太紧对我们，请确认放松到+0.1/-0mm。 The tolerance of the holes with diameter 3.0mm is required to control within +0.05mm ,it is tight for us , we would like to relax to +0.1/-0mm.Pls confirm. PCB下单网址：www.sz-jlc.com/y |
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