ee:pcbsoldermask
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ee:pcbsoldermask [2022/07/11 16:07] FKR@staff.hsrw |
ee:pcbsoldermask [2022/11/11 13:23] (current) FKR@staff.hsrw |
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| ===== Prerequisites ===== | ===== Prerequisites ===== | ||
| This instruction is about how to apply solder mask to PCBs. It is assumes you already have traces on a PCB (regardless of etched or milled) but **no holes yet**, like <imgref etchedpcb>. | This instruction is about how to apply solder mask to PCBs. It is assumes you already have traces on a PCB (regardless of etched or milled) but **no holes yet**, like <imgref etchedpcb>. | ||
| - | You also need [[pcbuvmasks|artwork]] (black printout to transparent foil) containing only pads (EAGLE layer 17) and vias (layer 18). Make sure it is really dark. We also suggest filling out the holes (you can use a black marker, e.g. [[https://www.amazon.de/gp/product/B01MTT2R3Q/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1|this one]] or [[https://www.amazon.de/gp/product/B0009LZULO/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1|that one]]). The room you are working in has to been protected from of UV lights, e.g. use 05 EG 027. It has special lamps and no windows (avoiding sunlight). | + | You also need [[pcbuvmasks|artwork]] (black printout to transparent foil) containing only pads and vias. You can achieve this by selecting "tStop" (layer 29) or "bStop" (layer 30) for top and bottom respectively. Make sure to select a solid fillstyle (see <imgref layer29>). |
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| + | The room you are working in has to been protected from of UV lights, e.g. use 05 EG 027. It has special lamps and no windows (avoiding sunlight). | ||
| ===== Procedure ===== | ===== Procedure ===== | ||
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| <imgcaption etchedpcb|Etched PCB>{{:ee:sm2_etched_pcb.jpg?200 |}}</imgcaption> | <imgcaption etchedpcb|Etched PCB>{{:ee:sm2_etched_pcb.jpg?200 |}}</imgcaption> | ||
| + | <imgcaption layer29|Layer 29 / Fillstyle setting>{{:ee:sm7_layer29_fillstyle.png?200 |}}</imgcaption> | ||
| <imgcaption laminator|Dry-film laminator>{{:ee:sm6_laminator.jpg?200 |}}</imgcaption> | <imgcaption laminator|Dry-film laminator>{{:ee:sm6_laminator.jpg?200 |}}</imgcaption> | ||
| <imgcaption laminated|Laminated>{{:ee:sm4_laminated.jpg?200 |}}</imgcaption> | <imgcaption laminated|Laminated>{{:ee:sm4_laminated.jpg?200 |}}</imgcaption> | ||
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| - Complete the curing of the solder mask by exposing it further for 20-30 minutes or leaving the PCB at a place with sunlight for a day (<imgref finished>). | - Complete the curing of the solder mask by exposing it further for 20-30 minutes or leaving the PCB at a place with sunlight for a day (<imgref finished>). | ||
| - Go on like in a usual PCB manufacturing process (drill holes, punch via, solder). | - Go on like in a usual PCB manufacturing process (drill holes, punch via, solder). | ||
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| <imgcaption etchedpcb|Etched PCB>{{:ee:sm2_etched_pcb.jpg?200 |}}</imgcaption> | <imgcaption etchedpcb|Etched PCB>{{:ee:sm2_etched_pcb.jpg?200 |}}</imgcaption> | ||
ee/pcbsoldermask.1657548473.txt.gz · Last modified: 2022/07/11 16:07 by FKR@staff.hsrw
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