{"id":25619,"date":"2026-05-18T14:40:47","date_gmt":"2026-05-18T06:40:47","guid":{"rendered":"https:\/\/www.bestpcbs.com\/blog\/?p=25619"},"modified":"2026-05-18T15:41:37","modified_gmt":"2026-05-18T07:41:37","slug":"pcb-fabrication-faq","status":"publish","type":"post","link":"https:\/\/www.bestpcbs.com\/blog\/2026\/05\/pcb-fabrication-faq\/","title":{"rendered":"PCB Fabrication FAQ"},"content":{"rendered":"
<\/div>\n
\"PCB<\/a><\/figure>\n\n\n
\n

PCB Fabrication<\/h3>\n
\n
1. What is the producible copper thickness range for your PCB boards? +<\/span><\/div>\n
\n We support a finished copper thickness range from 1\/2oz (18\u00b5m) minimum to 30oz (1050\u00b5m) maximum, for both inner and outer layers of heavy copper PCBs.\n <\/div>\n<\/p><\/div>\n
\n
2. What is the maximum number of PCB layers you can manufacture? +<\/span><\/div>\n
\n We can manufacture PCBs with up to 32 layers, meeting the needs of high-complexity industrial and electronic designs.\n <\/div>\n<\/p><\/div>\n
\n
3. What is the maximum PCB panel size you can produce? +<\/span><\/div>\n
\n The maximum producible PCB panel size is 610mm x 610mm.\n <\/div>\n<\/p><\/div>\n
\n
4. What is the producible finished board thickness range and tolerance? +<\/span><\/div>\n
\n
    \n
  • Minimum finished board thickness: 0.15mm for 1-2 layer PCBs, 0.38mm for 4-layer PCBs<\/li>\n
  • Board thickness tolerance: \u00b10.1mm for board thickness <1.0mm; \u00b110% of board thickness for board thickness \u22651.0mm<\/li>\n
  • Note: The final finished board thickness includes copper thickness.<\/li>\n<\/ul><\/div>\n<\/p><\/div>\n
    \n
    5. What is the minimum drill hole size you can produce? +<\/span><\/div>\n
    \n The minimum producible mechanical drill hole size is 0.1mm for standard PCB designs.\n <\/div>\n<\/p><\/div>\n
    \n
    6. What PCB laminate brands do you commonly use? +<\/span><\/div>\n
    \n We use industry-leading PCB laminate brands including Shengyi, KB, ITEQ, and GDM, ensuring stable material quality and performance.\n <\/div>\n<\/p><\/div>\n
    \n
    7. What is Tg value in PCB materials, and what Tg values can you produce? +<\/span><\/div>\n
    \n Tg (Glass Transition Temperature) is the temperature at which the PCB laminate transitions from a rigid glassy state to a flexible rubbery state, a key parameter for high-temperature applications.
    \n We commonly produce boards with Tg130, Tg150, and Tg\u2265170, and can support high-Tg boards up to Tg260 for special high-temperature requirements.\n <\/div>\n<\/p><\/div>\n
    \n
    8. What is the flame retardant rating of your PCB boards? +<\/span><\/div>\n
    \n Our standard FR4 PCB boards meet the UL94 V-0 flame retardant rating, the highest standard for commercial PCB materials.\n <\/div>\n<\/p><\/div>\n
    \n
    9. What is solder mask, and what solder mask colors are available? +<\/span><\/div>\n
    \n Solder mask is a protective layer applied to the PCB surface to prevent solder bridging on non-pad areas, protect copper traces from oxidation, and provide electrical insulation.
    \n Available solder mask colors: Green, Blue, Black, Red, White, Yellow, Purple.\n <\/div>\n<\/p><\/div>\n
    \n
    10. What silk screen (legend) colors are available? +<\/span><\/div>\n
    \n Available silk screen (legend) colors: Green, Blue, Black, Red, White, Yellow, Purple, with white being the most commonly used for standard PCB designs.\n <\/div>\n<\/p><\/div>\n
    \n
    11. What is the difference between single-ended impedance and differential impedance? +<\/span><\/div>\n
    \n
      \n
    • Single-ended impedance: Impedance control for a single transmission line, referenced to a ground plane, typically used for single-ended signal transmission.<\/li>\n
    • Differential impedance: Impedance control for a pair of complementary transmission lines, referenced to each other, typically used for high-speed differential signal transmission (e.g., USB, HDMI, Ethernet) to improve noise immunity and signal integrity.<\/li>\n<\/ul><\/div>\n<\/p><\/div>\n
      \n
      12. What design file formats do you support for PCB manufacturing? +<\/span><\/div>\n
      \n We support standard PCB design file formats including Gerber RS-274X, ODB++, and native CAD files from Altium Designer, KiCad, and other mainstream EDA software. We can also generate Gerber files from your original design drawings upon request.\n <\/div>\n<\/p><\/div>\n
      \n
      13. Do you have your own PCB manufacturing factory, or are you an OEM? +<\/span><\/div>\n
      \n We own and operate our own PCB manufacturing factory with full in-house production capabilities from PCB fabrication to assembly, ensuring full control over production quality, lead time, and cost. We also provide OEM services for customized PCB and PCBA projects.\n <\/div>\n<\/p><\/div>\n
      \n
      14. What is your PCB manufacturing quality control process? +<\/span><\/div>\n
      \n We implement a full-process quality control system including incoming material inspection, in-process inspection for each production step, AOI (Automated Optical Inspection), electrical testing, and final visual inspection before shipment. All production processes comply with IPC international standards.\n <\/div>\n<\/p><\/div>\n
      \n
      15. Can you produce PCBs meeting IPC Class 3 standards? What is the price difference from IPC Class 2? +<\/span><\/div>\n
      \n Yes, we can manufacture PCBs fully compliant with IPC Class 3 standards for high-reliability aerospace, medical, and industrial applications.
      \n The price for IPC Class 3 PCBs is typically 15%-30% higher than IPC Class 2, due to stricter production tolerances, more rigorous inspection processes, and lower production yield.\n <\/div>\n<\/p><\/div>\n
      \n
      16. Can you provide PCB mechanical structure layer design services? +<\/span><\/div>\n
      \n Yes, our engineering team can provide PCB mechanical structure layer design services, including board outline design, mounting hole layout, keep-out area definition, and 3D model matching for your enclosure design.\n <\/div>\n<\/p><\/div>\n
      \n
      17. What payment methods do you support? Do you offer monthly credit terms? +<\/span><\/div>\n
      \n We support multiple payment methods including T\/T bank transfer, PayPal, Western Union, and credit card payments.
      \n Monthly credit terms are available for long-term cooperative customers with stable order volume, subject to credit review and approval.\n <\/div>\n<\/p><\/div>\n
      \n
      18. Can you provide a detailed production schedule for my PCB order? +<\/span><\/div>\n
      \n Yes, we provide a detailed step-by-step production schedule for every order, including expected completion time for each production process, inspection stages, and final shipment date. We also provide real-time production progress updates upon request.\n <\/div>\n<\/p><\/div>\n<\/p><\/div>","protected":false},"excerpt":{"rendered":"

      PCB Fabrication 1. What is the producible copper thickness range for your PCB boards? + We support a finished copper thickness range from 1\/2oz (18\u00b5m) minimum to 30oz (1050\u00b5m) maximum, for both inner and outer layers of heavy copper PCBs. 2. What is the maximum number of PCB layers you can manufacture? + We can […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[5694],"tags":[],"class_list":["post-25619","post","type-post","status-publish","format-standard","hentry","category-technical-faqs"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t