SURFACE MOUNT PROCESS
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  • Articles
    • A GUIDE TO EFFECTIVE STENCIL DESIGN
    • SOLDER PASTE PRINTING PROCESS
    • SOLDER PASTE INSPECTION PROCESS
    • COMPONENT PLACEMENT PROCESS
    • REFLOW SOLDERING PROCESS
    • POST-REFLOW AOI PROCESS
    • THROUGH-HOLE ASSEMBLY - SELECTIVE SOLDERING
    • Cleaning 'No-Clean' flux residues and other contaminants
    • Environmental Protection - Conformal Coating
    • Hand soldering and rework of surface mount components to IPC class 3
  • FAQ
    • Solder paste handling
    • Type 3 or Type 4 Solder Paste
    • Cleaning a misprinted PCB
    • Solder Paste Quality Control
    • What factors affect solder paste transfer efficiency
    • What stencil thickness should be used?
    • What is the difference between aspect ratio and area ratio of stencil apertures?
    • What squeegee speed should be used?
    • What squeegee pressure should be used?
    • What the differences between 'on-contact' printing and 'gap' printing?
    • What separation speed to use in solder paste printing?
    • What are the benefits / challenges of using halogen-free solder paste?
    • What is the best stencil aperture shape for solder paste transfer efficiency?
    • PCB delamination during reflow
    • What are the different types of reflow profile?
    • ROSE (Resistivity of Solvent Extract) testing
    • How do you validate a PCBA cleaning process?
    • Why clean a pcba that has been soldered using no-clean flux
    • How do engineered cleaning fluids such as Zestron and Kyzen work
    • How do engineered cleaning fluids affect surface tension and wetting angle?
    • How does the pH level affect engineered cleaning fluids?
    • How do mixed-bed and carbon filters work in PCB cleaning systems?
    • What are the risks of using ultrasonics to clean PCBA's?
    • What are the differences between 'Water-soluble' and 'No-clean' flux?
    • What is the difference between ionic and non-ionic contamination?
    • What causes electrochemical migration (ECM)?
    • What are methods of masking before conformal coating?
    • How to apply conformal coating by brushing?
    • How to apply conformal coating using dipping?
    • How to apply conformal coating using spray/aerosol?
    • How do selective robots apply conformal coating?
    • What is the best method to dry/cure conformal coating?
    • What concerns are there when demasking?
    • What should be checked when inspecting after conformal coating?
    • How to check the adhesion of conformal coating?
    • Tape and Reel Packaging Standards
    • What is 'Package on Package' (POP)?
    • Stock control and component attrition
    • BOM Comparison Software
    • Comparison of SAC305 and SAC387 Lead-Free Solder Alloys
    • What is a 'Eutectic' solder alloy?
    • What does 'SMT' stand for?
    • What does the term voiding mean?
    • How is void percentage calculated?
    • How to reduce voids in QFN device ground connection?
    • Low temperature lead free solder paste
    • CAD EXTRACTION
    • How are PCB's manufactured?
    • What are the IPC standards that govern electronics manufacturing processes?
    • What are the differences between SMEMA and HERMES?
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PCBONLINE is a one-stop advanced PCB manufacturer and assembler, working since 1999.
Our service range:
  • All customized PCB
  • Electronic components purchase service
  • BOM quote service
  • PCB layout/ design
Why to choose PCB ONLINE LIMITED
  • Factory was set up in 1999, having 100+ experienced engineers, 1500+technicians
  • Fast delivery (2 layer PCB can be delivered within 6 hours)
  • Fair Transparent Pricing, bulk orders enjoy discount, new users enjoy 100$ off coupons
  • Advanced online quotation system, saving your time and energy
  • Provide 1 to 1 service for you
Certification:
ISO 9001, IATF 16949:2016, REACH, RoHS, and UL certificates
Don’t hesitate to get a quotation from us: [email protected]

Products & services
  • PCB Prototype
  • HDI PCB
  • Flexible PCB
  • High-TG PCB
  • Multilayer PCB
  • Halogen-Free PCB
  • Ceramic PCB
  • Carbon Nanotube PCB
  • Rigid-Flex PCB
  • High Frequency PCB
  • Thick-Copper PCB
  • Lead-Free PCB
  • LED PCB
  • Aluminum PCB
  • Carbon PCB
  • PCB MaterialPCBA Process
  • Prototype PCB Assembly
  • Low Volume PCB Assembly
  • High Volume PCB Assembly
  • Consigned PCB Assembly
  • SMT Stencil
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