STAR.I TECHNOLOGY KnowledgeSelection and process guides for lead-free solder, solder paste, bars, wire and electronic chemicals.https://www.szxzd.com/enExcess Dross in Lead-Free Wave Soldering: Causes and Controlhttps://www.szxzd.com/en/knowledge/wave-soldering-dross/https://www.szxzd.com/en/knowledge/wave-soldering-dross/Analyse dross in lead-free wave soldering: pot temperature, flux, alloy, impurities, equipment and operation, plus high-antioxidant and high-temperature bar selection.Thu, 15 Oct 2026 00:00:00 GMTTroubleshootinginfo@szxzd.comHow to Choose a Flux: R vs RMA vs RA, No-Clean and Water-Solublehttps://www.szxzd.com/en/knowledge/flux-selection/https://www.szxzd.com/en/knowledge/flux-selection/Choose flux by activity level, cleaning method, solids content and process fit for wave, hand and SMT soldering, with key indicators, common mistakes and a validation checklist.Mon, 12 Oct 2026 00:00:00 GMTSelection guideinfo@szxzd.comSolder Wire Selection: Diameter, Flux Type and Core Counthttps://www.szxzd.com/en/knowledge/solder-wire-selection/https://www.szxzd.com/en/knowledge/solder-wire-selection/Choose solder wire by alloy, flux type, single/three-core construction and diameter. Includes 0.3–1.2 mm diameter guidance and practical hand-soldering recommendations.Thu, 08 Oct 2026 00:00:00 GMTSelection guideinfo@szxzd.comSolder Bar & Pot Maintenance: Pure Tin Addition and Dross Controlhttps://www.szxzd.com/en/knowledge/solder-bar-pot-maintenance/https://www.szxzd.com/en/knowledge/solder-bar-pot-maintenance/Why tin content drops in a solder pot, how to calculate pure tin additions with T = W × (A − B) ÷ (100 − A), and how to control dross with high-antioxidant and high-temperature solder bars.Fri, 02 Oct 2026 00:00:00 GMTEquipment maintenanceinfo@szxzd.comSolder Paste Printing & Reflow Defects: Causes and Solutionshttps://www.szxzd.com/en/knowledge/solder-paste-defects/https://www.szxzd.com/en/knowledge/solder-paste-defects/Troubleshooting guide for solder paste defects: incomplete release, slumping, solder balls, bridging, tombstoning, insufficient solder, voids and dull joints.Fri, 25 Sep 2026 00:00:00 GMTTroubleshootinginfo@szxzd.comHow to Choose a Lead-Free Solder Alloy: SAC305 vs Sn-Cu vs Sn-Cu-Ni-Cehttps://www.szxzd.com/en/knowledge/lead-free-alloy-selection/https://www.szxzd.com/en/knowledge/lead-free-alloy-selection/Compare SAC305, Sn-Cu0.7, Sn-Cu-Ni-Ce and low-temperature alloys by process, melting point, wetting, reliability and cost, with selection guidance.Fri, 18 Sep 2026 00:00:00 GMTSelection guideinfo@szxzd.com