{"product_id":"951-flux-pen-10ml-no-clean-rosin-pcb-soldering-smd","title":"951 Flux Pen 10ml — Low-Solid No-Clean Rosin, PCB Soldering \u0026 Rework, SMD \u0026 Through-Hole","description":"\u003ch2\u003e951 Flux Pen — 10ml No-Clean Low-Solid Rosin\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003e951 Flux Pen\u003c\/strong\u003e is a \u003cstrong\u003elow-solid, no-clean rosin flux\u003c\/strong\u003e in a convenient pen applicator, ideal for \u003cstrong\u003ePCB soldering, SMD rework, and through-hole repair\u003c\/strong\u003e. The fine tip delivers precise flux application exactly where needed — no mess, no waste. The no-clean formula leaves minimal residue that is non-corrosive and non-conductive, so cleaning is optional for most applications.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e10ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlux Type\u003c\/td\u003e\n\u003ctd\u003eLow-solid rosin (no-clean)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResidue\u003c\/td\u003e\n\u003ctd\u003eMinimal, non-corrosive, non-conductive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCleaning Required\u003c\/td\u003e\n\u003ctd\u003eNo (optional for cosmetic purposes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplicator\u003c\/td\u003e\n\u003ctd\u003ePen with fine tip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActivation Temperature\u003c\/td\u003e\n\u003ctd\u003e~183°C (solder melting point)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHalide Content\u003c\/td\u003e\n\u003ctd\u003eHalide-free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Solders\u003c\/td\u003e\n\u003ctd\u003eSn63\/Pb37, SAC305, Sn99.3\/Cu0.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose 951 Flux Pen?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eNo-clean formula\u003c\/strong\u003e — residue is non-corrosive and non-conductive, no cleaning needed\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003ePen applicator\u003c\/strong\u003e — precise tip application, no brush or syringe needed\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eLow-solid content\u003c\/strong\u003e — minimal residue for clean, professional-looking solder joints\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eHalide-free\u003c\/strong\u003e — safe for sensitive components and gold-plated contacts\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eWorks with all solder types\u003c\/strong\u003e — leaded, lead-free, and silver-bearing solders\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eCompatible With \/ Works With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSMD component soldering (0402, 0603, 0805, SOT-23, SOP, QFP packages)\u003c\/li\u003e\n\u003cli\u003eThrough-hole component soldering and repair\u003c\/li\u003e\n\u003cli\u003eBGA rework (apply to pads before reflow)\u003c\/li\u003e\n\u003cli\u003eWire tinning and connector soldering\u003c\/li\u003e\n\u003cli\u003eAll soldering irons and hot air rework stations\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSMD Soldering\u003c\/strong\u003e — apply to pads before placing and soldering SMD components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCB Rework\u003c\/strong\u003e — reflow cold joints and improve solder flow on existing joints\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThrough-Hole Repair\u003c\/strong\u003e — improve solder wetting on oxidized through-hole pads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire Tinning\u003c\/strong\u003e — tin stranded wire ends for reliable solder connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Soldering\u003c\/strong\u003e — JST, DuPont, USB connector pin soldering\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eRemove cap and press tip gently on a surface to saturate the felt tip with flux\u003c\/li\u003e\n\u003cli\u003eApply flux to PCB pads, component leads, or wire ends\u003c\/li\u003e\n\u003cli\u003eSolder immediately while flux is active\u003c\/li\u003e\n\u003cli\u003eResidue can be left (no-clean) or removed with IPA (isopropyl alcohol) for cosmetic finish\u003c\/li\u003e\n\u003cli\u003eReplace cap after use to prevent evaporation\u003c\/li\u003e\n\u003c\/ol\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Does 951 flux pen residue need to be cleaned?\u003c\/strong\u003e\u003cbr\u003eA: No. The no-clean formula leaves a non-corrosive, non-conductive residue safe to leave on the PCB. For cosmetic purposes or conformal coating adhesion, clean with 99% isopropyl alcohol (IPA) and a brush.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is 951 flux compatible with lead-free solder?\u003c\/strong\u003e\u003cbr\u003eA: Yes. 951 flux activates at standard solder melting temperatures and works with SAC305 (Sn96.5\/Ag3\/Cu0.5) and other lead-free alloys. Increase iron temperature by 20–30°C for lead-free soldering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I prevent the pen tip from drying out?\u003c\/strong\u003e\u003cbr\u003eA: Always replace the cap immediately after use. Store horizontally or tip-down. If the tip dries, press firmly on a surface to re-saturate from the reservoir, or briefly dip the tip in IPA to rehydrate.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1× 951 Flux Pen 10ml — No-Clean Low-Solid Rosin\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991483535595,"sku":"\u003cnone\u003e","price":7.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/951-flux-pen-no-clean-soldering-rosin-pcb-repair.webp?v=1761628117","url":"https:\/\/keszoox.com\/products\/951-flux-pen-10ml-no-clean-rosin-pcb-soldering-smd","provider":"Keszoox","version":"1.0","type":"link"}