{"product_id":"dual-alloy-rosin-core-solder-wire-sn63-pb37-0-8mm","title":"Dual-Alloy Rosin-Core Solder Wire  Sn63\/Pb37 0.8mm","description":"\u003cp\u003e\u003cstrong\u003ePrecision solder for DCC decoder installations, small PCB connections and delicate model railway electronics.\u003c\/strong\u003e This 0.8 mm Sn63\/Pb37 rosin-core solder wire contains 63% tin and 37% lead, with a eutectic melting point of approximately 183°C.\u003c\/p\u003e\n\u003ch2\u003eWhy choose Sn63\/Pb37?\u003c\/h2\u003e\n\u003cp\u003eUnlike 60\/40 solder, Sn63\/Pb37 changes directly between liquid and solid at approximately 183°C, without a pasty temperature range. This helps reduce the risk of disturbing a joint as it cools—particularly useful when working on small decoder wires, circuit boards and fragile electrical connections.\u003c\/p\u003e\n\u003ch2\u003eBest uses for model railway enthusiasts\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDCC decoder fitting:\u003c\/strong\u003e joining fine decoder wires to compatible locomotive wiring and solder pads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCB repairs:\u003c\/strong\u003e small electronic connections and careful rework on suitable boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED and lighting installations:\u003c\/strong\u003e fine wire and component connections where movement during cooling is undesirable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocomotive servicing:\u003c\/strong\u003e motor, pickup and lighting connections requiring controlled soldering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSn63\/Pb37 alloy (63% tin, 37% lead)\u003c\/li\u003e\n\u003cli\u003eEutectic melting point: approximately 183°C\u003c\/li\u003e\n\u003cli\u003e0.8 mm diameter rosin-core wire\u003c\/li\u003e\n\u003cli\u003eOne 50g spool\u003c\/li\u003e\n\u003cli\u003eSuitable for precision electronics and general hobby wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e63\/37 or 60\/40?\u003c\/h2\u003e\n\u003cp\u003eChoose \u003cstrong\u003eSn63\/Pb37\u003c\/strong\u003e when clean, predictable solidification is especially useful, such as decoder installations and small PCB connections. \u003cstrong\u003eSn60\/Pb40\u003c\/strong\u003e is a cost-effective general-purpose alternative for track feeders, bus wiring and everyday workshop jobs. A finer solder diameter may be easier for very small surface-mount pads.\u003c\/p\u003e\n\u003ch2\u003eModel railway soldering tips\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eClean and prepare the metal surfaces before soldering.\u003c\/li\u003e\n\u003cli\u003eUse a temperature-controlled iron and an appropriately sized tip; apply additional electronics-grade flux only if needed.\u003c\/li\u003e\n\u003cli\u003eHeat the connection and feed solder into the joint, using only enough to make a sound connection.\u003c\/li\u003e\n\u003cli\u003eHold wires and components still until the solder has solidified.\u003c\/li\u003e\n\u003cli\u003eAvoid prolonged heating near plastic sleepers, decoder components and insulation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eKeep solder away from the running faces of model railway rails. On larger layouts, allow for appropriate track expansion rather than soldering every rail joint.\u003c\/p\u003e\n\u003ch2\u003eLead and flux safety\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eContains lead.\u003c\/strong\u003e Use effective local fume extraction or suitable ventilation; avoid inhaling flux fumes and wash hands after handling. Keep away from food, children and pets. Do not use for potable-water plumbing or applications requiring lead-free solder. Follow applicable safety instructions.\u003c\/p\u003e","brand":"Hobby Trax","offers":[{"title":"Default Title","offer_id":59944126382412,"sku":"8323-0565-F14","price":12.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1001\/4428\/3980\/files\/dual-alloy-rosin-core-solder-wire-set-08mm_70ae4ca9-d02a-4060-b8e9-a2385ee4d30c.jpg?v=1786444382","url":"https:\/\/hobbytrax.com.au\/products\/dual-alloy-rosin-core-solder-wire-sn63-pb37-0-8mm","provider":"Hobby Trax Australia","version":"1.0","type":"link"}