{"product_id":"wonderway-sn42-bi58-t4-lead-free-solder-paste-no-clean-138-melting-point-20g","title":"Lead-Free Solder Paste, 20g Sn42\/Bi58 T4 No-Clean Low-Temperature Syringe, 138°C Melting Point - Wonderway","description":"\u003cp\u003eLead-free solder paste with a low melting point supports PCB assembly, surface-mount rework and appliance electronics repair with less heat than common high-temperature alloys. This Wonderway syringe contains 20g net of T4 paste made from 42% tin and 58% bismuth with 10.5% flux. The push-style dispenser provides controlled placement on pads and small components.\u003c\/p\u003e\u003cp\u003eThe Sn42\/Bi58 alloy melts at 138°C and is described as no-clean, strongly viscous and capable of forming bright joints. Total packaged weight is listed at 29g. Store and use according to the current temperature and shelf-life instructions, keep surfaces clean and apply only the amount needed. The source lists T4 20g, T4 30g and T5 20g variants, so verify both particle grade and net paste weight before ordering.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: Wonderway\u003c\/li\u003e\n\u003cli\u003eProduct: Lead-free solder paste\u003c\/li\u003e\n\u003cli\u003eDocumented grade: T4\u003c\/li\u003e\n\u003cli\u003eNet paste weight: 20 g\u003c\/li\u003e\n\u003cli\u003eTotal packaged weight: 29 g\u003c\/li\u003e\n\u003cli\u003eAlloy: Sn42\/Bi58\u003c\/li\u003e\n\u003cli\u003eTin content: 42%\u003c\/li\u003e\n\u003cli\u003eBismuth content: 58%\u003c\/li\u003e\n\u003cli\u003eFlux content: 10.5%\u003c\/li\u003e\n\u003cli\u003eMelting point: 138°C\u003c\/li\u003e\n\u003cli\u003eCleaning designation: No-clean\u003c\/li\u003e\n\u003cli\u003eForm: Paste syringe\u003c\/li\u003e\n\u003cli\u003eFeature: Push-style dispenser\u003c\/li\u003e\n\u003cli\u003eUses: PCB IC phone TV and appliance repair\u003c\/li\u003e\n\u003cli\u003eOther variants: T4 30g and T5 20g\u003c\/li\u003e\n\u003cli\u003ePart number: SP-20G-Sn42Bi58\u003c\/li\u003e\n\u003c\/ul\u003e\u003csection class=\"product-faq\"\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"qa\"\u003e\n\u003ch3\u003eWhat alloy is used in this solder paste?\u003c\/h3\u003e\n\u003cp\u003eThe paste uses a lead-free Sn42\/Bi58 alloy with 42% tin and 58% bismuth.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qa\"\u003e\n\u003ch3\u003eWhat is the melting point?\u003c\/h3\u003e\n\u003cp\u003eThe documented alloy melts at 138°C.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qa\"\u003e\n\u003ch3\u003eHow much paste is in the syringe?\u003c\/h3\u003e\n\u003cp\u003eThe selected T4 syringe contains 20g net paste; the total packaged weight is listed as 29g.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qa\"\u003e\n\u003ch3\u003eWhich other paste options are available?\u003c\/h3\u003e\n\u003cp\u003eThe variants include T4 30g and T5 20g in addition to T4 20g.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"My Store","offers":[{"title":"T4 30g","offer_id":64470899097969,"sku":"B0BLSJQPR6","price":42.99,"currency_code":"USD","in_stock":true},{"title":"T5 20g","offer_id":64470899130737,"sku":"B0CBWX7GXW","price":42.99,"currency_code":"USD","in_stock":true},{"title":"T4 20g","offer_id":64470899163505,"sku":"B0BLSKZ6W1","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/7064\/0241\/files\/71oRBtkBdoL._AC_SL1500.jpg?v=1787906774","url":"https:\/\/allkindora.shop\/products\/wonderway-sn42-bi58-t4-lead-free-solder-paste-no-clean-138-melting-point-20g","provider":"All Kindora","version":"1.0","type":"link"}