{"product_id":"antminer-s21xp-hashboard-thermal-grease-mold-stencil-asic-chip","title":"Antminer S21XP Thermal Grease Mold – 3-Piece Plastic Stencil for Hashboard","description":"\u003ch2\u003eAntminer S21XP Hash Board Thermal Grease Mold – 3-Piece Engineering Plastic Stencil for ASIC Chip Heat Dissipation\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAntminer S21XP thermal grease mold\u003c\/strong\u003e is designed specifically for the \u003cstrong\u003eBitmain S21XP\u003c\/strong\u003e miner and is a core auxiliary tool for ASIC chip heat-dissipation maintenance. Built around the S21XP's \u003cstrong\u003eultra-high hash density\u003c\/strong\u003e, the mold solves the bench-side pain points of uneven grease application and uncontrolled thickness — the two issues that cause chip-to-heatsink heat-transfer failures and force premature shutdowns. The mold uses a \u003cstrong\u003ethree-piece design (Left, Right, BOT)\u003c\/strong\u003e, molded in one piece from \u003cstrong\u003eanti-static, high-temperature-resistant engineering plastic\u003c\/strong\u003e, with apertures that perfectly fit the S21XP hashboard chip array. Available as \u003cstrong\u003eLeft + Right stencil, BOT stencil, or the Full Kit\u003c\/strong\u003e, and offered in \u003cstrong\u003etwo hashboard versions: A3HB70501 and A3HB70503\u003c\/strong\u003e — select the version that matches your hashboard before ordering.\u003c\/p\u003e\n\u003ch3\u003eThree-Piece Design — Left, Right \u0026amp; BOT\u003c\/h3\u003e\n\u003cp\u003eThe S21XP hashboard ASIC array splits into three distinct regions, and a single one-size mold rarely aligns cleanly across all of them. This mold addresses that geometry with \u003cstrong\u003ethree matched pieces\u003c\/strong\u003e: the \u003cstrong\u003eLeft and Right molds\u003c\/strong\u003e handle the side chip arrays, and the \u003cstrong\u003eBOT mold\u003c\/strong\u003e covers the bottom chip array. Each piece is shaped to its own footprint so the apertures sit exactly over the chips they are meant to grease. The Full Kit gives complete hashboard coverage; the Left + Right or BOT options let a repair shop replace only the piece it actually uses on a given workflow.\u003c\/p\u003e\n\u003ch3\u003eWhy a Dedicated Mold for the S21XP's Ultra-High Hash Density\u003c\/h3\u003e\n\u003cp\u003eManual thermal grease application onto an S21XP hashboard is the single biggest source of post-repair temperature variance: too thick on one chip, too thin on the next, smears bridging onto neighbouring components. At S21XP densities, even small thickness errors translate into measurable hash-rate decay or thermal-shutdown events. The mold enforces a \u003cstrong\u003econtrolled, uniform grease layer in a single pull\u003c\/strong\u003e, eliminating air-bubble residue under the chip and producing a flat, repeatable thermal interface across the entire array — which is what keeps the miner stable for 24\/7 continuous operation.\u003c\/p\u003e\n\u003ch3\u003eHashboard Version — A3HB70501 or A3HB70503\u003c\/h3\u003e\n\u003cp\u003eThe S21XP ships with \u003cstrong\u003etwo distinct hashboard revisions: A3HB70501 and A3HB70503\u003c\/strong\u003e. Aperture positions on this mold are matched to one revision at a time, not both. \u003cstrong\u003eIdentify your hashboard revision by reading the silkscreen on the board itself\u003c\/strong\u003e, then select the matching variant at checkout. Ordering the wrong version produces misaligned apertures that destroy the whole benefit of a precision mold — if in doubt, photograph the silkscreen and email us before placing the order.\u003c\/p\u003e\n\u003ch3\u003eImportant Notes — Compatibility, Storage \u0026amp; TIM Choice\u003c\/h3\u003e\n\u003cp\u003eThis mold is \u003cstrong\u003ecompatible only with the Antminer S21XP air-cooled hashboard\u003c\/strong\u003e, in the specific revision (A3HB70501 or A3HB70503) you select. It is \u003cstrong\u003enot compatible\u003c\/strong\u003e with the S21XP Hydro, the S21+, the S21 Pro, the S21 or any other miner — chip-pattern and heatsink footprint differ. For best results, pair the mold with a \u003cstrong\u003ehigh-conductivity silicone thermal grease (≥6 W\/m·K is the standard recommendation for dense ASIC hashboards)\u003c\/strong\u003e; an 8 W\/mK silicone gel is the recommended class for this hashboard density. Handle without bending, store flat in a dry, dust-free environment, and clean residual grease off after every session to keep aperture geometry sharp.\u003c\/p\u003e\n\u003ch4\u003e\u003c\/h4\u003e\n\u003ch4\u003eAntminer S21XP Hash Board Thermal Grease Mold Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eProduct\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eHash Board Thermal Grease Mold – Antminer S21XP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eEngineering plastic — anti-static, high-temperature resistant, one-piece molded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eEdge Finish\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eScratch-resistant — safe on chip pins and hashboard circuitry\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eDesign\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003e3-piece set: Left, Right, BOT — each matched to its hashboard section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eStencil Variants\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eLeft + Right stencil \/ BOT stencil \/ Full Kit (all three)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eHashboard Versions\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eA3HB70501 or A3HB70503 — select to match your board before ordering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eCompatibility\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eAntminer S21XP air-cooled hashboard \u003cstrong\u003eonly\u003c\/strong\u003e — not for S21XP Hydro, S21+, S21 Pro, S21 or other models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eApplication\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eControlled-thickness silicone grease deposit on hashboard ASIC chip array\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eRecommended TIM\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eSilicone thermal grease ≥6 W\/m·K (8 W\/mK silicone gel preferred)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eRepair Time Reduction\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003e~80% vs manual grease application (manufacturer claim)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eUse Cases\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eSingle-chip repair, hashboard refurbishment, new-miner commissioning, periodic TIM refresh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eStorage\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eDry, dust-free, lay flat — avoid bending or sharp scratches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eCondition\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eRelated Antminer S21XP Parts \u0026amp; Thermal Tools\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/bitmain-bm1370bc-asic-chip-antminer-s21pro-s21xp-s21hydro\"\u003eBM1370BC ASIC Chip – Antminer S21XP \/ S21 Pro \/ S21+\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/bm1368-asic-tester-antminer-s21xp-s21-t21-hashboard-repair\"\u003eBM1368 ASIC Tester – Antminer S21XP \/ S21 \/ T21\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/dowsil-8w-blue-thermal-gel-1kg-asic-miner-hashboards\"\u003eDOWSIL TC-3080 8W\/mK Blue Thermal Gel 1kg – Recommended TIM\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/antminer-s21pro-thermal-paste-precision-grease-application-tool-hash-board-asic-chips\"\u003eAntminer S21 Pro Thermal Paste Mold – Sister Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRefurbishing a fleet of S21XP miners or building out a permanent repair bench? \u003ca href=\"mailto:contact@lys-sz.com\"\u003eContact us at contact@lys-sz.com\u003c\/a\u003e for kit pricing, hashboard-revision verification and bulk thermal-grease orders.\u003c\/p\u003e\n\u003cp\u003eWorldwide shipping from our Shenzhen warehouse.\u003c\/p\u003e","brand":"LYS Shenzhen","offers":[{"title":"A3HB70501 \/ Left + Right stencil","offer_id":45501372793011,"sku":null,"price":94.0,"currency_code":"USD","in_stock":true},{"title":"A3HB70501 \/ BOT Stencil","offer_id":45501372825779,"sku":null,"price":54.0,"currency_code":"USD","in_stock":true},{"title":"A3HB70501 \/ Full kit (Left+Right+BOT Stencil)","offer_id":45501372858547,"sku":null,"price":154.0,"currency_code":"USD","in_stock":true},{"title":"A3HB70503 \/ Left + Right stencil","offer_id":45501372891315,"sku":null,"price":94.0,"currency_code":"USD","in_stock":true},{"title":"A3HB70503 \/ BOT Stencil","offer_id":45501372924083,"sku":null,"price":54.0,"currency_code":"USD","in_stock":true},{"title":"A3HB70503 \/ Full kit (Left+Right+BOT Stencil)","offer_id":45501372956851,"sku":null,"price":154.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6710\/4179\/files\/antminer-s21xp-thermal-grease-stencil-hashboard-a3hb70503.webp?v=1778564745","url":"https:\/\/lys-sz.com\/products\/antminer-s21xp-hashboard-thermal-grease-mold-stencil-asic-chip","provider":"LYS Shenzhen","version":"1.0","type":"link"}