{"product_id":"antminer-bm1368pa-bm1368pb-asic-stencil-s21-t21-hydro","title":"BM1368PA BM1368PB ASIC Stencil Plate for Antminer S21 T21 Hydro Hashboard","description":"\u003ch2\u003eAntminer BM1368PA BM1368PB ASIC Stencil Plate | Tin Tool for S21, T21, S21 Hydro Hash Board\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBM1368 ASIC stencil plate\u003c\/strong\u003e is the precision reballing fixture for the \u003cstrong\u003eAntminer S21, T21, S21 Hydro, and S21IMM hashboards\u003c\/strong\u003e. Each of these hashboards hosts \u003cstrong\u003e108 BM1368 ASIC chips arranged in 12 voltage domains of 9 chips each\u003c\/strong\u003e with a \u003cstrong\u003eworking domain voltage of approximately 1.2V\u003c\/strong\u003e. A single S21 or T21 miner runs \u003cstrong\u003e324 BM1368 chips across 3 hashboards\u003c\/strong\u003e — meaning when chip failures cascade in a fleet, a fast reballing fixture pays for itself in hours.\u003c\/p\u003e\n\u003cp\u003eThe stencil is \u003cstrong\u003eCNC-laser drilled\u003c\/strong\u003e with \u003cstrong\u003eburr-free tin-plated holes\u003c\/strong\u003e for pin-perfect alignment on the BM1368 BGA pad layout. The high-temperature composite construction handles direct reflow heating without warping, and a single stencil works across the \u003cstrong\u003eentire BM1368 series — PA, PB, PV, PM, and AA variants\u003c\/strong\u003e — so repair benches don't need a separate fixture per chip revision.\u003c\/p\u003e\n\u003ch3\u003eWhere the BM1368 Stencil Fits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDomain-level repair\u003c\/strong\u003e on Antminer S21 \/ T21 \/ S21 Hydro \/ S21IMM — reball the 9 chips in a failed voltage domain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS21 Hydro and S21XP Hydro\u003c\/strong\u003e — same BM1368 chip family, same stencil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS21IMM (immersion variant)\u003c\/strong\u003e — same chip + footprint as air-cooled S21.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-variant repair benches\u003c\/strong\u003e — one stencil covers PA, PB, PV, PM, and AA chip silkscreens.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip-level recovery\u003c\/strong\u003e — recover salvageable BM1368 chips from failed boards for reuse.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConstruction and Manufacturing\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC laser-drilled holes\u003c\/strong\u003e — burr-free, dimensionally consistent across the full pad array.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTin-plated mesh\u003c\/strong\u003e — clean solder paste release with minimal residue.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-temp composite + tin-steel mesh\u003c\/strong\u003e — survives standard SAC305 reflow profiles without warping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1:1 OEM-spec BM1368 BGA pitch alignment\u003c\/strong\u003e — matches Antminer S21 \/ T21 \/ S21 Hydro footprint.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStencil plate only\u003c\/strong\u003e — chip holder sold separately.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eBM1368 Stencil Plate Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Miners\u003c\/td\u003e\n\u003ctd\u003eAntminer S21, T21, S21 Hydro, S21IMM, S21XP Hydro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChip Compatibility\u003c\/td\u003e\n\u003ctd\u003eBM1368PA, PB, PV, PM, AA (full series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChips per Hashboard\u003c\/td\u003e\n\u003ctd\u003e108 (12 domains × 9 chips)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Domain Voltage\u003c\/td\u003e\n\u003ctd\u003e~1.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-Temp Composite + Tin-Steel Mesh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturing\u003c\/td\u003e\n\u003ctd\u003eCNC laser-drilled, zero burrs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Components\u003c\/td\u003e\n\u003ctd\u003eStencil plate only (no holder)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Application\u003c\/td\u003e\n\u003ctd\u003eASIC chip reballing \u0026amp; solder repair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eFAQ — BM1368 Stencil Plate\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this stencil work on S21 Pro \/ S21+ \/ S21XP miners?\u003c\/strong\u003e\u003cbr\u003eA: No — S21 Pro \/ S21+ \/ S21XP use the newer BM1370 series chip (BB \/ BC \/ AA \/ PA \/ PB variants), which has a different BGA footprint. For BM1370 reballing you need the BM1370 stencil. The BM1368 stencil is specifically for S21, T21, S21 Hydro, S21IMM, and S21XP Hydro.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many BM1368 chips per S21 \/ T21 hashboard?\u003c\/strong\u003e\u003cbr\u003eA: 108 chips per hashboard, arranged in 12 voltage domains of 9 ASICs each. The full S21 or T21 miner runs 324 BM1368 chips across 3 hashboards. Working domain voltage is approximately 1.2V.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need a separate stencil for PA, PB, PV, PM, and AA chips?\u003c\/strong\u003e\u003cbr\u003eA: No — all BM1368 variants share the same BGA footprint. One stencil covers the full series, which simplifies repair-bench inventory.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What rework profile do you recommend?\u003c\/strong\u003e\u003cbr\u003eA: Standard BGA reflow — preheat the board to 100-150°C, ramp to peak around 240-250°C, hold for 30-60 seconds, controlled cooling. Use flux paste and clean residue with isopropyl alcohol before placing the reballed chip.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Bulk pricing for repair shops?\u003c\/strong\u003e\u003cbr\u003eA: Yes — email contact@lys-sz.com for volume pricing on stencil + holder kits.\u003c\/p\u003e\n\u003ch3\u003eRelated products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/antminer-bm1368pa-bm1368pb-asic-chip-tin-tool-s21-t21-hydro\"\u003eAntminer BM1368PA \/ PB Tin Tool (S21 \/ T21 Hydro)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/bm1368pb-crypto-miner-asic-chip-antminer-s21-t21-s21hyd-hashboard-repair\"\u003eBM1368PB ASIC Chip (Antminer S21 \/ T21)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/bm1368aa-asic-chip-antminer-s21-t21-s21hyd-crypto-miner-hashboard-repair\"\u003eBM1368AA ASIC Chip (Antminer S21 \/ T21)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/antminer-s21-control-board-amlogic-a113d-ctrl-c76\"\u003eAntminer S21 \/ T21 Control Board\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRepair benches rebuilding Antminer S21 \/ T21 \/ S21 Hydro hashboards in volume? Email \u003ca href=\"mailto:contact@lys-sz.com\"\u003econtact@lys-sz.com\u003c\/a\u003e for bulk stencil + holder pricing. Worldwide shipping from our Shenzhen warehouse.\u003c\/p\u003e","brand":"LYS Shenzhen","offers":[{"title":"Single ASIC Stencil","offer_id":44657642307763,"sku":null,"price":4.5,"currency_code":"USD","in_stock":true},{"title":"4-in-1 ASIC Stencil","offer_id":44657642340531,"sku":null,"price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6710\/4179\/files\/Antminer-BM1368PA-BM1368PB-BM1368-ASIC-Stencil-Plate-Precision-Tin-Tool-S21-T21-Hydro-Hash-Board.webp?v=1746170701","url":"https:\/\/lys-sz.com\/products\/antminer-bm1368pa-bm1368pb-asic-stencil-s21-t21-hydro","provider":"LYS Shenzhen","version":"1.0","type":"link"}