BM1387BE Brand New ASIC chip for Antminer S9j Hashboard

BM1387BE Brand New Original ASIC Chip | Bitmain SHA-256 Hashing ASIC for Antminer S9j / T9j / S9j Hydro Hashboard Repair, Surface-Mount SMD Package for Direct Chip-Level Replacement on Legacy S9j Family Mining Rigs

The BM1387BE is the core hashing ASIC chip used in Bitmain's Antminer S9j and T9j series hashboards. When a hashboard loses hash rate or fails chip scanning, one or more defective BM1387BE chips are typically the root cause. This brand new, original-spec Bitmain replacement chip allows repair technicians to restore full hash rate performance without replacing the entire hashboard — saving significant cost on one of the most widely deployed mining platforms in the world.

The S9 family remains a workhorse in low-electricity-cost regions and as a redundancy / fallback platform — keeping these miners productive often comes down to chip-level rework. Each BM1387BE handles SHA-256 hashing as part of the per-domain chip count on the S9j hashboard. Replacement requires standard hot-air rework or reflow station capability + proper stencil and solder paste workflow.

Typical Use in Antminer S9j Family Repair

• Hashrate restoration — replacing dead chips that fail chip-scan during board diagnostics.
• Domain repair — restoring missing power domains caused by single failed chip in series.
• Production refurbishment — bulk BM1387BE inventory for high-volume S9j board rework lines.
• Hydro variant servicing — S9j Hydro boards use identical BM1387BE chips, just different hashboard PCB.
• Hashrate optimization — replacing aged / underperforming chips to restore nameplate hashrate.

BM1387BE Specifications

FAQ — BM1387BE ASIC Chip

Q: How many BM1387BE chips does one S9j hashboard need?
A: Each S9j hashboard carries 63 BM1387BE chips arranged across multiple power domains. When the board reports a missing domain, the failure is typically a single chip in series within that domain. Diagnose the specific failed chip with chip scan tools before ordering replacement quantities.

Q: Can I substitute another BM1387 variant (BM1387, BM1387B)?
A: The BM1387 family shares the same SHA-256 hashing architecture but firmware compatibility varies by suffix letter. For S9j / T9j / S9j Hydro boards, stick with BM1387BE specifically. Other suffix variants are for related S9 series boards.

Q: What rework equipment do I need?
A: Hot-air rework station (~400°C), proper solder paste stencil matched to BM1387BE footprint, lead-free solder paste, anti-static workstation, and chip-scan diagnostic for verification. Stencils and chip-scan testers are sold separately on our catalog.

Q: Bulk pricing for S9 / S9j repair shops?
A: Yes — email contact@lys-sz.com with your monthly S9j board rework volume for tier pricing on BM1387BE stock.

Related products

• Antminer BM2280AA Tin Tool (K7)
• BM1370 Series ASIC Chip Tester
• BM1387 / BM1387B ASIC Chip – Antminer S9
• DMP34M4SPS P-Channel MOSFET – Antminer S11 / S15 / T15

S9j / T9j repair shops stocking BM1387BE by the reel? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouses.