BM2280AA ASIC IC Chip for Antminer K7 Hashboard
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BM2280AA ASIC Chip | Replacement IC for Antminer K7 Hashboard Repair
The BM2280AA is the hashing ASIC chip used on Antminer K7 hashboards. Each chip is a single point in the long serial chain that runs the length of the hashboard — when one chip fails, the chain reports incomplete and the affected hashboard drops to a low or zero hashrate. Swap the failed chip out, reflow the chain, and the board returns to normal duty.
Direct drop-in replacement — same package, same pinout, same electrical envelope as the chip originally fitted at the factory. Stocked in volume for repair shops servicing K7 fleets and individual miners replacing failed chips at the bench.
When to Replace the BM2280AA
- Hashboard reports low or zero hashrate — chip chain incomplete on one board while other boards run normally.
- Chip count mismatch in the chain scan — diagnostic tool flags the failing position.
- Visible damage on a chip — burnt, cracked, or delaminated package after thermal stress or transient event.
- Single-board failure after a known fault event — short, power surge, or coolant intrusion likely killed one or more chips along the chain.
BM2280AA ASIC Chip Specifications
| Feature | Specification |
|---|---|
| Part Number | BM2280AA |
| Function | Hashing ASIC chip |
| Compatible Miner | Antminer K7 |
| Position | Serial chain across hashboard |
| Replacement Type | Direct drop-in (factory-equivalent) |
| Use Case | Chip-level hashboard repair |
| Condition | New, tested before shipment |
| Stock Status | Available in volume |
FAQ — BM2280AA ASIC Chip
Q: How do I identify which chip in the chain failed?
A: Use an ASIC chip tester or hashboard test fixture that scans the serial chain and reports the position of the first failure. Once the failing position is known, locate that physical chip on the board, desolder, and reball or fit a fresh BM2280AA in its place.
Q: Can I run a K7 hashboard with one fewer chip?
A: No — the chain is serial. A missing or non-responsive chip breaks the signal path to every chip after it on the board, so the whole board falls offline. Replace the failed chip to restore the chain.
Q: Rework profile?
A: Standard hot-air rework with flux paste, preheat the board to 100°C before applying hot air, peak around 320°C with controlled dwell time. A precision tin tool / stencil for the BM2280 footprint makes chip placement repeatable across multiple repairs.
Q: Bulk pricing for repair shops?
A: Yes — email contact@lys-sz.com for volume pricing on BM2280AA chip stock and matched tin tool / stencil kits.
Related products
- BM2280AA Chip Tin Tool / Fixture
- BM2042AA ASIC Chip (Antminer K7)
- BM2042AA Tin Fixture (Antminer K7)
- K8pro ASIC Hashboard Tester
K7 fleet operators stocking BM2280AA chips by the tray? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.
Shipping & Customs
🇺🇸🇪🇺 USA & European Union (DDP):
Orders are delivered DDP (Delivered Duty Paid). All customs duties, import taxes, and fees are included — no additional charges on delivery.
🌍 Rest of world:
Orders ship from China. Depending on your country, local customs authorities may apply import duties or taxes. Any such fees are set by your local authorities and are not included in the product price.
Buying in bulk for a mining farm or repair shop?
Get dedicated B2B pricing on this part and across our full catalog — quote response within 24 hours, payment by T/T USD bank wire, and DDP delivery available for US & EU customers (and other lanes on request).
