BM1491AA Chip Tin Tool for Antminer L9 – Precision Hash board ASIC Repair Solution
Couldn't load pickup availability
Have questions about this product? Our team is here to help — just reach out on WhatsApp.
💬 Contact Us on WhatsAppAbout the Product
BM1491AA Chip Tinning Tool for Antminer L9 Hashboard Repair
The BM1491AA Chip Tinning Tool is the precision repair stencil used in Antminer L9 hashboard service for tinning and replacing the BM1491AA ASIC chips. The tool combines a sturdy aluminum alloy base and frame with a high-quality steel mesh stencil sized to match the BM1491AA pad pattern — letting the technician lay down a clean, repeatable solder paste pattern before chip reflow.
Anti-static construction protects the chip during alignment and tinning. Wear-resistant and high-temperature-tolerant steel mesh holds its geometry across hundreds of tinning cycles in a busy repair workshop.
Specifications
| Parameter | Value |
|---|---|
| Part number / tool | BM1491AA chip tinning stencil tool |
| Condition | New |
| Compatibility | Antminer L9 hashboard ASIC chips |
| Base / frame material | Aluminum alloy |
| Stencil material | High-quality steel mesh |
| ESD protection | Anti-static design |
| Temperature resistance | High — survives reflow profile cycles |
| Wear resistance | Yes |
| Function | Tinning and replacing ASIC chips |
| Benefit | Improved repair efficiency, durable, repeatable paste lay-down |
Where the BM1491AA stencil fits in the repair workflow
The Antminer L9 hashboard runs the BM1491AA ASIC. When a chip fails, the technician desolders the dead BM1491AA, cleans the pad pattern, drops the stencil over a replacement chip, lays down solder paste through the steel mesh, then reflows the chip onto the board. The aluminum frame holds the chip in 1:1 alignment with the stencil openings, preventing offset paste deposits and bridging.
Compatibility
Specifically sized for the BM1491AA ASIC pad pattern on Antminer L9 hashboards. Do not use on other Bitmain ASIC families — the pad pattern is unique to the L9 generation. For Iceriver KS5L chip stencil work, see the 1004LV100 tinning tool in related products.
Typical repair workflow
- Desolder failed BM1491AA from the L9 hashboard using a hot air rework station
- Clean the pad pattern of residual solder with a wick
- Drop the new BM1491AA chip into the aluminum frame seating area
- Position the steel mesh stencil aligned 1:1 over the chip pads
- Lay down solder paste through the mesh openings with a flat squeegee
- Lift the stencil straight up, then reflow the chip onto the hashboard
Frequently asked questions
Is this for the Antminer L9 only?
Yes — the BM1491AA chip and its pad pattern are specific to the Antminer L9 hashboard.
Is the frame anti-static?
Yes — the aluminum alloy frame is built with anti-static protection to safeguard the chip during alignment and tinning operations.
How long does the stencil last?
The steel mesh holds geometry across hundreds of tinning cycles. Inspect the mesh openings for clogging or wear before each batch.
Do you stock thermal grease for L9 chip reflow?
Yes — HY510 thermal grease for ASIC chip heat transfer is in stock alongside the tinning tool. We also carry tinning stencils for other ASIC chip families.
Related products
- Iceriver KS5L 1004LV100 ASIC Chip Tinning Stencil
- HY510 Thermal Grease for ASIC Chip Heat Dissipation
- Hashboard EEPROM Programming Cable (Antminer / Whatsminer)
- 12MHz SMD Crystal Oscillator for Innosilicon T2 Hashboard
Contact contact@lys-sz.com for volume pricing or compatibility questions.
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).
