Antminer L7 Tin Template for Hashboard Thermal paste application

Antminer L7 Hashboard Stencil | Precision Thermal Paste Application Template for BM1489 ASIC Chips

This Antminer L7 hashboard stencil is a precision-cut metal template designed for applying and scraping thermal paste on BM1489 ASIC chips. It sits directly over the hashboard, exposing only the chip surfaces while masking surrounding SMD components — capacitors, resistors, MOSFETs, and signal traces — that would otherwise collect excess paste. Result: a clean, uniform thermal interface layer on every chip across the board.

The same stencil works in reverse for scraping off old paste — lay it over the board, use a plastic scraper to remove bulk paste without touching exposed components. Cuts service time significantly when refurbishing multiple L7 boards in a repair session.

Why Proper Thermal Paste Application Matters

• Even paste = even chip temperature — eliminates hot spots that cause throttling.
• No paste on neighbouring SMDs — prevents shorts and rework contamination.
• Faster service — apply paste to a full L7 board in seconds vs minutes of freehand work.
• Reusable across hundreds of cycles with isopropyl alcohol cleaning between uses.

Antminer L7 Stencil Specifications

FAQ — Antminer L7 Hashboard Stencil

Q: Step-by-step application?
A: (1) Clean old paste from chips with IPA and lint-free wipe. (2) Align stencil over hashboard so each window centers on a BM1489 chip. (3) Apply paste across the stencil with a straight-edge scraper, pressing firmly. (4) Lift stencil straight up to avoid smearing. (5) Inspect each chip for even paste rectangle. (6) Reinstall heatsink, torque mounting screws in cross-pattern.

Q: Which thermal paste do you recommend?
A: For continuous-duty mining on Scrypt at L7's power envelope, a 5+ W/m·K silicone-based grease (G18 or similar mining-grade) is the right choice. Avoid generic computer-grade paste — insufficient thermal conductivity for sustained ASIC heat flux.

Q: How often should I renew the thermal paste?
A: For continuous mining at 90%+ utilization, plan paste renewal every 12-18 months. Earlier renewal advisable after any hashboard removal or heatsink disassembly.

Q: Bulk pricing?
A: Yes — email contact@lys-sz.com for volume pricing on L7 stencils and matching thermal paste.

Related products

• BM1489 Tin Tool & Stencil (Antminer L7)
• BM1489 Tin Tool Fixture (L7 ASIC Chip Replacement)
• G18 Thermal Paste 1kg 5W/m·K
• Antminer L9 Water Cooling Plate

Servicing Antminer L7 fleets and stocking thermal paste stencils? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.