Amaoe U-SMU1 BGA Reballing Stencil For Samsung Exynos 8895/7870/3475/9610/990/850/3830/7884/7885/1280 RAM 496/556

Original price was: ₹250.Current price is: ₹149.

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Original price was: ₹250.Current price is: ₹149.

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  • User Guide

    User Guide

    Please read the manual before use.

    1. Introduction & Workspace Setup

    This section sets the foundation for a safe repair environment. Before a single tool touches a phone, the workspace must be prepared to protect both the technician and the sensitive electronics.

    • Electrostatic Discharge (ESD) Safety: Instructions on grounding yourself using an ESD wrist strap and working on an anti-static mat to prevent frying microchips with static electricity.

    • Safety Gear: Protocols for wearing safety glasses (critical when prying shattered glass) and working in a well-ventilated area (crucial for adhesive fumes and soldering smoke).

    • Lighting and Magnification: Recommendations for high-intensity desk lamps and digital microscopes or magnifying visors for viewing microscopic components.

    2. Disassembly & Opening Tools

    The most physically risky part of mobile repair is opening the device without cracking the glass screen or ripping delicate internal ribbon cables.

    • Thermal Tools (Heat Guns & Heat Pads): Instructions on setting precise temperatures (typically 80°C to 100°C) to soften heavy factory adhesives without damaging the display.

    • Suction & Leverage Tools: Proper placement of heavy-duty suction cups and screen prying fixtures to safely create an initial gap.

    • Separation Media (Plastic Picks & Spudgers): Techniques for slicing through glue lines using plastic opening picks without inserting them too deeply into the frame.

    3. Fastener & Component Manipulation

    Modern smartphones use dozens of tiny, highly specialized screws and brackets to hold internal shields in place.

    • Precision Driver Identification: A breakdown of specialized micro-bits, detailing exactly when to use Pentalobe (iPhones), Tri-point/Y-type (internal Apple shields), Torx/Torx Security (Android devices), and standard Micro-Phillips.

    • Organization Systems: Guidelines for using magnetic project mats or screw organizing trays to map out screw locations, preventing the catastrophic error of “long-screw damage.”

    • Gripping & Placer Tools: How to utilize straight and curved ESD-safe tweezers to safely disconnect fragile ZIF (Zero Insertion Force) and coaxial cable connectors.

    4. Diagnostics & Testing Equipment

    This section transitions the user from basic mechanical teardowns to logical troubleshooting when a phone won’t turn on or charge.

    • Digital Multimeter (DMM): Step-by-step instructions on setting up the meter for DC voltage testing (checking battery and charging port output) and continuity/diode mode (hunting for short circuits).

    • DC Power Supply: How to boot a phone motherboard without a battery attached, interpreting current draw (Amperage) to diagnose power management failures.

    • USB Ammeter / Tester: Utilizing an inline USB safety tester plugged into the charging block to instantly diagnose if a phone is pulling normal current ($1A$ to $2A$) or completely dead ($0A$).

    5. Micro-Soldering & Component Level Repair

    For advanced users handling board-level fixes like swapping out charging ports, audio IC chips, or FPC connectors.

    • Soldering Iron Stations: Temperature calibration tips, tip selection (chisel vs. conical), and maintenance/tinning procedures.

    • Hot Air Rework Stations: Managing the delicate balance of air flow and temperature to safely desolder multi-pin components without blowing adjacent surface-mount resistors off the board.

    • Chemical Consumables: Proper application of rosin flux (to clean joints and fluidize solder), solder wick (braided wire to remove old solder), and low-melt solder alloys.

    6. Adhesives, Cleaning & Reassembly

    The final step is cleaning up the internal cavity and sealing the device back up to its original structural integrity.

    • Chemical Cleaners: Safe usage of 99% Isopropyl Alcohol (IPA) to dissolve old glue residues, flux oils, and clean mild liquid damage.

    • Liquid Adhesives vs. Tape: Instructions on applying specialized acrylic glues (like B-7000) versus applying precision-cut double-sided adhesive gaskets.

    • Camping and Curing: Utilizing specialized display repair clamps to apply even, steady pressure while the new adhesives cure over 15 to 30 minutes.

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Amaoe U-SMU1 BGA Reballing Stencil For Samsung Exynos 8895/7870/3475/9610/990/850/3830/7884/7885/1280 RAM 496/556

The Amaoe U-SMU1 is a high-precision universal/dedicated BGA reballing stencil specifically engineered for the Samsung Exynos ecosystem. It is a staple tool for micro-soldering technicians performing CPU and RAM “sandwich” repairs or chip swaps.

Technical Specifications: Amaoe U-SMU1

Feature Details
Model Amaoe U-SMU1
Material High-grade Japanese Stainless Steel (Anti-warping)
Thickness Approx. 0.12mm to 0.15mm (Optimized for solder paste consistency)
Hole Type Square holes with rounded corners (Prevents solder balls from sticking)
Heat Resistance High thermal stability; designed for direct heating
Main Compatibility Samsung Exynos Processors & RAM Layers

Supported Chipset & RAM Compatibility

The U-SMU1 is particularly valued because it covers a wide range of generations, from legacy mid-range chips to modern 5G processors.

Processor (CPU) Support:

  • Exynos 800 Series: 850, 880

  • Exynos 900/1000 Series: 980, 990, 1080, 1280

  • Exynos 7 Series: 7870, 7884, 7885

  • Legacy/Mid-range: 8895, 3475, 9610, 3830

RAM Support:

Specifically includes patterns for the LPDDR memory chips often layered on top of these CPUs:

  • RAM 496

  • RAM 556

Key Features for Technicians

  • Precise Alignment: The stencil features laser-cut apertures that align perfectly with the IC pads, reducing the risk of bridges.

  • Anti-Bulge Design: The cooling holes and material choice help the stencil remain flat even when subjected to the high temperatures of a quick-heat air station.

  • Multi-Model Layout: Instead of carrying ten different stencils, this single plate covers the majority of Samsung A-series and S-series repairs from the last several years.


Pro Tip: To get the best results with this stencil, use 183°C leaded solder paste and ensure you wipe the stencil clean with anhydrous alcohol between every heat cycle to prevent carbon buildup in the apertures.

Amaoe U-SMU1 BGA Reballing Stencil For Samsung Exynos  8895/7870/3475/9610/990/850/3830/7884/7885/1280 RAM 496/556

Weight 0.05 kg

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