The Forward FW-WX78 Halogen-Free Flux Paste (Milky White) – Shield Series is an eco-friendly, high-activity micro-soldering flux specifically formulated for mobile device motherboard rework, CPU/BGA reballing, and high-density chip-level repairs. Manufactured under Forward’s Shield Series standards, this flux paste combines high thermal stability with zero-halogen chemistry to minimize toxic fumes, eliminate chemical corrosion on copper PCB pads, and prevent parasitic electrical conduction.
The milky-white formulation provides balanced fluidity when heated, allowing solder to flow effortlessly into BGA solder ball matrices without boiling violently or causing micro-solder balls to splatter across adjacent components. Packaged in an airtight 10cc syringe dispenser complete with a dedicated drive plunger and bayonet dispensing needles, it gives technicians pinpoint volumetric control for precision micro-soldering under microscopes.
Key Capabilities & Workshop Advantages
- Halogen-Free & Environmentally Safe: Eliminates aggressive halides (chlorine, bromine, fluorine), ensuring zero pad oxidation and reducing harmful bench fumes during reflow.
- True Non-Conductive Chemistry: Delivers high surface insulation resistance (SIR); will not create parasitic resistive leakage or short circuits under tight BGA underfills.
- Controlled Thermal Fluidity: Melts smoothly across pads during hot air heating without aggressive bubbling or splattering, keeping reballing stencils securely seated.
- No-Clean Minimal Residue: Leaves a clear, non-corrosive, non-sticky residue after soldering that does not require mandatory chemical washing.
- Enhanced Wetting Dynamics: Rapidly breaks through oxide films on copper traces, nickel-plated pads, and pre-tinned solder balls, yielding smooth, shiny, and structurally sound solder joints.
- Syringe-Fed Precision: The 10cc barrel with booster rod and fine metal dispensing needles prevents flux waste and eliminates cross-contamination on the technician's bench.
Technical Specification Matrix
Parameter Profile | Specification Details |
Brand & Series | FORWARD – Shield Series |
Product Model | FW-WX78 |
Flux Color / Appearance | Milky White Paste |
Packaging Volume | 10cc Syringe Barrel |
Halogen Classification | 100% Halogen-Free (Zero Halides) |
Electrical Properties | Non-Conductive / High Insulation Resistance |
Residue Characteristics | No-Clean, non-corrosive, non-hygroscopic |
Dispensing Accessories | 10mL Push Booster Rod + Dual Bayonet Needles (19G & 22G) |
Primary Compatibility | iPhone & Android CPU/eMMC/PMIC reballing, FPC connector soldering, PCB pad tinning |
Recommended Bench Applications
- BGA Chip Reballing: Provides uniform surface tension when reflowing solder balls through direct-heat stencils, preventing bridged solder joints.
- Sandwich Motherboard Layering: Lubricates middle-frame solder rings on iPhone and high-end Android dual-layer boards during preheater bonding.
- FPC & Connector Soldering: Cleans microscopic connector pins for fast solder wetting without melting delicate plastic housings.
- Jumper Wire Anchoring: Coats micro-jumper wire connections to ensure clean solder flow before curing with UV mask.
Package Contents:
- 1 × Forward FW-WX78 Halogen-Free Flux Paste (10cc Syringe)
- 1 × 10mL Syringe Booster Push Rod
- 2 × Precision Bayonet Dispensing Needles (19G & 22G)
