November 9, 2026 ALPHA HiTech CF31-4026 Reworkable Edgebond Epoxy
ALPHA HiTech CF31-4026 is a one-component, halogen-free, reworkable edgebond epoxy system designed to deliver exceptional thermal cycling performance in harsh operating environments. Manufactured by MacDermid Alpha, this next-generation material combines a high glass transition temperature (Tg) with a low coefficient of thermal expansion (CTE). Electronics manufacturers choose ALPHA HiTech CF31-4026 for high-reliability assemblies requiring superior mechanical rigidity along with low-temperature rework capability.
Key Features and Benefits of ALPHA HiTech CF31-4026
This advanced edgebond epoxy provides a unique balance of thermal stability, mechanical strength, and process flexibility for printed circuit board (PCB) assembly:
- High Reworkability: Easily reworkable using hot air at temperatures as low as 185 °C, reducing scrap rates and overall manufacturing costs.
- Excellent FR4 Adhesion: Provides high mechanical strength and solder joint protection under thermal stress.
- Superior Reliability: Outperforms baseline assembly configurations (such as SAC305) in board-level thermal cycling tests.
- Non-Slump Performance: Prevents material movement from contacting solder interconnects beneath components.
- UV Inspection Capability: Features a fluorescent appearance under UV light to facilitate easy quality inspection.
- Eco-Friendly Compliance: Halogen-free (no intentionally added Br or Cl) and fully compliant with RoHS Directive EU/2015/863 amending Annex II to 2011/65/EU.
Uncured Technical Data and Guidelines
Applying ALPHA HiTech CF31-4026 on assembly lines allows operators to maintain tight process control. The material features a pot life of 5 days at 25 °C and a shelf life of 6 months when stored at ≤ -20 °C. Available in standard 10 cc, 30 cc, and 55 cc syringe packages, it enables steady dispensing while preventing slumping onto delicate solder interconnects.
Technical Specifications
| Category / Parameter | Specification Details |
|---|---|
| Chemistry & Appearance | One-component Edgebond Epoxy (Black & Fluorescent) |
| Viscosity | 110,000 ± 30,000 cps (Malcom PC-10A, 30 rpm @ 25 °C) |
| Thixotropic Index | 2.5 ± 1.0 (3 rpm / 30 rpm) |
| Specific Gravity | 1.7 ± 1.0 (Solid) |
| Pot Life / Shelf Life | 5 days @ 25 °C / 6 months @ ≤ -20 °C |
| Rework Temperature | As low as 185 °C (using hot air) |
| Environmental Standards | Halogen-free, RoHS EU/2015/863 (2011/65/EU Annex II) |
Conclusion
In conclusion, ALPHA HiTech CF31-4026 offers an innovative reworkable edgebonding solution that maximizes board-level reliability while minimizing manufacturing waste. For commercial quotes, technical datasheets, or product availability, please reach out via Contact – LORIOT INDUSTRIAL.
