November 3, 2026 ALPHA HiTech CU11-3127 Capillary Underfill
ALPHA HiTech CU11-3127 is a high-performance one-component capillary underfill designed to provide robust protection for assembled chip packages on printed circuit boards. Manufactured by MacDermid Alpha, this advanced formulation effectively safeguards solder joints against mechanical stresses such as drop shock and impact bending.
Key Features and Engineering Benefits
Engineered for high-reliability microelectronic assemblies, this protective material balances thermal stability with mechanical stress relief:
- Efficiently releases stress across large areas, mitigating CTE mismatch between components and the substrate.
- High Glass Transition Temperature (Tg) combined with a Low Coefficient of Thermal Expansion (CTE).
- Fully halogen-free chemistry supporting sustainable electronic manufacturing.
- Complies with global RoHS Directive 2015/863/EU environmental standards.
Application and Curing Guidelines
Proper storage, thawing, and thermal curing are required to achieve full mechanical property development:
- Storage & Thawing: Store frozen at ≤ -20°C in an upright position (tip facing down). Thaw at room temperature for 2 hours before opening the cap; do not refreeze once thawed.
- Dispensing Parameters: Dispense effectively at room temperature. For higher nozzle temperatures, maintain < 40°C to preserve pot life stability. Substrate preheat up to ≤ 80°C accelerates flow rate.
- Curing Profiles (Convection Oven): Cure at 140°C for ≥ 20 minutes, 150°C for ≥ 15 minutes, or 165°C for ≥ 5 minutes.
Technical Specifications
Below is the detailed technical datasheet summary for process engineering and assembly design:
| Property | Specification / Requirement |
|---|---|
| Chemical Type | One-component Capillary Underfill |
| Primary Features | High Tg, Low CTE, Halogen-Free |
| Environmental Compliance | RoHS Directive 2015/863/EU |
| Storage Temperature | ≤ -20°C (Upright Position) |
| Thawing Time | 2 hours at room temperature |
| Dispensing Nozzle Temp | < 40°C |
| Substrate Preheat Temp | ≤ 80°C |
| Curing Conditions | 140°C (≥ 20 min) / 150°C (≥ 15 min) / 165°C (≥ 5 min) |
Conclusion
Integrating ALPHA HiTech CU11-3127 into SMT production lines guarantees high mechanical reliability and structural integrity for critical chip package assemblies. For technical support, volume purchasing, or dispensing assistance, please visit Contact – LORIOT INDUSTRIAL.
