Electrically Conductive Adhesive
CAS Number: 7440-22-4
Electrically conductive adhesive (ECA) is a silver or carbon-filled polymer adhesive used as a solder alternative for bonding and electrically interconnecting electronic components. It provides reliable low-resistance electrical contact while curing at temperatures well below lead-free solder reflow, making it suitable for heat-sensitive components and flexible substrates. Available in isotropic and anisotropic grades.
Technical Specifications
| viscosity | 50,000–300,000 cP |
| appearance | Gray or black paste |
| bondStrength | >8 MPa (lap shear on FR4) |
| cureCondition | 100–150°C / 30–60 min |
| silverContent | 65–80 wt% (isotropic grade) |
| bulkResistivity | 1×10⁻⁴ to 5×10⁻³ Ω·cm |
Applications
- SMT component attachment on heat-sensitive substrates
- Flexible and wearable electronics assembly
- Solar cell tabbing and stringing
- RFID antenna bonding
- LED chip on board (COB) assembly
Key Features
- Low-temperature cure suitable for flexible substrates
- Reliable electrical conductivity as solder replacement
- RoHS compliant, lead-free process compatible
- Available in isotropic (ICA) and anisotropic (ACA) grades