3M™ ACF 7379
3M™ Anisotropic Conductive Film (ACF) 7379 is a heat-bondable, electrically conductive adhesive film. The pre-bonded film is tacky at room temp and consists of a thermoset-elastomer and thermoplastic adhesive matrix loaded with conductive particles. These particles allow connection of circuit lines through the adhesive, but are spaced apart for the product to be electrically insulating. Application of heat and pressure causes the adhesive to flow and to bring the circuit pads into contact by pinning the conductive particles. The adhesive cross-links rapidly at modest bonding temperature and pressure. The 3M ACF 7379 can be used in bonding a flexible printed circuit to glass-based devices such as displays or to another flexible printed circuit.
Features and Benefits
- Heat cure
- Thermo-set low temperature cure
- Slight tack at room temperature
- High adhesion to PET
- Good thermal stability
- Reworkable
- Frozen storage
Product Attributes
| Adhesive Thickness (metric) | 25 micron |
| Adhesive Type | Acrylate-Based |
| Application | Display Bonding |
| Application Category | Bonding |
| Bonding Method | Thermo-compression bonding |
| Bonding Pressure | 2 - 3 MPa |
| Bonding Temperature | 160 - 190 degree C |
| Bonding Time | 10 - 20 seconds |
| Conductive Particle Size | 10 Micron |
| Conductive Particle Type | Gold-coated polymer |
| Connection Type | Flex to Glass |
| Flex Type | Gold/Copper on Polyester, Gold/Copper on Polyimide, Silver Ink on Polyester |
| Liner Thickness (metric) | 50 micron |
| Liner Type | Polyester Film with Silicone Release |
| Minimum Gap | 2 mil |
| Minimum Gap (metric) | 50 micron |
| Minimum Overlap Area | 0.05 mm^2 |
| Minimum Pitch | 4 mil |
| Minimum Pitch (metric) | 100 Micron |
| Product Form | Roll |
| Product Series | 7379 |
| Shelf Life | 4 Weeks |
| Shelf Life Frozen | 15 Months |
| Standard Width (metric) | 1.5 mm, 2.0 mm, 3.0 mm |
| Tacking Pressure | 0.1 - 1.5 MPa |
| Tacking Temperature | 60 - 90 degree C |
| Tacking Time | 1 - 2 seconds |
| Total Trace Height (metric) | 50 micron |
