3M™ ACF 7371
3M™ Anisotropic Conductive Film (ACF) 7371 is a electrically conductive, heat-bondable adhesive film. The unbonded film is slightly tacky at room temperature and consists of a thermoset-elastomer and thermoplastic adhesive matrix filled with conductive particles. These particles provide interconnection of circuit lines through the adhesive, but are spaced so that 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 trapping the conductive particles. The adhesive rapidly cross-links at modest bonding temperature and pressure. 3M ACF 7371 is used in bonding a flexible printed circuit to another flexible printed circuit or to a plastic touch screen or plastic flat panel display device.
Features and Benefits
- Heat cure
- Fast bond time
- 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, Touch Panel Bonding |
| Application Category | Bonding |
| Bonding Method | Thermo-compression bonding |
| Bonding Pressure | 1 - 2 MPa |
| Bonding Temperature | 140 - 170 degree C |
| Bonding Time | 10 - 15 seconds |
| Conductive Particle Size | 10 Micron |
| Conductive Particle Type | Gold-coated polymer |
| Connection Type | Flex to Flex, Flex to Glass, Flex to PET |
| 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 | 4 mil |
| Minimum Gap (metric) | 100 micron |
| Minimum Overlap Area | 0.10 mm^2 |
| Minimum Pitch | 8 mil |
| Minimum Pitch (metric) | 200 Micron |
| Product Form | Roll |
| Product Series | 7371 |
| Shelf Life | 4 Weeks |
| Shelf Life Frozen | 12 Months |
| Standard Width (metric) | 1.0 mm, 1.5 mm, 2.0 mm, 2.5 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 |
