Conductive Adhesives
What are Conductive Adhesives?
Conductive adhesives are adhesives that create both mechanical bonding and electrical contact through the addition of conductive fillers. These materials combine the properties of an adhesive with the functionality of an electrical conductor.
Properties of Conductive Adhesives
- Electrical conductivity through conductive particles
- Mechanical strength like conventional adhesives
- Cohesive bonding with electrical function
- Temperature-stable conductivity
- Aging-resistant electrical properties
- Various conductivity levels available
Types of Conductive Fillers
- Silver particles: Highest conductivity and corrosion resistance
- Copper particles: Cost-effective alternative with good conductivity
- Carbon-based fillers: Graphite and carbon fibers
- Conductive polymers: Organic conductive materials
Applications
- Die Attach: Electrically conductive chip bonding
- EMC shielding: Electromagnetic compatibility
- Adhesive for Electronics: Conductor track repair and contacting
- Semiconductor Packages: Electrical through-contacting
Conductivity Types
- Volume-conductive: Conductivity in all directions
- Anisotropically conductive: Conductivity only in Z-direction
- Electric Motor Applications: Grounding and potential equalization
- Shield-conductive: Surface conductivity for EMC protection
Processing Guidelines
- Precise dispensing for reproducible conductivity
- Controlled bond line for optimal contacting
- Defined curing for conductivity optimization
- Prevention of contamination of bonding surfaces
Electrical Testing
- Volume resistance: Measurement of specific conductivity
- Contact resistance: Transition resistance to substrates
- Temperature dependence: Conductivity at various temperatures
- Long-term stability: Electrical properties after aging
DELO Adhesive Solutions
- 1-Component Systems for easy processing
- Various conductivity levels available
- High temperature-resistant variants
Looking for conductive adhesives for your electronics?
