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3M™ UV B-Stage Adhesives

3M™ UV B-Stage Adhesives

3M introduces "Next-Generation" adhesive technology, designed to improve your IC assembly process. 3M’s printable die and stiffener attach adhesives (966A, 981B, 809D) enable robust process control and have demonstrated very high reliability.

Formulated as 100% solid, thixotropic pastes, 3M™ UV B-Stage Adhesives are applied to substrates using conventional screen or stencil printing equipment. The adhesive is then B-staged by exposure to ultraviolet (UV) light. After B-staging, the printed adhesive may be stored for up to four weeks prior to completing the bonding cycle with no loss of adhesive performance. Low pressure bonding is sufficient to provide excellent substrate wetting. A thermal cure cycle yields fully cross-linked, void-free bonds. 3M can modify properties such as tack, theology, modulus, and others to meet your specific process requirements.

SpecificationsProduct DocumentationApplication Tips
Product Preconditioning (Reliability) Tack Level After B-Staging Adhesive Type B-Stage Dosage Thermal Cure Storage Shelf Life Storage After B-Stage Conductive Particles Die Bonding
Substrate Temperature Chip Bond Head Temperature Bond Force
966A JEDEC MS Level 2* (260 reflow) Tack Free Epoxy acrylate blends High intensity UV processor with D or H type bulbs.
Recommended dosage:
0.7 J/cm2 UVA
0.5 J/cm2 UV B 		45 minutes to 1 hour at 150C 6 months at 4.44 in opaque container Store at room temperature (<10% RH, < 30) for up to 4 weeks. None 120 100 <200gf
  Bonding
809D JEDEC MS Level 2* (260 reflow) High Tack Epoxy acrylate blends High intensity UV processor with D or H type bulbs.
Recommended dosage:
0.7 J/cm2 UVA
0.5 J/cm2 UV B 		45 minutes to 1 hour at 150C 6 months at 4.44 in opaque container Store at room temperature (<10% RH, < 30) for up to 4 weeks. None Ambient conditions
Bonding force <200gf
  Pressure Heat Rise Cure Time Cooling Cycle
981B JEDEC MS Level 2* (260 reflow) Tacky Epoxy acrylate blends High intensity UV processor with D or H type bulbs.
Recommended dosage:
0.7 J/cm2 UVA
0.5 J/cm2 UV B 		45 minutes to 1 hour at 150C 6 months at 4.44 in opaque container Store at room temperature (<10% RH, < 30) for up to 4 weeks. None 300 psa (apply immediately) 10-20/minute (preheat press may be used) 1 hour at 150 Cool under pressure down to 100 minimum
* Test vehicle: Black Oxide Copper Stiffener on rigid multilayer organic substrates.