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AI Technology ESP 7660-HK-DAF

ESP7660-HK-DAF is a high-bond strength epoxy film adhesive laminated onto a UV release or controlled release dicing tape in designed wafer format. This new generation film incorporates wafer dicing tape and adhesive film into one DDAF (Dicing Die Attach Film). This DAF is mounted onto the back of the wafer, which is then diced into predetermined sizes. After a brief exposure to UV light (for UV releasing dicing tape), the diced chip is picked and placed directly onto a lead frame or substrate. It is designed for bonding component and substrate to substrate and carrier with matched thermal coefficients of expansion. ESP7660-HK-DAF has good thermal stability. The dry, tack-free handling of the film makes it suitable for an automated assembly.

Product Type: Epoxy Adhesive

Cure Method: Heat Cure

Technical Data Sheet
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Identification & Functionality

Product Type

Features & Benefits

Product Features
  • High moisture resistance.
  • Electrically insulating.
  • Epoxy film adhesive.
  • Dicing die attach film.
  • High tempeature with stress absorbing.
  • High volume, automated assemblies.

Applications & Uses

Cure Method
Application Procedures
  • Keep product in aluminum polylaminate protective bag when not in use.
  • Before using, remove protective bleached paper liner from film. Place wafer onto adhesive side DDAF.
  • Laminate (low heat) wafer onto adhesive until good wetting is achieved. Dice wafer as usual.
  • Once dicing is complete, pass wafer under UV light so that die can be released for pick and place operation.
  • Cure according to one of the recommended schedules.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Electrical Resistivity (at 150°C, 60minutes)min. 5x10¹⁴Ω-cm
Dielectric Strengthmin. 750Volts/mil
Glass Transition Temperature175°C
Device Push Off Strengthmin. 17.1N/mm²
Hardness85Shore A
Cured Density1.6g/cc
Thermal Conductivity0.3W/m-°C
Thermal Conductivitymin. 0.8W/m-°K
Coefficeint of Linear Thermal Expansion40ppm/°C
Maximum Continuous Operation Temperature150°C
Electrical Resistivitymin. 1x10¹⁴Ω-cm
Die Shear Strengthmin. 4000psi
Film Thickness10, 20, 40microns

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Cure Schedules
Temperature Time Pressure
85°C 4 hr 5-15 psi
125°C 90 mins 5-15 psi
150°C 30 mins 5-15 psi
175°C 5 mins 5-15 psi

For tack and cure: Tack the die with DAF with heated collet and heated stage holding the header, leadframe, module or substrate at 100-150°C. Post curing at the same temperature
The die or component can also be tacked on the substrate at 100°C or higher with 5 psi. When a filet around the edge of the die or component is observed, the pressure can be released for the rest of the bonding cycle.

Packaging & Availability

Packaging Type
Product Availability
  • ESP7660-HK-DAF is available in sheet sizes or rolls.
  • Standard thicknesses of the adhesive film portion, ESP7660-HK-DAF are 10, 20, and 40 micron.
  • Special thicknesses are available.

Storage & Handling

Shelf Life
1 Year
Storage Information

Storage temperature: 25°C in sealed package.