LOCTITE® ABLESTIK 8008HT

Known as ABLECOAT 8008HT

Features and Benefits

A 1-part, proprietary hybrid chemistry, lead-free, electrically and thermally conductive die-attach adhesive specifically formulated for high power devices in a high UPH environment.
LOCTITE® ABLESTIK 8008HT die-attach adhesive is perfect for high power devices in a high UPH environment. A lead-free alternative to soft solder and eutectic, it can potentially reduce the layers of backside metallization required. It can be applied to a wafer backside by stencil printing, B-staged in an oven, then be cured after die attach in an in-line process exhibiting a consistent, void-free bondline without bleed. Should be used with a pressure sensitive dicing tape. Not compatible with UV dicing tapes.
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Technical Information

Applications Die attach
Coefficient of thermal expansion (CTE) 37.0 ppm/°C
Coefficient of thermal expansion (CTE), Above Tg 62.0 ppm/°C
Colour Silver
Cure schedule, Snap Cure @ 170.0 °C 20.0 sec.
Cure type Heat cure
Extractable ionic content, Chloride (CI-) 9.0 ppm
Extractable ionic content, Potassium (K+) 9.0 ppm
Extractable ionic content, Sodium (Na+) 9.0 ppm
Glass transition temperature (Tg) 264.0 °C
Hot die shear strength, @ 260.0 °C 2 x 2 mm Si die on Cu LF 2.6 kg-f
RT die shear strength, 2 x 2 mm Si die on Cu leadframe 6.0 kg-f
Tensile modulus, @ 250.0 °C 2451.0 N/mm² (355340.0 psi )
Thermal conductivity 11.0 W/mK
Thixotropic index 4.0
Viscosity, Brookfield CP51, @ 25.0 °C Speed 5 rpm 50000.0 mPa·s (cP)
Volume resistivity 0.00005 Ohm cm