Thermal efficiency for high performance demands

This Amkor developed family of power IC packages significantly increases the thermal efficiency of power constrained standard Low-Profile Quad Flat Pack (LQFP) and Thin Quad Flat Pack (TQFP) packages. Exposed (ePad) LQFP/TQFP (also known as HLQFP/HTQFP) can increase heat dissipation by as much as 110% over a standard LQFP/TQFP, expanding the margin of operating parameters. ePad can also be connected to a ground, reducing loop inductance for high frequency applications. For a multi-chip solution, 3D packaging with die stack process is also available.

ePad LQFP/TQFPs give designers the necessary margin for designing and producing high performing products including communications, storage, wireless, networking, PCs, automotive and other similar applications. GaAs and high-speed silicon technologies work well in ePad LQFP/TQFP packages due to additional shielding and grounding capabilities.


  • 5 x 5 mm to 28 x 28 mm body size
  • 32–256 lead counts
  • Broad selection of die pad sizes
  • Double down-set ground bond ring pad
  • Copper leadframes
  • 1.0 mm body thickness for TQFP
  • 1.4 mm body thickness for LQFP
  • Custom leadframe design available
  • ExposedPad is easily inverted for heat sink attach
  • Low profile – <1.2 mm max mounted height
  • Electrical – Very low loop inductance with use of paddle as ground path, more pins available for signal and allows for operating frequencies of up to 2.4 GHz


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