preparing a lead frame including {HEAD ~ a first die pad portion}, {TAIL ~ a second die pad portion}, and outer leads provided in a manner corresponding to the first and second die pad portions 
preparing a lead frame including { HEAD ~ a first die pad portion } , { TAIL ~ a second die pad portion } , and outer leads provided in a manner corresponding to the first and second die pad portions
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH