| 摘要 |
PROBLEM TO BE SOLVED: To improve production efficiency in the ultrasonic bonding of a heat sink to the back of pads on a lead frame. SOLUTION: A heat sink frame 8a is set crosswise above a lead frame 1a, a pad 3 of an arbitrary lead frame 1 is aligned with a heat sink 8 corresponding thereto, a pressure tool 14 contacts the heat sink 8 to apply an ultrasonic vibration, so as to ultrasonically bond the pad 3 to the heat sink 8, while the heat sinks 8 are separated individually from a connection frame 18 by the ultrasonic vibration. |
