| 摘要 |
PROBLEM TO BE SOLVED: To provide a safe and reliable heater for boding tools used, when a lead projecting from the body of an electronic component, such as the outer lead of a semiconductor package, is soldered to the electrode pad of a circuit board. SOLUTION: PTC ceramics are utilized as a heat source in the bonding heater, thus maintaining a constant temperature of the heater. Inrush current is utilized, thus improving the heat-up characteristics of the heat source, and preventing damages to peripheral components, since the temperature does not exceeds the Curie point even if a control device breaks down.
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