| Model: | SB² Jet |
|---|---|
| Function: | The equipment is used for selective laser ball placement and array micro-bump fabrication on the pads of chips, various substrates, wafers and other devices. |
| Engineer: | Ms.Liu / 34206126-6027 / liudanqh@1 |
| Location: | East Area, Packaging II Zone |
| Equipment ID: | EPK2LSJ01 |
Laser ball placement machines are used for selective laser ball planting and array micro-bump machining on the pads of semiconductor and microelectronic devices such as single chips, various substrates, wafers and BGAs. They are especially suitable for the fabrication of flip-chip bumps on single chips and ball placement for fine-pitch solder balls.
Process / Testing Capabilities
The laser ball placement machine supports solder ball diameters ranging from 40μm to 450μm, is compatible with various common alloy solder balls, and enables non-contact bonding.
Technical Specifications
A single solder ball is first delivered to the nozzle by the ball feeding system. It is heated and melted by laser irradiation, then ejected onto the pad surface under the action of nitrogen flow, completing the wetting and soldering of the solder ball.

100μm SAC solder ball

450μm SAC solder ball

主要表现为焊球从焊盘表面飞走或位置偏移,一般为焊盘金属与焊球之间浸润不好或焊盘表面不洁净。