Model 7700D – Single Ball or Ball-Wedge Wire Bonder
Click on photo to see larger image.
7700D - Single Ball or Ball-Wedge Wire Bonder
Machines of this series bond gold wires ranging from 0.0007 in. to 0.002 in. Bonds are made by the ball-to-wedge technique using ultrasonic energy and work piece heat. Wire is clamped and threaded vertically through a hollow capillary, allowing independent feeding action. The connection is begun with a ball formed on the end of the wire stock by electric discharge, and completed by a wedge bond under the end of the capillary tool. The operator using hand/eye reference to bond targets and elevations guides the bonding tool manually.
to bond targets recessed within high walled packages is gained with West·Bond’s model 7700D ball-wedge wire bonder. The 90º wire feed and overhead clamp design allows the closest proximity to adjacent walls or components. The system also allows for bonding in any direction from the initial ball bond without the need to rotate the work piece.
THROAT REACH is 5.125-in. from tool home position back to the machine lower panel. Vertical clearance above the work plane is approximately 0.250-in. over the throat reach distance. Range of movement of the tool by manipulator control is 0.563-in. vertically and 0.625-in. in horizontal directions with an 8/1 ratio of mechanical advantage.
for three different device types may be entered into separate buffers. Each device wire may be programmed with individual ultrasonic power, time, and force (high or low) and loop elevation control data. The newest feature, call “Security bond” has been added to machine settings which will help the operator to easily switch between the regualar ball bonding and security ball bonding – if the Security bond option is on, the bonding sequence will be Ball -> Wedge -> Security bond; otherwise, it will be Ball -> Wedge. All program values, action prompts, and fault diagnostics are exhibited on the easy to read 4 lines, 40 characters LCD sequentially with machine operation.
include programmable dual force (high or low), security bond, bond tool positioning utility, and pneumatic braking of Z and Y-axes during bonding. Available with or without adjustable height platform.