 |
 |
 |
|
20322 Windrow Drive |
 |
 |
 |
 |
| Drilling of Printed Circuit Boards: An Innovative, Engineered Entry Material for Improving Accuracy of Micro and Small Diameter Drills | |
Click here to download PDF Abstract: The interaction of the drill entry material and the drill tool are critical to producing accurately aligned connections between the different layers in a printed circuit board. The trend towards miniaturization and increased complexity of printed circuits requires the use of micro and small diameter (< 0.3mm) to produce the hole for subsequent plating and circuit interconnection. These smaller tools must endure end-load and torque stresses that cause the bit to deflect resulting in hole mis-registration and/or drill breakage. |
 |
 |