By Nasser Alsharafi (Manufacturing)

The Custom 3D Printed IC Tray

The custom 3D printed IC tray is designed to house 21 evenly spaced different sized common IC components. One of the largest and most desired ICs we will be using is the ATMega32U4 IC. This IC is the standard for which we will calculate our pressure and rotation of the A-Axis. The different sizes are placed in order or square mm from largest to smallest respectively. The size of the IC must be less than 0.3 inches from the aluminum table. This is due to the optimization of the machines speed. Therefore the total height of the IC is 0.25 inches. The well sizes of the 21 part compartments are 0.1 inches deep. The entire IC tray is 4.45 inches long by 3.75 inches wide. The IC tray has four holes that allow the IC tray to be attached to the aluminum table.

The compartments fit components the following components:

• SO8 x3
• SO14 x3
• SO16 x3
• ATMega32U4 x3
• Standard 14 mm x 14 mm square ICs TQFP x3
• SO28 x3
• Standard 12mm x 12 mm square ICs TQFP x3

 Fig 1 ATMega32U4 Dimensions

Figure 2. Above shows the dimensions of the ATMega32U4 IC. The D/E dimension shows the size in mm of the IC. The IC is approximately 12mm x 12mm from pin to pin.