AN 71: Guidelines for Handling J-Lead, QFP, BGA, FBGA, and Lidless FBGA Devices

ID 683255
Date 3/29/2019
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1.1.2. Stoppers for J-Lead and QFP Devices in Carriers

Stoppers seal tubes and protect J-Lead and QFP devices in carriers against mechanical damage and ESD. Intel® uses black stoppers that match the tube dimensions. When inserting stoppers, follow these guidelines:

  • Before transporting or storing devices, seat stoppers firmly into both ends of the tube.
  • For easy removal, push stopper teeth fully inside the tube, with the grip extending outside. Do not insert the stopper completely inside the tube (refer to the Stopper Properly Inserted into a Tube figure).
  • To prevent devices from moving inside an incompletely filled tube, insert foam between the parts and stopper.

The following figure shows how you can properly insert a stopper in a tube.

Figure 3. Stopper Properly Inserted into a Tube

To reduce the risk of damaging leads, some special stoppers are designed to fit into a tube in only one way. It is important to insert these special stoppers correctly with the grip in the same direction as the leads, as shown in the following figure.

Figure 4. Proper Orientation of Special Stoppers

The following table lists the part numbers for Intel® -approved black stoppers for J-Lead devices.

Table 4.  Black Stopper Part Numbers for J-Lead DevicesFor more information about how to order stoppers, refer to the Intel® -Approved Packing Media and Suppliers table as listed in the Related Information section.
Pin Count Manufacturer Part Number
20 K-VT0236-25
28 K-VT0236-12
44 KBR-044
68 KBR-068
84 KBR-084

To prevent damage to leads during shipping, tubes containing 208-, 240-, and 304-lead Power Quad Flat Pack (RQFP) packages in carriers must have modified stoppers. These modified stoppers are used just like other stopper although they have a notch cut out of them, refer to the following figure.

Figure 5. Notched Stoppers for Tubes of RQFPs in Carriers

The following table lists the part numbers for Intel® -approved black stoppers for QFP devices in carriers.

Table 5.  Black Stopper Part Numbers for QFP Devices in CarriersFor more information about how to order stoppers, refer to the Intel® -Approved Packing Media and Suppliers table as listed in the Related Information section.
Pin Count Intel® Part Number
100 E20-04739-00
160 E20-04764-00
208 E20-04764-00
240 E20-04765-00
304 E20-04766-00