Tool/software:
We received an inquiry from our customer regarding the reel size of the TL431BQDBZRQ1 product.
According to the datasheet, two tape sizes are available.
As shown below, the A0 pocket dimensions are listed as 2.9 mm and 3.15 mm.
However, the DBV package dimension "A" ranges from 2.75 mm to 3.05 mm, meaning that the package size can exceed the smaller pocket size (A0 = 2.9 mm).
According to the EIA-481 standard, a clearance of 0.3 to 0.5 mm between the pocket and the component is generally recommended to ensure proper alignment, minimize rotation, and allow for reliable pick-and-place operations.
Given this, could you please explain why these tape sizes are considered acceptable for this product, even though the clearance appears to be smaller than the recommended range in some cases?
Any technical rationale or qualification data supporting this would be greatly appreciated.
Thank you very much for your support.
J.Komura. Tokyo Electron Device Ltd.
