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Hi TI expert
We are now use TLV4021, then, we nned to know the size of the Pocket.
reading from below image in datasheet, the A0 & B0 size is 0.84mm,
we found the real size is over size, It is the bottom size of the pocket.
This problem troubles our SMT project, so, we want to know the tolerance of the size. datasheet says *All dimensions are nominal, what's this meaning.
Thanks.
Hello,
Do you want to know the dimensions of the tape that our part comes in? I can provide the dimensions of the part itself as it is a device specific question if you are having trouble finding it.
Kind Regards,
Joe
Hi Joe,
We just want to know the dimensions of A0 & B0 in below image. and also want to know the tolerance of them.
we can find them in datasheet, it says the dimensions are both of 0.84mm. So what is the tolerance?
below image is the actual ones. It shows that the cavity is too big, as a result, the device wobbles in the cavity.
Because the cavity is very big, the device in the production of SMT cause side stand, turn over and other abnormal phenomenon.
below is the measured value of the bottome of the cavity. much larger than 0.84mm(datasheet mentioned value)
Hello,
Both types of carrier tapes we use have the same tolerance of 0.84mm+/-0.03mm.
Kind Regards,
Joe
Hi Joe,
Thanks for your reply.
Below is the dimensions we measure. The dimensions of the carrier is over specification, which directly cause the SMT line shutdown.
Could you help give us an advice?
Hello,
Thank you for bringing this to our attention. I have reached out to someone to address this issue. I will update you as soon as I get more information.
Kind Regards,
Joe
Hello,
The box that holds the reel has a 2D label on it. On the label, it lists Assembly LTC (Lot Trace Code) and Assembly pack STC (Ship Track Code). These codes allow the factory to trace the lot and find out what machines and materials were used for the assembly/pack. Could you please provide a picture of the label? This way, we can track where your parts came from.
Kind Regards,
Joe
Hi,
I haven't heard from you so I am wondering if you have found an answer to your question. If you don't respond I will close this thread by the end of the week.
Kind Regards,
Joe
Since we have not received a recent response, we will consider this closed. Please feel free to reply or open a new thread if further assistance is required.
Thanks, Chuck