LMT70AYFQR- polarity of the part on the tape

Ioana Banica

Other Parts Discussed in Thread: LMT70A, LMT70

Hello,

Can you please tell me what is the meaning of this difference explained in the datasheet? "In order to meet the matching specification of the LMT70A, two units must be picked from adjacent positions from one tape and reel. If PCB rework is required, involving the LMT70A, then the pair of the LMT70A matched units must be replaced. Matching features (which include, without limitation, electrical matching characteristics of adjacent"

Does that mean the fact that the placement on the tape is different than LMT70? or is it just a difference of the temperature tolerance?

Thank you!

over 3 years ago

0 Nicole Khoury over 3 years ago

TI__Genius 10080 points

Hi Ioana,

Thank you for posting to the Sensing forum.

The LMT70 does not have a matching specification, therefore it is not necessary to choose adjacent units. However, the matching specification of the LMT70A can only be guaranteed if the devices were adjacent in the original packaging.

Best regards,

Nicole

0 Ioana Banica over 3 years ago in reply to Nicole Khoury

Prodigy 80 points

What is the meaning of the "matching specification"? Is this related to the polarity of the part on the tape or is it related to the temperature tolerance?

+1 Nicole Khoury over 3 years ago in reply to Ioana Banica

TI__Genius 10080 points

Hi Ioana,

Two adjacent LMT70A devices picked from the same tape and reel will report matching temperature values, specified within 0.1°C at 30°C. Figure 19 shows this specification across temperature:

Best regards,

Nicole

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LMT70AYFQR- polarity of the part on the tape