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  • Case ID: 334314
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Request tolerance in the D/E dimension of nRF54l15 QFN

William.wei

hi support team,

There is no tolerance in the D/E  dimension of nRF54l15 QFN,

It is reasonable to have a tolerance for packaging parameters,Can we provide a max value for parameter D and E? 

Regards,

William.

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  • +1

    Hi William

    The missing parameters are not revelant. For instance, e is only nominal. This are also called BSC (Basic Spacing between Centers) and is a term that appears on IC package drawings in reference to dimensions between pins. This is absolute and have no tolerance. 

    For QFN packet like this, the packet size is +/-0.1 mm. So D and E becomes 5.9 to 6.1 mm

    Cheers,

    Ketil

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  • +1

    Hi William

    The missing parameters are not revelant. For instance, e is only nominal. This are also called BSC (Basic Spacing between Centers) and is a term that appears on IC package drawings in reference to dimensions between pins. This is absolute and have no tolerance. 

    For QFN packet like this, the packet size is +/-0.1 mm. So D and E becomes 5.9 to 6.1 mm

    Cheers,

    Ketil

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