On https://infocenter.nordicsemi.com/topic/ps_npm1300/chapters/hw_layout/mech_spec/frontpage.html?cp=7_1_0_8_1_0#qfn32 the value for K appears to be incorrect. With L = 0.4, K = 0.7, and E2 = 3.5, the package size would be 5.7 mm instead of 5. It looks like K should be 0.35 instead?