public function calculateLam(Resistor $res, $pcbID)
{
$pcb = $this->pcbService->getItem($pcbID);
$system = $this->systemService->getItem($pcb->getSystemID());
$sysTemp = $system->getTemp();
$res->setTemp($sysTemp + $res->getDPTemp() + $res->getPassiveTemp());
$material = $this->getResMaterialByShortcut($res->getMaterial());
$base = $material['Lamb'];
$piT_tab = $material['FactorT'];
$piS_tab = intval($material['FactorS']);
$temp = $res->getTemp();
$piT = exp(-1 * $piT_tab / (8.617000000000001 * 1.0E-5) * (1 / ($temp + 273) - 1 / 298));
$pDiss = $res->getDissipationPower();
$s_pom = $pDiss / $res->getMaxPower();
switch ($piS_tab) {
case 0:
$piS = 1;
break;
case 1:
$piS = 0.71 * exp(1.1 * $s_pom);
break;
case 2:
$piS = 0.54 * exp(2.04 * $s_pom);
break;
}
$piP = pow($pDiss, 0.39);
$piQ = $res->getQuality();
$sEnv = $res->getEnvironment();
$piE = $this->systemService->getPiE(91, $sEnv);
$lambda = $base * $piT * $piP * $piS * $piQ * $piE * pow(10, -6);
return $lambda;
}
