public function calculateLam(Optoelectronics $opto, $pcbID)
{
$sEnv = $opto->getEnvironment();
$piE = $this->systemService->getPiE(611, $sEnv);
$pcb = $this->pcbService->getItem($pcbID);
$system = $this->systemService->getItem($pcb->getSystemID());
$temp = $opto->getPassiveTemp() + $opto->getDPTemp() + $system->getTemp();
$opto->setTemp($temp);
$piT = exp(-2790 * (1 / ($temp + 273) - 1 / 298));
$base = $this->getApplicationValue($opto->getApplication());
$piQ = $this->getQualityValue($opto->getQuality());
$lambda = $base * $piT * $piQ * $piE * pow(10, -6);
return $lambda;
}
