COMPONENT DERATING GUIDELINES - …

1 COMPONENT DERATING GUIDELINESD evicePart TypeDerating ParameterDerating LevelDC Voltage60%Ambient or Case Temperature90% derated for Ripple CurrentAmbient or Case Temperature90% derated for Ripple CurrentDC Voltage90%Surge Current80%Ripple Voltage or Current80%Temp from Max Limit10 CAmbient or Case Temperature90% derated for Ripple CurrentSurge Current80%Ripple Voltage or Current80%DC Voltage80%dv/dt when rated80%Temp from Max Limit20 CDC Voltage60%Ambient or Case Temperature80%Voltage Pin to Pin, Pins to ground/shield80%Contact Current80%Insert Temp ( C) (Delta T from Max Limit)80%Forward Current75%Forward Surge current80%Ambient or Case Temperature80%Reverse Voltage, Peak90% <100V & 80% >100 Max Junction Temp80%Power Dissipation60%Ambient or Case Temperature80%Max Junction Temp80%Zener current75%Forward and Reverse Surge Current80%Average Current65%Max Junction Temp105'C Average Forward Current65%Max Junction Temp105 CPower Dissipation60%Intrinsic Negative (PIN)

2 Reverse Voltage70%Max Junction Temp105 CForward Current65%Reverse Voltage70%Max Junction Temp105 COperating Current80%Dielectric Voltage50%Hot Spot Temperature20% below rating of insulationOperating Current60%Dielectric Voltage50%Hot Spot Temperature20% below rating of insulationVoltage Withstand, (Dielectric Strength)80%Temperature Rating80% or 100C whichever is lessSupply Voltage (VDD)70%Ambient or Case Temperature100%Frequency (% of Max Spec)80%Insulating MaterialTransient Suppressor Light Emitting Diode Schottky/ Positive Power Rectifier Pulse Transformers Coils MOS Digital FilmAC or DCSignal/SwitchZenerCapacitorsConnectors DiodesInductorsCeramicElectrolytic AluminumTantalumAll ApplicationsCE CONSULTANTS - DOUGLAS ALEXANDER COMPONENT DERATING GUIDELINESO utput Current75%Fan Out80%Max Junction Temp80%Input Voltage70%Frequency (% of Max Spec)80%Output Current75%Fan Out80%Max Junction Temp110C Supply Voltage+/-5% Frequency (% of Max Spec)

3 80%Output Current75%Fan Out75%Max Junction Temp110`C Supply Voltage90% for devices rated up to 18 Vdc max, and 80% for devices > 18 Vdc Ambient or Case Temperature100%Input Voltage between inputs and between inputs and ground (Peak)90%Input Voltage70%Frequency (% of Max Spec)80%Output Current75%Fan Out75%Max Junction Temp110C MOS LinearBipolar DigitalBipolar Linear, Incl. Voltage RegulatorsIntegrated CircuitsCE CONSULTANTS - DOUGLAS ALEXANDER COMPONENT DERATING GUIDELINESM icroprocessorsSupply Voltage+/-5%Frequency (% of Max Spec)80%Output Current75%Fan Out80%Max Junction Temp, 8-BIT125 CMax Junction Temp, 16-BIT125 CMax Junction Temp, 32-BIT100 CSupply Voltage+/-5%aFrequency (% of Max Spec)80%Output Current75%Fan Out75%Max Junction Temp, 8-BIT110 CMax Junction Temp, 16-BIT110 CMax Junction Temp, 32-BIT100 CMemory/PROMS upply Voltage+/-5%Frequency (% of Max Spec)

4 80%Output Current75%Max Junction Temp125C Max Write Cycles (EEPROM)105,000 Fixed Supply Voltage+/-5%Frequency (% of Max Spec)90%Output Current75%Max Junction Temp125 CRated Current50%Voltage90%Photo TransistorMax Junction Temp105 CAvalanche Photo DiodeReverse Voltage70%Photo Diode, PINMax Junction Temp105 CPrinted Circuit Card (PCB)Glass or FR4 Operating Temperature110C or 80% of glass transition temperature, whichever is lessPower Dissipation50%Temp from Max Limit30 CJoule Rating for Inrush Limiting Resistors80%Power Dissipation50%Temp from Max Limit40 CPower Dissipation50%Temp from Max Limit20 CPower Dissipation50%Temp from Max Limit10%Power Dissipation50%Temp from Max Limit125 CPower Dissipation50%Voltage80%Joule Rating for Inrush Limiting Resistors80%Temp from Max Limit80 CBipolarWirewound PowerThick/Thin FilmCompositionThermistorWirewound AccurateBipolarMOSMOSI ntegrated CircuitsOptoResistorsResistorsFusesFilmC hip or Through HoleCE CONSULTANTS - DOUGLAS

5 ALEXANDER COMPONENT DERATING GUIDELINEST hermistorsChip or Through HoleMaximum Current80%Ambient or Case Temperature80%Max Junction Temperature80%Peak forward blocking voltage80%Peak reverse blocking voltage80%Turn-Off timeGuardband allow 140% of maximumStatic dv/dt80%Reapplied dv/dtDoes not exceed derated static dv/dtCommutating dv/dt60%Forward RMS Current80%Forward average current75% MaxRate of rise of anode current di/dt80%Fusing current I2T80%Forward Surge current80%Latching CurrentGuardband allow 120% of CurrentGuardband allow 120% of of peak gate power70%Peak Gate Voltage or Current85%Reverse Gate Voltage, Peak60%Isolation Voltage for isolated case device80%Airflow Rating80% for AgingVoltage90% to 100% unless otherwise specified by manufacturingOperating Temperature80%Power Dissipation60%Ambient or Case Temperature80%Voltage (Peak)

6 Vce,Vbe,Vcb,Vds,Vgs80%Ic, Collector Current80%Base Current, Peak80%Breakdown Voltage85%Max Junction Temp125 CPower Dissipation60%Breakdown Voltage70%Max Junction Temp100 CPower Dissipation65%Breakdown Voltage70%Max Junction Temp110 CPower Dissipation60%Vce, Collector-Emitter Voltage70%Ic, Collector Current60%Breakdown Voltage85%Max Junction Temp125 CPower Dissipation60%Breakdown Voltage70%Max Junction Temp100 CResistive Load Current75%Operating Cycles< 100% of rated @ 10 yearsAmbient or Case Temperature80%GaAs MESFETAll SMT and Through HoleSilicon BipolarGaAs MESFETS ilicon MOSFETS ilicon BipolarTube Axial Ball BearingAll SMT and Through HoleSwitchesThyristorsTransistorsTransis tors (RF Pulse)

7 FansCE CONSULTANTS - DOUGLAS ALEXANDER COMPONENT DERATING GUIDELINESC apacitive Load Current75%Inductive Load Current40%Contact Power50%Operating Voltage80%Joule Rating80% calculatedOperating Temperature80%Maximum Working Voltage80%Temperature Rating80% or 100C whichever is lessAll SMT and Through HoleSwitchesVaristorsSurge Arrestors, and MOVsWireStranded or Solid ConductorCE CONSULTANTS - DOUGLAS ALEXANDER