Temperature Mode: Toggle this field to choose a steady, cyclic, or ramp temperature mode. Steady means that the temperature will stay constant over a period of time. The value of the steady state temperature is specified in the field labeled "Max. Temperature". The time at this steady temperature is specified in the field labeled "Dwell at Min. Temperature". Cyclic mode is used to quantify the temperature variation between two temperature extremes. The change of temperature from minimum to maximum and back to minimum is considered one cycle. The temperature extremes are specified in the fields labeled "Max. Temperature" and "Min. Temperature". The dwell times at each extreme are specified in the fields labeled "Dwell time at max. temperature" and "Dwell time at min. temperature". The time to transition from minimum temperature to maximum temperature and maximum to minimum is specified in the fields labeled "Ramp time (min. to max.)" and "Ramp time (max. to min.). Ramp mode is used to quantify the rate of variation in temperature. The minimum and maximum temperature for the ramp are specified in the field labeled "Max. temperature" and "Min. temperature". The time required for the temperature to ramp from minimum to maximum is specified in the field labeled "Ramp time (min. to max.).
Depending on the temperature mode you select, certain other parameters become available for editing. Selecting "Cyclic" activates all temperature-related fields for modification. Selecting "Steady" activates only the Max. Temperature and Dwell Time at Max. Temp. fields. Selecting "Ramp" activates only the Max. Temperature, Min. temperature, and Ramp Time (Min to Max Temp.).
Max. Temperature (°C): The maximum temperature, in degrees Celsius, that occurs in this test/screen condition. This is an entry field. The range for this field is -300 to +300 °C.
Min. Temperature (°C): The minimum temperature, in degrees Celsius, that occurs in this test/screen condition. This is an entry field. The range for this field is -300 to +300 °C.
Dwell Time at Max Temp. (mins): The number of minutes the temperature will remain at the maximum temperature. This is an entry field. The range for this field is 0.00E+00 to 1.00E+05.
Dwell Time at Min Temp. (mins): The number of minutes the temperature will remain at the minimum temperature. This is an entry field. The range for this field is 0.00E+00 to 1.00E+05.
Ramp Time (Min to Max Temp.) (mins): The number of minutes required for the test/screen condition temperature to increase from the minimum temperature to the maximum temperature. This is an entry field. The range for this field is 0.00E+00 to 100.
Ramp Time (Max to Min Temp.) (mins): The number of minutes required for the test/screen condition temperature to decrease from the maximum temperature to the minimum temperature. This is an entry field. The range for this field is 0.00E+00 to 100.
Number of Temperature Cycles: The number of temperature cycles in the test/screen condition. This is an entry field. The range for this field is 0.00E+00 to 1.00E+07.
The following definitions are used in the Vibration category, which has an APSD Graph hot key at its lower left corner.
Vibration Mode: Toggle this field to choose a random, harmonic (sine), or shock vibration mode. Random mode allows the design team to specify the power spectral density profile to which the device will be subjected during the test or screen. The design team can specify the profile using the PSD Curves Library. Once the profile has been added to the library, it can be selected from the field labeled "PSD curve (g2/Hz)". Harmonic mode allows the user to specify the amplitude and excitation frequency of the harmonic vibration to which the device will be subjected. Shock mode allows the design team to specify the time and waveform of the shock pulse to which the device will be subjected. In addition to the above parameters, that you can specify is the orientation of vibration excitation for each of the modes.
PSD Curve (g2/Hz): The maximum power spectral density applied to the package. This parameter is used to define the Random loading. This is a picklist field. The power spectral density is specified in g2/Hz.
Max G (g): The maximum acceleration applied to the package. This parameter is used to define both the Harmonic and Impact/Shock loadings. This is an entry field. The range for this field is 1 to 10,000.
Excitation Frequency: Frequency of excitation for sinusoidal vibrations. This is an entry field. The range for this field is 1 to 10,000 Hz.
Wave Form: This field defines the shape of the shock wave used to excite the package when using the shock loading. This is a picklist field. The available waveforms are listed below:
Max Acceleration (g): The maximum acceleration applied, in dimensionless gs, to the package. This value is used to specify the amplitude of the harmonic response of the package. This quantity will only appear under harmonic or shock loading conditions. This is an entry field. The range for this field is 1 to 10,000 gs.
Device X orientation: The orientation of the (horizontal) x-axis. This is an entry field. The range for the field is -1 to 1.
Device Y orientation: The orientation of the (vertical) y-axis. This is an entry field.
The range for the field is -1 to 1
Device Z orientation: The orientation of the (depth) z-axis. This is an entry field. The range for the field is -1 to 1.
The following definitions are used by the Pressure category.
Pressure Mode: Toggle this field to choose a steady, cyclic, or ramp pressure mode. Steady means that the pressure will stay constant over a period of time. The value of the steady state pressure is specified in the field labeled "Max. Pressure". The time at this steady pressure is specified in the field labeled "Dwell at Min. Pressure". Cyclic mode is used to quantify the pressure variation between two pressure extremes. The change of pressure from minimum to maximum and back to minimum is considered to be one cycle. The pressure extremes are specified in fields labeled "Max. Pressure" and "Min. Pressure". The dwell times at each extreme are specified in the fields labeled "Dwell time at max. pressure" and "Dwell time at min. pressure". The time to transition from minimum pressure to maximum pressure and maximum pressure to minimum pressure is specified in the fields labeled "Ramp time (min. to max.)" and "Ramp time (max. to min.)". Ramp mode is used to quantify the rate of variation in pressure. The minimum and maximum pressure for the ramp are specified in the field labeled "Max. pressure" and "Min. pressure". The time required for the pressure to ramp from minimum to maximum is specified in the field labeled "Ramp time (min. to max.)."
Depending on the pressure mode you choose, certain other parameters become available for editing. Selecting Cyclic activates all pressure-related fields for modification. Steady activates the Max. Pressure and Dwell Time at Max P. fields. Ramp activates the Max Pressure, Min. Pressure, and Ramp Time (Min to Max P.) fields.
Max. Pressure (ATM): The maximum pressure, in atmospheres, that occurs in the test/screen condition. This is an entry field. The range for the field is -100 to 100 atmospheres.
Min. Pressure (ATM): The minimum pressure, in atmospheres, that occurs in the test/screen condition. This is an entry field. The range for the field is -100 to 100 atmospheres.
Dwell Time at Max P. (mins): The number of minutes the pressure will remain at the maximum pressure. This is an entry field. The range for this field is 0.00E+00 to 1000 minutes.
Dwell Time at Min P. (mins): The number of minutes the pressure will remain at the minimum pressure. This is an entry field. The range for this field is 0.00E+00 to 1000 minutes.
Ramp Time (Min to Max P.) (mins): The number of minutes required for the test/screen condition pressure to increase from the minimum pressure to the maximum pressure. This is an entry field. The range for this field is 0.00E+00 to 100 minutes.
Ramp Time (Max to Min P.) (mins): The number of minutes required for the test/screen condition pressure to decrease from the maximum pressure to the minimum pressure. This is an entry field. The range for this field is 0.00E+00 to 100 minutes.
Number of Pressure Cycles: The number of pressure cycles that the device is subjected to in a test/screen condition duration. This is an entry field. The range for this field is 0.00E+00 to 1.00E+07.
The following definitions are used by the Electrostatic Discharge category:
ESD Current pulse rise time (sec): The time, in nanoseconds, required for the initial edge of the electrostatic discharge current pulse to rise from 10% to 90% of its peak value. This is an entry field. The range for this field is 0.00E+00 to 100 seconds.
ESD Current pulse decay time (sec): The time, in nanoseconds, for electrostatic discharge current to fall from its peak value to negligible value. This is an entry field. The range for this field is 0.00E+00 to 100 seconds.
ESD Peak Current (ampere): The maximum amount, in amperes, of electrostatic discharge current. This is an entry field. The range for this field is 0.00E+00 to 10,000 amperes.
ESD Voltage (volts): The difference, in volts, between the electrostatic potential induced in the package by the discharge and ground. This is an entry field. The range for this field is 0.00E+00 to 10,000 volts.
The following field is used by the Power Cycling category:
Power Cycles/Year: The number of power on/off cycles per year. This is an entry field. The range for this field is 0.00E+00 to 10,000.
The following fields are used by the Radiation category:
Radiation: The type of radiation the package will be exposed to. Toggling this field enables you to choose among four choices: N/A (not applicable), Neutron, Electron, and Alpha. Select Neutron when the package will be exposed to particles with no charge. Select Electron when the package is exposed to negative ions. Select Alpha when the particle is exposed to positively charged alpha particles.
Radiation Energy (MeV): The amount of radiation energy, in megavolts, in this test/screen condition. This is an entry field. The range for this field is 0.00E+00 to 10,000 megavolts.
Radiation Flux (e/cm2 s): The amount of radiation flux in this test/screen condition. Measured in electrons per square centimeter per second. This is an entry field. The range for this field is 0.00E+00 to 10,000.
Radiation Dose (rads): The total amount of radiation, in rads, the package will be exposed to in this test/screen condition. This is an entry field. The range for this field is 0.00E+00 to 10,000 rads.
Radiation Dose Rate (rads/sec): The amount of radiation, in rads, the package will be exposed to each second in this test/screen condition. This is an entry field. The range for this field is 0.00E+00 to 10,000 rads/sec.
Radiation Pulse Width (sec): The number of seconds required for the radiation pulse to flux from one value to a higher or lower value and back to the original value. This is an entry field. The range for this field is 0.00E+00 to 10,000 sec.
The following fields are used by the Nature category.
All of the fields can be toggled with the <Space> bar to select one of four parameters: N/A (not applicable), Low, Medium, or High. Low, Medium, and High are known as relative rating parameters.
Wind: The wind level associated with the test/screen condition.
Rain/Snow: The precipitation level associated with the test/screen condition.
Sand/Dust: The particle level associated with the test/screen condition.
Salt Spray: The ionic contaminant level associated with the test/screen condition.
Solar Radiation: The level solar radiation associated with the
test/screen condition.
The following field is used by the Wire Bond Pull Test category:
Bond Pull Force (N): The bond pull force, in Newtons, at the break point of the bond interface in this test/screen condition. This is an entry field. The range for this field is 0.00E+00 to 10,000 Newtons.
The following field is used by the Die Shear Test category:
Die Shear Force (N): The shear force, in Newtons, experienced by the die in this stress parameter. This is an entry field. The range for this field is 0.00E+00 to 10,000 Newtons.
The following field is used by the Substrate Attach Tensile Force category:
Substrate Attach Tensile Force (N): The amount of tensile stress, in Newtons, exerted on the substrate attach in this stress environment. This is an entry field. The range for this field is 0.00E+00 to 10,000 Newtons.