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Parameter
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Type
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Description
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Foreign
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Checkbox [Parts Count also]
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Indicates whether the device is made in China. If this checkbox is selected, the failure rate of the part is calculated based on Appendix A for the 299C Parts Count or Parts Stress model chosen.
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Quality Level
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Choice List [Parts Count also]
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The appropriate quality screening level of the device. Accepted quality levels and values for inductors follow. For the quality value assigned to a specific inductor, see Chinese Standard GJB/z 299C.
• A1 = 0.04
• A2 = 0.30 or 0.60
• B = 1.00
• B1 = 0.60
• B2 = 1.00
• C = 3.00 or 3.50
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Type
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Choice List [Parts Count also]
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Not required for the Chip subcategory.
The type of device. Choices vary by subcategory.
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Construction Type
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Choice List [Parts Count also]
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Required only for the Coil subcategory. Not required when Foreign is selected.
The type of coil construction. Choices are:
• Fixed
• Variable
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Rated Temperature
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Choice List
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Not required for the Chip subcategory. Also not required for other subcategories when Foreign is selected.
The rated operation temperature of the device. Many different choices are available, including 90, 105, and more.
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Temp Rise to Hot Spot
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Real (Degrees C)
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The temperature rise from the subassembly to the hot spot temperature.
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Hot Spot Temperature
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Real (Degrees C)
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Generally, this field is left at #.# so that the hot spot temperature is calculated as follows:
Hot Spot Temperature = Subassembly Temperature + Temperature Rise to Hot Spot
If you enter a value for this parameter, this value is used in place of a calculated hot spot temperature.
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[Derating Parameters]
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For more information, see Derating Parameters.
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