Entering 299C Thyristors
The following table describes the part parameters required for the Thyristor subcategory when 299C is the selected calculation model.
Parameter
Type
Description
Foreign
Checkbox [Parts Count also]
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.
Quality Level
Choice List [Parts Count also]
The appropriate quality screening level of the device. Accepted quality levels and values for thyristors follow.
A2 = 0.05
A3 = 0.10
A4 = 0.20
B1 = 0.50
B2 = 1.00
C = 5.0
[Voltage Parameters]
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Not required when Foreign is selected.
For more information, see Voltage Parameters
[Current Parameters]
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For more information, see Current Parameters.
[Temperature Parameters]
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For more information, see Comprehensive Temperature Parameters.
[Derating Parameters]
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For more information, see Derating Parameters.