Entering 299B Relays
The following table describes the part parameters required for relays when 299B is the selected calculation model. The 299B model supports all but the following subcategories of relays:
Automotive
Mercury
Reed, Dual In Line
Parameter
Type
Description
Quality Level
Choice List [Parts Count also]
The appropriate quality screening level of the device. Accepted quality levels and values for relays follow.
A1 = 0.15
A2 = 0.30
B1 = 0.50 or 0.60
B2 = 1.00
C = 5.00
Construction Type
Choice List
Not required for the following subcategories: Electronic Time Delay, Non-Thermal; Polarized; Solid State, Time Delay; and Thermal, Bimetal.
The construction type of the device. Choices vary by subcategory.
Contact Form
Choice List
Not required for the Solid State, Time Delay subcategory.
The number and type of active conducting contacts. Many different choices are available, including SPDT, 3PST, and more.
Max Rated Temp
Choice List
Not required for the Solid State, Time Delay subcategory.
The maximum temperature rating for the device. Choices are:
85
125
Load Type
Choice List
Not required for the Solid State, Time Delay subcategory.
The type of load connected external to the device. Choices are:
Lamp
Inductive
Resistive
Cycling Rate
Real
Not required for the Solid State, Time Delay subcategory.
The average number of switching cycles per hour.
Packaging
Choice List
Required only for the Solid State, Time Delay subcategory.
The type of packaging. Choices are:
Gasproof Package
General Package
Plastic and Epoxy Package
Learning Factor
Choice List
Required only for the Solid State, Time Delay subcategory.
The production level for the device. Choices are:
Stable
No Quality Control
New in Production
# Output Circuit Paths
Integer
Required only for the Solid State, Time Delay subcategory.
The number of output circuit paths.
[Voltage Parameters]
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Required only for the Solid State, Time Delay subcategory.
For more information, see Voltage Parameters.
[Current Parameters]
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For more information, see Voltage Parameters.
Max Design Current
Real (Amps)
Required only for the Solid State, Time Delay subcategory.
The maximum rated current for the operating conditions of the design.
[Temperature Parameters]
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Not required only for the Solid State, Time Delay subcategory.
For more information, see Basic Temperature Parameters.
[Derating Parameters]
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For more information, see Derating Parameters.