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SAE USCAR3-4

M00020123

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SAE USCAR3-4 SPECIFICATION FOR TESTING AUTOMOTIVE MINIATURE BULBS (Stabilized: Mar 2022)

standard by SAE International, 03/15/2022

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Full Description

The procedures contained in this specification cover the laboratory testing of miniature incandescent bulbs for use in automotive illumination and signaling applications. The following tests shall be run whenever the following occurs: New bulb design Design or process change made to an existing bulb, which could affect the outcome of the test. The completion of one calendar year as noted in the following Test Schedule Table. Process control data is acceptable.
Test Title Yearly
Physical DimensionsX
Mean Spherical CandelaX
External Visual ExaminationX
CrushX
Thermal ShockX
Bayonet Base RetentionX
Pin RemovalX
Wedge Base RetentionX
Lead Wire BendX
Lead Wire PullX
Natural Amber ColorX
Coated Amber Color Integrated Color Visual Color Point Color Color Maintenance and Coating Durability Amber Coating Chemical ResistanceX
X
X
Resonant Frequency
Aged Resonant Frequency
Salt Spray
Wire Loop PullX
Outgassing/Heat
Laboratory Life
Accelerated LifeX
Luminous Intensity MaintenanceX
Vibration Durability
Shock
Aged Vibration Durability
Test Schedule Table