SAE USCAR3-4

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SPECIFICATION FOR TESTING AUTOMOTIVE MINIATURE BULBS

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SAE USCAR3-4

SPECIFICATION FOR TESTING AUTOMOTIVE MINIATURE BULBS

PUBLISH DATE 2022
PAGES 47
SAE USCAR3-4

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 Schedule Table

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
Amber Coating Chemical ResistanceX
Amber Coating Chemical ResistanceX
Amber Coating Chemical ResistanceX
Wire Loop PullX
Accelerated LifeX
Luminous Intensity MaintenanceX
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