SAE USCAR3-4

Annotation of standard text 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 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 Resistance

X

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

SUBFILE: Automotive

TYPE OF DOCUMENT: Ground Vehicle Standard

Stabilized: Mar 2022