General Specifications
The Type 418P Orange Drop
®
is designed and manufactured for operation in a wide range of demanding envi-
ronments and applications. Type 418P capacitors are wound from the most reliable polyester film and alum-
inum foil available and are protected by a rugged conformal coating of orange epoxy. They may be operated
up to +125°C with proper derating.
The 418P series finds use in many commercial and industrial applications, from power supplies and audio
amplifiers to welding equipment and ultrasonics.
Operating Temperature Range:
The standard operating temperature range for
polyester film is -55°C to +85°C. The 418P
may be operated at full voltage within this
temperature range.
The 418P may be operated up to +105°C
provided the DC working voltage is reduced
to 70% of the +85°C rating (full rating), and
up to +125°C with a 50% reduction from the
+85°C rating (full rating).
For more specific details regarding operation
above +85°C please contact our design
engineering department.
The maximum operating temperature for the
418P polyester film capacitor is +125°C.
Dielectric Withstanding Voltage:
Units rated below 1000 VDC shall withstand a
DC potential of 250% of rated voltage applied
between terminals for not more than 5 seconds.
Units rated at 1000 VDC shall withstand a DC
potential of 200% of rated voltage applied between
terminals for not more than 5 seconds.
Lead Bend Test:
After 3 consecutive 180° bends. No damage.
Humidity Testing:
Units subjected to 95% relative humidity for 72
hours with no voltage applied at +75°C. After 4
hours of drying minimum product of insulation
resistance and capacitance shall be 5,000 M⍀-µF
DC Voltage Life Test:
500 hours at +85°C at 150% of rated voltage. After
test; capacitance shall not have changed by more
than ±5% of initial value, insulation resistance shall
not have decreased by more than 50% of initial value
and dissipation factor shall not have increased to
more than 1.0%. In addition, there should be no
open or short circuits, and no sign of visible damage.
Typical Temperature Characteristics:
CDE Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: (508)996-8561 • Fax: (508)996-3830
Type 418P, Orange Drop®, Polyester Film/Foil Capacitors
