Type 778P/779P
Orange Drop
®
400 Volts A-C
Polypropylene Film/Foil
Capacitors
Features
• Specifically designed for A-C voltage
applications where corona free operation
is required for high reliability.
• Extremely low dissipation factor and ESR.
• Ideal for high frequency, high pulse
current applications; dV/dt rating
up to 77,400 volts/µsec.
• Excellent stability, virtually linear
temperature coefficient.
• Compact size with various lead spacings.
Specifications
Capacitance Range:
470 pF to
.033
µF
Capacitance Tolerance:
±1% to
±10%
Voltage Ratings:
400 Volts A-C/630 Volts D-C
Operating Temperature Range:
-55°C to +85°C
(+105°C with proper voltage derating)
Lead Wire:
Tinned copper-clad steel,
.032" (.8) diameter, #20 AWG
Insulation Resistance:
400,000 M⍀ minimum at +25°C
20,000 M⍀ minimum at +85°C
2,000 M⍀ minimum at +105°C
Temperature Coefficient (typical, over
temperature range of -55°C to +85°C):
-140 ppm/°C, Type 778P
-180 ppm/°C, Type 779P
Pulse Rise Time, dV/dt:
See standard ratings table.
Dissipation Factor & ESR:
See standard ratings table.
Corona Start Voltage (typical):
500 Volts RMS
Encapsulation:
Conformal coating of flame retardant
orange epoxy (meets UL94V-0 specs.)
Dielectric:
Polypropylene film; utilizing a floating
common of metallized polypropylene,
which provides self-healing characteristics.
Construction:
Non-inductively wound with extended
foil, internal series-section design.
Applications:
Electronic Lighting Ballasts, Switching
Power Supplies, Resonant Converters.
Dimensions in inches, metric (mm) in parenthesis.
CDE Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: (508)996-8561 • Fax: (508)996-3830
400 VAC
Type 778P/779P, Orange Drop®, Polypropylene Film/Foil Capacitors
