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SPECIFICATIONS
CONSTRUCTION: Metalized Polycarbonate
capacitors are available only in extended foil (non-inductive)
construction.
PACKAGING: Rectangular style,
polyolefin encased, with epoxy endseals, axial leads.
LEADS: Copperweld (steel, coated
with 30% copper by weight and tinplated with 60-40 Sn-Pb)
is standard and may be soldered or welded in circuit assembly.
TEMPERATURE RANGE: May be operated
at rated DC voltage from -55°C to 125°C without derating
voltage.
ELECTRICAL [NON-DESTRUCTIVE] TESTS:
- Capacitance shall be measured at or referred to 1000
± 20 Hz at 25 ± 5°C for capacitance values up to and including
1.0 uf. Capacitance values greater than 1.0 MFD shall
be measured at 60 ± 6 Hz.
Ref: MIL-STD-202E, Method 305.
- Dissipation factor shall be measured as described for
capacitance and shall not exceed 0.3% to 1 MFD, 0.5% greater
than 1 MFD. Typical values throughout the temperature
range, are given on curves.
- Insulation resistance shall be measured as follows:
50-100V at 25°C 25,000 MEG/MFD,
need not exceed 50,000 Megohms.
200V + at 25°C 50,000 MEG/MFD,
need not exceed 100,000 Megohms.
Ref: MIL-STD-202E, Method 302.
- Dielectric Strength: Capacitors shall withstand specified
DC test potential for 1 minute through a limiting resistance
of 1 Ohm/Volt.
Terminal to Terminal -- 150 % of DC Rating.
Terminal to Case -- 200% of DC Rating.
Ref: MIL-STD-202E, Method 301.
- Dielectric Absorption: Shall not exceed 0.2% when tested
to MIL-C-19978D.
Ref: MIL-C-19978D, Paragraph 3.22.
ENVIRONMENTAL TESTS:
- Vibration: Capacitors will meet or exceed the requirements
of MIL-STD-202E, Method 204.
- Moisture Resistance: Capacitors will meet or exceed
the requirements of MIL-STD-202E, Method 103B, condition
B with 500 VDC or rated voltage applied, whichever is
less.
- Life Test: Will withstand 140% of the Rated DC Voltage
at 125°C for 250 hours with not more than 1 failure in
12 units.
- Lead Pull Test: The leads on these capacitors shall
withstand a steadily applied axial pull of 5 lbs. for
one minute.
CUSTOM DESIGN
Available on short notice-special shapes,
values, characteristics, combination sections and networks.
Non-metallic cases or fabricated steel and brass with glass-to-metal
seals. Engineering service is expert and prompt.
APPLICATIONS
Metallized polycarbonate capacitors
in Style "T2" are encased in irradiated polyolefin
and sealed with epoxy. The polyolefin material is not susceptible
to burns that might be inflicted by careless use of a soldering
iron. These capacitors are intended for utilization in sealed
or encapsulated assemblies.
Metallized polycarbonate capacitors
combine the reliability of self-healing action with high
dielectric strength and insulation resistance of polycarbonate
film.
Metallized polycarbonate capacitors
are designed primarily for DC application -- blocking, coupling,
decoupling, bypass, DC line filtering - where RF and audio
components are small in comparison to DC rating. However,
they have been used very successfully in such AC power applications
as power factor correction and AC line filtering.
Metallized polycarbonate capacitors
operate at all temperatures from -55°C to + 125°C.
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