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GA1 SERIES

METALLIZED POLYPROPYLENE CAPACITORS
WRAP AND FILL - STYLE "A1"


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 METALLIZED POLYPROPYLENE 
  • LOW LEAKAGE, HIGH INSULATION RESISTANCE
  • SELF-HEALING, HIGH RELIABILITY
  • D C OPERATION: BLOCKING, COUPLING, BYPASS, R. F. CIRCUITRY, R. C. CIRCUITS, COMPUTERS AND INSTRUMENTATION
  • A C OPERATION: POWER FACTOR, LINE FILTERING
  • NEGATIVE TC IS ACCEPTABLE FOR USE WITH FERRITE INDUCTORS
STYLE "A1"
  • POLYESTER TAPE WARP, END FILLED WITH EPOXY
  • ROUND-CYLINDRICAL SHAPE, AXIAL LEADS
  • DESIGNED TO MEET THERMAL SHOCK, VIBRATION AND MOISTURE RESISTANCE SPECIFICATIONS
Wrap and fill capcitors are available in rectangular axial lead units, Designation is "GA2". HermeticalIy sealed and pre-molded plastic case types are also available.
 

SPECIFICATIONS

CONSTRUCTION: Metallized polypropylene capacitors are available only in extended foil (non-inductive) construction.

PACKAGING: Polyester tape wrap with epoxy endfills gives the best possible volume density for this type unit.

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. Nickel "A" leads available on request.

TEMPERATURE RANGE: May be operated at rated DC voltage from -55°C to + 85°C or to + 105°C at voltages, indicated by the derating curve.

ELECTRICAL [NON-DESTRUCTIVE] TESTS:

  1. Capacitance shall be measured at or referred to 1000 ± 20 Hz at 25 ± 5°C for capacitance values up to and including 1.0 mfd. Capacitance values greater than 1.0 mfd., shall be measured at 60 ± 6 Hz.
    Ref: MIL-STD-202 E, Method 305.
  2. Dissipation factor shall be measured as described for capacitance and shall not exceed 0.2%. Typical values, throughout temperature range are given on curve characteristics, page 3.
  3. Insulation resistance shall be measured at rated voltage or 500 VDC, whichever is less. After 2 minutes electrification, minimum values shall be 200,000 MEG/MFD, need not exceed 400,000 megohms.
    Ref: MIL-STD-202E, Method 302.
  4. Dielectric Strength: Capacitors shall withstand specified DC test potential for 60 seconds through a limiting resistance of 1 ohm/volt.
    Terminal to terminal - 150% of DC rating.
    Terminal to case - 200 % of DC almost rating..
    Ref: MIL-STD-202E, Method 301.
  5. Dielectric Absorption: Dielectric absorption shall not exceed 0.1% when tested to MIL-C-19978D.
    Ref: MIL-C-19978D, paragraph 3.22.

ENVIRONMENTAL TESTS:

  1. Vibration: Capacitors will meet or exceed the requirements of MIL-STD-202 E, Method 204C.
  2. Moisture Resistance: Capacitors will meet or exceed the requirements of MIL-STD-202E, Method 103B, Condition B, with 500V or rated voltage applied, whichever is less.
  3. Life Test: Will withstand 140% of rated DC voltage for 250 hours at 105°C. No more than 1 failure in 12 units permitted when tested.
  4. Lead Pull Test: The leads of these capacitors shall withstand a steady axially applied 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 Polypropylene capacitors in Style "GA1" round wrap and fill cases offer the user maximum volume density for cord wood type assemblies. These units have consistently met the environmental requirements of MIL-C-55514A and moisture resistance per MIL-STD-202E, Method 103B.

Metallized Polypropylene capacitors combine the reliability of self-healing action with high dielectric strength and insulation resistance of Polypropylene film.

Metallized Polypropylene capacitors are designed primarily for DC application -- blocking, coupling, 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 Polypropylene capacitors operate at all temperatures from -55 to + 85°C., derate to 60% at 105°C.
AC APPLICATION GUIDE: (AC VOLTAGE RATING, -55°C, TO +85°C AMBIENT)
DC VOLTAGE EQUIVALENT VAC (RMS) RATINGS AT
RATING 60Hz 400 Hz 800 Hz 1200 Hz
200 (.00 uf thru 1.0 uf) 160 120 80 60
(1.1 uf thru 5.0 uf) 120 90 60 50
300 (.001 uf thru .82 uf) 240 180 120 90
(.83 uf thru 4.0 uf) 210 157 105 78
400 (.001 uf thru .47 uf) 360 200 140 115
(.48 uf thru 2.0 uf) 295 165 110 90
600 (.001 uf thru .22 uf) 504 280 240 90
(.23 uf thru .82 uf) 415 230 195 74
(AC voltage assumed to be pure sine wave)

TYPICAL TEMPERATURE CHARACTERISTICS

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Specifications
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RTI Electronics, Inc. 1800 E. Via Burton St. Anaheim, CA 92806-1213
Telephone: (714) 765-8200 • Fax: (714) 765-8201