SSERIES POLYSTYRENE AND FOIL CAPACITORS
ENGINEERING DATA SHEET and ENVIRONMENTAL DATA
Series S Polystyrene capacitors have superior electrical properties. They are dry-section, non-polar, non-inductive wound capacitors with low Dissipation Factor, low Dielectric Absorption, high Insulation Resistance and a low Temperature Coefficient.
Series S Capacitors come in several styles: Oval Wrap & Fill (SW Style); Round Wrap & Fill (SR Style); Axial Epoxy Case (SE Style); Radial Epoxy Case (SF Style); Rectangular Hermetically Sealed (SG Style); Round Hermetically Sealed (SL Style). They are available in several sizes including Regular (3 Size code) and Miniature (2 Size code) as well as custom sizes to meet specific customer requirements.
Contact our Engineering Department for special sizes, configurations, capacitance values and AC applications with Anti-Corona construction at all frequencies. Custom metal enclosures are available. Custom designed Feed Through capacitors (SQ Style) are also available for filter applications to specific requirements.
OPERATING TEMPERATURE RANGE
Range: -55°C to +85°C, with voltage derating, 100% of the listed voltage rating from -55°C to +65°C, derate linearly to 60% of the listed voltage rating at +85°C.
Series S capacitors shall be capable of withstanding a test of 250 hours at +85°C and 140% of the DC voltage or a test of 250 hours at +125°C and 140% of the DC voltage. The voltage shall be applied to each capacitor through its individual current-limiting resistor as determined from the formula R = 0.025/C, where C is the nominal capacitance in farads and R is in ohms.
The test procedures shall be in accordance with MIL-C-19978, except as noted herein. Not more than one failure in twelve shall be permitted. Any one of the following shall be considered a failure.
Series S capacitors shall be capable of withstanding a vibration test in accordance with MIL-STD-202, Method 201. The following details and exceptions shall apply:
Series S capacitor Styles SG and SL (Hermetically Sealed in metal containers) as well as Metal Can Styles SB and SC shall be capable of withstanding the moisture resistance, humidity, and temperature and immersion cycling or MIL-C-19978. Styles SE and SF (Epoxy Case), Styles SW and SR (Wrap & Fill) and SQ (Feed-Through) capacitors are not intended for exposure to high humidity conditions over extended periods of time.
Series S capacitors utilize tin-plated, copper-clad steel wire terminals which shall be capable of withstanding the following test without mechanical damage to the capacitor or terminals:
Polystyrene and Foil Capacitor Graphs and Acceptance Criteria
Polystyrene and Foil Capacitors Size Index
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Updated: August 29, 1997Publisher: American Capacitor Corporation
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