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The N series Metallized Polypropylene capacitors are ideally suited for applications requiring low Dissipation Factor, high Insulation

Resistance combined with a very low Dielectric Absorption and a low Temperature coefficient. All series N capacitors are dry-section,

non-polar, non-inductive self-healing designs. For low ESR, high-frequency, high-current applications, please see our VW series

data sheets and for high DV/DT requirements refer to the P series engineering data sheet.


Series N capacitors are available in several case styles; Oval, Wrap and Fill (NW style), Round, Wrap and Fill (NR style), Axial Leaded

Epoxy Case (NE style), Radial Leaded Epoxy Case (NF style) and both Round and Rectangular Hermetically Sealed Tubes

(NL and NG styles).


Contact our Engineering Department for special sizes, configurations, capacitance values and AC applications with Anti-Corona

construction at all frequencies. All N series capacitors are available in a variety of metal and plastic enclosures. To help facilitate

the high performance characteristics of the N series capacitors, we offer several lead configurations (i.e. screw mount tabs, tinned

copper ribbon, braided and insulated leads), for non-magnetic applications, tin coated copper leads can be supplied.



Range: -55°C to +105°C without voltage de-rating.   



Series N capacitors shall be capable of withstanding a test of 1000 hours at 105°C and 100% of the DC rated voltage or a test

of 250 hours at 105°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-PRF-55514 except as noted herein. Not more than one failure in

twelve shall be permitted. Any one of the following shall be considered a failure.


a. A change in capacitance of more than 10% from its initial value.


b. An increase in Dissipation Factor to a value greater than 150% of the accepted limit.


c. A decrease in Insulation Resistance to a value less than 30% of the acceptance limit for 25°C


d. A permanent short or open.


Series N 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.


a. PULL TEST The capacitor shall withstand a steady pull of 5 pounds axially to the leads for one minute. 


b. BEND TEST The wire lead terminals shall be bent at a point of ¼ inch from the body of the capacitor, first 90 degrees

in one direction, then back to the original position, and then 90 degrees in the opposite direction.



Series N capacitors shall be capable of withstanding a vibration test in accordance with MIL-STD-202, Method 201.

The following details and exception shall apply:


Mounting: The capacitor body shall be rigidly mounted by the entire length to the vibration test fixture. The leads

shall be soldered to rigidly supported terminals and so spaced that the length of each lead from the capacitor is

1.2 ±1/8 inch from the edge of the supporting terminal.


Measurement during Test: During the last cycle in each direction, an electrical measurement shall be made to

detect intermittent contact (not to be confused with “self healing” clearings) or open or short-circuiting.


Examination after Testing: Capacitors shall be visually examined for mechanical damage.


Series N capacitor Styles NG and NL (hermetically sealed in metal containers) shall be capable of withstanding the moisture
resistance, humidity, and temperature and immersion cycling per MIL-PRF-19978. Styles NE and NF (epoxy encased) and
styles NW and NR (wrap and fill) capacitors are not intended for exposure to high humidity conditions over extended periods of time.



American Capacitor Corporation ◊ 5367 Third Street, Irwindale, CA 91706 ◊ Phone 626-814-4444 ◊ Fax 626-814-4434

Web Site http://www.AmericanCapacitor.Com ◊ E-Mail Sales@AmericanCapacitor.Com


Updated: March 11, 2009

Publisher: American Capacitor Corporation
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