ENVIRONMENTAL DATA
ENVIRONMENTAL DATA
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 V series
data sheets and for high DV/DT requirements refer to the Y
series engineering data sheet.
Series N capacitors
are available in several case styles; Oval, Wrap and Fill (N style), Round,
Wrap and Fill (NC style), Axial Leaded
Epoxy Case (NE
style), Radial Leaded Epoxy Case (N2E 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.
Electron
Products Inc.
5367
Phone:
(626) 960-2299 Fax: (626) 814-4434
http://www.ElectronProductsInc.com
Updated: March 11, 2009
Copyright © 2009 Electron
Products Inc. All rights reserved.