C1812V104KDRACTU Datasheet, PDF (1/22 Pages) Kemet Corporation – ArcShield Technology, High Voltage, X7R Dielectric,500 1,000 VDC (Commercial & Automotive Grade)

Surface Mount Multilayer Ceramic Chip Capacitors (SMD MLCCs)
ArcShield™ Technology, High Voltage, X7R Dielectric,
500 – 1,000 VDC (Commercial & Automotive Grade)
Overview
KEMET ”ArcShield” high voltage surface mount capacitors in
X7R Dielectric are designed for use in high voltage applications
susceptible to surface arcing (arc-over discharge).
The phenomenon of surface arcing is caused by a high voltage
gradient between the two termination surfaces or between one
of the termination surfaces and the counter internal electrode
structure within the ceramic body. It occurs most frequently
at application voltages that meet or exceed 300 V, in high
humidity environments, and in chip sizes with minimal bandwidth
separation (creepage distance). This phenomenon can either
damage surrounding components or lead to a breakdown of the
dielectric material, ultimately resulting in a short-circuit condition
(catastrophic failure mode).
and typically the result of excessive tensile and shear stresses
produced during board flexure and thermal cycling. Flexible
Termination technology inhibits the transfer of board stress to the
rigid body of the MLCC, therefore mitigating flex cracks which can
result in low IR or short circuit failures.
KEMET’s “ArcShield” high voltage surface mount MLCCs are
available in automotive grade, which undergo stricter testing
protocol and inspection criteria. Whether under-hood or in-
cabin, these devices are designed for mission and safety-critical
automotive circuits or applications requiring proven, reliable
performance in harsh environments. Automotive grade devices
meet the demanding Automotive Electronics Council’s AEC–Q200
qualification requirements.
“ArcShield” Technology (Patent Pending) features KEMET’s highly
reliable base metal dielectric system combined with a unique
internal shield electrode structure that is designed to suppress an
arc-over event while increasing available capacitance. Developed
on the principle of a partial Faraday cage, this internal system
offers unrivaled performance and reliability when compared to
external surface coating technologies.
For added reliability, KEMET's Flexible Termination technology is
an available option that provides superior flex performance over
standard termination systems. This technology was developed to
address flex cracks, which are the primary failure mode of MLCCs
Click image above for interactive 3D content
Open PDF in Adobe Reader for full functionality
Ordering Information
C 1812
V
334
K
Ceramic
Case Size
(L" x W")
Specification/
Series
Capacitance
Code (pF)
Capacitance
Tolerance
0805 V = ArcShield 2 significant digits J = ±5%
1206 W = ArcShield + number of zeros K = ±10%
1210 _{with Flexible}
1808
1812
Termination
M = ±20%
C
Voltage
C = 500 V
B = 630 V
D = 1,000 V
R
Dielectric
R = X7R
A
Failure Rate/
Design
A = N/A
C
TU
Termination Packaging/
Finish¹ Grade (C-Spec)²
C = 100%
Matte Sn
L = SnPb (5%
minimum)
See
"Packaging
C-Spec
Ordering
Options
Table" below
1 _{Additional termination finish options may be available. Contact KEMET for details.}
1, 2 _{SnPb termination finish option is not available on Automotive Grade product.}
2 _{Additional reeling or packaging options may be available. Contact KEMET for details.}
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 [phone] • www.kemet.com
One world. One KEMET
C1034_X7R_HV_ARC_SMD • 12/12/2014 1