Automotive MLCC
Automotive
GENERAL DESCRIPTION
AVX Corporation has supported the Automotive Industry requirements for
Multilayer Ceramic Capacitors consistently for more than 10 years. Products
have been developed and tested specifically for automotive applications and
all manufacturing facilities are QS9000 and VDA 6.4 approved.
As part of our sustained investment in capacity and state of the art
technology, we are now transitioning from the established Pd/Ag electrode
system to a Base Metal Electrode system (BME).
AVX is using AECQ200 as the qualification vehicle for this transition. A
detailed qualification package is available on request and contains results on
a range of part numbers including:
•
X7R dielectric components containing BME electrode and copper
terminations with a Ni/Sn plated overcoat.
•
X7R dielectric components, BME electrode with epoxy finish for conduc-
tive glue mounting.
•
X7R dielectric components BME electrode and soft terminations with a
Ni/Sn plated overcoat.
•
NP0 dielectric components containing Pd/Ag electrode and silver termi-
nation with a Ni/Sn plated overcoat.
HOW TO ORDER
0805
Size
0603
0805
1206
1210
1812
5
Voltage
10V = Z
16V = Y
25V = 3
50V = 5
100V = 1
200V = 2
500V = 7
A
Dielectric
NP0 = A
X7R = C
X8R = F
104
Capacitance
Code (In pF)
2 Significant
Digits + Number
of Zeros
e.g. 10µF = 106
K
Capacitance
Tolerance
J = ±5%
K = ±10%
M = ±20%
4
Failure Rate
4 = Automotive
T
Terminations
T = Plated Ni and Sn
Z = FLEXITERM
TM
U = Conductive Epoxy
2
Packaging
2 = 7" Reel
4 = 13" Reel
A
Special Code
A = Std. Product
NOTE: Contact factory for non-specified capacitance values.
COMMERCIAL VS AUTOMOTIVE MLCC PROCESS COMPARISON
Administrative
Design
Dicing
Lot Qualification
(Destructive Physical
Analysis - DPA)
Visual/Cosmetic Quality
Application Robustness
Commercial
Standard Part Numbers.
No restriction on who purchases these parts.
Minimum ceramic thickness of 0.020"
Side & End Margins = 0.003" min
As per EIA RS469
Automotive
Specific Automotive Part Number. Used to control
supply of product to Automotive customers.
Minimum Ceramic thickness of 0.029" (0.74mm)
on all X7R product.
Side & End Margins = 0.004" min
Cover Layers = 0.005" min
Increased sample plan –
stricter criteria.
100% inspection
Increased sampling for accelerated wave solder on
X7R and NP0 followed by lot by lot reliability testing.
Standard process and inspection
Standard sampling for accelerated
wave solder on X7R dielectrics
All Tests have Accept/Reject Criteria 0/1
35
Automotive MLCC
NP0/X7R Dielectric
FLEXITERM™ FEATURES
a) Bend Test
The capacitor is soldered to the PC Board as shown:
b) Temperature Cycle testing
“Soft Termination” has the ability to withstand at least
1000 cycles between –55°C and +125°C
1mm/sec
90 mm
Typical bend test results are shown below:
Style
Conventional Term
0603
>2mm
0805
>2mm
1206
>2mm
Soft Term
>5
>5
>5
ELECTRODE AND TERMINATION OPTIONS
NP0 DIELECTRIC
NP0 Ag/Pd Electrode
Nickel Barrier Termination
PCB Application
Sn
Ni
Ag
Figure 1 Termination Code T
X7R DIELECTRIC
X7R Dielectric
PCB Application
Ni
Sn
Ni
Cu
Cu
Epoxy
Ni
Sn
X7R Nickel Electrode
Soft Termination
PCB Application
Ni
Figure 2 Termination Code T
Figure 3 Termination Code Z
Conductive Epoxy Termination
Hybrid Application
Cu
Termination
Conductive
Epoxy
Ni
Figure 4 Termination Code U
36
PCB设计
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