MLCC with FLEXITERM
®
General Specifications
GENERAL DESCRIPTION
With increased requirements from the automotive industry for additional
component robustness, AVX recognized the need to produce a MLCC with
enhanced mechanical strength. It was noted that many components may be
subject to severe flexing and vibration when used in various under the hood
automotive and other harsh environment applications.
To satisfy the requirement for enhanced mechanical strength, AVX had to
find a way of ensuring electrical integrity is maintained whilst external forces
are being applied to the component. It was found that the structure of the
termination needed to be flexible and after much research and development,
AVX launched FLEXITERM
®
. FLEXITERM
®
is designed to enhance the
mechanical flexure and temperature cycling performance of a standard
ceramic capacitor with an X7R dielectric.
The industry standard for
flexure is 2mm minimum. Using FLEXITERM
®
, AVX provides up to
5mm of flexure without internal cracks. Beyond 5mm, the capacitor
will generally fail “open”.
As well as for automotive applications FLEXITERM
®
will provide Design
Engineers with a satisfactory solution when designing PCB’s which may be
subject to high levels of board flexure.
APPLICATIONS
High Flexure Stress Circuit Boards
• e.g. Depanelization: Components near edges
of board.
Variable Temperature Applications
• Soft termination offers improved reliability per-
formance in applications where there is tem-
perature variation.
• e.g. All kind of engine sensors: Direct
connection to battery rail.
Automotive Applications
• Improved reliability.
• Excellent mechanical performance and
thermo mechanical performance.
PRODUCT ADVANTAGES
• High mechanical performance able to withstand, 5mm bend test
guaranteed.
•
Increased temperature cycling performance, 3000 cycles and beyond.
•
Flexible termination system.
•
Reduction in circuit board flex failures.
•
Base metal electrode system.
•
Automotive or commercial grade products available.
HOW TO ORDER
0805
Style
0603
0805
1206
1210
1812
2220
5
Voltage
6 = 6.3V
Z = 10V
Y = 16V
3 = 25V
5 = 50V
1 = 100V
2 = 200V
C
Dielectric
C = X7R
F = X8R
104
Capacitance
Code (In pF)
2 Sig Digits +
Number of Zeros
e.g., 104 = 100nF
K
Capacitance
Tolerance
J = ±5%*
K = ±10%
M = ±20%
*≤1μF only
A
Z
2
Packaging
2 = 7" reel
4 = 13" reel
A
Special Code
A = Std. Product
Failure
Terminations
Rate
Z = FLEXITERM
®
A=Commercial For FLEXITERM
®
4 = Automotive with Tin/Lead
termination see
AVX LD Series
NOTE: Contact factory for availability of Tolerance Options for Specific Part Numbers.
46
MLCC with FLEXITERM
®
Specifications and Test Methods
PERFORMANCE TESTING
AEC-Q200 Qualification:
• Created by the Automotive Electronics
Council
• Specification defining stress
test qualification for
passive components
Testing:
Key tests used to compare
soft termination to
AEC-Q200 qualification:
• Bend Test
• Temperature Cycle Test
BOARD BEND TEST PROCEDURE
According to AEC-Q200
Test Procedure as per AEC-Q200:
Sample size:
Span: 90mm
20 components
Minimum deflection spec: 2 mm
LOADING
KNIFE
• Components soldered onto FR4 PCB (Figure 1)
• Board connected electrically to the test equipment
(Figure 2)
DIGITAL
CALIPER
BEND TESTPLATE
MOUNTING
ASSEMBLY
CONNECTOR
CONTROL
PANEL
CONTROL PANEL
BOARD BEND TEST RESULTS
AEC-Q200 Vrs AVX FLEXITERM
®
Bend Test
Substrate Bend (mm)
Substrate Bend (mm)
Fig 1 - PCB layout with electrical connections
Fig 2 - Board Bend test
equipment
12
10
8
6
4
2
0
NPO
0603
0805
12
10
8
6
4
2
0
NPO
X7R
1210
X7R soft term
AVX ENHANCED SOFT
TERMINATION BEND TEST
PROCEDURE
Bend Test
The capacitor is soldered to the printed circuit
board as shown and is bent up to 10mm at
1mm per second:
X7R
X7R soft term
Substrate Bend (mm)
Substrate Bend (mm)
12
10
8
6
4
2
0
NPO
1206
12
10
8
6
4
2
0
NPO
X7R
X7R soft term
X7R
X7R soft term
Max. = 10mm
TABLE SUMMARY
Typical bend test results are shown below:
Style
Conventional Termination
FLEXITERM
®
0603
>2mm
>5mm
0805
>2mm
>5mm
1206
>2mm
>5mm
90mm
TEMPERATURE CYCLE TEST PROCEDURE
Test Procedure as per AEC-Q200:
The test is conducted to determine the resistance of the
component when it is exposed to extremes of alternating
high and low temperatures.
• Sample lot size quantity 77 pieces
• TC chamber cycle from -55ºC to +125ºC for 1000 cycles
• Interim electrical measurements at 250, 500, 1000 cycles
• Measure parameter capacitance dissipation factor,
insulation resistance
Test Temperature Profile (1 cycle)
+125
0
C
+25
0
C
-55
0
C
1 hour 12mins
• The board is placed on 2 supports 90mm
apart (capacitor side down)
• The row of capacitors is aligned with the
load stressing knife
Max. = 10mm
• The load is applied and the deflection where
the part starts to crack is recorded (Note:
Equipment detects the start of the crack
using a highly sensitive current detection
circuit)
• The maximum deflection capability is 10mm
47
MLCC with FLEXITERM
®
Specifications and Test Methods
BEYOND 1000 CYCLES: TEMPERATURE CYCLE TEST RESULTS
10
8
% Failure
6
4
2
0
0
500 1000 1500 2000 2500 3000
1206
% Failure
0603
10
8
6
4
2
0
0
500 1000 1500 2000 2500 3000
1210
0805
10
8
% Failure
6
4
2
0
0
10
8
% Failure
6
4
2
0
0
500 1000 1500 2000 2500 3000
500 1000 1500 2000 2500 3000
AEC-Q200 specification states
1000 cycles compared to AVX
3000 temperature cycles.
Soft Term - No Defects up to 3000 cycles
FLEXITERM® TEST SUMMARY
• Qualified to AEC-Q200 test/specification with the exception
of using AVX 3000 temperature cycles (up to +150°C bend
test guaranteed greater than 5mm).
• FLEXITERM
®
provides improved performance compared to
standard termination systems.
• Board bend test improvement by a factor of 2 to 4 times.
• Temperature Cycling:
– 0% Failure up to 3000 cycles
– No ESR change up to 3000 cycles
WITHOUT SOFT TERMINATION
WITH SOFT TERMINATION
Major fear is of latent board flex failures.
Far superior mechanical performance.
Generally open failure mode beyond
5mm flexure.
48
MLCC with FLEXITERM
®
X8R Dielectric Capacitance Range
SIZE
271
331
471
681
102
152
182
222
272
332
392
472
562
682
822
103
123
153
183
223
273
333
393
473
563
683
823
104
124
154
184
224
274
334
394
474
684
824
105
Cap
(pF)
WVDC
270
330
470
680
1000
1500
1800
2200
2700
3300
3900
4700
5600
6800
8200
0.01
0.012
0.015
0.018
0.022
0.027
0.033
0.039
0.047
0.056
0.068
0.082
0.1
0.12
0.15
0.18
0.22
0.27
0.33
0.39
0.47
0.68
0.82
1
WVDC
0603
25V
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
50V
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
25V
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
N
N
N
N
N
N
N
N
0805
50V
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
N
N
N
N
N
N
25V
1206
50V
Cap
(μF)
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
M
M
M
M
M
M
M
M
M
M
M
M
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
M
M
M
M
M
M
M
M
M
M
25V
50V
25V
50V
25V
50V
SIZE
Letter
Max.
Thickness
A
0.33
(0.013)
C
0.56
(0.022)
E
0.71
(0.028)
PAPER
G
0.90
(0.035)
0603
J
0.94
(0.037)
K
1.02
(0.040)
M
1.27
(0.050)
0805
N
1.40
(0.055)
P
Q
1.52
1.78
(0.060)
(0.070)
EMBOSSED
X
2.29
(0.090)
1206
Y
2.54
(0.100)
Z
2.79
(0.110)
= AEC-Q200 Qualified
49
MLCC with FLEXITERM
®
X7R Dielectric Capacitance Range
0603
16V
101
121
151
181
221
271
331
391
471
561
681
821
102
122
152
182
222
272
332
392
472
562
682
822
103
123
153
183
223
273
333
393
473
563
683
823
104
124
154
184
224
274
334
394
474
564
684
824
105
155
185
225
335
475
106
226
25V
50V
100V
200V
10V
16V
0805
25V
50V
100V
200V
16V
25V
1206
50V
100V
200V
16V
1210
25V
50V
100V
16V
1812
25V
50V
100V
25V
2220
50V
100V
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
M
M
M
N
N
N
N
N
N
N
N
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
M
M
M
N
N
N
N
N
N
N
N
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
N
N
N
N
N
N
N
N
N
N
N
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
N
N
N
N
N
N
N
N
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
M
M
M
M
M
M
M
M
N
N
N
N
N
N
N
N
N
N
N
N
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
M
M
M
M
M
M
Q
Q
Q
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
M
M
M
M
M
M
Q
Q
Q
Q
Q
Q
Q
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
P
P
P
P
P
P
P
P
Q
Q
Q
Q
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
M
M
M
M
P
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
K
K
K
K
K
K
M
M
P
P
P
P
P
P
P
P
P
Z
Z
Z
Z
K
K
K
K
K
K
M
M
P
P
P
P
Q
X
Z
Z
Z
Z
Z
Z
Z
K
K
K
K
K
K
M
M
P
P
P
P
Q
X
Z
Z
Z
Z
Z
Z
Z
K
K
K
K
K
M
M
M
P
Q
Q
Q
Q
Q
Q
Q
Q
Q
X
Z
Z
Z
Z
Z
K
K
K
K
K
K
K
M
M
M
X
X
X
X
X
X
K
K
K
K
K
K
K
M
M
M
X
X
X
X
X
X
K
K
K
K
K
K
K
M
M
M
X
X
X
X
X
X
Z
Z
Z
Z
Z
K
K
K
K
K
M
M
X
X
X
X
X
Z
Z
Z
Z
Z
Z
Z
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Z
Z
16V
25V
50V
100V
200V
10V
16V
25V
50V
100V
200V
16V
25V
50V
100V
200V
16V
25V
50V
100V
16V
25V
50V
100V
Z
Z
25V
Z
50V
100V
0603
Letter
Max.
Thickness
A
0.33
(0.013)
C
0.56
(0.022)
E
0.71
(0.028)
PAPER
0805
G
0.90
(0.035)
J
0.94
(0.037)
K
1.02
(0.040)
M
1.27
(0.050)
1206
N
1.40
(0.055)
1210
P
Q
1.52
1.78
(0.060)
(0.070)
EMBOSSED
X
2.29
(0.090)
Y
2.54
(0.100)
1812
Z
2.79
(0.110)
2220
50
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