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
APPLICATIONS
Engineers with a satisfactory solution when designing PCBs which may be
subject to high levels of board flexure.
High Flexure Stress Circuit Boards
e.g. Depanelization: Components near edges
of board.
PRODUCT ADVANTAGES
Variable Temperature Applications
High mechanical performance able to withstand, 5mm bend test
Soft termination offers improved reliability per-
guaranteed.
formance in applications where there is tem-
Increased temperature cycling performance, 3000 cycles and beyond. perature variation.
Flexible termination system. e.g. All kind of engine sensors: Direct
connection to battery rail.
Reduction in circuit board flex failures.
Automotive Applications
Base metal electrode system.
Improved reliability.
Automotive or commercial grade products available.
Excellent mechanical performance and
thermo mechanical performance.
HOW TO ORDER
0805 5 C 104 K A Z 2 A
Style Voltage Dielectric Capacitance Capacitance Failure Terminations Packaging Special Code
Code (In pF) Tolerance Rate A = Std. Product
0603 6 = 6.3V C = X7R Z = FLEXITERM 2 = 7" reel
2 Sig Digits + J = 5%* A=Commercial
0805 Z = 10V F = X8R 4 = 13" reel
For FLEXITERM
Number of Zeros K = 10% 4 = Automotive
1206 Y = 16V
with Tin/Lead
e.g., 104 = 100nF M = 20%
1210 3 = 25V
termination see
1812 5 = 50V
AVX LD Series
*1F only
2220 1 = 100V
2 = 200V
NOTE: Contact factory for availability of Tolerance Options for Specific Part Numbers.
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MLCC with FLEXITERM
Specifications and Test Methods
PERFORMANCE TESTING BOARD BEND TEST PROCEDURE
According to AEC-Q200
AEC-Q200 Qualification:
Test Procedure as per AEC-Q200:
Created by the Automotive Electronics
Sample size: 20 components
Council
Span: 90mm Minimum deflection spec: 2 mm LOADING
KNIFE
Specification defining stress
Components soldered onto FR4 PCB (Figure 1)
test qualification for
MOUNTING
ASSEMBLY
Board connected electrically to the test equipment
passive components
(Figure 2)
DIGITAL
Testing:
CALIPER
BEND TESTPLATE
Key tests used to compare
soft termination to
CONNECTOR
AEC-Q200 qualification:
CONTROL
PANEL
Bend Test
CONTROL PANEL
Temperature Cycle Test
Fig 2 - Board Bend test
Fig 1 - PCB layout with electrical connections
equipment
BOARD BEND TEST RESULTS
AEC-Q200 Vrs AVX FLEXITERM Bend Test
0603
0805
12
12
AVX ENHANCED SOFT
10
10
8
8
TERMINATION BEND TEST
6
6
4
4
PROCEDURE
2 2
0 0
NPO X7R X7R soft term NPO X7R X7R soft term
Bend Test
The capacitor is soldered to the printed circuit
1210
1206
board as shown and is bent up to 10mm at
12
12
10
10
1mm per second:
8
8
6
6
4
4
2
2
0 0
NPO X7R X7R soft term NPO X7R X7R soft term Max. = 10mm
TABLE SUMMARY
90mm
Typical bend test results are shown below:
Style Conventional Termination FLEXITERM
0603 >2mm >5mm
The board is placed on 2 supports 90mm
0805 >2mm >5mm
apart (capacitor side down)
1206 >2mm >5mm
The row of capacitors is aligned with the
load stressing knife
TEMPERATURE CYCLE TEST PROCEDURE
Test Procedure as per AEC-Q200:
Max. = 10mm
The test is conducted to determine the resistance of the
component when it is exposed to extr emes of alternating
high and low temperatures.
Sample lot size quantity 77 pieces
TC chamber cycle from -55C to +125C for 1000 cycles
Interim electrical measurements at 250, 500, 1000 cycles
The load is applied and the deflection where
Measure parameter capacitance dissipation factor,
the part starts to crack is recorded (Note:
insulation r esistance
Equipment detects the start of the crack
using a highly sensitive current detection
Test Temperature Profile (1 cycle)
circuit)
The maximum deflection capability is 10mm
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Substrate Bend (mm) Substrate Bend (mm)
Substrate Bend (mm) Substrate Bend (mm)