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
AVX [ AVX CORPORATION ]
