30
Surface Mount Chip Capacitors
Application Notes
Summary of PCB bend test results
The bend tests conducted have proved that the FlexiCapTM
termination withstands a greater level of mechanical stress before
mechanical cracking occurs.
Typical examples:
Product Mean bend Mean bend Improvement
(mm) (mm) with
Standard Term. FlexiCapTM FlexiCapTM
0603 X7R 1.6 6.4 + 400%
0805 X7R 3.6 6.3 + 75%
1206 X7R 3.4 6.4 + 88%
1812 X7R 3.2 6.0 + 88%
2220 X7R 3.2 6.1 + 91%
Application Notes
FlexiCapTM may be handled, stored and transported in the same
manner as standard terminated capacitors. The requirements for
mounting and soldering FlexiCapTM are the same as for standard
SMD capacitors.
For customers currently using standard terminated capacitors there
should be no requirement to change the assembly process when
converting to FlexiCapTM.
Based upon board bend tests in accordance with IEC 60384-1 the
amount of board bending required to mechanically crack a polymer
terminated capacitor is significantly increased compared with
standard terminated capacitors.
It must be stressed however, that capacitor users must not assume
that the use of FlexiCapTM terminated capacitors will totally eliminate
mechanical cracking. Good process controls are still required for this
objective to be achieved.
notes
1. For details of the FlexiCap™ range see pages 28/29.
● Picture taken at 1,000x magnification using a SEM to demonstrate the fibrous
nature of the FlexiCapTM termination that absorbs increased levels of mechanical
stress.
benefits
The benefit to the user is to facilitate a wider process window -
giving a greater safety margin and substantially reducing the typical
root causes of mechanical stress cracking.
FlexiCapTM may be soldered using your traditional wave or reflow
solder techniques and needs no adjustment to equipment or current
processes.
Syfer has delivered millions of FlexiCapTM components and during
that time has collected substantial test and reliability data, working
in partnership with customers world wide, to eliminate mechanical
cracking.
Ordering Information
0805
Type No
Chip Size
Y
Termination
Y = FlexiCapTM
100
Voltage
016 =16V
025 =25V
050 = 50V
063 = 63V
100 = 100V
200 = 200V
250 = 250V
500 = 500V
630 = 630V
1K0 =1kV
2K0 =2kV
3K0 =3kV
4K0 =4kV
5K0 =5kV
0101
Capacitance
First digit - 0
Second digit - First significant
figure of
capacitance value
Third digit - Second significant
figure of
capacitance value
Fourth digit - Number of zeros
following.
For values that do not fit the
model above, insert the
capacitance code letter for the
decimal point
e.g. 13N6 = 13.6nF
J
Tolerance
Stable class
J=±5%
K = ±10%
M = ±20%
X
Dielectric
X = X7R
T
Packaging
T =178mm
(7”) reel
R =330mm
(13”) reel
B =Bulk pack
tubs
Suffix Code
Used for
specific
customer
requirements
© Copyright/Design right, Syfer Technology Limited, 2003.
FlexiCapTM is a registered trade mark of Syfer Technology Limited.