WIMA SMD-PEN
Metallized Polyethylene-Naphthalate (PEN) SMD Film Capacitors with
Box Encapsulation. Capacitances from 0.01
mF
to 1.0
mF.
Rated Voltages from 63 VDC to 400 VDC. Size Codes from 1812 to 2824.
Special Features
˜
Size codes 1812, 2220 and 2824,
with PEN and encapsulated
˜
Operating temperature up to 125° C
˜
Self-healing
˜
Suitable for lead-free soldering
˜
According to RoHS 2011/65/EU
D
Electrical Data
Capacitance range:
0.01
mF
to 1.0
mF
Rated voltages:
63 VDC, 100 VDC, 250 VDC, 400 VDC
Capacitance tolerances:
±20%, ±10% (±5% available subject
to special enquiry)
Operating temperature range:
–55+ C to +125+ C
Climatic test category:
55/125/21 according to IEC
Insulation resistance
at +20+ C:
U
r
U
test
C
0.33
mF
3.75 x 10
3
M¸
1 x 10
4
M¸
63 VDC 50 V
100 VDC 100 V
250 VDC 100 V
Test voltage:
1.6 U
r
, 2 sec.
Voltage derating:
A voltage derating factor of 1.25 % per K
must be applied from +100) C for DC
voltages and from +90) C for AC
voltages
Reliability:
Operational life
300 000 hours
Failure rate
2 fit (0.5 x U
r
and 40+ C)
Typical Applications
For general DC-applications e.g.
˜
By-pass
˜
Blocking
˜
Coupling and decoupling
˜
Timing
0.33
mF
< C
1.0
mF
1250 sec (M¸ x
mF)
3000 sec (M¸ x
mF)
Construction
Dielectric:
Polyethylene-Naphthalate (PEN) film
Capacitor electrodes:
Vacuum-deposited
Internal construction:
Measuring time: 1 min.
Dissipation factors
at +20) C: tan
d
at f
1 kHz
10 kHz
100 kHz
C
0.1
mF
8 x 10
-3
15 x 10
-3
30 x 10
-3
0.1
mF
< C
1.0
mF
8 x 10
-3
15 x 10
-3
–
Pulse rise time V/
m
sec
max. operation/test
100 VDC
250 VDC
35/350
20/200
10/100
6/60
4/40
40/400
40/400
12/120
–
–
Plastic film
Vacuum-deposited
electrode
Metal contact layer
(schoopage)
Terminating plate
Maximum pulse rise time:
for pulses equal to the rated voltage
Capacitance
m
F
0.01
0.033
0.1
0.33
1.0
...
...
...
...
0.022
0.068
0.22
0.68
63 VDC
30/300
20/200
10/100
8/80
3,5/35
400 VDC
35/350
21/210
–
–
–
Encapsulation:
Solvent-resistant, flame-retardant plastic
case, UL 94 V-0
Terminations:
Tinned plates.
Marking:
Colour: Black.
Dip Solder Test/Processing
Resistance to soldering heat:
Test Tb in accordance with DIN IEC
60068-2-58/DIN EN 60384-23.
Soldering bath temperature max. 260+ C.
Soldering duration max. 5 sec.
Change in capacitance
D
C/C
5 %.
Soldering process:
Re-flow soldering (see temperature/time
graphs page 13).
Packing
Available taped and reeled in blister pack.
Detailed taping information and graphs
at the end of the catalogue.
For further details and graphs please
refer to Technical Information.
20
04.18
D
Recommendation for Processing
and Application of SMD Capacitors
Layout Form
The components can generally be
positioned on the carrier material as
desired. In order to prevent soldering
shadows or ensure regular temperature
distribution, extreme concentration of the
components should be avoided. In prac-
tice, it has proven best to keep a
minimum distance of the soldering
surfaces between two WIMA SMDs of
twice the height of the components.
Soldering Process
Re-flow soldering
Solder Pad Recommendation
H
d
W
b
a
L
c
d
Bonding slit
Size
code
1812
2220
2824
4030
5040
6054
L
± 0.3
4.8
5.7
7.2
10.2
12.7
15.3
W
± 0.3
3.3
5.1
6.1
7.6
10.2
13.7
d
0.5
0.5
0.5
0.5
0.7
0.7
a
b
c
min. min. max.
1.2 3.5 3.5
1.2 4
4.5
1.2 4
6.5
2.5 6
9
2.5 6 11.5
2.5 6 14
Temperature/time graph for the permissible processing temperature of the
WIMA SMD film capacitor for typical convection soldering processes.
Due to versatile procedures exact pro-
cessing parameters for re-flow soldering
processes cannot be specified. The graph
depicted is to be understood as a recom-
mendation to help establishing a suitable
soldering profile fulfilling the requirements
in practice at the user. During processing
a max. temperature of T=210° C inside the
component should not be exceeded. Due
to the differing heat absorption the length
of the soldering process should be kept as
short as possible for smaller size codes.
The solder pad size recommendations
given for each individual series are to be
understood as minimum dimensions which
can at any time be adjusted to the layout
form.
SMD Handsoldering
WIMA SMD capacitors with plastic
film dielectric are generally suitable for
hand-soldering, e. g. for lab purposes, with
a soldering iron where, however, similar to
automated soldering processes, a certain
duration and temperature should not be
exceeded. These parameters are dependent
on the physical size of the components and
the relevant heat absorption involved.
Size code
1812
2220
2824
4030
5040
6054
Temperature ° C / ° F
250 / 482
250 / 482
260 / 500
260 / 500
260 / 500
260 / 500
The below data are to be regarded as
guideline values and should serve to avoid
damage to the dielectric caused by exces-
sive heat during the soldering process. The
soldering quality depends on the tool used
and on the skill and experience of the per-
son with the soldering iron in hand.
Processing
The processing of SMD components
– assembling
– soldering
– electrical final inspection/calibrating
must be regarded as a complete process.
The soldering of the printed circuit board,
for example, can constitute considerable
stress on all the electronic components.
The manufacturer‘s instructions on the pro-
cessing of the components are mandatory.
Time duration
2 sec plate 1
3 sec plate 1
3 sec plate 1
5 sec plate 1
5 sec plate 1
5 sec plate 1
/
/
/
/
/
/
5
5
5
5
5
5
sec
sec
sec
sec
sec
sec
off
off
off
off
off
off
/
/
/
/
/
/
2
3
3
5
5
5
sec
sec
sec
sec
sec
sec
plate
plate
plate
plate
plate
plate
2
2
2
2
2
2
04.18
13
D
Recommendation for Processing
and Application of SMD Capacitors
(Continuation)
Solder Paste
To achieve reliable soldering results one of
the following solder alloys have from case
to case proven being workable:
Lead free solder paste
Sn - Bi
Sn - Zn (Bi)
Sn - Ag - Cu (suitable for SMD-PET 5040/
6054, SMD-PEN and SMD-PPS)
Solder paste with lead
Sn - Pb - Ag (Sn60-Pb40-A, Sn63-Pb37-A)
advisable to prolong the storage time to
t
10 days
In this way ageing effects of the capacitor
structure can be anticipated. Parameter
changes due to processing are not to be
expected after this period of time
number of other outstanding qualities:
favourable pulse rise time
low ESR
low dielectric absorption
available in high voltage series
large capacitance spectrum
stand up to high mechanical
stress
”
good long-term stability
”
”
”
”
”
”
As regards technical performance as well
as quality and reliability, the WIMA
SMD series offer the possibility to cover
nearly all applications of conventionally
through-hole film capacitors with SMD
components. Furthermore, the WIMA SMD
series can now be used for all the deman-
ding capacitor applications for which, in
the past, the use of through-hole compo-
nents was mandatory:
”
measuring techniques
”
oscillator circuits
”
differentiating and integrating
circuits
”
A/D or D/A transformers
”
sample and hold circuits
”
automotive electronics
With the WIMA SMD programme avai-
lable today, the major part of all plastic
film capacitors can be replaced by WIMA
SMD components. The field of application
ranges from standard coupling capacitors
to use in switch-mode power supplies as
filter or charging capacitors with high vol-
tage and capacitance values, as well as
in telecommunications e.g. the well-known
telephone capacitor 1
m
F/250VDC.
Humidity Protection Bags
Taped WIMA SMD capacitors are shipped
in humidity protection bags according to
JEDEC standard (ESD/EMI-shield/water-
vapour proof).
Under controlled conditions the compo-
nents can be stored two years and more
in the originally sealed bag. Opened
packing units should immediately be used
up for processing. If storage is necessary
the opened packing units should be stored
air-tight in the original plastic bag.
Washing
WIMA SMD components with plastic
encapsulation - like all other components
of similar construction irrespective of the
make - cannot be regarded as herme-
tically sealed. Due to today’s common
washing substances, e. g. on aqueous
basis instead of the formerly used halo-
genated hydrocarbons, with enhanced
washing efficiency it became obvious that
assembled SMD capacitors may show an
impermissibly high deviation of the electri-
cal parameters after a corresponding
washing process. Hence it is recommended
to refrain from applying industrial washing
processes for WIMA SMD capacitors in
order to avoid possible damages.
Reliability
Taking account of the manufacturer‘s
guidelines and compatible processing,
the WIMA SMD stand out for the same
high quality and reliability as the
analogous through-hole WIMA series. The
technology of metallized film capacitors
used e.g. in WIMA SMD-PET achieves
the best values for all fields of application.
The expected value is about:
Û
0
2 fit
Furthermore the production of all WIMA
components is subject to the regulations
laid down by ISO 9001:2008 as well
as the guidelines for component specifi-
cations set out by IEC quality assessment
system (IECQ) for electronic components.
Initial Operation/Calibration
Due to the stress which the components
are subjected to during processing, reversi-
ble parameter changes occur in almost all
electronic components. The capacitance
recovery accuracy to be expected with
careful processing is within a scope
of
DC/C
5 %.
For the initial operation of the device a
minimum storage time of
t
24 hours
is to be taken into account. With cali-
brated devices or when the application
is largely dependent on capacitance it is
Electrical Characteristics and
Fields of Application
Basically the WIMA SMD series have the
same electrical characteristics as the ana-
logous through-hole WIMA capacitors.
Compared to ceramic or tantalum
dielectrics WIMA SMD capacitors have a
04.18
14
模拟与混合信号
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
