SBSM
Surface Mount EMI Filters
2220
L1
L2
W
T
B1
B2
5.7 ± 0.4
(0.224 ± 0.015)
6.6 ± 0.4
(0.260 ± 0.015)
5.0 ± 0.4
(0.197 ± 0.015)
3.18 ± 0.2
(0.125 ± 0.008)
2.25 ± 0.4
(0.088 ± 0.015)
0.30 ± 0.25
(0.012 ± 0.010)
Type
Chip Size
Max Current
Rated
Voltage
Dielectric
C0G / NP0
50Vdc
X7R
C0G / NP0
100Vdc
X7R
C0G / NP0
200Vdc
X7R
C0G / NP0
500Vdc
X7R
SBSMC
2220
20A
SBSMP
2220
20A
Minimum and maximum capacitance
values
-
470nF
-
220nF – 330nF
-
100nF – 150nF
-
1.5nF – 68nF
-
470nF
-
220nF – 330nF
-
100nF – 150nF
-
1.5nF – 68nF
Effects of mounting method on insertion loss
C and Pi filters are mounted to PCBs and soldered in identical manner to chip capacitors. Solder connections made to each end (signal lines) and
each side band (earth track).
Whilst SBSG, SBSM and SBSP filters can be mounted conventionally on PCBs, they are also suitable for mounting in a wall or partition on a board.
This greatly improves the screening between filter input and output, thereby enhancing the high frequency response.
The following insertion loss curves (for SBSP, SBSG, SBSM Pi filters), based on actual measurements, show the effect. It can be seen that the filters
conventionally mounted (Fig. 1) exhibit a drop in attenuation at higher frequencies. Improved shielding methods (Fig. 2), maintain excellent
suppression characteristics to 1GHz and above. See below for application example.
© Knowles 2016
SBSM Datasheet Issue 2 Release Date 30/01/17
Page 1 of 4
Tel: +44 1603 723300 | Email
SyferSales@knowles.com
|
www.knowlescapacitors.com/syfer
Performance and Testing
X7R
Stable
IECQ-CECC
EIA
MIL
Rated temperature range
2R1
X7R
-
-55ºC to +125ºC
Maximum capacitance change over
temperature range
± 15%
Rated DC voltage applied
-
Knowles / Syfer dielectric ordering code
X
Tangent of loss angle
(tan δ)
≤ 0.025
Minimum Insulation resistance (Ri)
OR
Time constant (Ri*Cr) (whichever is the
least)
10G Ω or 1000s
Capacitance
tolerances available
(ordering code)
± 20% (M)
Dielectric strength
Voltage applied for 5 seconds max. Charging
current limited to 50mA maximum.
<200V
>200V to <500V
500V to <1000V
>1000V
2.5 times
Rated voltage + 250V
1.5 times
1.2 times
Climatic category (IEC)
Filter
55/125/56
Ageing characteristic (Typical)
<2% per time decade
© Knowles 2016
SBSM Datasheet Issue 2 Release Date 30/01/17
Page 2 of 4
Tel: +44 1603 723300 | Email
SyferSales@knowles.com
|
www.knowlescapacitors.com/syfer
Insertion loss tables for surface mount EMI filters - C filter
Typical No-Load Insertion Loss (dB)*
Approximate
Resonant
Frequency
(MHz)
265
235
185
154
125
100
80
65
54
46
39
33
26
21
20
19
Product Code
Packing
Capacitance
(±20%)
Dielectric
Rated
Voltage
(dc)
100MHz
0.1MHz
10MHz
1MHz
DWV
(dc)
SBSMC5000152MX
SBSMC5000222MX
T = Tape-and-Reel (178mm / 7” reels) R
= Tape-and-Reel (330mm / 13” reels)
SBSMC5000332MX
SBSMC5000472MX
SBSMC5000682MX
B = Bulk Packed
SBSMC5000103MX
SBSMC5000153MX
SBSMC5000223MX
SBSMC5000333MX
SBSMC5000473MX
SBSMC5000683MX
SBSMC2000104MX
SBSMC2000154MX
SBSMC1000224MX
SBSMC1000334MX
SBSMC0500474MX
1.5nF
2.2nF
3.3nF
4.7nF
6.8nF
10nF
15nF
22nF
33nF
47nF
68nF
100nF
150nF
220nF
330nF
470nF
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
500
500
500
500
500
500
500
500
500
500
500
200
200
100
100
50
750
750
750
750
750
750
750
750
750
750
750
500
500
250
250
125
0
0
0
0
0
0
0
0
1
2
3
5
7
11
14
17
0
0
1
2
4
5
7
11
15
17
21
24
26
31
33
36
7
11
15
17
21
24
27
31
34
37
41
44
47
52
54
54
25
31
35
40
44
50
43
43
43
43
43
43
43
43
43
43
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
* - Insertion Loss performance quoted is measured on an open board mounted on a brass backplane in a 50Ω system. Performance curves can be supplied on request. Performance in
circuit is liable to be different and is affected by board material, track layout, grounding efficiency and circuit impedances. Shielding can be used to improve high frequency
performance.
Insertion loss tables for surface mount EMI filters - Pi filter
Typical No-Load Insertion Loss (dB)*
Approximate
Resonant
Frequency
(MHz)
130
100
80
63
55
43
35
30
23
19
15
12
10
8
6
5
Product Code
Packing
Capacitance
(±20%)
Dielectric
Rated
Voltage
(dc)
100MHz
0.1MHz
10MHz
1MHz
DWV
(dc)
SBSMP5000152MX
SBSMP5000222MX
T = Tape-and-Reel (178mm / 7” reels) R
= Tape-and-Reel (330mm / 13” reels)
SBSMP5000332MX
SBSMP5000472MX
SBSMP5000682MX
B = Bulk Packed
SBSMP5000103MX
SBSMP5000153MX
SBSMP5000223MX
SBSMP5000333MX
SBSMP5000473MX
SBSMP5000683MX
SBSMP2000104MX
SBSMP2000154MX
SBSMP1000224MX
SBSMP1000334MX
SBSMP0500474MX
1.5nF
2.2nF
3.3nF
4.7nF
6.8nF
10nF
15nF
22nF
33nF
47nF
68nF
100nF
150nF
220nF
330nF
470nF
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
500
500
500
500
500
500
500
500
500
500
500
200
200
100
100
50
750
750
750
750
750
750
750
750
750
750
750
500
500
250
250
125
0
0
0
0
0
0
0
0
1
2
3
5
8
11
14
16
0
0
1
2
3
5
8
10
12
16
19
21
23
25
22
20
7
11
12
15
18
24
28
35
48
50
55
58
62
63
62
64
39
38
44
44
44
44
44
44
44
44
44
44
44
44
44
44
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
* - Insertion Loss performance quoted is measured on an open board mounted on a brass backplane in a 50Ω system. Performance curves can be supplied on request. Performance in circuit is liable to be
different and is affected by board material, track layout, grounding efficiency and circuit impedances. Shielding can be used to improve high frequency performance.
© Knowles 2016
SBSM Datasheet Issue 2 Release Date 30/01/17
Page 3 of 4
Tel: +44 1603 723300 | Email
SyferSales@knowles.com
|
www.knowlescapacitors.com/syfer
1GHz
1GHz
Ordering Information
SBS
Type
Surface
mount board
filter
M
Size
M
= 2220
P
Configuration
C
= C section
P
= Pi Section
050
Rated Voltage
050 = 50Vdc
100 = 100Vdc
200 = 200Vdc
500 = 500Vdc
0474
Capacitance in Pico farads (pF)
First digit is 0.
Second and third digits are significant
figures of capacitance code. The fourth
digit is number of zeros following.
Example:
0471
= 470nF
M
Tolerance
M = ±20%
X
Dielectric
X = X7R
T
Packaging
T=178mm
(7”) reel
R=330mm
(13”) reel
B = Bulk
Reeled Quantities
2220
178mm (7”) reel
500
330mm (13” reel)
2220
2000
Surface mount and panel mount solder-in filters
Solder pad layouts are included with the detailed information
for each part.
Recommended soldering profile
260°C. For SBSG, SBSM and SFSS ranges, solder time should
be minimised, and the temperature controlled to a maximum
of 220°C. For SFSR, SFST and SFSU ranges the maximum
temperature is 250°C.
Cooling to ambient temperature should be allowed to occur
naturally. Natural cooling allows a gradual relaxation of
thermal mismatch stresses in the solder joints. Draughts
should be avoided. Forced air cooling can induce thermal
breakage, and cleaning with cold fluids immediately after a
soldering process may result in cracked filters.
Note: The use of FlexiCap™ terminations is strongly
recommended to reduce the risk of mechanical cracking.
Soldering to axial wire leads
Soldering temperature
The tip temperature of the iron should not exceed 300°C.
Dwell time
Dwell time should be 3-5 seconds maximum to minimise the
risk of cracking the capacitor due to thermal shock.
Heat sink
Where possible, a heat sink should be used between the solder
joint and the body, especially if longer dwell times are
required.
Bending or cropping of wire leads
Bending or cropping of the filter terminations should not be
carried out within 4mm (0.157”) of the epoxy encapsulation,
the wire should be supported when cropping.
A more comprehensive application note covering
installation of all Syfer products is available on the
Syfer website.
Soldering of filters
The soldering process should be controlled such that the filter
does not experience any thermal shocks which may induce
thermal cracks in the ceramic dielectric.
The pre-heat temperature rise of the filter should be kept to
around 2°C per second. In practice successful temperature
rises tend to be in the region of 1.5°C to 4°C per second
dependent upon substrate and components.
The introduction of a soak after pre-heat can be useful as it
allows temperature uniformity to be established across the
substrate thus preventing substrate warping. The magnitude
or direction of any warping may change on cooling imposing
damaging stresses upon the filter.
E01, E03, E07 SBSP ranges are compatible with all standard
solder types including lead-free, maximum temperature
© Knowles 2016
SBSM Datasheet Issue 2 Release Date 30/01/17
Page 4 of 4
Tel: +44 1603 723300 | Email
SyferSales@knowles.com
|
www.knowlescapacitors.com/syfer
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