Dimensions
SFKKT
SFAKT
EMI ‘T’ Filters
SFKKT & SFAKT ranges
Syfer’s new range of compact,
panel mounted ‘T’ filters provides
EMI protection in a wide range
of industry sectors including
aerospace, communications and
microwave modules. The SFKKT
and SFAKT families feature round
or hexagonal bodies respectively.
These feedthrough EMI filters are
smaller than previous ‘T’ filters, and
smaller than competitive devices for
equivalent capacitance values. They
will particularly suit equipment
where panel space is at a premium.
The SFKKT versions with round
heads suitable for 4.6mm pitching
are specifically designed for high
density mounting.
Each ‘T’ filter integrates two
inductors and one multilayer
discoidal ceramic capacitor, utilising
C0G or X7R dielectric material.
They deliver capacitance values
from 10pF to an outstanding 47nF,
with a maximum operating voltage
of 500Vd.c., up to 6.8nF. No other
manufacturer offers such high
capacitance for protection against
EMI. The high operating voltage,
similarly, helps protect circuits from
spikes or transients.
Diameter (O.D.)
4.40mm
Body
11mm
Thread
M3.5 x 0.6 - 6g
Slot
1.0mm wide x 1.0mm deep
Size
4.0mm A/F
Body
10.5mm
Thread
M3.5 x 0.6 - 6g
Ø 4.4
(0.173)
SLOT WIDTH 1.0
(0.039)
15.0 ± 1.0
(0.591 ± 0.039)
7.5
(0.295)
3.5
(0.137)
17.0 ± 1.0
(0.669 ± 0.039)
4.0 A/F
(0.157)
15.0 ± 1.0
(0.591 ± 0.039)
6.5
4.0
(0.157)
17.0 ± 1.0
(0.669 ± 0.039)
PIN Ø 0.7
(0.028)
(0.256)
PIN Ø 0.7
SLOT DEPTH
1.0 (0.039)
0.9 U/CUT
(0.035)
(0.028)
0.9 U/CUT
(0.035)
Specification
Capacitance Values
C0G/NP0
10pF - 330pF
X7R
470pF - 47nF
Dielectric Withstand Voltage
Up to 200Vwkg - 2.5xVwkg
500Vwkg - 1.5xVwkg
Insulation Resistance
10 GΩ min tested at
100V.d.c. (V.Wkg. 100Vd.c.
V.Wkg. (V.Wkg. 100Vd.c.)
or 1,000s (time constant), whichever is
the less
Electrical
Electrical Configuration
T Filters
Capacitance Measurement
At 1000hr point
Current Rating
10A
Operating Temperature
-55ºC to 125ºC
Ferrite Inductance, typical
1.0µH
Circuit
T Section
Mechanical
Material
Body: Silver Plated Brass
Axial Lead: Silver Plated Copper Alloy
Tightening torque (max)
0.35Nm when using nut & washer
0.18Nm into tapped hole
Ordering Information
SF
Syfer Filters
A
Case style
A = 4.0mm
A/F
K = 4.4mm
O.D.
K
Thread
K = M3.5
T
Electrical
Configuration
T = T Section
500
Working Voltage
500 = 500Vd.c.
200 = 200Vd.c.
100 = 100Vd.c.
50 = 50Vd.c.
0100
Capacitance
Expressed in
picofarads (pF)*
Z
Capacitance
tolerance
Z = ±20%/80%
M = ±20%
C
Dielectric
C = C0G/NP0
X = X7R
1
Hardware
1 = With
hardware
0 = Without
hardware
*First digit is 0. Second and third digits are significant figures of capacitance code.
The fourth digit is number of zeros following. Example: 0102=1000pF.
SFKKT and SFAKT ranges
Typical Insertion Loss (dB)
No load. 50 ohm system
1MHz
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
4
7
10
14
17
Capacitance
±20% UOS
Working
Voltage
Vd.c
Material
SFKKT
Type Number
SFAKT
Type Number
10MHz
0
0
0
0
0
0
0
0
0
1
2
4
7
10
13
17
19
23
26
29
33
36
39
100MHz
0
0
1
2
4
6
9
12
15
19
21
24
28
30
34
38
40
43
45
47
49
50
52
1GHz
9
11
14
18
20
23
27
30
33
36
40
43
47
50
53
57
59
63
66
68
70
70
70
design - creations@panpublicity.co.uk
10pF
-20%/+80%
15pF
-20%/+80%
22pF
-20%/+80%
33pF
-20%/+80%
47pF
-20%/+80%
68pF
100pF
150pF
220pF
330pF
470pF
680pF
1.0nF
1.5nF
2.2nF
3.3nF
4.7nF
6.8nF
10nF
15nF
22nF
33nF
47nF
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
200
200
100
50
50
C0G
C0G
C0G
C0G
C0G
C0G
C0G
C0G
C0G
C0G
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
X7R
SFKKT5000100ZC0
SFKKT5000150ZC0
SFKKT5000220ZC0
SFKKT5000330ZC0
SFKKT5000470ZC0
SFKKT5000680MC0
SFKKT5000101MC0
SFKKT5000151MC0
SFKKT5000221MC0
SFKKT5000331MC0
SFKKT5000471MX0
SFKKT5000681MX0
SFKKT5000102MX0
SFKKT5000152MX0
SFKKT5000222MX0
SFKKT5000332MX0
SFKKT5000472MX0
SFKKT5000682MX0
SFKKT2000103MX0
SFKKT2000153MX0
SFKKT1000223MX0
SFKKT0500333MX0
SFKKT0500473MX0
SFAKT5000100ZC(*)
SFAKT5000150ZC(*)
SFAKT5000220ZC(*)
SFAKT5000330ZC(*)
SFAKT5000470ZC(*)
SFAKT5000680MC(*)
SFAKT5000101MC(*)
SFAKT5000151MC(*)
SFAKT5000221MC(*)
SFAKT5000331MC(*)
SFAKT5000471MX(*)
SFAKT5000681MX(*)
SFAKT5000102MX(*)
SFAKT5000152MX(*)
SFAKT5000222MX(*)
SFAKT5000332MX(*)
SFAKT5000472MX(*)
SFAKT5000682MX(*)
SFAKT2000103MX(*)
SFAKT2000153MX(*)
SFAKT1000223MX(*)
SFAKT0500333MX(*)
SFAKT0500473MX(*)
(*) Add ‘1’ for mounting hardware / ‘0’ for no hardware.
The SFKKT and SFAKT ranges are fully RoHS compliant.
Syfer Technology Limited
Old Stoke Road, Arminghall, Norwich
Norfolk NR14 8SQ England
Telephone
(General): +44 1603 723300
Telephone
(Sales): +44 1603 723310
Fax:
+44 1603 723301
Email:
sales@syfer.co.uk
Syfer Technology Ltd is a member of the Dover
Electronics Ceramic Products Group.
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