TM
2．Noise Suppression Devices SPIKE KILLER
RoHS compliant products
Standard Specifications
SPIKEK KILLER
TM
*1
＊2
Finished Dimensions [mm]
Type No.
O.D.
SS7X4X3W
9.1
SS10X7X4.5W 11.5
SS14X8X4.5W 15.8
I.D.
H.T
3.3
5.8
6.8
＊2
O.D.
4.8 7.5
6.6 10.0
6.6 14.0
I.D.
4.5
7.0
8.0
＊2
Mean Flux
Effective core
cross section Path Length
2
Ae[mm ]
Lm [mm]
Core Size [mm]
H.T
3.0
4.5
4.5
3.38
5.06
10.1
18.8
26.7
34.6
＊3
Total Flux
φc[μWb]min
3.15
4.73
9.46
Coercive
Force ＊3
Rectangular
Ratio ＊3
22max
90min
Hc[A/m]
Br/Bm[%]
Insulating
Cover
PET case
Black
*1 Tolerance ±0.2［mm］ *2 Reference value
*3 Measuring condition：100kHz、80A/m (sine wave), R.T.
TM
☆ "SPIKE KILLER " : Registered trademarks of TOSHIBA MATERIALS Co., Ltd.
TM
☆ "SPIKE KILLER " : Resistered in U.S.A., France, Germany, U.K., Japan.
Type No.
TM
and AMOBEADS
Current*1 Wire Dia.
[A] [φmm]
Core No.
N
[turn]
Flux*2
[uWb]
Dimensions[mm]
A max B max
AB44DY0305 AB4x2x4.5DY
0.5
0.3
5
13.5
7
9
AB44DY0307
AB4x2x4.5DY
0.5
0.3
7
18.9
7
9
SS7x4x3W
0.5
0.3
9
28.3
12
8
AB34DY0402 AB3x2x4.5DY
1.0
0.4
2
2.6
6
9
AB34DY0403 AB3x2x4.5DY
1.0
0.4
3
3.9
6
9
AB44DY0402 AB4x2x4.5DY
1.0
0.4
2
5.4
7
9
AB44DY0403 AB4x2x4.5DY
1.0
0.4
3
8.1
7
9
AB44DY0404 AB4x2x4.5DY
1.0
0.4
4
10.8
7
9
SS07S0507
SS7x4x3W
1.5
0.5
7
22.1
12
8
SS07S0510
SS7x4x3W
1.5
0.5
10
31.5
12
8
SS07S0515
SS7x4x3W
1.5
0.5
15
47.3
12
8
SS10S05105
SS10x7x4.5W
1.5
0.5
5
23.7
14
10
SS10S05107
SS10x7x4.5W
1.5
0.5
7
33.1
14
10
SS10S05110
SS10x7x4.5W
1.5
0.5
10
47.3
14
10
SS10S09110
SS10x7x4.5W
5
0.9
10
47.3
15
11
SS14S09108
SS14x8x4.5W
5
0.9
8
75.7
20
11
SS14S09205
SS14x8x4.5W
10
0.9x2
5
47.3
20
11
SS07S0309
B
3max
A
15±5
TM
Wired SPIKE KILLER
soldered
Type of wire：1UEW
*1：Typical Value, using a cross section of winding wire
*2：Total Flux of core × turn
Example of applied circuit and it’
s characterisitic
[dB/div]
Chopper Converter
Testing Condition of Radiant Noise Measurment
Input
20[V］
Output
12[V]／2[A]
Frequency
90kHz
Rectifier
FRD
Detector
Simple Loop Antenna
Noise Radiation
Without Countermeasure
TM
AMOBEADS
12
- 12 -
− 8 −
FM radio band
ＣＲ Snubber
24
36
48
60
72
84
Frequency
［MHz］
96
108 120
Examples of Applied Circuits and Effects of Noise Suppression
Example Circuit：Self-Exiting Single Flyback(RCC)
100%
L
R
Q1 Cg Rg
TM
90%
Eficiency［％］
+
Wired AMOBEADS
SR
C
80%
Diode Clamp
CR Snubber
70%
60%
50%
SR：Wired AMOBEADSTM
JPN.P.
USP
No. 3190775 Toshiba Materials Co. Ltd.
No. 5745353
〃
Example of Effects
（Delaytor）
Diode Clamp
（68ｋΩ、0.022μF）
40%
0
0.5
1
1.5
2
2.5
Output Currrent
［Ａ］
3
Power Supply Efficiency
（Vin:DC140V, Vo:24V)
CR Snubber
(10Ω、1500ｐF）
Wired AMOBEADSTM
AB44DY0307 applied
Swirching
Waveform
Vds
100V/div
Id
1A/div
Turn-on
Waveform
Vds
100V/div
Id
0.5A/div
Output Voltage
Noise
Vn
20mV/div
Wired AMOBEADSTM delay the turn-on time of the MOSFET when they are inserted between the gate of
the MOSFET and drive winding on the primary side of the self-exiting single flyback (RCC). The wired
AMOBEADSTM reduce both noise, due to surge current and switching loss, by turning on the switching
element at the point when the voltage of the transformer becomes low, utilizing the the LC resonance
phenomenon induced by inductance L of the primary winding of the transformer and a snubber capacitor C.
Note : The diode clamp circuit has a tendency to increase the out put noise.
- 13 -
− 9 −
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20.12
AT
