Copyright © 2008 Toshiba Materials Co.,Ltd. All rights reserved.
“AMOBEADS
®”
Noise Suppression Devices
“AMOBEADS
®
“
suppresses directly the rapid change of current or voltage as the origin
of noise, which reduces circuit noise. It differs Ferrite beads as absorbing noise occurred.
☆
Example of the noise suppression on a Chopper Converter
☆Effective
suppression of noise
Minimize directly the rapid change of current or voltage
☆Low
loss and temperature rise
Cobalt based amorphous material has low loss at high frequency
☆Low
influence against circuit parts
High rectangular ratio means low influences such as surge voltage.
Copyright © 2008 Toshiba Materials Co.,Ltd. All rights reserved.
New Design
FEATUERS
AMOBEADS
®
”DY series”
NEW
☆Improvement
in
Cost Performance
over conventional “AMOBEADS
®
”
by optimizing new case material and the structure.
☆
Superior Noise Suppression
over RC Snubbers and Ferrite Beads.
Can be used to reduce parts, reduce cost, and save circuit board
space.
STANDARD SPECIFICATION
*New size AB2.8X4.5DY
Finished Dimensions [mm]
1)
RoHS compliant products
Total Flux
TYPE
O.D.
New
H.T.
5.7±0.3
4.2±0.3
Φ½[μW½]
min. 0.9
2)
min.0.9
Reference
Casing
:
Black PBT
packing unit
:
10kp/pack
Casing
:
Blue PBT
AB 2.8 x 4.5 DY
AB 3 x 2 x 3 W
4.0±0.2
4.0±0.2
1) The Inner Diameter is such that a lead of 1.2mm x 0.7mm can be inserted.
2) Converted from Inductance Value L1 at 1kHz、100mA(sine wave), RT.
Copyright © 2008 Toshiba Materials Co.,Ltd. All rights reserved.
Possible to supply
AMOBEADS®
with taping radial lead
FEATUERS
NEW
☆
Possible to supply AMOBEADS
®
with taping radial lead
☆
Easily replacement from ferrite beads with lead
☆
Simple structure succeed high cost performance
STANDARD SPECIFICATION
RoHS compliant products
TYPE
LB 2.8 x 4.5 U
Current
1)
I [A]
(5)
Total Flux
1)
Φ½[μW½]
min.0.9
Packing unit
(p/pack)
3,000
1) Converted from Inductance Value L1 at 1kHz, 100mA (sine wave), RT.
Unit
:
mm
P
12.7
PO
12.7
D0
φ4.0
a
9.0以下
d
φ0.8
Radial Taping
Copyright © 2008 Toshiba Materials Co.,Ltd. All rights reserved.
Application Examples
Replacement from Ferrite beads
☆
Output noise reduction (Forward converter)
15V
/ 10A
Noise
Reduction
CR snubber + ferrite beads
AMOBEADS
®
SW ON
Important
High inductance, during
High inductance, during
zero crossing of current,
zero crossing of current,
makes spike current reduce
makes spike current reduce
and suppress the noise.
and suppress the noise.
High Inductance
SW OFF
ferrite beads
AMOBEADS
®
Copyright © 2008 Toshiba Materials Co.,Ltd. All rights reserved.