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197
TOROID COILS
FEATURES
l Enables you to make compact dummy choke coils for greater efficiency.
l Less power loss and minimum thermal effect to peripheral components.
l Perfectly matched to power supplies where average power and peak power differ greatly, with
magnetic saturation kept minimum.
l Low radiation noise based on its toroidal construction.
l Various materials can meet with a wide range of frequency requirement.
APPLICATIONS
l Computers, Power supply, EMI/RFI Suppression and Wideband choke coils.
MODEL DIMENSION (mm)
RB54
RBPF
T251015B08
T381121B07-1
RB (with base)
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198
RI
RI38
RIXG
TOROID COILS
MODEL DIMENSIONS (mm)
RI50
RIC7
RI194
※ Specifications other than the above will be furnished upon request.
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TOROID COILS
FEATURES
l Use of high loss ferrite materials for excellent high frequency noise absorption.
l High impedance for normal mode applications.
l Enable common-mode noise suppression without interfering video signal.
l This available in taping for automatic insertion.
APPLICATIONS
l Absorption of high frequency noise from digital equipment data lines.
l Countermeasures against radiated noise in personal computers, word processors etc.
l Countermeasures against output noise of switching power supplies and switching AC adapters.
l Countermeasures against common-mode noise at Composite video signals.
MODEL DIMENSION (mm)
RM77
Specification Table of Toroid of RM77
Impedance
|Z|( Ω) at 23 ℃
100MHz typ.
Model No.
RM77—854712
RM77—854713
RM77—854714
RM77—854715
Inductance(μH)
(1kHz/5mA) typ.
5 320 2600
10 620 2000
40 1640 1400
60 1700 1300
Rated current
(mA) typ.
Dc resistance
(mΩ) typ.
18
25
40
44
Material
CH3B
Wire ∅
(mm)
0.25
0.23
Turns
6½ Ts
9½ Ts
15½Ts
16½Ts
Test instrument : HP-4284A and HP-4395A
Tape size : JIS standard
Operating temperature : -25 to +70℃℃
Taping is available for automatic inserting.
Different ferrite materials are used to meet with special requirement.
Specifications other than the above will be furnished upon request.※
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TOROID COILS
IMPEDANCE Vs FREQUENCY CHARACTERISTICS OF RM77
TYPICAL ELECTRICAL CHARACTERISTICS
|Z| , R, X
FREQUENCY CHARACTERISTICS
VS.
Specifications other than the above will be furnished upon request.※
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201
TOROID COILS
FEATURES
l Adopting high-performance ferrite materials for excellent high frequency noise absorption.
l High impedance for normal mode applications.
l Enable common-mode noise suppression without interfering video signal.
APPLICATIONS
l Absorb high frequency noise from personal computers, word processors etc.
l Countermeasures against output noise of switching.
l Power supplies and switching AC adapters.
l Countermeasures against common-mode noise at composite video signals.
Model Dimension (mm)
RB42
Specification Table of EMI Filters of RM42
Model No.
Inductance(μH)
(1kHz/5mA) typ.
RB42—854716
10
RB42—854717
RB42—854718
RB42—854719
40
60
80
Test instrument : HP-4284A and HP-4395A
Rated voltage : 50V
Test voltage : 200VDC for one minute between lines
Insulation resistance : more than 10MΩ (100VDC, between lines)
Operating temperature: -25 to +70℃℃
Different ferrite materials are available
Impedance
|Z|( Ω) at23℃
100MHz typ.
650
1370
1430
1460
Rated current
(mA) typ.
2300
1900
1500
1200
Dc resistance
(mΩ) typ.
24
40
52
70
Material
CH3B
Wire(mm) Turns
0.25
6½ Ts
11½Ts
0.23
13½Ts
15½Ts
Specifications other than the above will be furnished upon request.※
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202
TOROID COILS
IMPEDANCE Vs FREQUENCY CHARACTERISTICS OF RM42
TYPICAL ELECTRICAL CHARACTERISTICS
|Z|, R, X
FREQUENCY CHARACTERISTICS
VS.
Specifications other than the above will be furnished upon request. ※
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