3
9
Notice for TAIYO YUDEN products 
Please read this notice before using the TAIYO YUDEN products.
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1
INFORMATION ON THE GENERAL CATALOG
REMINDERS
■ Product information in this catalog is as of October 2008. All of the contents specified herein are
subject to change without notice due to technical improvements, etc. Therefore, please check for the
latest information carefully before practical application or usage of the Products.
Please note that Taiyo Yuden Co., Ltd. shall not be responsible for any defects in products or equipment
incorporating such products, which are caused under the conditions other than those specified in this
catalog or individual specification.
■ Please contact Taiyo Yuden Co., Ltd. for further details of product specifications as the individual
specification is available.
■ Please conduct validation and verification of products in actual condition of mounting and operating
environment before commercial shipment of the equipment.
■ All electronic components or functional modules listed in this catalog are developed, designed and
intended for use in general electronics equipment.(for AV, office automation, household, office supply,
information service, telecommunications, (such as mobile phone or PC) etc.). Before incorporating the
components or devices into any equipment in the field such as transportation,( automotive control, train
control, ship control), transportation signal, disaster prevention, medical, public information network
(telephone exchange, base station) etc. which may have direct influence to harm or injure a human
body, please contact Taiyo Yuden Co., Ltd. for more detail in advance.
Do not incorporate the products into any equipment in fields such as aerospace, aviation, nuclear
control, submarine system, military, etc. where higher safety and reliability are especially required.
In addition, even electronic components or functional modules that are used for the general electronic
equipment, if the equipment or the electric circuit require high safety or reliability function or
performances, a sufficient reliability evaluation check for safety shall be performed before commercial
shipment and moreover, due consideration to install a protective circuit is strongly recommended at
customer's design stage.
■ The contents of this catalog are applicable to the products which are purchased from our sales offices
or distributors (so called TAIYO YUDENs official sales channel).
It is only applicable to the products purchased from any of TAIYO YUDEN s official sales channel.
■ Please note that Taiyo Yuden Co., Ltd. shall have no responsibility for any controversies or disputes that
may occur in connection with a third party's intellectual property rights and other related rights arising
from your usage of products in this catalog. Taiyo Yuden Co., Ltd. grants no license for such rights.
■ Caution for export
Certain items in this catalog may require specific procedures for export according to Foreign
Exchange and Foreign Trade Control Law of Japan, U.S. Export Administration Regulations, and
other applicable regulations. Should you have any question or inquiry on this matter, please contact our
sales staff.
Should you have any question or inquiry on this matter, please contact our sales staff.
用途 APPLICATIONS
形名表記法 ORDERING CODE
特長 FEATURES
390 △
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例 01
example 01
B U 0 5 M B 0 1 △○
1
2
3
4
5
6
・多孔型（メガネ状）及びリング状フェライトコアにバイファラ巻線したバ
ルントランス
・MCタイプはベース一体構造により薄型を実現
バルントランス
BALUN TRANSFORMERS
OPERATING TEMP. ー25〜＋105℃（製品自己発熱含む）
（Including self-generated heat）
BU Balun transformer
1
Type 
・High stability due to pair wire windings
・MC type: pins are molded into the base to create a singular structure
・This item can be custom designed to meet customer requirements
BU バルントランス
1
形式
05 5.0、5.3
06 6.0
コアの長辺寸法〔mm〕
2
3
形状
MB ピンタイプ
MC 面実装タイプ
4
試作番号
・インピーダンス変換器
・分配器
5
包装記号
T テーピング
△ 単品（ピンタイプのみ）
△＝スペース
・Impedance transformers
・Distribution transformers
6
当社管理記号
△ 標準品
△＝スペース
2
05 5.0, 5.3
06 6.0
Length of component〔mm〕
3
Shape
MB pin type
MC Surface-mount type
4
5
Packaging
T Tape&Reel
△ Bulk（Only pin type）
△＝Blank space
6
Internal code
△ Standard product
△＝Blank space
回路例
Example circuits
Product classification code
MB type MC type
上記回路は参考例です。詳細につきましては弊社へご連絡下さい。
The above circuits are referetial examples. For details, Please contact us.
外形寸法 EXTERNAL DIMENSIONS
391
FERRITE PRODUCTS
5
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P.392 P.393 P.394P.14
推奨ランドパターン Recommended Land Patterns
Type BU05MB BU06MB BU05MC
A 5.5 max 8 max 5.3±0.5
（0.217 max） （0.315 max） （0.209±0.020）
B 5.5 max 8 max 5.0±0.3
（0.217 max） （0.315 max） （0.197±0.012）
C 6.0 max 8 max 2.7±0.2
（0.236 max） （0.315 max） （0.106±0.008）
D 1.75±0.2 2.25±0.2 pitch 1.5±0.2 pitch
（0.069±0.008） （0.089±0.008） （0.059±0.008）
E 3.5 3.5〜5.0
（0.138） （0.138±0.197） 
Fig
ピンタイプ 面実装タイプ
Pin type Surface-mount type
MB MC
Type
Unit：mm（inch）
B
D
CA
A
B
CE
D
アイテム一覧
Part Numbers
特性図
Electrical Characteristics
梱包
Packaging
信頼性
Reliability Data
使用上の注意
Precautions
セレクションガイド
Selection Guide
etc
※P.398
※営業窓口に御相談ください。Please contact our Sales Department.
Unit：mm
1.6
1.6
【BU05MC】
1
0.5
1
0.5
1
392 △
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Please read the "Notice for TAIYO YUDEN products" before using this catalog.
特性図 ELECTRICAL CHARACTERISTICS
・特性は参考例を示します。
・ご用命の際は下記項目をご指定ください。
①挿入損失（LOSS）
②定在波比（VSWR）
③使用周波数
④指定測定回路
・The following chart shows typical ranges for op-
erating characteristics.
・Please specify the following when ordering.
①loss
②standing wave ratio（VSWR）
③operating frequency
④specified test circuit
75 75
300
0
2
4
6
8
1 10 100 1000 2000
Loss
Frequency
Loss-Frequency characteristics
BU05MCTYPE
BU06MBTYPE
393
FERRITE PRODUCTS
5
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形  式 最小受注単位数 Minimum Quantity（pcs.）
Type 箱づめ Box テーピング Taping
BU05MC ー 2500
BU05MB 200 ー
BU06MB 150 ー
③テーピング寸法 Taping dimensions
（1）エンボステープ（16mm幅） Embossed tape（0.630 inches wide）
①最小受注単位数 Minimum Quantity
②テーピング材質 Tape material
④リーダー部・空部 Leader and Blank portion
80±1
（3.15±0.039）
330±2
（12.99±0.079）
13.5±1
（0.53±0.039）
Label
⑤リール寸法 Reel size
unit: mm（inch）
unit: mm（inch）
（3.15 inches or more）
Direction of tape feed
（5.91 inches or more）
Blank portions
Chip cavity Blank portions Leader
（3.15 inches or more）
⑥トップテープ強度
トップテープのはがし力は、下図矢印方向にて0.1〜0.7Nとなります。
The top tape requires a peel-off force of 0.1 to 0.7N in the direction of the
arrow as illutrated below.
Embossed Tape
Chip filled Chip
Top tape
Sprocket hole
Chip cavity
Base tape
梱包 PACKAGING
FERRITE PRODUCTS
5
395
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RELIABILITY DATA 1/2
Item
Specifled Value
Test Method and Remarks
CommonMode Choke Coils
CM01H
CommonMode Choke Coils
CM04RC
CommonMode Choke Coils
BU05MC
1.Operating Temperature
Range
ー40℃〜＋105℃ー25℃〜＋105℃Including self-generated heat
2.Storage Temperature Range ー40℃〜＋85℃ー40℃〜＋85℃ー5 to ＋40℃ in taped packaging
3.Rated current Within the specified tolerance.
The maximum DC val ue having temper ature incr ease
within specified temp erature,as detailed in individual
specification.
4.Impedance Within the specified tolerance. Measuring equipment：HP 4291A or its equivalent
Measuring frequency：Specified frequency
5.Inductance −Within the specified tolerance.
6.DC Resisitance Within the specified tolerance.
SMD transformer・Commom mode choke coil：
Measuring equipment
：
DC ohm meter
7.Resistance to flexure of
substrate
Within the specified tolerance. Refer to individual specification. According to JIS C0051
CM01H
CM04RC・BU05MC
Warp 2mm 3mm
Pressing speed
0.5mm/sec.
Duration 5±1sec.
Pressig jig
Board
8.Dielectric resistance：
between wires
100MΩ min. Applied voltage：Rated voltage
Duration：60 sec.
9.Rated voltage Within the specification.
10.Withstanding voltage：
between wires
No abnormality. Applied voltage：Regulation voltage
Duration：60 sec.
11.Resistance to vibration No abnormality observed
in appearance
Refer to individual specification. According to JIS C0040
Directions：2 hrs each in X
,
Y
,
and Z directions. Total：6 hrs
Frequency range
：
10 to 55 to 10 Hz
（
1 min.
）
Amplitude：1.5mm （Shall not exceed acceleration 196m/s2）
Mounting method
：
soldering onto printed board
Recovery ：At least 2 hrs of recovery under the stan-
dard condition after the test,followed by
the measurement within 48 hrs.
12.Solderability At least 90% of
terminal electrode is covered by
new solder.
At least 75％ of terminal electrode is covered by new solder.
CM01H
CM04RC・BU05MC
Solder
temperature
245±5℃235±5℃
Duration 3±1sec. 2±0.5sec.
Immersion
depth −
Up to 0.5mm
from terminal root
13.Resistance to solder Heat Within the specified tolerance. Refer to individual specification.
CM01H
CM04RC・BU05MC
Reflow soldering
Preheating: 150to180℃
1to2min
Peak: 255±5℃ 5sec
More than 230℃ within 40 sec
Number of reflow:
Within 2 times
Preheating: 100to150℃
1to2min
Peak: 230 to 240℃ within 5sec
More than 200℃ within 40sec
Number of reflow:
Within 2 times
Manual soldering
−
Solder temperature:
350±5℃
Duration:
3±1sec
Recovery:
1to2hrs of recovery under the
sta nda rdcon diti on af ter the
test.
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397
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RELIABILITY DATA 2/2
Item
Specifled Value
Test Method and Remarks
CommonMode Choke Coils
CM01H
CommonMode Choke Coils
CM04RC
CommonMode Choke Coils
BU05MC
14.Thermal shock Within the specified tolerance. Refer to individual specification. Accoding to JIS C0025
Conditions of 1 cycle
Step Temperature（℃）Time（min）
CM01H
CM04RC・BU05MC
CM01H
CM04RC・BU05MC
1
ー40±3℃ー25±3℃
30±3
2
Room Temp. Room Temp.
3
3 85±2℃85±3℃30±3
4
Room Temp. Room Temp.
3
Number of cycle：
CM01H： 100 cycle
CM04RC・BU05MC： 10 cycle
Recovery：Recovery under the standard condition
after removal from test chamber.
CM01H：Measuring i t more than t wo
hours and less than 48 hours.
CM04RC・BU05MC ：Leave during 1〜2
hour.
15.Loading under damp heat Within the specified tolerance. Refer to individual specification. CM01H
CM04RC・BU05MC
Temperature 60±2℃40±3℃
Humidity 90〜95％RH
Applied current
Rated current
Duration 1000±24hrs
Recovery：Recovery under the standard condition
after removal from test chamber.
CM01H：Measuring i t more than t wo
hours and less than 48 hours.
CM04RC・BU05MC ：Leave during 1〜2
hour.
16.High temperature life test
−
Refer to individual specification.
CM04RC・BU05MC
Temperature 85±3℃
Duration 1000±24hrs
Recovery：Recovery under the standard condition
after removal from test chamber.
CM01H：Measuring i t more than t wo
hours and less than 48 hours.
CM04RC・BU05MC ：Leave during 1〜2
hour.
17.
Low Temperature life Test
Within the specified tolerance. Refer to individual specification. CM01H
CM04RC・BU05MC
Temperature −40±2℃ −40±3℃
Applied current
1000±24hrs
Recovery：Recovery under the standard condition
after removal from test chamber.
CM01H：Measuring i t more than t wo
hours and less than 48 hours.
CM04RC・BU05MC ：Leave during 1〜2
hour.
18.
Loading at high temperature life test
Within the specified tolerance.
−
CM01H
Temperature 105±2℃
Applied current
Rated current
Duration 1000±24hrs
Recovery：Recovery under the standard condition
after removal from test chamber.
CM01H：Measuring i t more than t wo
hours and less than 48 hours.
CM04RC・BU05MC ：Leave during 1〜2
hour.
Note on standard condition: "standard condition"
referred to herein is defined as follows:
5 to 35℃ of temperature, 45 to 85% relative humidity and 86 to 106kPa of air pressure.
When there are questions concerning measurement results:
In order to provide correlation data, the test shall be conducted under condition of 20±2℃ of temperature, 45 to 85% relative humidity and 86 to 106kPa of air pressure.
Unless otherwise specified, all the tests are conducted under the "standard condition."
FERRITE PRODUCTS
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399
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1.6
Unit：mm
1.4
3.2
1.4
1.6
6.7
【CM04RC】 【BU05MC】
1.8 1.8 1
0.74
0.5
1
0.5
1
0.45
0.45
0.65 1.55
0.4 0.4
0.3
1.1
【CM01H】
Technical considerationsStages Precautions
CM04RC，BU05MC,CM01H
1.Circuit Design
2.PCB Design
3.Considerations for
automatic placement
4.Soldering
5.Cleaning
6.Handling
7.Storage conditions
Operating environment,
1.The products described in this specification are intended for
use in general electronic equipment,(office supply
equipment, telecommunications systems, measuring
equipment, and household equipment). They are not
intended for use in mission-critical equipment or systems
requiring special quality and high reliability (traffic systems,
safety equipment, aerospace systems, nuclear control
systems and medical equipment including life-support
systems,) where product failure might result in loss of life,
injury or damage. For such uses, contact TAIYO YUDEN
Sales Department in advance.
Land pattern design
1.Please contact any of our offices for a land pattern, and
refer to a recommended land pattern of specifications.
Adjustment of mounting machine
1.Excessive impact load should not be imposed on the
products when mounting onto the PC boards.
2.Mounting and soldering conditions should be checked
beforehand.
Reflow soldering
1.Please contact any of our offices for a reflow soldering, and
refer to the recommended condition specified.
2.This products is reflow soldering only.
3.SMD Inductors
Please do not add any stress to a product until it returns in
normal temperature after reflow soldering.
Lead free soldering
1.When using products with lead free soldering, we request to
use them after confirming of adhesion, temperature of
resistance to soldering heat, soldering etc sufficiently.
【CM04RC,BU05MC】
Recommended conditions for using a soldering iron:
Put the soldering iron on the land-pattern.
Soldering iron's temperature - Below 350 ℃
Duration - 3 seconds or less
The soldering iron should not directly touch the inductor.
【CM01H】
Please do not recommended conditions for using a soldering iron.
Cleaning conditions
1.SMD Inductors
Please contact any of our offices for a cleaning,
Handling
1.Keep the product away from all magnets and magnetic
objects.
Breakaway PC boards (splitting along perforations)
1.When splitting the PC board after mounting product, care
should be taken not to give any stresses of deflection or
twisting to the board.
2.Board separation should not be done manually, but by using
the appropriate devices.
Mechanical considerations
1.Please do not give the product any excessive mechanical
shocks.
2.SMD Inductors
Please do not add any shock and power to a product in
transportation.
Pick-up pressure
1.SMD Inductors
Please do not push to add any pressure to a winding part.
Please do not give any shock and push into a ferrite core
exposure part.
Packing
1.SMD Inductors
Please avoid accumulation of a packing box as much as
possible.
Storage
1.To maintain the solderability of terminal electrodes and to
keep the packing material in good condition, temperature
and humidity in the storage area should be controlled..
・Recommended conditions
 Ambient temperature      0〜40℃
 Humidity  Below 70% RH
The ambient temperature must be kept below 30℃. Even
under ideal storage conditions, solderability of products
electrodes may decrease as time passes. For this reason,
product should be used within one year from the time of
delivery.
In case of storage over 6 months, solderability shall be
checked before actual usage.
Surface Mounting
・ Mounting and soldering conditions should be checked beforehand.
・ Applicable soldering process to this products is reflow soldering only.
・ Recommended Land Patterns
1. When installing products, care should be taken not to apply distortion stress as it
may deform the products.
1.If products are used beyond the range of the recommended conditions, heat stresses
may deform the products, and consequently degrade the reliability of the products.
1.There is a case that a characteristic varies with magnetic influence.
1.Planning pattern configurations and the position of products should be carefully
performed to minimize stress.
1.There is a case to be damaged by a mechanical shock.
2.SMD Inductors
There is a case to be broken by the handling in transportation.
1.SMD Inductors
Damage and a characteristic can vary with an excessive shock or stress.
1.There is a case that transformation and a product of tape are damaged by
accumulation of a packing box.
1.Under a high temperature and humidity environment, problems such as reduced
solderability caused by oxidation of terminal electrodes and deterioration
oftaping/packaging materials may take place.
PRECAUTIONS