!Caution /Notice
17
2
!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
■ !Caution (Rating)
1. Rated Current
Operating current should not exceed the rated
value. Even if operating current is under the
rated value, adequate ventilation is required to
avoid excessive heat generated within the product
(choke coil) and from surrounding heat sources.
If exceeding these conditions, excessive heat may
cause fumes or permanent damage to the product.
Please ensure that product (choke coil) is
evaluated and confirmed against the specification
when it is mounted in your final assembled product.
-> Winding temperature should be less than
120 degree C.
*As for FKOB series winding temperature should be
less than 95 dgree C.
Maximum allowable temperature at the surface of
coil (ambient temperature + winding temperature
rise) is in accordance with each safety standard
applicable to final assembeld product.
When the temperature at winding exceeds maximum
allowable temperature of safety standard, the
rated current should be derated.
2. Inrush Current
Inrush current should not exceed 10 times rated
current within 1/4 cycle of 50/60Hz commercial
power line. Inrush current should be limited to a
minimum of 10 seconds after last inrush.
If these conditions are exceeded, excessive heat may
cause fumes or permanent damage to the component,
or at worst cause ignition.
■ Notice (Storage and Operating Condition)
1. Soldering Conditions
· Rosin-based flux should be used. Do not use strong
acidic flux with halide content exceeding 0.2wt%
(chlorine conversion value)
· Use 63/37 solder (Sn/Pb = 63/37) or 60/40 solder
(Sn/Pb = 60/40). In case of lead-free solder, use
Sn-3.0Ag-0.5Cu solder
2. Cleaning
Avoid cleaning product due to non-waterproof
construction.
3. Storage and Handling Requirements
Product should be used within 12 months after receiving.
Solderability should be checked if this period is
exceeded.
(1) Flux, Solder
(1) Storage period
Storage Temperature: -10 to 40 °C
Relative humidity: 30 to 70%
Avoid sudden changes in temperature and humidity.
Don't keep products in corrosive gases such as sulfur,
chlorine gas or acid, or it may cause oxidation of lead
terminals resulting in poor solderability or corrosion of
component windings.
(2) Storage conditions
Care should be taken when transporting or handling
product to avoid excessive vibration or mechanical shock.
For additional mounting methods, please contact Murata.
(3) Handling conditions
(2) Flow soldering profile
Standard profile Limit profile
Sn/Pb = 60/40, Sn/Pb = 63/37
Sn-3.0Ag-0.5Cu solder
Soldering temp.
240-260°C
Soldering time
5s max.
Soldering temp.
250±2°C
Soldering time
4-6s
Soldering temp.
265±3°C
Soldering time
5s
Cycle of flow
2 times
Pre-heating
Soldering
Gradual cooling
(in air)
150°C
300
250
200
150
100
50
Temperature (°C)
60s min. Soldering time
Soldering temperature
■ Notice (Soldering and Mounting)
Magnetic Flux Leakage
Choke coils generate small amounts of magnetic flux
leakage that may adversely affect equipment operation
according to component arrangement.
Testing should be completed on final assembly to
ensure equipment performance is not affected.
■ Notice (Rating)
Coil Humming Noise
Magnetic flux generated between coil and core or
between the choke coil windings creates repulsive
power between the coil windings. This repulsive
power causes the coil winding to vibrate and create
a humming noise. The amount of hum produced by the
coil is proportionate to the amount of harmonic
distortion generated by the operating current. This
does not influence the electrical performance of
the coils, but it should be considered and tested
in actual circuit application.
Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc.
This catalog has only typical specifications. Therefore, you are requested to approve our product specifications or to transact the approval sheet for product specifications before ordering.
!Note C09E9.pdf 05.2.16