NL565050 TDK Corp., NL565050 Datasheet - Page 7

• Manufacturer Part Number: NL565050
• Description: Wire-wound Surface Mount Small Inductors For Signal Lines And Dc Power Lines
• Manufacturer: TDK Corp.

Latest series
development concept
Industry's first efforts
Original low-Rdc structure using magnetic
particle compound resin
NLFC
For the NLFC series, which responds to low-Rdc needs with
unprecedented effectiveness, TDK's original inductance
characteristic reinforcement measure is taken where mix-
ing ferrite particles with formed mold resin optimizes the
material properties and shapes of the drum-shaped cores.
Adding ferrite particles, a magnetic element, to the mold
resin adhering to both sides of the drum core, and cover-
ing the whole coil body, a closed magnetic path structure
equivalent to the coil with the pot-shaped core was realiz-
ed. As a result, the magnetic flux occurring on the coil is
reinforced, offering a similar inductance value to the same
shape conventional product molded with non-magnetic
resin, without enlarging its core shape in a coil of a larger
diameter (smaller number of windings).
Establishing the industry's first resource-saving
and waste-free consistent production line
NLV,NLCV,NLFV
Thermosetting resin, which has been widely used, has the
disadvantage of generating unrecycleable waste mate-
rials (runners, burrs on the gates, etc.) resulting from pro-
Comparison of mold resins
Series
Mold resin
Resin color
Marking
Structural common specification
Core material : Ferrite
Winding : 2 UEW
Internal connection : Soldering (Sn-90Pb*)
Connection terminals : Copper alloy
Coating of connection terminals : Sn (lead-free)
Characteristic measurement : Automated total measurement
Appearance test : Visual examination (total inspection)
*
High-melting solder conforming to the RoHS Directive exemption application regulation)
series
Thermosetting resin
Blue
Print
NL
NLC
Forming closed magnetic path
structures equivalent to those of
the pot-shaped cores
Wire-wound Surface Mount Small Inductors
series
Thermoplastic resin
Black
Laser print or no print
NLV
For Signal Lines And DC Power Lines
NLCV
NL/NLV, NLC/NLCV,
TDK CORPORATION
Thermosetting resin
+ Ferrite particles
Brown
Print
NLFC
duction processes. These have been collected and dis-
posed of, so creating an environmental burden.
On the other hand, thermoplastic resin, because of its
physical properties, is easy to collect and reuse, allowing
recycling of all runner parts, which comprises a large quan-
tity of the material, eradicating unwanted burrs by optimiz-
ing viscosity control. Also, by skillfully utilizing the advan-
tages of thermoplastic resin, allowing reversible control of
viscosity through temperature control, the leadtimes of
conventional production lines can be greatly reduced
when thermosetting resin is used.
In developing the NLV, NLCV, and NLFV series, new proc-
essing methods and process control technologies were
developed to make full use of the advantages of thermo-
plastic resin. A high efficiency, consistent, production line
was built which permitted a great reduction in production
leadtime and increased power-saving, not to mention the
ability to recycle the runner part.
Also, as shown in the model above, for the NLFV series,
characteristic improvements, such as magnetic charac-
teristic reinforcement of ferrite particles, and optimization
of particle diameter and mix ratio, were promoted, realiz-
ing further reduction of Rdc while maintaining compati-
bility with the early series (NLFC) in major characteristics
and shape.
NLFC/NLFV
series
Thermoplastic resin
+Ferrite particles
Dark brown
No print
NLFV
Reinforcing effective permeability
and magnetic flux
Sophisticated uniform
decentralization and
optimization of content ration
Optimizing particle diameters
: Thermoplastic mold resin