B78108S1823J EPCOS Inc, B78108S1823J Datasheet - Page 12
![CHOKE RF 82UH 390MA AXIAL](/photos/29/25/292535/b78_sml.jpg)
B78108S1823J
Manufacturer Part Number
B78108S1823J
Description
CHOKE RF 82UH 390MA AXIAL
Manufacturer
EPCOS Inc
Series
BCr
Type
Ferrite Corer
Specifications of B78108S1823J
Inductance
82µH
Tolerance
±5%
Current
390mA
Dc Resistance (dcr)
1.540 Ohm Max
Q @ Freq
35 @ 2.52MHz
Self Resonant Freq
6MHz
Package / Case
Axial
Mounting Type
Through Hole
Frequency - Test
2.52MHz
Material - Core
Ferrite Drum
Applications
General Purpose
Dimensions
4 mm Dia. x 53 mm L
Test Frequency
2.52 MHz
Maximum Dc Current
390 mA
Maximum Dc Resistance
1.54 Ohms
Self Resonant Frequency
6 MHz
Q Minimum
35
Operating Temperature Range
- 55 C to + 125 C
Termination Style
Axial
Inductance Tolerance
± 5%
Dc Resistance Max
1.54ohm
Dc Current Rating
390mA
Q Test Frequency
2.52MHz
Inductor Case Style
Axial Leaded
No. Of Pins
2
Svhc
No SVHC (18-Jun-2010)
Rohs Compliant
Yes
Body Diameter
4mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Shielding
-
Current - Saturation
-
Current - Temperature Rise
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
B78108S1823J000
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
B78108S1823J000
Manufacturer:
EPCOS/爱普科斯
Quantity:
20 000
It is, therefore, necessary to find out the internal impedances so that optimum filter circuit designs
as well as economical solutions can be implemented.
The internal impedances of the power networks under consideration are usually known from calcu-
lations and extensive measurements, whereas the impedances of interference sources or disturbed
equipment are, in most cases, not or only inadequately known.
For this reason, it is impossible to design the most suitable filter solution without measuring the
equipment characteristics. In this context, we offer all our customers the competent assistance of
our skilled staff, both on-site and in our EMC laboratory in Regensburg (also see
vices offered”, page
3
To comply with currently valid regulations, a frequency range of 150 kHz to 1000 MHz has to be
taken into consideration, in most cases, in order to ensure electromagnetic compatibility; in addition,
however, factors such as low-frequency line interference should be considered.
EMC components must thus have favorable RF characteristics and are ususally required to be ef-
fective over a broad frequency range.
For individual components (inductors) the RF characteristics are specified by stating the impedance
as a function of frequency.
4
When designing filter circuits using individual components, observe the following basic rules:
Fig. 10
General Technical Information
The components should be arranged along the lines (see example in
and inductive coupling between components and between filter inputs and outputs.
As insertion loss of a filter circuit in the MHz range is mainly determined by the capacitors con-
nected to ground, the connecting leads of these capacitors should be as inductance-free as pos-
sible, i.e. short.
Filter circuits which are to be installed in devices with limited space must be shielded.
Selection criteria for EMC components
Arrangement of EMC components
Correct arrangement of filter components, e.g. on a PC board
32).
Choke
int
20
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fig.
10) to avoid capacitive
chapter on “Ser-