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B78108S, B78148S Series Datasheet

EPCOS (TDK)

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Datasheet

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Inductors
RF chokes, BC series
Series/Type: B78108S, B78148S
Date: June 2012
EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the information
contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
206/12
Please read Cautions and warnings and
Important notes at the end of this document.
BC chokes (Bobbin Core)
Rated inductance 1 ... 4700 μH
Rated current 55 ... 1200 mA
Construction
Ferrite drum core
Winding: enamel copper wire
Flame-retardant lacquer coating
Features
Wide inductance range
Suitable for general-purpose application
Special versions available
Suitable for wave soldering
RoHS-compatible
Applications
RF blocking and filtering
Decoupling and interference suppression
For antenna systems, automotive electronics,
energy-saving lamps, entertainment electronics
Terminals
Central axial leads (B78108S)
Radially bent to 5 mm lead spacing (B78148S)
Base material Cu
Electroplated with nickel and pure tin
Marking
Inductance indicated by color bands to IEC 60062
Delivery mode and packing units
Taped, Ammo and reel packing
Packing units:
Ammo
(pcs./pack.)
Reel
(pcs./reel)
Axial 2500 5000
Radial 2500 2000
B78108S
B78148S
B78108S, B78148SRF chokes
BC series, 4 x 9.2 (mm)
306/12
Please read Cautions and warnings and
Important notes at the end of this document.
Dimensional drawings
B78108S (axial leads, taped) Dimensions in mm
B78148S (central radial leads, taped)
Packing
9.2 max.
5±0.25
11.5 max.
IND0429-B-E
ø4 max.
ø0.8 max.
6±0.5
65±1
lacquered
(IEC 60294)
3.5 min.
53±2
5±0.25
Minimum lead spacing 12.5 mm
IND0629-B
0.7±0.2
IND0633-N-E
2 max.2 max.
16±0.5
30.5 max.
6 min.
0.5 max.
3.8±0.7
12.7±0.3
1.3 max. 1.3 max.
ø4±0.2
+1
0.5
18
_
+0.75
0.5
9
_
0.1
5
+0.6
_
ø4 max.
9.2 max.
(IEC 60294)
11.5 max.
lacquered
0.8 max.
insulated
Thickness of tape
1ø360
_
n
w
ø30.5±0.15
ø82+1
ø90
30
30
30
Label
IND0452-V-E
n (mm): Axial 72 +1, radial 42 +1
w (mm): Axial 84 max., radial 54 max.
L u W u H (max. mm):
Axial: 275 u 80 u 140, radial: 340 u 50 u 210
B78108S, B78148SRF chokes
BC series, 4 x 9.2 (mm)
406/12
Please read Cautions and warnings and
Important notes at the end of this document.
Technical data and measuring conditions
Mounting information
When bending the leads, take care that the start-of-winding areas at the face ends (protected by
glue and lacquer) are not subjected to any mechanical stress.
Rated inductance LRMeasured with LCR meter Agilent 4284A
or impedance analyzer Agilent 4294A
Measuring frequency: LR d 10 PH= 1 MHz
10 PH < LR d 4700 PH = 100 kHz
Measuring current: d 1 mA
Measuring temperature: +20 °C
Q factor Qmin Measured with precision impedance analyzer Agilent 4294A,
+20 °C
Rated temperature TR+40 qC
Rated current IRMaximum permissible DC current at rated temperature
Inductance decrease 'L/L0d10% (referred to initial value) at IR, +20 qC
DC resistance Rmax Measured at 20 qC
Resonance frequency fres,min Measured with Agilent 4294A or 8753ES, +20 °C
Solderability (lead-free) Sn95.5Ag3.8Cu0.7: +(245 r5) °C, (3 r0.3) s
Wetting of soldering area t90%
(to IEC 60068-2-20, test Ta)
Resistance to soldering heat +(260 r5) °C, 10 s (to IEC 60068-2-20, test Tb)
Tensile strength of leads t20 N (to IEC 60068-2-21, test Ua)
Climatic category 55/125/56 (to IEC 60068-1)
Storage conditions Mounted: –55 °C … +125 °C
Packaged: –25 °C … +40 °C, d75% RH
Weight Approx. 0.38 g
B78108S, B78148SRF chokes
BC series, 4 x 9.2 (mm)
506/12
Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics and ordering codes
BC chokes with temperature range up to +140 °C on request.
BC chokes up to 33 PH with higher resonance frequency on request.
1) Closer tolerances on request.
2) Replace the * by code number »0« for axial taping or by »4« for radial taping.
3) For Ammo pack the last digit has to be a »9«. Example: B78108S1102K009
LR
PH
Tolerance1) Qmin f
Q
MHz
IR
mA
Rmax
:
fres, min
MHz
Ordering code 2)
(reel packing)3)
1.0 r10% K 55 7.96 1200 0.16 205 B781*8S1102K000
1.2 55 7.96 1150 0.18 185 B781*8S1122K000
1.5 55 7.96 1100 0.20 165 B781*8S1152K000
1.8 55 7.96 1030 0.22 155 B781*8S1182K000
2.2 55 7.96 1000 0.25 140 B781*8S1222K000
2.7 60 7.96 940 0.26 125 B781*8S1272K000
3.3 60 7.96 900 0.29 115 B781*8S1332K000
3.9 60 7.96 850 0.31 105 B781*8S1392K000
4.7 60 7.96 820 0.34 95 B781*8S1472K000
5.6 60 7.96 780 0.38 85 B781*8S1562K000
6.8 65 7.96 670 0.51 75 B781*8S1682K000
8.2 65 7.96 690 0.48 50 B781*8S1822K000
10 70 2.52 680 0.49 35 B781*8S1103K000
12 70 2.52 650 0.55 30 B781*8S1123K000
15 60 2.52 610 0.60 20 B781*8S1153K000
18 60 2.52 580 0.67 17 B781*8S1183K000
22 55 2.52 560 0.74 13 B781*8S1223K000
27 55 2.52 530 0.83 10 B781*8S1273K000
33 55 2.52 500 0.92 9.0 B781*8S1333K000
39 50 2.52 470 1.02 8.0 B781*8S1393K000
^
B78108S, B78148SRF chokes
BC series, 4 x 9.2 (mm)
606/12
Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics and ordering codes
BC chokes with temperature range up to +140 °C on request.
1) Closer tolerances on request.
2) Replace the * by code number »0« for axial taping or by »4« for radial taping.
3) For Ammo pack the last digit has to be a »9«. Example: B78108S1473J009
LR
PH
Tolerance1) Qmin f
Q
MHz
IR
mA
Rmax
:
fres, min
MHz
Ordering code 2)
(reel packing)3)
47 r5% J 45 2.52 450 1.10 7.5 B781*8S1473J000
56 40 2.52 430 1.23 7.0 B781*8S1563J000
68 40 2.52 410 1.35 6.5 B781*8S1683J000
82 35 2.52 390 1.54 6.0 B781*8S1823J000
100 70 0.796 370 1.70 5.0 B781*8S1104J000
120 70 0.796 300 2.40 4.5 B781*8S1124J000
150 70 0.796 280 2.80 4.2 B781*8S1154J000
180 70 0.796 270 3.00 3.9 B781*8S1184J000
220 70 0.796 250 3.30 3.7 B781*8S1224J000
270 70 0.796 200 5.70 2.8 B781*8S1274J000
330 70 0.796 190 6.40 2.7 B781*8S1334J000
390 70 0.796 180 7.00 2.4 B781*8S1394J000
470 70 0.796 170 7.90 2.2 B781*8S1474J000
560 60 0.796 160 8.80 2.0 B781*8S1564J000
680 55 0.796 150 10.0 1.9 B781*8S1684J000
820 50 0.796 140 12.0 1.6 B781*8S1824J000
1000 50 0.252 130 14.0 1.6 B781*8S1105J000
1200 50 0.252 115 17.5 1.3 B781*8S1125J000
1500 50 0.252 100 23.0 1.25 B781*8S1155J000
1800 50 0.252 95 26.0 1.2 B781*8S1185J000
2200 40 0.252 80 34.7 1.1 B781*8S1225J000
2700 40 0.252 75 40.0 1.0 B781*8S1275J000
3300 40 0.252 62 59.5 0.9 B781*8S1335J000
3900 40 0.252 59 66.0 0.8 B781*8S1395J000
4700 35 0.252 55 78.0 0.7 B781*8S1475J000
^
B78108S, B78148SRF chokes
BC series, 4 x 9.2 (mm)
706/12
Impedance |Z| versus frequency f
measured with impedance analyzer Agilent
4294A or S-parameter network analyzer
Agilent 8753ES, typical values at +20 °C
Q factor versus frequency f
measured with impedance analyzer
Agilent 4294A, typical values at +20 °C
Inductance L versus DC load current IDC
measured with LCR meter Agilent 4284A,
typical values at +20 °C
Current derating Iop/IR
versus ambient temperature TA
(rated temperature TR = +40 qC)
IND0122-K
Z
10
0
10
5
f
10
1
10
2
10
3
10
4
10
5
10
6
Ω
1 μH
10 μH
100 μH
Hz
6
10 10
7
10
8
10
9
1000 μH
4700 μH
||
B781*8S
4
10
f
Q
0
IND0124-C
4700 μH
1000 μH
100 μH
10 μH
1 μH
Hz10
5
10
6
10
7
10
8
50
100
150
B781*8S
IND0123-X
L
10 10
I
10 10
0
10
1
DC
10
0
10
1
10
2
10
3
10
4
1000 μH
100 μH
10 μH
1 μH
4700 μH
A
μH
_
21
_
1
_
B781*8S
IND0552-S-E
0
0
op
I
R
I
T
A
20 40 60 80 100 140
0.2
0.4
0.6
0.8
1.0
1.2
C
˚
B78108S, B78148SRF chokes
BC series, 4 x 9.2 (mm)
806/12
Cautions and warnings
Please note the recommendations in our Inductors data book (latest edition) and in the data
sheets.
Particular attention should be paid to the derating curves given there.
The soldering conditions should also be observed. Temperatures quoted in relation to wave
soldering refer to the pin, not the housing.
If the components are to be washed varnished it is necessary to check whether the washing
varnish agent that is used has a negative effect on the wire insulation, any plastics that are used,
or on glued joints. In particular, it is possible for washing varnish agent residues to have a
negative effect in the long-term on wire insulation.
Washing processes may damage the product due to the possible static or cyclic mechanical
loads (e.g. ultrasonic cleaning). They may cause cracks to develop on the product and its parts,
which might lead to reduced reliability or lifetime.
The following points must be observed if the components are potted in customer applications:
Many potting materials shrink as they harden. They therefore exert a pressure on the plastic
housing or core. This pressure can have a deleterious effect on electrical properties, and in
extreme cases can damage the core or plastic housing mechanically.
It is necessary to check whether the potting material used attacks or destroys the wire
insulation, plastics or glue.
The effect of the potting material can change the high-frequency behaviour of the components.
Ferrites are sensitive to direct impact. This can cause the core material to flake, or lead to
breakage of the core.
Even for customer-specific products, conclusive validation of the component in the circuit can
only be carried out by the customer.
Please read Cautions and warnings and
Important notes at the end of this document.
906/12
Important notes
The following applies to all products named in this publication:
1. Some parts of this publication contain statements about the suitability of our products for certain areas
of application. These statements are based on our knowledge of typical requirements that are often placed
on our products in the areas of application concerned. We nevertheless expressly point out that such
statements cannot be regarded as binding statements about the suitability of our products for a
particular customer application. As a rule we are either unfamiliar with individual customer applications or
less familiar with them than the customers themselves. For these reasons, it is always ultimately incumbent
on the customer to check and decide whether a product with the properties described in the product
specification is suitable for use in a particular customer application.
2. We also point out that in individual cases, a malfunction of electronic components or failure before
the end of their usual service life cannot be completely ruled out in the current state of the art, even
if they are operated as specified. In customer applications requiring a very high level of operational safety
and especially in customer applications in which the malfunction or failure of an electronic component could
endanger human life or health (e.g. in accident prevention or life-saving systems), it must therefore be
ensured by means of suitable design of the customer application or other action taken by the customer (e.g.
installation of protective circuitry or redundancy) that no injury or damage is sustained by third parties in the
event of malfunction or failure of an electronic component.
3. The warnings, cautions and product-specific notes must be observed.
4. In order to satisfy certain technical requirements, some of the products described in this publication
may contain substances subject to restrictions in certain jurisdictions (e.g. because they are
classed as hazardous). Useful information on this will be found in our Material Data Sheets on the Internet
(www.tdk-electronics.tdk.com/material). Should you have any more detailed questions, please contact our
sales offices.
5. We constantly strive to improve our products. Consequently, the products described in this publication
may change from time to time. The same is true of the corresponding product specifications. Please
check therefore to what extent product descriptions and specifications contained in this publication are still
applicable before or when you place an order.
We also reserve the right to discontinue production and delivery of products. Consequently, we
cannot guarantee that all products named in this publication will always be available. The aforementioned
does not apply in the case of individual agreements deviating from the foregoing for customer-specific
products.
6. Unless otherwise agreed in individual contracts, all orders are subject to our General Terms and
Conditions of Supply.
7. Our manufacturing sites serving the automotive business apply the IATF 16949 standard. The IATF
certifications confirm our compliance with requirements regarding the quality management system in the
automotive industry. Referring to customer requirements and customer specific requirements (“CSR”) TDK
always has and will continue to have the policy of respecting individual agreements. Even if IATF 16949
may appear to support the acceptance of unilateral requirements, we hereby like to emphasize that only
requirements mutually agreed upon can and will be implemented in our Quality Management
System. For clarification purposes we like to point out that obligations from IATF 16949 shall only become
legally binding if individually agreed upon.
8. The trade names EPCOS, CeraCharge, CeraDiode, CeraLink, CeraPad, CeraPlas, CSMP, CTVS,
DeltaCap, DigiSiMic, ExoCore, FilterCap, FormFit, LeaXield, MiniBlue, MiniCell, MKD, MKK, MotorCap,
PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PowerHap, PQSine, PQvar, SIFERRIT, SIFI, SIKOREL,
SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, ThermoFuse, WindCap are trademarks registered
or pending in Europe and in other countries. Further information will be found on the Internet at www.tdk-
electronics.tdk.com/trademarks.
Release 2018-10

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