SMT Inductors
Z-transponder coils, size 7.7 x 7.4 x 2.65 mm
Series/Type:
Ordering code:
Date:
Version:
B82451L*E402
2015-11-02
01
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Identification/Classification 1
SMT Inductors
(header 1 + top left bar):
Identification/Classification 2
Z-transponder coils, size 7.7 x 7.4 x 2.65 mm
(header 2 + bottom left header bar):
Ordering code: (top right header bar)
Series/Type: (bottom right header bar)
B82451L*E402
Preliminary data (optional):
Department:
MAG IN
Date:
2015-11-02
Version:
01
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.
SMT Inductors
Z-transponder coils, size 7.7 x 7.4 x 2.65 mm
Rated inductance 1.0 … 10 mH
Sensitivity 7 … 23 mV/µT
B82451L*E402
Construction
■
■
■
Ferrite core
Injection moulded base
Winding laser welded to terminals
Features
■
■
■
■
Ruggedized design to pass drop testing
AEC-Q200 qualified
Suitable for lead-free reflow soldering
RoHS-compatible
Applications
■
■
Car access system PEPS (Passive Entry, Passive Start)
RFID (radio-frequency identification) systems at 125 kHz
Terminals
■
■
Base material CuSn6
Plating:annealed Sn
Marking
■
■
Marking on component:
L value in nH, “E402”, date of manufacture (YWWD)
Minimum data on reel:
Manufacturer, L value, ordering code, quantity, date of packing
Delivery mode and packing unit
■
■
16-mm blister tape, wound on 330-mm Ø reel
Packing unit: 1500 pcs./reel
MAG IN
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2015-11-02
Page 2 of 6
SMT Inductors
Z-transponder coils, size 7.7 x 7.4 x 2.65 mm
Dimensional drawing and layout recommendation
B82451L*E402
All dimensions in mm
Tolerances
±0.2
mm
unless otherwise noted.
Taping
All dimensions in mm
MAG IN
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2015-11-02
Page 3 of 6
SMT Inductors
Z-transponder coils, size 7.7 x 7.4 x 2.65 mm
Technical data and measuring conditions
Rated inductance L
R
and tolerance
Q factor Q
min
Sensitivity S
typ
Self resonance frequency f
res,typ
DC resistance R
typ
Solderability (lead-free)
B82451L*E402
Measured with LCR meter Agilent 4284A at frequency f
L
,
0.5 V, +20 °C
Measured with Agilent 4294A at frequency f
Q
,
RMS voltage 500 mV, +20 °C
Measured with Helmholtz coil test setup at 125 kHz
Measured with HP8753
Measured at +20 °C
Dip and look method Sn95.5Ag3.8Cu0.7:
+(245
±5)
°C, (3
±0.3)
s
Wetting of soldering area
≥
90%
(based on IEC 60068-2-58)
+260 °C, 40 s (as referenced in J-STD-020D)
−40 °C to 85 °C (including self-temperature rise)
< ±3%, reference temperature +20 °C
Resistance to soldering heat
Operating temperature range
Inductance drift over operating
temperature range and after 3
reflow cycles and life tests (2000hrs
@125°C, 2000 Thermal Shocks,
2000hrs 85°C/85%r.h.)
Climatic category
Storage conditions
Weight
40/85/56 (to IEC 60068-1)
Mounted: –55 °C … +85 °C
Packaged: –25 °C … +40 °C,
≤
75% RH
Approx. 1.0 g
Characteristics and ordering codes
L
R
mH
1.0
2.36
4.66
4.75
4.81
7.8
10.0
±3%
Tolerance
f
L
, f
Q,
f
S
kHz
125
55
55
58
58
58
50
50
Q
typ
(±20%)
S
typ
(±20%)
mV/µT
7
11
16
16
16
20
23
f
res,typ
(±20%)
MHz
3.0
2.2
1.2
1.2
1.2
0.90
0.85
R
typ
(±20%)
Ω
9.0
20.0
38.5
40.3
40.7
84.5
104.0
Ordering code
B82451L1004E402
B82451L2364E402
B82451L4664E402
B82451L4754E402
B82451L4814E402
B82451L7804E402
B82451L1005E402
MAG IN
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2015-11-02
Page 4 of 6
Cautions and warnings
Please note the recommendations in our 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 glued on 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.
Display of ordering codes for EPCOS products
The ordering code for one and the same EPCOS product can be represented differently in data
sheets, data books, other publications, on the EPCOS website, or in order-related documents such
as shipping notes, order confirmations and product labels.
The varying representations of the
ordering codes are due to different processes employed and do not affect the specifications
of the respective products.
Detailed information can be found on the Internet under
www.epcos.com/orderingcodes.
MAG IN
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2015-11-02
Page 5 of 6
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