It is recommended that the temperature of the component does not exceed +125 °C under worst
case conditions
sectional drawing A-A
Ambient Temperature (referring
to I
R
)
Operating Temperature
Storage Conditions (in original
packaging)
Moisture Sensitivity Level (MSL)
Scale - 5:1
-40 up to +85 °C
-40 up to +125 °C
< 40 °C ; < 75 % RH
1
Test conditions of Electrical Properties: +20 °C, 33 % RH if not specified differently
Product Marking:
Marking
1R8 (Inductance Code)
CHECKED
REVISION
DATE (YYYY-MM-DD)
GENERAL TOLERANCE
PROJECTION
METHOD
SiBo
DESCRIPTION
004.002
2020-05-12
DIN ISO 2768-1m
WE-LQ SMT Power Inductor
Würth Elektronik eiSos GmbH & Co. KG
EMC & Inductive Solutions
Max-Eyth-Str. 1
74638 Waldenburg
Germany
Tel. +49 (0) 79 42 945 - 0
www.we-online.com
eiSos@we-online.com
ORDER CODE
7440450018
SIZE/TYPE
BUSINESS UNIT
STATUS
PAGE
1812
eiSos
Valid
1/6
This electronic component has been designed and developed for usage in general electronic equipment only. This product is not authorized for use in equipment where a higher safety standard and reliability standard is especially required or where a failure of the product is reasonably expected to cause severe personal injury or death, unless the parties have executed an agreement specifically governing such use. Moreover Würth Elektronik eiSos GmbH
& Co KG products are neither designed nor intended for use in areas such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network etc.. Würth Elektronik eiSos GmbH & Co KG must be informed about the intent of such usage before the design-in stage. In addition, sufficient reliability evaluation checks for safety
must be performed on every electronic component which is used in electrical circuits that require high safety and reliability functions or performance.
Typical Inductance vs. Current Characteristics:
2.0
Typical Impedance Characteristics:
10000
1.8
1.6
1000
1.4
Inductance [µH]
1.2
Impedance [Ω]
1.0
100
0.8
0.6
10
0.4
0.2
1
0.0
0.0
2.0
4.0
6.0
Current [A]
8.0
10.0
0.1
1
10
Frequency [MHz]
Z
CHECKED
REVISION
DATE (YYYY-MM-DD)
GENERAL TOLERANCE
PROJECTION
METHOD
100
1000
SiBo
DESCRIPTION
004.002
2020-05-12
DIN ISO 2768-1m
WE-LQ SMT Power Inductor
Würth Elektronik eiSos GmbH & Co. KG
EMC & Inductive Solutions
Max-Eyth-Str. 1
74638 Waldenburg
Germany
Tel. +49 (0) 79 42 945 - 0
www.we-online.com
eiSos@we-online.com
ORDER CODE
7440450018
SIZE/TYPE
BUSINESS UNIT
STATUS
PAGE
1812
eiSos
Valid
2/6
This electronic component has been designed and developed for usage in general electronic equipment only. This product is not authorized for use in equipment where a higher safety standard and reliability standard is especially required or where a failure of the product is reasonably expected to cause severe personal injury or death, unless the parties have executed an agreement specifically governing such use. Moreover Würth Elektronik eiSos GmbH
& Co KG products are neither designed nor intended for use in areas such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network etc.. Würth Elektronik eiSos GmbH & Co KG must be informed about the intent of such usage before the design-in stage. In addition, sufficient reliability evaluation checks for safety
must be performed on every electronic component which is used in electrical circuits that require high safety and reliability functions or performance.
Packaging Specification - Tape and Reel: [mm]
P0
D0
P2
E1
T
W1
close to center
B
D
W3
F
C
B0
E2
W
top cover
tape
A0
P1
K0
T2
T1
W2
detail B
End
Feeding direction
Start
Carrier tape
Cover tape
B
Cover Tape
Chip Cavity
Sprocket Hole
No Component
min. 160 mm
Components
No Component
min. 100 mm
Cover Tape
min. 400 mm
tolerance
Tape width
12 mm
Embossment
Packaging is referred to the international standard IEC 60286-3:2019
tolerance
size
A0 B0 W
typ. typ. +0,3
1812 3,70 4,80 12,00
-0,1
T
T1 T2 K0 P0 P1 P2 D0
typ. typ. typ. typ. ±0,1 ±0,1 ±0,5 +0,1
0,25 0,10 3,35 3,00 4,00 8,00 2,00 1,50
-0,0
E1
+0,1
1,75
-0,0
E2
F
Tape Type 2a
min. ±0,05
10,25 5,50 Polystyrene
VPE / packaging unit
pcs.
500
A
±2,0
178,00
B
min.
1,50
C
±0,8
13,00
D
min.
20,20
N
N
min.
50,00
W1
+1,5
12,40
A
W2
max.
18,40
W3
min.
11,90
W3
max.
15,40
CHECKED
REVISION
DATE (YYYY-MM-DD)
GENERAL TOLERANCE
PROJECTION
METHOD
SiBo
004.002
2020-05-12
DIN ISO 2768-1m
165° - 180°
Würth Elektronik eiSos GmbH & Co. KG
EMC & Inductive Solutions
Max-Eyth-Str. 1
74638 Waldenburg
Germany
Tel. +49 (0) 79 42 945 - 0
www.we-online.com
eiSos@we-online.com
DESCRIPTION
WE-LQ SMT Power Inductor
ORDER CODE
7440450018
SIZE/TYPE
BUSINESS UNIT
STATUS
PAGE
Pull-of force
Tape width
12 mm
0,1 N - 1,3 N
1812
eiSos
Valid
3/6
This electronic component has been designed and developed for usage in general electronic equipment only. This product is not authorized for use in equipment where a higher safety standard and reliability standard is especially required or where a failure of the product is reasonably expected to cause severe personal injury or death, unless the parties have executed an agreement specifically governing such use. Moreover Würth Elektronik eiSos GmbH
& Co KG products are neither designed nor intended for use in areas such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network etc.. Würth Elektronik eiSos GmbH & Co KG must be informed about the intent of such usage before the design-in stage. In addition, sufficient reliability evaluation checks for safety
must be performed on every electronic component which is used in electrical circuits that require high safety and reliability functions or performance.
Classification Reflow Profile for SMT components:
Classification Reflow Soldering Profile:
Profile Feature
Preheat Temperature Min
Preheat Temperature Max
Value
T
s min
150 °C
T
s max
200 °C
t
s
T
L
t
L
T
p
t
p
60 - 120 seconds
3 °C/ second max.
217 °C
60 - 150 seconds
T
p
≤ T
c
, see Table below
20 - 30 seconds
6 °C/ second max.
8 minutes max.
T
p
Max. Ramp Up Rate
Max. Ramp Down Rate
T
L
T
s max
t
L
t
p
T
C
–5°C
Preheat Time t
s
from T
s min
to T
s max
Ramp-up Rate (T
L
to T
P
)
Liquidous Temperature
Time t
L
maintained above T
L
Peak package body temperature
Time within 5°C of actual peak
temperature
Temperature
Preheat Area
T
s min
t
S
Ramp-down Rate (T
P
to T
L
)
Time 25°C to peak temperature
refer to IPC/ JEDEC J-STD-020E
Package Classification Reflow Temperature (T
c
):
Properties
25
Time 25°C to Peak
Volume mm³
<350
Volume mm³
350-2000
260 °C
250 °C
245 °C
Volume mm³
>2000
260 °C
245 °C
245 °C
Time
PB-Free Assembly | Package Thickness
260 °C
< 1.6 mm
PB-Free Assembly | Package Thickness
260 °C
1.6 mm - 2.5 mm
PB-Free Assembly | Package Thickness
250 °C
≥ 2.5 mm
refer to IPC/ JEDEC J-STD-020E
CHECKED
REVISION
DATE (YYYY-MM-DD)
GENERAL TOLERANCE
PROJECTION
METHOD
SiBo
DESCRIPTION
004.002
2020-05-12
DIN ISO 2768-1m
WE-LQ SMT Power Inductor
Würth Elektronik eiSos GmbH & Co. KG
EMC & Inductive Solutions
Max-Eyth-Str. 1
74638 Waldenburg
Germany
Tel. +49 (0) 79 42 945 - 0
www.we-online.com
eiSos@we-online.com
ORDER CODE
7440450018
SIZE/TYPE
BUSINESS UNIT
STATUS
PAGE
1812
eiSos
Valid
4/6
This electronic component has been designed and developed for usage in general electronic equipment only. This product is not authorized for use in equipment where a higher safety standard and reliability standard is especially required or where a failure of the product is reasonably expected to cause severe personal injury or death, unless the parties have executed an agreement specifically governing such use. Moreover Würth Elektronik eiSos GmbH
& Co KG products are neither designed nor intended for use in areas such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network etc.. Würth Elektronik eiSos GmbH & Co KG must be informed about the intent of such usage before the design-in stage. In addition, sufficient reliability evaluation checks for safety
must be performed on every electronic component which is used in electrical circuits that require high safety and reliability functions or performance.
Cautions and Warnings:
The following conditions apply to all goods within the product series of WE-LQ of Würth
Elektronik eiSos GmbH & Co. KG:
General:
• This electronic component is designed and manufactured for use in general electronic equipment.
• Würth Elektronik must be asked for written approval (following the PPAP procedure) before incorporating the components into any
equipment in fields such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control,
ship control), transportation signal, disaster prevention, medical, public information network etc. where higher safety and reliability are
especially required and/or if there is the possibility of direct damage or human injury.
• Electronic components that will be used in safety-critical or high-reliability applications, should be pre-evaluated by the customer.
• The component is designed and manufactured to be used within the datasheet specified values. If the usage and operation conditions
specified in the datasheet are not met, the wire insulation may be damaged or dissolved.
• Do not drop or impact the components, the component may be damaged.
• Würth Elektronik products are qualified according to international standards, which are listed in each product reliability report. Würth
Elektronik does not warrant any customer qualified product characteristics beyond Würth Elektroniks’ specifications, for its validity and
sustainability over time.
• The responsibility for the applicability of the customer specific products and use in a particular customer design is always within the
authority of the customer. All technical specifications for standard products also apply to customer specific products.
Potting:
• If the product is potted in the customer application, the potting material might shrink or expand during and after hardening. Shrinking
could lead to an incomplete seal, allowing contaminants into the core. Expansion could damage the component. We recommend a
manual inspection after potting to avoid these effects.
Storage Conditions:
• A storage of Würth Elektronik products for longer than 12 months is not recommended. Within other effects, the terminals may suffer
degradation, resulting in bad solderability. Therefore, all products shall be used within the period of 12 months based on the day of
shipment.
• Do not expose the components to direct sunlight.
• The storage conditions in the original packaging are defined according to DIN EN 61760-2.
• The storage conditions stated in the original packaging apply to the storage time and not to the transportation time of the components.
Handling:
• Violation of the technical product specifications such as exceeding the nominal rated current will void the warranty.
• Applying currents with audio-frequency signals may result in audible noise due to the magnetostrictive material properties.
These cautions and warnings comply with the state of the scientific and technical knowledge and are believed to be accurate and reliable.
However, no responsibility is assumed for inaccuracies or incompleteness.
Product specific:
Soldering:
• The solder profile must comply with the technical product specifications. All other profiles will void the warranty.
• All other soldering methods are at the customers’ own risk.
• Strong forces which may affect the coplanarity of the components’ electrical connection with the PCB (i.e. pins), can damage the part,
resulting in avoid of the warranty.
Cleaning and Washing:
• Washing agents used during the production to clean the customer application might damage or change the characteristics of the wire
insulation, marking or plating. Washing agents may have a negative effect on the long-term functionality of the product.
• Using a brush during the cleaning process may break the wire due to its small diameter. Therefore, we do not recommend using a brush
during the PCB cleaning process.
CHECKED
REVISION
DATE (YYYY-MM-DD)
GENERAL TOLERANCE
PROJECTION
METHOD
SiBo
DESCRIPTION
004.002
2020-05-12
DIN ISO 2768-1m
WE-LQ SMT Power Inductor
Würth Elektronik eiSos GmbH & Co. KG
EMC & Inductive Solutions
Max-Eyth-Str. 1
74638 Waldenburg
Germany
Tel. +49 (0) 79 42 945 - 0
www.we-online.com
eiSos@we-online.com
ORDER CODE
7440450018
SIZE/TYPE
BUSINESS UNIT
STATUS
PAGE
1812
eiSos
Valid
5/6
This electronic component has been designed and developed for usage in general electronic equipment only. This product is not authorized for use in equipment where a higher safety standard and reliability standard is especially required or where a failure of the product is reasonably expected to cause severe personal injury or death, unless the parties have executed an agreement specifically governing such use. Moreover Würth Elektronik eiSos GmbH
& Co KG products are neither designed nor intended for use in areas such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network etc.. Würth Elektronik eiSos GmbH & Co KG must be informed about the intent of such usage before the design-in stage. In addition, sufficient reliability evaluation checks for safety
must be performed on every electronic component which is used in electrical circuits that require high safety and reliability functions or performance.
射频识别(Radio Frequency Identification，RFID)技术是一种利用无线射频通信实现的非接触式自动识别技术，与目前广泛采用的条形码技术相比，RFID具有容量大、识别距离远、穿透能力强、抗污性强等特点。RFID技术已经发展得比较成熟并获得了大规模商用，但超高频RFID技术相对滞后。本文分析了射频芯片nRF9E5的功能特性，并将其用于RFID系统中，设计了一套有源超高频(...[详细]
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