It is recommended that the temperature of the component does not exceed +125 °C under worst
case conditions
Ambient Temperature (referring
to I
R
)
Operating Temperature
Storage Conditions (in original
packaging)
Moisture Sensitivity Level (MSL)
Scale - 30:1
-40 up to +110 °C
-40 up to +125 °C
< 40 °C ; < 75 % RH
1
0,55 ± 0,1
Test conditions of Electrical Properties: +20 °C, 33 % RH if not specified differently
CHECKED
REVISION
DATE (YYYY-MM-DD)
GENERAL TOLERANCE
PROJECTION
METHOD
JoMa
DESCRIPTION
002.002
2019-03-07
DIN ISO 2768-1m
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
WE-KI SMT Wire Wound Ceramic
Inductor
SIZE/TYPE
BUSINESS UNIT
ORDER CODE
744765090A
STATUS
PAGE
0402A
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. Frequency Characteristics:
1000
Q-Factor vs. Frequency:
100
90
80
100
70
Inductance [nH]
Q
10
1
60
50
40
30
20
10
0
1
10
100
1000
0
1
10
100
1000
Frequency [MHz]
Frequency [MHz]
CHECKED
REVISION
DATE (YYYY-MM-DD)
GENERAL TOLERANCE
PROJECTION
METHOD
JoMa
DESCRIPTION
002.002
2019-03-07
DIN ISO 2768-1m
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
WE-KI SMT Wire Wound Ceramic
Inductor
SIZE/TYPE
BUSINESS UNIT
ORDER CODE
744765090A
STATUS
PAGE
0402A
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
T2
T
W1
close to center
D
W3
B
F
E2
B0
W
C
C
W2
A0
top cover
tape
P1
K0
T1
Start
Carrier tape
End
Feeding direction
detail B
B
Cover Tape
Chip Cavity
Sprocket Hole
Cover tape
Embossment
No Component
min. 160mm
Components
No Component
min. 100mm
Cover Tape
min. 400mm
P0
P1
P2
D0
±0,1 ±0,1 ±0,05 +0,1/ -0,0
4
2
2
1.5
E1
E2 F
Tape Type 2a
±0,1 min. ±0,05
1.75 6.25 3.5
Paper
VPE / packaging unit
pcs.
3000
tolerance
Tape width
8 mm
tolerance
size
0402A
A0
typ.
0.7
B0
typ.
1.2
C
typ.
1.4
W
+0,3/ -0,1
8
T
T1
T3 K0
±0,1 max. typ. typ.
0.68 0.1 0.78 0.6
A
± 2,0
178
B
min.
1.5
C
min.
12.8
D
min.
20.2
N
N
min.
50
A
W1
+1,5
8.4
W2
max.
14.4
W3
min.
7.9
W3
max.
10.9
CHECKED
REVISION
DATE (YYYY-MM-DD)
GENERAL TOLERANCE
PROJECTION
METHOD
JoMa
002.002
2019-03-07
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-KI SMT Wire Wound Ceramic
Inductor
SIZE/TYPE
BUSINESS UNIT
ORDER CODE
744765090A
STATUS
PAGE
Pull-of force
Tape width
8 mm
0,1 N - 1,0 N
0402A
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
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 temperaure
Ramp-down Rate (T
L
to T
P
)
Time 25°C to peak temperature
refer to IPC/ JEDEC J-STD-020E
Temperature
Preheat Area
T
s min
t
S
Package Classification Reflow Temperature:
Properties
Volume mm³
<350
260 °C
250 °C
Volume mm³
350-2000
260 °C
250 °C
245 °C
Volume mm³
>2000
260 °C
245 °C
245 °C
25
Time 25°C to Peak
PB-Free Assembly | Package Thickness < 1.6 mm
PB-Free Assembly | Package Thickness ≥ 2.5 mm
refer to IPC/ JEDEC J-STD-020E
PB-Free Assembly | Package Thickness 1.6 mm - 2.5 mm
260 °C
Time
CHECKED
REVISION
DATE (YYYY-MM-DD)
GENERAL TOLERANCE
PROJECTION
METHOD
JoMa
DESCRIPTION
002.002
2019-03-07
DIN ISO 2768-1m
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
WE-KI SMT Wire Wound Ceramic
Inductor
SIZE/TYPE
BUSINESS UNIT
ORDER CODE
744765090A
STATUS
PAGE
0402A
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-KI 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 were 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, as the core may flake apart.
• 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 may shrink or expand during and after hardening. Shrinking
could lead to an incomplete seal, allowing contaminants into the core. Expansion could damage the core or wire contacts. 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.
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 Würth Elektronik technical soldering specification. 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
JoMa
DESCRIPTION
002.002
2019-03-07
DIN ISO 2768-1m
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
WE-KI SMT Wire Wound Ceramic
Inductor
SIZE/TYPE
BUSINESS UNIT
ORDER CODE
744765090A
STATUS
PAGE
0402A
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.
语音作为自然的人机接口，可以使车载导航系统实现更安全、更人性化的操作。通过国内外车载导航系统的功能对比可知，支持语音交互是车载导航系统的一个发展趋势。另外，市场信息服务公司J.D Power and Associates的调研数据也表明，56％的消费者更倾向于选择声控的导航系统。因此，开发车载语音导航系统是很有意义的。目前，国内已经具备开发车载语音导航系统的技术基础，特别是文语转换TTS技术...[详细]
目前医疗监护中无法动态掌握患者信息，一旦患者病情恶化，无法在第一时间实施抢救，对数据信息维护效率低。 文中首先阐述了蓝牙技术及其在医疗监护中应用的可行性，然后设计了系统框架，给出了具体功能，BlueTooth Wireless Communication Technology Application in Medical Monitoring包括数据采集和语音报警，最后对蓝牙信号在传输...[详细]
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