It is recommended that the temperature of the component does not exceed +125 °C under worst
case conditions
6 ±0,3
Ambient Temperature (refering 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:
Start of Winding
Marking
•
681 (Inductance Code)
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
SIZE
REVISION
STATUS
CREATED
CHECKED
GENERAL TOLERANCE
PROJECTION
METHOD
KaS
DESCRIPTION
ChriB
DIN ISO 2768-1m
WE-LQS SMT Power Inductor
ORDER CODE
74404064681
DATE (YYYY-MM-DD)
BUSINESS UNIT
PAGE
6045
001.001
Valid
2018-09-24
eiSos
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:
720.0
660.0
600.0
Typical Impedance Characteristics:
100000
10000
540.0
480.0
Impedance [Ω]
Inductance [µH]
420.0
360.0
300.0
240.0
180.0
120.0
60.0
1000
100
10
1
0.0
0.0
0.1
0.2
0.3
0.4
0.5
Current [A]
0.6
0.7
0.8
0.1
1
Frequency [MHz]
Z
10
100
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
CREATED
CHECKED
GENERAL TOLERANCE
PROJECTION
METHOD
KaS
DESCRIPTION
ChriB
DIN ISO 2768-1m
WE-LQS SMT Power Inductor
ORDER CODE
74404064681
SIZE
REVISION
STATUS
DATE (YYYY-MM-DD)
BUSINESS UNIT
PAGE
6045
001.001
Valid
2018-09-24
eiSos
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
K0
T
E1
A
D0
P2
W3
W1
close to center
B
D
F
C
B0
E2
W
Top Cover
Tape
W2
A
End
P1
A0
Feeding direction
T2
Start
T1
Carrier Tape
Cover Tape
detail B
B
Cover Tape
Chip Cavity
Sprocket Hole
No Component
min. 160mm
Components
No Component
min.100mm
Cover Tape
min. 400mm
Embossment
packaging is reffered to the international standard IEC 60286-3:2013
tolerance
value
A0
typ.
6,40
B0
typ.
6,40
W
+0,3/ -0,1
16,00
T
ref.
0,40
T1
max.
0,10
T2
typ.
5,20
K0
typ.
4,70
P0
±0,1
4,00
P1
±0,1
8,00
P2
±0,1
2,00
D0
+0,1/ -0,0
1,50
E1
±0,1
1,75
E2
min.
14,25
F
±0,1
7,50
Tape type 2a
Polystyrene
Packaging Unit
pcs.
1500
tolerance
Tape width
16 mm
A
± 2,0
330.00
B
min.
1.50
C
min.
12.80
D
min.
20.20
N
N
min.
60.00
W1
+2
16.40
A
W2
max.
22.40
W3
min.
15.90
W3
max.
19.40
Würth Elektronik eiSos GmbH & Co. KG
EMC & Inductive Solutions
CREATED
CHECKED
GENERAL TOLERANCE
PROJECTION
METHOD
KaS
DESCRIPTION
ChriB
DIN ISO 2768-1m
165° - 180°
Max-Eyth-Str. 1
74638 Waldenburg
Germany
Tel. +49 (0) 79 42 945 - 0
www.we-online.com
eiSos@we-online.com
WE-LQS SMT Power Inductor
ORDER CODE
74404064681
SIZE
REVISION
STATUS
DATE (YYYY-MM-DD)
BUSINESS UNIT
PAGE
Pull-of force
Tape width
16 mm
0,1 N - 1,3 N
6045
001.001
Valid
2018-09-24
eiSos
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
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
CREATED
CHECKED
GENERAL TOLERANCE
PROJECTION
METHOD
KaS
DESCRIPTION
ChriB
DIN ISO 2768-1m
WE-LQS SMT Power Inductor
ORDER CODE
74404064681
SIZE
REVISION
STATUS
DATE (YYYY-MM-DD)
BUSINESS UNIT
PAGE
6045
001.001
Valid
2018-09-24
eiSos
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-LQS of Würth
Elektronik eiSos GmbH & Co. KG:
General:
• This electronic component is designed and developed with the intention for use in general electronic equipment.
• Würth Elektronik must be asked for a written approval (following the certain PPAP level procedure) before incorporating the components
into any equipment in the field 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 possibility of direct damage or injury to human body.
• In addition, even electronic components in general electronic equipment require a sufficient reliability evaluation-check for the safety,
when used in electrical circuits that require high safety, reliability functions or performance, prior to usage.
• The electronic component is designed and manufactured to be used within the datasheets’ specified values. The usage and operation of
the product within ambient conditions, which probably dissolve or harm the wire isolation, has to be avoided.
• The responsibility for the function of the application of the customer specific products and use in a particular customer design is always
the full and autonomous responsibility of the customer. All technical specification for standard products also apply to customer specific
products.
• Direct mechanical impact to the product shall be prevented as the ferrite material of the core could flake or in the worst case it could
break.
• Würth Elektronik products are qualified according to international standards, which are listed in each product reliability report. Würth
Elektronik does not guarantee any customer qualified product characteristic, beyond Würth Elektronik specifications, for its validity and
sustainability over time.
• Limiting factors for the storage stability of electronic components are material characteristics and a solderability decrease of the
terminations. Therefore all products shall be used within the period of 12 month based on the day of shipment.
• Do not expose the components into direct sunlight.
• The storage condition in the original packaging refered to DIN EN 61760-2.
Potting:
• If the product is potted in the costumer applications, the potting material might shrink during and after hardening. The product is
exposed to the pressure of the potting material with the effect that the core, wire and termination is possibly damaged by this pressure
and so the electrical as well as the mechanical characteristics are endangered to be affected. After the potting material is cured, the
core, wire and termination of the product require the inspection for any reduced electrical or mechanical functions or potential
destructions.
Handling:
• Violation of the technical product specifications such as exceeding the nominal rated current will void the warranty.
• The general and product specific cautions 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, other profiles will void the warranty.
• All other soldering methods are at the customer’s own risk.
Cleaning and Washing:
• Washing agents used during the production to clean the customer application might damage or change the characteristics of the wire
insulation, the marking or the plating. The washing agent could have a negative effect on the long term functionality of the product.
Storage Conditions:
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
CREATED
CHECKED
GENERAL TOLERANCE
PROJECTION
METHOD
KaS
DESCRIPTION
ChriB
DIN ISO 2768-1m
WE-LQS SMT Power Inductor
ORDER CODE
74404064681
SIZE
REVISION
STATUS
DATE (YYYY-MM-DD)
BUSINESS UNIT
PAGE
6045
001.001
Valid
2018-09-24
eiSos
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.
主题：自备终端(BYOD)发展趋势;用员工自己的移动设备来控制对工作设施及设备的使用，会对信息安全产生怎样的影响;在不使公司有安全风险或不损害员工隐私的前提下，有哪些方式能安全地实现这样的设施及设备使用。 自备终端(Bring Your Own Device，简称BYOD)，即企业允许员工离职时保留自己的手机，这种做法正日益流行。如今智能手机功能也越来越多，我们不仅能用自己的手机访问电脑、网...[详细]
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