It is recommended that the temperature of the part does not exceed 125°C
under worst case operating conditions.
Ambient temperature: -40°C to +85°C (refering to IR)
Operating temperature: -40°C to +125°C
Storage temperature (on tape & reel): -20°C to +40°C; 75% RH max.
Test conditions of Electrical Properties: 20°C, 33% RH
if not specified differently
DESCRIPTION
WE-LHMI SMD Power Inductor
1.4
1.3
1.2
1.1
1.0
REV
2012-10-25
2012-09-13
2012-06-28
2012-02-29
2011-10-01
DATE
SSt
SSt
SSt
SSt
SSt
BY
BD
BD
SSt
BD
BD
CHECKED
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.- No.
SIZE
A4
74437349220
Size: 7050
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.
F Typical Inductance vs. Current Characteristics:
F Typical Temperature rise vs. Current Characteristics:
DESCRIPTION
WE-LHMI SMD Power Inductor
1.4
1.3
1.2
1.1
1.0
REV
2012-10-25
2012-09-13
2012-06-28
2012-02-29
2011-10-01
DATE
SSt
SSt
SSt
SSt
SSt
BY
BD
BD
SSt
BD
BD
CHECKED
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.- No.
SIZE
A4
74437349220
Size: 7050
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.
G Packaging Specification: [mm]
DESCRIPTION
WE-LHMI SMD Power Inductor
1.4
1.3
1.2
1.1
1.0
REV
2012-10-25
2012-09-13
2012-06-28
2012-02-29
2011-10-01
DATE
SSt
SSt
SSt
SSt
SSt
BY
BD
BD
SSt
BD
BD
CHECKED
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.- No.
SIZE
A4
74437349220
Size: 7050
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.
H Soldering Specifications:
H1: Classification Reflow Profile for SMT components:
H2: Classification Reflow Profiles
Profile Feature
Preheat
- Temperature Min (Tsmin)
- Temperature Max (Tsmax)
- Time (ts) from (Tsmin to Tsmax)
Ramp-up rate (TL to TP)
Liquidous temperature (TL)
Time (tL) maintained above TL
Peak package body temperature (Tp)
Time within 5°C of actual peak temperature (tp)
Ramp-down rate (TP to TL)
Time 25°C to peak temperature
refer to IPC/JEDEC J-STD-020D
Pb-Free Assembly
150°C
200°C
60-180 seconds
3°C/ second max.
217°C
60-150 seconds
See Table H3
20-30 seconds
6°C/ second max.
8 minutes max.
H3: Package Classification Reflow Temperature
Package Thickness
PB-Free Assembly
PB-Free Assembly
PB-Free Assembly
refer to IPC/JEDEC J-STD-020D
< 1.6 mm
1.6 - 2.5 mm
≥ 2.5 mm
Volume mm³
<350
260°C
260°C
250°C
Volume mm³
350 - 2000
260°C
250°C
245°C
Volume mm³
>2000
260°C
245°C
245°C
DESCRIPTION
WE-LHMI SMD Power Inductor
1.4
1.3
1.2
1.1
1.0
REV
2012-10-25
2012-09-13
2012-06-28
2012-02-29
2011-10-01
DATE
SSt
SSt
SSt
SSt
SSt
BY
BD
BD
SSt
BD
BD
CHECKED
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.- No.
SIZE
A4
74437349220
Size: 7050
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.
I Cautions and Warnings:
The following conditions apply to all goods within the product series of WE-LHMI
of Würth Elektronik eiSos GmbH & Co. KG:
General:
All recommendations according to the general technical specifications of the data-sheet have to be complied with.
The disposal and operation of the product within ambient conditions which probably alloy or harm the wire isolation has to be avoided.
If the product is potted in customer applications, the potting material might shrink during and after hardening. Accordingly to this 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 endanger to be affected. After the potting material is cured, the core, wire and
termination of the product have to be checked if any reduced electrical or mechanical functions or destructions have occurred.
The responsibility for the applicability of customer specific products and use in a particular customer design is always within the authority of
the customer. All technical specifications for standard products do also apply for customer specific products.
Cleaning agents that are used to clean application might damage or change the characteristics of the component, body, pins or termination.
Direct mechanical impact to the product shall be prevented as the iron powder material of the core could flake or in the worst case it could
break.
Product specific:
Follow all instructions mentioned in the datasheet, especially:
•The solder profile has to be complied with according to the technical reflow soldering specification, otherwise no warranty will be sustai-
ned.
•All products are supposed to be used before the end of the period of 12 months based on the product date-code, if not a 100% solderabi-
lity can´t be warranted.
•Violation of the technical product specifications such as exceeding the nominal rated current will result in the loss of warranty.
DESCRIPTION
WE-LHMI SMD Power Inductor
1.4
1.3
1.2
1.1
1.0
REV
2012-10-25
2012-09-13
2012-06-28
2012-02-29
2011-10-01
DATE
SSt
SSt
SSt
SSt
SSt
BY
BD
BD
SSt
BD
BD
CHECKED
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.- No.
SIZE
A4
74437349220
Size: 7050
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.
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