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www.we-online.com
04/13
Würth Elektronik eiSos
Characteristics
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Magnetically shielded version which results in a low
leakage field
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High storage capacity
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Low self-losses
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Highest possible current loading for SMD Inductors
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Operating temperature: –40 °C to +125 °C
Applications
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Switching regulators with low operating voltages
(computer, laptop, mobile phones, pagers)
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Integrated DC/DC-converter
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Perfectly suitable for switching regulators with
extremely high efficiency (> 86%)
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Graphic cards
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Plastic base: Because of
the one piece construction
these are more suitable
for high vibration or shock
applications
WE-PD
SMD Shielded Power Inductor
Note
The ambient temperature when operating the WE-PD series of storage chokes at full current rating load should generally range from –40 °C to +85 °C. The self-heating of the component must be
taken into account at higher ambient temperatures in order that the permissible solder joint temperature is not exceeded or the wire insulation damaged. The wire used can withstand a temperature
of up to +150 °C. The ferrite core itself may be used over a far greater temperature range (approx. –50 °C to +250 °C [Curie temperature]). However, in this case, the tolerance limits of the inductor
may be exceeded due to the temperature dependence of permeability.
Current derating at ambient temperature of >85 ºC
Inductance vs. DC bias current
Würth Elektronik included now in their product range as well the WE-PD
with white coating for a higher light efficiency used in LED applications. Hence
a pleasant optical design, where beside the circuit board as well the mounted components
could now be manufactured in white color, is possible. The SMD Power Inductor is available with white
coating in the sizes 7332, 7345, 1260 and 1280 (all with plastic base). More information on page 275.
Application example Frensch GmbH
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NEW:
White coating for
LED applications
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