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B37941X Datasheet(PDF) 6 Page - EPCOS

Part No. B37941X
Description  Multilayer ceramic capacitor
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Maker  EPCOS [EPCOS]
Homepage  http://www.epcos.com
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B37941X Datasheet(HTML) 6 Page - EPCOS

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Multilayer ceramic capacitor
B37941X
MLSC series
MLSC 0805, 50 V and 100 V
MLSC design
The MLSC is characterised by a serial capacitor design (see pictures below). The design of the components
reduces drastically the probability of short circuits in case of flex cracks.
Crack formation in a standard MLCC:
Crack formation in a MLSC:
KKE0387-F-E
Termination
Solder
Crack
KKE0383-H-E
Termination
Solder
Crack
Features
Two capacitors are serial connected in one multilayer ceramic capacitor
Reduced probability of shorts after flex cracking
Evaluation criteria: Insulation resistance >10 k
Ω after the following treatment
1. Bending till flex crack
2. Humidity tests (85 °C/85% RH, rated voltage), 14 days
The breakdown voltage of MLSC in case of typical flex cracking is still higher than 5 times the
rated voltage.
Both the un-damaged as well as flex cracked MLSC is capable to fulfil the requirements per ISO
7637 for 12V board systems, including load-dump and jump-start requirements (24V/1h and
36V/1h).
BME technology
U Caution
It is not possible to prevent a short circuits for 100%. That means the use of MLSC does not result in 100%
failure safe mode, but in case of a crack the probability of a short cut can be much reduced.
In case of a not typical (bending) crack formation (e.g. double sided crack or extreme assembling crack) and
other mechanical or thermal damage to the capacitor a low ohmic state of the capacitor will be the result.
KB VS PE
July 2005
Please read Cautions and warnings and
Page 6 of 14
Important notes at the end of this document.


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