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.