Multilayer ceramic capacitors

18

12/05

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Please read Cautions and warnings and

Important notes at the end of this document.

Further information

Please see General Technical Information at www.epcos.com/ceramic_capacitors or the data book

“Multilayer Ceramic Capacitors” for further information on:

■

Soldering directions

■

Taping and packing

■

Surface mounting instructions

■

Effects of mechanical stress

Cautions and warnings

■

Derating: A “state of the art” application design is essential to achieve failures rates at ppb level.

Do not use designs based on 100% of specified rated values.

■

AC applications may damage MLSC on a much lower level than DC voltage due to power dissi-

pation losses.

■

Mechanical stress - Please note EPCOS “General Technical Information”, “Surface mounting in-

structions” and information about the effect of mechanical stress.

■

ESD - EPCOS recommends the use of varistors.

■

Further processing - care must be taken using moulding processes.

■

Combined stresses - the total stress (e.g. DC voltage, AC ripple, pulses and temperature) has to

be taken into account to estimate reliability of MLSC.

Typical characteristics

temperature T

Capacitance change

ΔC/C

time t

KKE0190-M

0

T

ins

˚C

8

10

Ω

M

R

20

40

60

80

100

140

KKE0191-V

t

1

10

2

10

3

10

h

C

Δ

1

C

0

%

10

5

_

10

_

15

_

20

_

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