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SMPS Stacked MLC Capacitors

SMX Style for High Temperature Applications up to 200ºC

SMX-style, stacked Switch Mode Power Supply Capacitors (SMPS) utilizing

Multilayer Ceramic (MLCC) construction are ideally suited for high temperature

applications up to 200ºC. This product is intended for downhole oil exploration,

including logging while drilling, geophysical probes, as well as space and aerospace

electronics. The high temperature solder utilized in the construction of SMX-style

parts assures reliable operation in harsh environments. The wide product offering

provides designers a solution for high capacitance value and high voltage capaci-

tors rated at 200ºC. The SMX-style capacitors are ideally suited for applications as

DC filters in high power, high frequency motor drives, high pulsed-current circuitry,

as well as low power electronics.

SMX-style, SMPS capacitors are characterized with excellent performance in

comparison to wet tantalum products. The main benefits of SMX-product over wet

tantalum capacitors include:

• Much lower ESR and lower losses

• Excellent capacitance retention with frequency

• Excellent high frequency performance

• Low DC leakage current

• Much higher current handling capabilities

Typical Extended Temperature TCC

Characterization of C0G, SMPS Capacitors

Test conditions: 1 Vrms, 1 kHz, 0 VDC bias

-1.0

-0.8

-0.6

-0.4

-0.2

0.0

0.2

0.4

0.6

0.8

1.0

-75

-50

-25

0

25

50

75

100

125

150

175

200

Temperature (ºC)

Typical Extended Temperature IR Characterization of

C0G, SMPS Capacitors

10

100

1000

10000

120

130

140

150

160

170

180

190

200

Temperature (ºC)

Typical Extended Temperature IR Characterization of

X7R/X9U, SMPS Capacitors

Temperature (ºC)

1

10

100

1000

10000

120

130

140

150

160

170

180

190

200

Typical Extended Temperature TCC

Characterization of X7R/X9U, SMPS Capacitors

Test conditions: 1 Vrms, 1 kHz, 0 VDC bias

Temperature (ºC)

-100

-80

-60

-40

-20

0

20

-75

-50

-25

0

25

50

75

100

125

150

175

200