SMPS Stacked MLC Capacitors
(SM Style) Technical Information on SMPS Capacitors
AVX is the original inventor of large capacitance value, stacked MLCC capacitors con-
structed with DIP leads. The SM-style, Switch Mode Power Supply (SMPS) capacitors
were introduced by AVX in 1980s. These capacitors are the closest to the ideal elec-
trical energy storage devices due to high CV product and extremely low ESR and ESL.
In addition to traditionally offered COG (Class I) and X7R (Class II) type dielectrics, AVX
introduces another class I, temperature compensated N1500 dielectric characterized
with very low dissipation factor. Thanks to considerably higher relative dielectric
constant of N1500 dielectric, the CV product is more than doubled in comparison to
ultra-stable COG dielectric, resulting in a significant reduction in the size of capacitor
and a significant improvement of volumetric efficiency.
The typical applications for different type dielectrics are:
COG: High frequency resonant capacitors, avionic AC line filters (400Hz to
800Hz), snubbers, timing circuits, high current repetitive discharge
N1500: Avionic AC line filters (400Hz to 800Hz), snubbers, high current repetitive
discharge, capacitive temperature compensation
X7R:
General filtering, input and output filters in DC/DC converters, bulk filters,
DC link capacitors, motor drive filters, high current non-repetitive discharge
Not RoHS Compliant
GENERAL SPECIFICATIONS FOR ALL DIELECTRIC TYPES
Operating Temperature Range
-55° to +125°C
Voltage Ratings
50VDC through 500VDC (+125ºC)
Dielectric Withstanding Voltage
250% rated voltage for 5 seconds with 30 to 50mA charging current
(500 Volt units @ 750VDC)
Insulation Resistance (25ºC, rated DC voltage)
100KMΩ min. or 1000MΩ-μF min. whichever is less
Insulation Resistance (125ºC, rated DC voltage)
10KMΩ min. or 100MΩ-μF min. whichever is less
Thermal Shock Capabilities
5 cycles (-55°C to +125°C)
Life Test Capabilities (1000 hours)
200% rated voltage at +125ºC (500 Volt units @ 600VDC)
GENERAL SPECIFICATIONS FOR ALL DIELECTRIC TYPES
C0G Dielectric
Capacitance Range
0.01μF to 15μF
(+25ºC, 1.0 ± 0.2Vrms at 1kHz)
Capacitance Tolerances
±5%, ±10%, ±20%
Temperature Characteristic
0 ± 30 ppm/°C
Dissipation Factor
0.15% max.
(+25ºC, 1.0 ± 0.2Vrms at 1kHz)
N1500
Capacitance Range
0.018μF to 33μF
(+25ºC, 1.0 ± 0.2Vrms at 1kHz)
Capacitance Tolerances
±5%, ±10%, ±20%
Temperature Characteristic
-1500 ± 250 ppm/°C
Dissipation Factor
0.15% max.
(+25ºC, 1.0 ± 0.2Vrms at 1kHz)
X7R Dielectric
Capacitance Range
0.1μF to 390μF
(+25ºC, 1.0 ± 0.2Vrms at 1kHz)
Capacitance Tolerances
±10%, ±20%, +80%, -20%
Temperature Characteristic
±15%
Dissipation Factor
2.5% max.
(+25ºC, 1.0 ± 0.2Vrms at 1kHz)
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SMPS Stacked MLC Capacitors
(SM Style) Technical Information on SMPS Capacitors
HOW TO ORDER
SM0
1
7
C
AVX Styles: SM-1, SM-2, SM-3, SM-4, SM-5, SM-6
106
M
A
N
650
AVX Style
Size
Voltage Temperature
Capacitance
SM0 = Uncoated
See
50V = 5
Coefficient
Code
SM5 = Epoxy Coated Dimensions 100V = 1
C0G = A
(2 significant digits
chart
200V = 2 N1500 = 4
+ number of zeros)
500V = 7
X7R = C
1,000 pF = 102
22,000 pF = 223
220,000 pF = 224
1μF = 105
10 μF = 106
100 μF = 107
Capacitance
Test Level
Termination
Height
Tolerance
A = Standard
N = Straight Lead
Max Dimension
C0G/N1500: B = Hi-Rel*
J = Leads formed in
“A”
5 = Standard/MIL** L = Leads formed out 120 = 0.120"
J = ±5%
6 = Hi-Rel/MIL***
K = ±10%
P = P Style Leads
240 = 0.240"
M = ±20%
Z = Z Style Leads
360 = 0.360"
X7R:
480 = 0.480"
K = ±10%
650 = 0.650"
M = ±20%
Z = +80%, -20%
See tables for
capacitance available
in specific height and
dielectric
Note: Capacitors with X7R dielectric are not intended for applications across AC
supply mains or AC line filtering with polarity reversal. Contact plant for rec-
ommendations.
Hi-Rel screening option. Screening consists of 100% Group A
*
(B Level), Subgroup 1 per MIL-PRF-49470.
**
Form, fit & function equivalent to MIL-PRF-49470 part.
Applies to 50V rated parts only. No screening.
*** Form, fit & function equivalent to MIL-PRF-49470 part.
Applies to 50V rated parts only. Hi-Rel screening the same as option B.
Typical ESR Performance (mΩ)
ESR @ 10KHz
ESR @ 50KHz
ESR @ 100KHz
ESR @ 500KHz
ESR @ 1MHz
ESR @ 5MHz
ESR @ 10MHz
Aluminum
Electrolytic
100μF/50V
300
285
280
265
265
335
560
Low ESR
Solid Tantalum
100μF/10V
72
67
62
56
56
72
91
Solid Aluminum
Electrolytic
100μF/16V
29
22
20
18
17
17
22
MLCC
SMPS
100μF/50V
3
2
2.5
4
7
12.5
20
MLCC
SMPS
4.7μF/50V
66
23
15
8
7.5
8
14
Performance of SMPS capacitors can be simulated by downloading SpiCalci software program -
http://www.avx.com/resources/design-tools/
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Embedded System
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