characterized with very high capacitance in a small volume.
By vertical stacking of the ceramic elements, the footprint
required for mounting the capacitors is greatly reduced.
TurboCaps
TM
are ideally suited as filters in the input and
output stages of switch mode power supplies (SMPS). With
their ultra-low ESR, these capacitors are designed to handle
high ripple current at high frequencies and high power levels.
The DIP leads in either thru-hole or surface mount
configurations offer superior stress relief to the ceramic
elements. The leads effectively decouple the parts from the
board and minimize thermally or mechanically induced
stresses encountered during assembly, temperature cycling
or other environmental conditions.
TYPICAL APPLICATION OF TURBOCAP
TM
SMPS CAPACITORS FOR INPUT
AND OUTPUT FILTERS IN DC/DC CONVERTERS
SNUBBER
Vin
OUTPUT
FILTER
Vout
INPUT
FILTER
VCC
G
FB
PWM
CONTROLLER
GND
Performance of SMPS capacitors can be simulated by downloading SpiCalci software program -
http://www.avx.com/SpiApps/default.asp#spicalci
Custom values, ratings and configurations are also available.
MAY 2015
■
49
TurboCap
TM
High-CV SMPS Capacitors
ELECTRICAL SPECIFICATIONS
Temperature Coefficient
Temperature Coefficient
±15%, -55° to +125°C
Dielectric Withstanding Voltage 25°C
(Flash Test)
250% rated voltage for 5 seconds with 50 mA max charging current.
Life Test
(1000 hrs)
X7R: 150% rated voltage at +125°C.
Moisture Resistance
(MIL-STD-202 Method 106)
Ten cycles with no voltage applied.
Thermal Shock
(MIL-STD-202 Method 107, Condition A)
Immersion Cycling
(MIL-STD-202 Method 104, Condition B)
Resistance To Solder Heat
(MIL-STD-202, Method 210,
Condition B, for 20 seconds)
Capacitance Test
(MIL-STD-202 Method 305)
25°C, 1.0±0.2 Vrms (open circuit voltage) at 1KHz
Dissipation Factor 25°C
2.5% Max @ 25°C, 1.0±0.2 Vrms (open circuit voltage) at 1KHz
Insulation Resistance 25°C
(MIL-STD-202 Method 302)
500 MΩ-μF, whichever is less.
Insulation Resistance 125°C
(MIL-STD-202 Method 302)
50 MΩ-μF, whichever is less.
Typical ESR Performance (Ω)
ESR @ 10KHz
ESR @ 50KHz
ESR @ 100KHz
27μF
0.007
0.003
0.002
47μF
0.004
0.002
0.0015
100μF
0.003
0.0015
0.001
Not RoHS Compliant
HOW TO ORDER
ST12
AVX
Style
ST12
ST20
AVX Styles: ST12 and ST20
C
186
Capacitance Code
(2 significant digits
+ no. of zeros)
1 μF = 105
10 μF = 106
100 μF = 107
5
Voltage
25V = 3
50V = 5
100V = 1
M
Capacitance
Tolerance
M = ±20%
A
Test Level
A = Standard
N
Termination
N = Straight Lead
J = Leads formed in
L = Leads formed out
03
Number
of Leads
Per Side
03 = 3
05 = 5
10 = 10
Temperature
Coefficient
X7R = C
CAPACITANCE (μF)
ST12
Cap (μF)
.82
1.3
2.7
8.2
12
14
18
22
27
47
50
68
100
220
50V
100V
Voltage
25V
ST20
50V
100V
...03
...05
...03
...03
...10
...05
...10
...03
...05
...10
...10
...03
...05
...05
...10
50
■
MAY 2015
TurboCap
TM
High-CV SMPS Capacitors
E
D
B
A
1.397 (0.055)
±0.254
(0.010)
6.35 (0.25)
MIN.
0.508 (0.020) TYP.
3, 5 or 10 leads per side
2.54 (0.100) TYP.
2.54 (0.100) MAX.
0.635 (0.025) MIN.
C
0.254 (0.010) TYP.
“N” STYLE LEADS
E
D
0.254 (0.010) RAD. TYP.
B
A
1.397 (0.055)
±0.254
(0.010)
1.778 (0.070)
± 0.254 (0.010)
B
0.508 (0.020) TYP.
3, 5 or 10 leads per side
2.54 (0.100) TYP.
2.54 (0.100) MAX.
0.635 (0.025) MIN.
C
1.397 (0.055)
± 0.127 (0.005)
“J” STYLE LEADS
E
D
B
A
1.397 (0.055)
±0.254
(0.010)
1.778 (0.070)
± 0.254 (0.010)
B
0.254 (0.010) RAD. TYP.
0.508 (0.020) TYP.
3, 5 or 10 leads per side
2.54 (0.100) TYP.
2.54 (0.100) MAX.
0.635 (0.025) MIN.
C
1.397 (0.055)
± 0.127 (0.005)
“L” STYLE LEADS
DIMENSIONS
Style
ST125C***M*N03
ST125C***M*N05
ST125C***M*N10
ST205C***M*N03
ST205C***M*N05
ST205C***M*N10
A (max.)
3.56
3.56
3.56
5.59
5.59
5.59
(0.140)
(0.140)
(0.140)
(0.220)
(0.220)
(0.220)
B (max.)*
5.21
5.21
5.21
7.24
7.24
7.24
(0.205)
(0.205)
(0.205)
(0.285)
(0.285)
(0.285)
C
± 0.635 (± 0.025)
5.08 (0.200)
5.08 (0.200)
5.08 (0.200)
6.35 (0.250)
6.35 (0.250)
6.35 (0.250)
D (max.)
10.8 (0.425)
15.9 (0.625)
27.9 (1.100)
9.5(0.375)
14.6 (0.575)
27.3 (1.075)
E (max.)
6.35
6.35
6.35
7.62
7.62
7.62
(0.250)
(0.250)
(0.250)
(0.300)
(0.300)
(0.300)
millimeters (inches)
Lead
Style
N
N
N
N
N
N
No. of Leads
Per Side
03
05
10
03
05
10
*The “B” dimension is defined for the “N” Style leads. The “L” and “J” Style Leads are 0.381 (0.015) longer. The ST12 will be 5.89 (0.220), the ST20 will be 7.62 (0.300).
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