SMPS capacitors
Spectrum Advanced Specialty Products offers a line
of SMPS capacitors designed to provide superior
performance in high frequency switching applications.
These capacitors are ideal for high energy density
products found in both military and commercial markets.
•
Mil-PRF-49470 Qualified, DSCC 87106 and custom
product available
•
Leaded parts safeguard against thermal
and mechanical stresses
•
Capacitance values to 0.01 µF to 47 µF
Spectrum’s high-speed Switch Mode Power Supply
capacitors have the following characteristics when
compared to other capacitive elements:
•
Lower Equivalent Series Resistance (ESR)
•
Lower Equivalent Series Inductance (ESL)
•
Lower ripple voltage and less self heating
See graphs on side 2 for reference
B A
0.055
±0.10
Physical Characteristics
“N” Style Leads
D
E
Chip Separation
.010 typ.
Style/Size
SMP-3
SMP-4
SMP-5
(in)
(mm)
(in)
(mm)
(in)
(mm)
A
max
0.650
16.50
0.650
16.50
0.650
16.50
B
E
max
±0.025" ±0.025"
max
0.715
18.16
0.715
18.16
0.715
18.16
0.450
11.42
0.400
10.15
0.250
6.35
1.050
26.65
0.400
10.15
0.250
6.35
0.500
12.69
0.440
11.17
0.300
7.62
Dimensions
C
D
Leads/
Side
10
4
3
0.250 min.
0.020 typ.
0.100 typ.
0.100 max.
0.025 min.
C
0.010 typ.
“J” Style Leads
0.010 rad. (typ.)
0.070
±.010
0.050 min. (typ.)
“L” Style Leads
0.010 rad. (typ.)
0.070
±.010
0.050 min. (typ.)
* Dimensions are in inches
Spectrum Advanced Specialty Products
8061 Avonia Road • Fairview, Pennsylvania 16415
Phone: 814-474-1571 • Fax: 814-474-3110
www.SpecEMC.com
SMPS capacitors
Load Current - Amps
Absolute Maximum Capacitance ESR
Assuming no ESL - Capacitive Induced Ripple
25
20
15
10
5
0
50 mv Noise
Due to ESR
Impedance vs. Frequency
10
Impedance - Ohms
1.0
Typical 30
µF
MLC
.10
0
10
20
30
40
Maximum Output Filter Capacitance ESR
(mOhm)
Absolute Maximum Capacitance ESL
Assuming no ESR - Capacitive Induced Ripple
25
.01
Typical 150
µF
MLC
.001
.001
.01
0.1
1.0
10
Load Current - Amps
20
15
10
5
0
50 mv Noise
Due to ESL
250 KHz
500 KHz
1 MHz
2 MHz
Frequency - MHz
ESR vs. Frequency
1.00
Typical Tantalum
0
5
10
15
20
Maximum Output Filter Capacitance ESL
(nH)
ESR - Ohms
0.10
Typical 30
µF
X7R MLC
0.01
Load Current - Amps
Absolute Maximum Output Capacitance
Assuming no ESL and no ESR
25
20
15
500 KHz
2 MHz
1 MHz
0.001
0.0001
1.0
10
100
1,000
10
5
0
0
5
10
15
20
Maximum Output Filter Capacitance
(µF)
250 KHz
Frequency - KHz
SMPS Part Numbering System
Example
:
SMP3X124KENMB00
The part number shown represents a size 3 SMPS capacitor. The ceramic type will be BX, capacitance value is 120,000 pF, with a tol-
erance of ±10%. The voltage rating is 500 VDC, termination will be “N” style leads and the parts will receive marking/ bulk packaging.
SMP3
Case
Size
SMP3
SMP4
SMP5
X
Ceramic Code
B: X7R
P: BP
Q: BQ
R: BR
X: BX
124
EIA Cap Code
Example:
120,000 pF
K
EIA Cap
Tolerance
J:
±5%
K: ±10%
M: ±20%
E
Voltage
Rating
Z: 25 VDC
A: 50 VDC
B: 100 VDC
C: 200 VDC
E:
500 VDC
N
Termination
J:
L:
Leads in
Leads out
M
Marking
M: Marked
U: Unmarked
B
Packaging
B: Bulk
T:
Tape
& Reel
00
Special
Requirements
00: Standard
XX: Custom
HR: Hi-Rel*
N: Leads
straight
* HR: Hi-Rel designation reflects MIL-PRF-49470, level B, QPL approval
Spectrum Advanced Specialty Products
8061 Avonia Road • Fairview, Pennsylvania 16415
Phone: 814-474-1571 • Fax: 814-474-3110
www.SpecEMC.com
嵌入式系统
