SMPS Switch-Mode Stacked ceramic capacitors feature large capacitance values and exhibit low ESR (equivalent series resistance) and low ESL (equivalent series inductance) making them well suited for high power and high frequency applications where tantalum or aluminum electrolytic capacitors may not be suitable. Johanson offers three series Stacked assemblies. The P-Series feature mechanical and pin-out configurations per DSCC 87106 and 88011 drawings while the E-Series feature mechanical and pin-out configurations more common in European design applications. The T-Series feature 200°C applications.
Features:
E-Series Common European Lead Styles
NPO & X7R Dielectrics, 50 to 500 VDC Ratings
Low ESR / Low ESL, Ideal for SMPS Filtering Applications
Custom Sizes, Voltages, and Values Available
Impedance vs Frequency:
The left-hand portion of the curves represents the capacitive reactance of two typical values. The impedance decreases until series resonance is reached. At this point (the bottom of the V), the only component of the impedance is the ESR. At higher frequencies (the inductive portion) the ESR remains relatively low so that effective filtering is maintained.
ESR vs Frequency:
These curves reflect the very low ESR of two typical values. These ESRs are much lower than Tantalums or Aluminum electrolytics of the same values. The result is the ability to provide filtering (low loss) and to handle high power requirements.
Ripple Current vs Frequency:
Here are two examples of the ability of Switch-Mode capacitors to handle high values of ripple current (high power) at various frequencies. Refer to the "AC Power Computations" applications note or contact Johanson Dielectrics Applications Engineering for more information.
The large ceramic mass of Switch-Mode capacitors increases their susceptibility to damage from thermal shock during soldering. Parts should be pre-heated to within 50°C of the peak soldering temperature and the preheating cycle's thermal gradient should be limited to a maximum of 2°C per second.
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Subfamily
SMPS P-Series - BME
Size Multi-Layer Capacitor (MLCC)
2324
3839
43102
43205
79148
12266
Voltage
Industry Std examples:
6.3V
200V
Special Code
3 numeric values in the voltage field - No "R" in the 3 digits - used for values greater than or equal to 10 Volts
1st two digits are Signiant; third digit denotes number of zeros,
100 = 10 Volts
101 = 100 Volts
402 = 4000 Volts
With "R" in the 3 digits - used for capacitance values less than 10 Volts
R = decimal point.
6R3 = 6.3 Volts
Dielectric Temp Char
Class 1 Temp Compensating
NP0/C0G
Class 2 Hi-Dielectric Constants
BX
X7R
X8R
Miscellaneous
Define in special code
Capacitance
Industry Std examples:
1 pF
15 pF
4,700 pF
+ Alpha Cap Codes
Special Code
3 numeric values in the voltage field - No "R" in the 3 digits - used for values greater than or equal to 10 pF
· 1st two digits are Signiant; third digit denotes number of zeros,
100 = 10 pF
101 = 100 pF
With "R" in the 3 digits - used for capacitance values less than 10pF
R = decimal point.
R75 = 0.75 pF
8R2 = 8.2 pF
Tolerance
NP0 <10pF
±0.05pF
±0.1pF
±0.25pF
±0.5pF
NP0 >10pF
±1%
±2%
±5%
±10%
±20%
X7R
±5%
±10%
±20%
Special Code
Marking
No Mark
EIA Mark
Cap Code & Tol
Special Code
Marking available on 0805 and larger sizes
Termination
Surface Mount
Ni/Sn (RoHS)
Ni/SnPb
Cu/Sn (RoHS)
Cu/SnPb
Polyterm Sn (RoHS)
Polyterm Sn/Pb
Surface Mount
Ni/Au (RoHS)
Pd Ag Strike (RoHS)
Pd/Ag (RoHS)
Pt/Ag (RoHS)
Double dip Pd (RoHS)
Special Code
Special Code
Default Catalog Item
Default for AEC Q200
1st special code
The special code is used to designate special (non-Catalog) performance requirements, testing, or physical dimensions.
EMI filter capacitors employ a unique, patented low inductance design featuring two balanced capacitors that are immune to temperature, voltage and aging performance differences. These components offer superior decoupling and EMI filtering performance, virtually eliminate parasitics, and can replace multiple capacitors and inductors saving board space and reducing assembly costs.
TANCERAM® chip capacitors can replace tantalum capacitors in many applications and offer several key advantages over traditional tantalums. Because Tanceram® capacitors exhibit extremely low ESR, equivalent circuit performance can often be achieved using considerably lower capacitance values. Low DC leakage reduces current drain, extending the battery life of portable products. Tancerams® high DC breakdown voltage ratings offer improved reliability and eliminate large voltage de-rating common when designing with tantalums.
Johanson Dielectrics is dedicated to providing the highest level of customer satisfaction through high quality components, superior customer service and forward looking, advanced products.
