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if ( 47µF == 47µF)
{ true; }
else
{false;}
It's in what’s printed(on)?
if ( 47µF == 47µF)
{
true;
}
else
{
False;
}
one slide statement
capacitance product group
< 4.7µF MLCC
application specific
>220uF Polymer respective
Tantalum
search.kemet.com
EIA-198-D
• Testsetup and conditions for : 

• Ceramic dielectric capacitors classes I, II, III

• Polymer and Alu measured the same way
C_min C_max Test
Frequency
V_rms V_DC
0,1pF 1nF 1kHz 1V 0V
1nF 10µF 1kHz 1V 0V
10µF 1800µF 120Hz 0,5V 0V
MLCC construction
VCC
• VCC = voltage change capacitance
• Proportional with electric field in the dielectric
• thinner dielectric same voltage increase E-field
Net capacitance 47µF/6.3V

compare case sizes 0805/ 1206/ 1210
0V 5V dC %
0805 42,3µF 11,3µF 26 %
1206 42,8µF 22,9µF 52 %
1210 48,3µF 29,4µF 69 %
dielectric physics
• VCC = voltage change capacitance
• Force applied on charged particles caused by an
electrical field
• thinner dielectric same voltage increase E-field

( Downsizing!)
Design improvements
• Print Quantity Reduced ~30% prints
• Chip Thickness Reduced ~ 0.42mm
1210 0805
Dieletric ~1,75µm ~1,40µm
Example 0805/10µF 6,3V
Comparison between manufacturer A,B,C & D
allvaluesareaverages
Property UNIT A B C D
Cap µF 11,1 10,8 9,3 9,1
DF % 7,3 8,0 4,6 4,6
UVBD V 65 96 144 114
IR @25°C MΩ 148 105 174 216
IR@125°C MΩ 112 13 46 94
Dielectric Thickness µm 1,38 1,55 1,74 1,78
Electrode Thickness µm 1,27 1,67 1,57 1,44
Active Layers [1] 395 323 371 333
Stress V/µm 66 98 146 115
K [1] 2690 3176 2817 3434
Grainsize µm 240 490 350 360
VCC 0805 47µF 6.3V
compare VCC measured versus simulated
precision of the VCC chart
VCC K-SIM measured Cap_delta
1 0,2 % 2 % 1,8 %
5 -5,0 % -1 % 4,0 %
10 -20,0 % -20 % 0,0 %
16 -50,0 % -37 % 13,0 %
20 -60,0 % -52 % 8,0 %
25 -68,0 % -62 % 6,0 %
35 -77,0 % -75 % 2,0 %
50 -84,0 % -83 % 1,0 %
0 %
3,5 %
7 %
10,5 %
14 %
5 10 16 20 25 35 50
LTSpice capacitor simulation
C - Model in LT-SPICE
• VCC is not yet included in this models
Compare MLCC / Polymer @120Hz, RT
• AluPolymer in preparation for K-SIM
MLCC
0805
MLCC
1210
Polymer
B
Cap/µF 11,8 29,1 47
Compare technologies 47µF/6V @5V
AluPoly
1)
TaPoly MLCC
0805
MLCC
1206
MLCC
1210
net Cap/µF 41 49 11,3 22,3 29,4
max Temp/°C 105 125 85 85 125
max Height

/mm
9,7 2,1 1,45 1,8 2,8
Price2)/pcs

@2000pcs

0,3868 0,3984 0,2293 0,2475 0,4925
net c€/µF 0,9434 0,8131 2,0292 1,1099 1,6752
1) AluPoly Vr = 35V 2) price by Digikey for 2kpcs)
It's in what’s printed(on)?
if ( 47µF == 47µF)
{
true = Polymer; AluPoly;
}
else
{
false = MLCC; Downsizing ++ ; netCap - - ;
}
Thank You!
Axel Schmidt
Field application Engineer
Cell +49 172 89 25 284
email: AxelSchmidt@kemet.com
Hermann-Köhl-Str. 2
86899 Landsberg am Lech
Germany
www.kemet.com
VCC explanation
• Nominal capacitance is measured 1kHz/0VDC/1VAC
• Capacitance drop thru locked dipoles
• Ripple current decrease
• E-Field is voltage between electrode plates (distance)
• Downsizing requires thinner dielectric
• Thinner dielectric increase electrical field
• capacitane loss is higher

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What happens when (47uF != 47uF)...

  • 1. if ( 47µF == 47µF) { true; } else {false;}
  • 2. It's in what’s printed(on)? if ( 47µF == 47µF) { true; } else { False; }
  • 3. one slide statement capacitance product group < 4.7µF MLCC application specific >220uF Polymer respective Tantalum
  • 5. EIA-198-D • Testsetup and conditions for : 
 • Ceramic dielectric capacitors classes I, II, III
 • Polymer and Alu measured the same way C_min C_max Test Frequency V_rms V_DC 0,1pF 1nF 1kHz 1V 0V 1nF 10µF 1kHz 1V 0V 10µF 1800µF 120Hz 0,5V 0V
  • 7. VCC • VCC = voltage change capacitance • Proportional with electric field in the dielectric • thinner dielectric same voltage increase E-field
  • 8. Net capacitance 47µF/6.3V
 compare case sizes 0805/ 1206/ 1210 0V 5V dC % 0805 42,3µF 11,3µF 26 % 1206 42,8µF 22,9µF 52 % 1210 48,3µF 29,4µF 69 %
  • 9. dielectric physics • VCC = voltage change capacitance • Force applied on charged particles caused by an electrical field • thinner dielectric same voltage increase E-field
 ( Downsizing!)
  • 10. Design improvements • Print Quantity Reduced ~30% prints • Chip Thickness Reduced ~ 0.42mm 1210 0805 Dieletric ~1,75µm ~1,40µm
  • 11. Example 0805/10µF 6,3V Comparison between manufacturer A,B,C & D allvaluesareaverages Property UNIT A B C D Cap µF 11,1 10,8 9,3 9,1 DF % 7,3 8,0 4,6 4,6 UVBD V 65 96 144 114 IR @25°C MΩ 148 105 174 216 IR@125°C MΩ 112 13 46 94 Dielectric Thickness µm 1,38 1,55 1,74 1,78 Electrode Thickness µm 1,27 1,67 1,57 1,44 Active Layers [1] 395 323 371 333 Stress V/µm 66 98 146 115 K [1] 2690 3176 2817 3434 Grainsize µm 240 490 350 360
  • 13. compare VCC measured versus simulated
  • 14. precision of the VCC chart VCC K-SIM measured Cap_delta 1 0,2 % 2 % 1,8 % 5 -5,0 % -1 % 4,0 % 10 -20,0 % -20 % 0,0 % 16 -50,0 % -37 % 13,0 % 20 -60,0 % -52 % 8,0 % 25 -68,0 % -62 % 6,0 % 35 -77,0 % -75 % 2,0 % 50 -84,0 % -83 % 1,0 % 0 % 3,5 % 7 % 10,5 % 14 % 5 10 16 20 25 35 50
  • 16. C - Model in LT-SPICE • VCC is not yet included in this models
  • 17. Compare MLCC / Polymer @120Hz, RT • AluPolymer in preparation for K-SIM MLCC 0805 MLCC 1210 Polymer B Cap/µF 11,8 29,1 47
  • 18. Compare technologies 47µF/6V @5V AluPoly 1) TaPoly MLCC 0805 MLCC 1206 MLCC 1210 net Cap/µF 41 49 11,3 22,3 29,4 max Temp/°C 105 125 85 85 125 max Height
 /mm 9,7 2,1 1,45 1,8 2,8 Price2)/pcs
 @2000pcs
 0,3868 0,3984 0,2293 0,2475 0,4925 net c€/µF 0,9434 0,8131 2,0292 1,1099 1,6752 1) AluPoly Vr = 35V 2) price by Digikey for 2kpcs)
  • 19. It's in what’s printed(on)? if ( 47µF == 47µF) { true = Polymer; AluPoly; } else { false = MLCC; Downsizing ++ ; netCap - - ; }
  • 20. Thank You! Axel Schmidt Field application Engineer Cell +49 172 89 25 284 email: AxelSchmidt@kemet.com Hermann-Köhl-Str. 2 86899 Landsberg am Lech Germany www.kemet.com
  • 21. VCC explanation • Nominal capacitance is measured 1kHz/0VDC/1VAC • Capacitance drop thru locked dipoles • Ripple current decrease • E-Field is voltage between electrode plates (distance) • Downsizing requires thinner dielectric • Thinner dielectric increase electrical field • capacitane loss is higher