The "evergreen" application requirement for miniaturization has driven the development of small case size Polymer Capacitors to rated voltage levels of 25V now. In case sizes 0805 (4.7µF/25V) and 1206 (="A Case" footprint with max. height of 1.2 mm, 10µF/25V) customers can now benefit from the stable capacitance with DC voltage applied as well as the usage for application voltages up to 22.5V in case sizes usually known from Multi-Layer Ceramic Capacitors (MLCC´s). With the MLCC technology undergoing changes towards even smaller case sizes and facing extended lead times, small case size Polymer Capacitors can represent an interesting alternative for your Capacitance requirement.

1. Polymer Capacitors - 0805 and 1206 footprints
now available with higher rated voltages
Webinar Matthias Harder
June 2018
KEMET/TOKIN Proprietary Information

2. • KEMET Polymer General Information
• New P/N released
• Small Case Size Offering
• Small Case Size as MLCC Replacement?
• Application Example
• Parameters to consider

3. 3© KEMET Electronics. All Rights Reserved.
Miniturization &
Extended Life
Board Space
and
Pick&Place
Reduction
Non catastrophic
Ignition failure mode
due to lower O2 index
Polymer is the successor of Tantalum MnO2 Capacitors
• PEDT as cathode counter electrode material
• Low oxygen index - no ignition failure mode
• Single digit ESR in mili-Ω range - less self heating!
• Cost saving potential
Why Polymer?

4. 4© KEMET Electronics. All Rights Reserved.
Newly released Part Number - T529P475M025AAE300
T529P475M025AAE300
Capacitance: 4.7 µF
Rated Voltage: 25 VDC (85C)
ESR max.: 300 mOhm
Features & Benefits
• No DC Bias effect, i.e. „real“ 4.7 µF available:
• Mechanically Robust
• No Piezo Noise Effect
• Voltage DC: 25 VDC (85C), 20 VDC (105C)
• Small Package: L = 2 mm +/- 0.1mm
W = 1.25 mm +/- 0.1 mm
H = 1 mm max.
0805 Footprint

5. 5© KEMET Electronics. All Rights Reserved.
Overview Small Case Size Offering – T529 / T527 Series
T529 Series - Small Case Substrate Terminal Polymer Electrolytic
Footprint
(Imperial) 6.3 10 25
4.7 2012-10 P 0805 300
10 2012-10 P 0805 200 200
22 2012-10 P 0805 150 150
47 2012-10 P 0805 150 200
150 3216-10 I 1206 200
Capacitance
(µF)
Size Code
EIA / KEMET
Voltage (V)
T527 Series - Facedown Polymer Electrolytic
Footprint
(Imperial) 4 6.3 10 25
10 3216-12 S 1206 300
22 3216-10 I 1206 200
33 3216-10 I 1206 200
47 3216-10 I 1206 200 200
100 3216-10 I 1206 200 70
Capacitance
(µF)
Size Code
EIA / KEMET
Voltage (V)
Under
Development
Just Released

6. 6© KEMET Electronics. All Rights Reserved.
Overview Small Case Size Offering – T520
T520 Series - Low ESR Polymer Electrolytic
Capacitance
(µF)
Footprint
(Imperial) 2 2.5 3 4 6.3 8 10
10 3216-18 A 1206 80
15 3216-18 A 1206 80
22 3216-18 A 1206 90 80
33 3216-18 A 1206 70 70
47 3216-18 A 1206 90 70 150
68 3216-18 A 1206 70 180 150
100 3216-18 A 1206 150 35
220 3216-18 A 1206 25
Voltage (V)
Size Code
EIA / KEMET

7. 7© KEMET Electronics. All Rights Reserved.
Kemet @ Confidential Propriety
T527
T529Standard Construction
A3216-18
Facedown Construction
I 3216-10
Substrate Construction
P 2012-10
Series T520 T527 T529
Vol Efficiency 19% 38% 55%
Footprint 5,12mm2 5,12mm2 2,5mm2
Volume 9,22mm3 5,12mm3 2,5mm3
Volume Ratio 1 0,56 0,27
Package Efficiency Evolution – 47µF/6.3V
T520

8. 8© KEMET Electronics. All Rights Reserved.
Polymer Small Case Size as MLCC Replacement?
Yes, possibly….
Drop-in / 1:1 / pin-to-pin: for 0805 footprint – T529P
for 1206 footprint – T520A / T527I / T527S / T529I
…BUT Polymer Technology advantages are not considered:
- piece count reduction
- board space saving
- Pick&Place benefits
- Lower failure rates (by smaller component count)

9. 9© KEMET Electronics. All Rights Reserved.
3216-12
1206
33uF6,3V
47uF6,3V
22uF10V
2012-10
0805
22uF6,3V
Actual
7343-31
3528-20 One 0805 Polymer = three 1206 MLCC
One 1206 Polymer = six 1206 MLCC
Ultra Small Solutions (UD)
Where Space is a concern…

10. 10© KEMET Electronics. All Rights Reserved.
Replacement
MLCC Piezo Noise
High Capacitance
Low ESR
(High Cap Retention = Reduced Pc Count) Higher Application
Voltage Range
Improved Voltage Derating
MnO2 = 50% Derating
Poly = 10-20% Derating
5V
Input
MnO2 Poly
Low Profile
Temperature &
Humidity Stability
85ºC/85%RH/Ur
up to 1000h
Polymer Advantages
Reduce Piece Count
Miniturization
Low Profile
Humidity Capability
Application 31.5V 45V 56.7V 67.5V
Voltages:
Safe Failure Mode
75V
….

11. 11© KEMET Electronics. All Rights Reserved.
MLCC to Polymer conversion: Parameters to consider (1)
• Total NET CAPACITANCE
– Capacitance of 1 MLCC Capacitor under application conditions (applied voltage, frequency, aging),
see also KEMET K-SIM Tool (http://ksim.kemet.com/)
– Number of capacitors in parallel to achieve TOTAL Net capacity - Target MLCC dielectrics
X5R/X7R (Class II)
• It makes sense to consider Polymers for:
– A NET CAPACITANCE >= 10 µF (for application voltages up to 14.4V)
0.68-10 µF (at application voltages of 45V and higher)
– Application Voltages up to 67.5V (60V for Harsh Conditions)
– Frequencies up to 1MHz (higher switching frequencies contact KEMET)

12. 12© KEMET Electronics. All Rights Reserved.
MLCC to Polymer conversion: Parameters to consider (2)
• Application Voltage
– MLCC capacitors are specified at 0/1V – actual capacitance decreases with applied voltage
– Polymer Capacitors are stable over applied voltage, but a 10/20% derating needs to be considered
• Ripple Current Requirements
– Polymer capacitors can easily handle Ripple Currents up to 2 to 3 Arms (higher ripple requirements
with Single Digit ESR products or stacked construction)
• Geometry Requirements
– Max. PCB Board Space available
– Max. Component Height allowance

13. 13© KEMET Electronics. All Rights Reserved.
WHAT IS THE CRITICAL
DESIGN PARAMETER?
ESR Reverse BiasVoltage
Total
Capacitance
No
KOCAP
Frequency
>680nF?Y N
V>50V? NY
KO-CAP may be an option, check the other critical parameters.
OK?Y N>10mΩ?Y N
f>1MHz?Y N
If you pass all the checks then you are in good shape for KO-CAP
No
KOCAP
No
KOCAP
No
KOCAP
No
KOCAP

14. • http://www.kemet.com/Lists/ProductCatalog/Attachments/684/KEM_T2076_T
52X-530.pdf
• https://ec.kemet.com/
• http://ksim.kemet.com/
• https://ec.kemet.com/mlcc_alternatives
• https://ec.kemet.com/knowledge/ta-polymer-smd-automotive-grade-
capacitors-mlcc-supply-chain-issues
• https://ec.kemet.com/knowledge/polymer-mlcc-replacement-options
Resources

15. 15© KEMET Electronics. All Rights Reserved.
Questions & Answers
Any Questions?

16. 16© KEMET Electronics. All Rights Reserved.
Matthias Harder
Director Business Management Tantalum EMEA
+49-8251-8907951
+49-172-5675138
www.kemet.com | MatthiasHarder@kemet.com
Hermann-Köhl-Str. 2,
D-86899 Landsberg am Lech, Germany