Polymer mlcc replacement option external

1. Are the Ta Polymer SMD Automotive Grade Capacitors an
alternative in actual MLCC supply chain issue?
Cristina Mota Caetano
May 2018
KEMET/TOKIN Proprietary Information
EXTERNAL INFORMATION

2. 2© KEMET Electronics. All Rights Reserved.
EXTENDED LEAD TIMES
> 1206 FOOTPRINT CAPACITY PHASE OUT
IMMEDIATE ACTION
REQUIRED!

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WHAT ARE THE EXISTING ALTERNATIVES?
Application Voltage
Ripple Current
DCL requirements
over life
Footprint/Heigth
Requirements
Transient
Requirements
Mission Profile
Application
Temperature
Solution Cost
DESIGNERS
DECISION
FACTORS

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Mapping Capacitors Alternatives

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Important Consideration Factors

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Mechanical & Dimensional
EIAsize
code
Metric Size
Code
Metric Size
Code Letter
Comment / max
H
0805 2012 2012 P 1,0mm max H
1206 3216 3216 A 1,8mm max H
1206 3216 3216 S 1,2mm max H
1206 3216 3216 I 1,0mm max H
1210 3225
3528 B 2,1mm max H
1808 4520
1812 4532
1825 4564
6032 C 2,8mm max H
2220 5650
2225 5664
7343 X 4,3mm max H
7343 Y 4,0mm max H
7343 D 3,1mm max H
7343 V 2,0mm max H
MLCC's - Surface
Mount Ta Surface Mount
Footprint 0805 and 1206 have
direct dimensional equivalent
Footprint 1210 has the B3528 as the closest
footprint, adjustements required
Banks of 1210 or larger MLCC footprint can be
replaced by 7343 but board redesigns is required

7. 7© KEMET Electronics. All Rights Reserved.
Replacement
MLCC Piezo Noise
High Capacitance
Low ESR
(High Cap Retention = Reduced Pc Count)
Improved Voltage Derating
MnO2 = 50% Derating
Poly = 10-20% Derating
5V
Input
MnO2 Poly
Temperature &
Humidity Stability
AEC-Q200 125ºC / 150ºC
85ºC/85%RH/Ur
up to 1000h
Polymer Advantages for Automotive
Safe Failure Mode
MnO2toPolymer
AlternativeAdvantages
Transient Capabilities – ISO Pulse
7637-2 and Load Dump E05

8. 8© KEMET Electronics. All Rights Reserved.
Schematics and Requirements
DC/DC
converter
<1V
3.3V
5V12V DSP
Microprocessor
I/O
USB
Is the battery line suppresed with a diode?
What is Voltage Level
Which & how many MLCC parts?
Special OEM’s Requirement
Mission Profile Requirements
Any limiting current/fused in use?
Which & how many MLCC parts?
Special OEM’s Requirement
Mission Profile Requirements
Is H max a limitation?
INPUT OUTPUT

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OUTPUT
ADAS
10 MLCCs - X7R
Case size 1210
47uF6,3V
ESR Requirements, maximum height and mission profile requirements need attention!
2 Polymer7343-20 220uF2,5V--> 418uF
10 MLCC 1210 (3225)47uF6,3V --> 408uF
85ºC / application voltage 1,1V
85ºC, 1,1V, 300kHz
2 Polymer = 10 MLCC
T591V227M2R5ATE009

10. 10© KEMET Electronics. All Rights Reserved.
OUTPUT
ADAS
MLCCs - X7R
Case size
1206/0805
Miniturization
Miniturization Samples Available – 1206 / 0805 FootPrint
1 Polymer1206 = 5 MLCC 1206
1 Polymer0805 = 2 MLCC 1206
85ºC / 5V
T520 used reference to T597S 3216-12
T529 used referentto T597P 2012-10
T597 Series Under development - Ultra Small Auto Grade

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1 Polymer7343 = 4 MLCC 1210
85ºC / 13,5V
INPUT
CHASSIS & SAFETY
3 MLCCs - X7R
Case size 1210
10uF 50V
85ºC, 13,5V, 300kHz
1 Polymer = 3 MLCC
T598D226M035ATE065
DCL Requirements
and Transient
Protection Pulse 5a
need attention!
a b a b Ri=0,5Ohm Ri=4Ohm Ri=0,5Ohm Ri=4Ohm Ri=0,5Ohm Ri=4Ohm
Severity Level 3
Severity Level 4
All Pass Limiting Failures
Load Dump E05ISO7637-2
VW80000 (E05)
Pulse 5a
unsupressed
Pulse 5b
suppressed
(13,5+40V)
Pulse 2 Pulse 3
Pulse 1 Pulse 4

12. 12© KEMET Electronics. All Rights Reserved.
INPUT
CHASSIS & SAFETY
15 MLCCs - X7R
Case size 1210
10uF 50V
New
150ºC
Capability

13. With actual shortage of MLCC components in the market Ta Polymer product offers new potential solutions
to automotive designers where space board saving, piezo noise free solution and miniturization are
required.
The examples described in this document focus in boundaries where polymer is viable alternative and in
the main parameters that must be taken in consideration.
If in few cases a direct dimensional replacement can be used, the fast majority of solutions requires re-
design activity.
In the commercial side the total cost of the solution is the main driver and not the cost per piece.
Please contact KEMET sales representative to support you in your actual challenge!

14. Mission Critical
Electronics
High-Performance
Power Management
Where Failure is
Not an Option
Breakthrough Technology Unparalleled Borderless Service Smart People
Innovative Products that
Solve Customer Challenges
Cristina Mota Caetano
Technical Product Marketing Director Tantalum
Cell (PORTUGAL): +351 96 330 84 59
www.kemet.com | CristinaCaetano@kemet.com
KEMET Electronics Portugal, SA
Rua Werner von Siemens, nº1
7005-639 Évora, PORTUGAL