2. 2Š KEMET Electronics. All Rights Reserved.
Pontecchio, Italy, Film Innovation Center
and SMD Film Manufacturing Facility
General Information
⢠NEW, opened in Aug 2013
⢠R&D: 350 m2
⢠Laboratory 800m2
⢠>50 employees
Capabilities
⢠Material Evaluation
⢠New Product Development
⢠New Process & Equipment
⢠Sampling and Testing
⢠WMT Laboratory Certification
Tasks
⢠New Platform & Product Dev.
⢠Plant Technology Support
⢠Promote Technology Transfer
⢠Customer Support
⢠New Design Tools Implementation
3. 3Š KEMET Electronics. All Rights Reserved.
Film and Paper Dielectrics Through Hole (THT)
and Surface Mounted (SMD) Technologies
PP
THT
Paper
THT
SMD
PET
THT
SMD
PEN
THT
SMD
PPS
THT
SMD
PP PAPER PET PEN PPS
Polypropylene Impregnated
Cellulose
Polyethylene
Terephthalate
Polyethylene
Naphthalate
Polyphenylene
Sulfide
4. 4Š KEMET Electronics. All Rights Reserved.
4Š KEMET Electronics. All Rights Reserved.
PET
⢠Highest Dielectric Constant in
Film Technology (3.3)
â Volumetric Efficiency
⢠Excellent Self-Healing Property
Applications
⢠DC & AC applications
⢠By Passing
⢠Blocking
⢠Coupling and Decoupling
⢠Timing and Filters
PEN
⢠High Temperature capability
⢠Relative High Dielectric
Constant 3.0 and Strength
⢠High temperature Dielectric
Applications
⢠DC applications
â similar to X7R ceramic
⢠By-pass
⢠Blocking
⢠Coupling and Decoupling
⢠Timing and Filters
PPS
⢠Low Loses
⢠Wide operating temperature
ranges up to 170 °C (extended)
⢠High Stability in Temperature
Applications
⢠DC applications
â Similar to C0G MLCC
⢠High temperature
⢠Timing and Filters
⢠Oscillating Circuits
Main Dielectric Characteristic
5. 5Š KEMET Electronics. All Rights Reserved.
Key Comparisons of Dielectrics
Properties and Capabilities (per Series)
Range Self-Healing Temperature Stability
Excellent PET
(F161, JSN)
PPS
(LDB, SMC, SPC)
PPS
(LDB, SMC, SPC)
Good PEN
(LDE, GMC, GPC)
PEN
(LDE, GMC, GPC)
PET
(F161, JSN)
Fair PPS
(LDB, SMC, SPC)
PET
(F161, JSN)
PEN
(LDE, GMC, GPC)
6. 6Š KEMET Electronics. All Rights Reserved.
SMD Film Encapsulation Types
and Focus Series LDE and F161
Dielectric
Encapsulation PET PEN PPS Key Notes
Encapsulated F161
GMC
GPC
SMC
SPC
Protection against
washing processes
and harsh
environment
applications
Unencapsulated
(Naked)
JSN LDE LDB
Best Volumetric
Efficient
Applications
requiring
miniaturization
7. 7Š KEMET Electronics. All Rights Reserved.
Unencapsulated vs. Encapsulated SMD Film
Unencapsulated: Single & Jumbo
⢠Good solder withstand
⢠Acceptable environmental performance
in standard applications
⢠Small physical size
⢠Potentially lower cost in small sizes
Encapsulated
⢠Better environmental performance, resistance to
moisture and chemicals
⢠Large physical size (vertical mounting is viable)
⢠Potentially higher cost in small sizes
8. 8Š KEMET Electronics. All Rights Reserved.
Vertical Mounting of Encapsulated Film Capacitor
Example: GMC, 1.0ÂľF; 100V; 6560
Vertical Mounting
helps to reduce the
surface area in the
PCB for the
capacitor chip
⢠Chip Size
6560
⢠footprint
⢠16.5 mm
⢠15 mm
⢠247mm2
Horizontal
Mounting
⢠Chip Size
6528
⢠footprint
⢠16.5 mm
⢠7 mm
⢠116 mm2
Vertical
Mounting
9. 9Š KEMET Electronics. All Rights Reserved.
SMD Film Metallization Types and Applications
Dielectric
Metallization
Single Metallized
Single Dielectric layer
Double Metallized
Single Dielectric Layer
PET F161, JSN ---
PEN GMC, LDE GPC
PPS SMC, LDB SPC
⢠For High miniaturization and
volumetrically efficient designs.
⢠General DC and AC applications.
⢠For High frequency,
current and high dv/dt
requirements. Example: High
Speed Circuits; Pulse; Snubber.
10. 10Š KEMET Electronics. All Rights Reserved.
Typical SMD Film Capacitor
Applications and Recommended Series
⢠Filtering: F161
⢠Decoupling and Coupling Circuits: LDE, F161
⢠Timing circuits Stable in Temperature: SMC
⢠Oscillating Circuits Stable in Frequency: SMC
⢠Bulk (DC-Link) in Low Power Applications: F161, JSN
10
11. 11Š KEMET Electronics. All Rights Reserved.
SMD Film Capacitor Applications
Applications requiring High Reliability, Performance and Stability
11
Automotive
Telecommunication & Data Network
Industrial Power Converters
Instrumentation and Audio
Sensors
12. 12Š KEMET Electronics. All Rights Reserved.
Advantages of SMD Film versus SMD MLCC
⢠Self Healing Capability
⢠No (DC, AC) Voltage dependence of Capacitance and DF
⢠No Susceptible to Flex-Crack
⢠High Stability in Temperature and Frequency
⢠No Aging Effect on Capacitance Value
⢠Low Equivalent Series Resistance (ESR)
⢠No Piezoelectric Noise Effect as Class II (X7R, X5R), and III MLCC
⢠Lower Self-Heating in AC applications vs. Class III and III MLCC
⢠Typical failure mode at the end of life is Open
⢠Low Dielectric Absorption
⢠Shorter Lead-Time
13. 13Š KEMET Electronics. All Rights Reserved.
Capacitance Vs. Temperature
Polyester (PEN) vs. Class II (X7R) MLCC
1 KHz 100 KHz
-20%
-15%
-10%
-5%
0%
5%
-55 -30 -5 20 45 70 95 120 145
T [°C]
X7R
PEN
-20%
-15%
-10%
-5%
0%
5%
-55 -30 -5 20 45 70 95 120 145
T [°C]
PEN
X7R
14. 14Š KEMET Electronics. All Rights Reserved.
SMD Film vs Ceramic Capacitance Stability
Capacitance Change vs. Temperature Capacitance Change vs. DC Bias Voltage
15. 15Š KEMET Electronics. All Rights Reserved.
Film Chip Selection
for Crossing MLCC
Potential
SMD FilmNo SMD Film
Y
Design
Requirements
1206 ⤠Size?
NO
16 Vdc ⤠V
V ⤠1,000 Vdc?
YES YESYES
NO NO
1 nF ⤠C
C ⤠12 ΟF?
16. 16Š KEMET Electronics. All Rights Reserved.
SMD Film Capacitor Manufacturers
KEMET
AVX
WIMA
NC NIC Components Corp.
Panasonic
ITW Paktron
Hitachi
Cornell Dubilier
Electronic Concepts Inc.
SAMWHA Capacitor Co.
Suntan Technology
KEMET is one of the world leaders
manufacturers offering the largest
portfolio of SMD Film Capacitors
19. 19Š KEMET Electronics. All Rights Reserved.
Jumbo Stacked Naked SMD Film Capacitor (JSN)
⢠Metallized PET
⢠Tinned copper lead frames
⢠High Current Capability and Resonance
Frequency (Low ESR and ESL)
⢠High Frequency SMPS
⢠DC/DC and AC/DC Converters
â Input and Output Filter
â DC-Link capacitor
⢠Automotive Rated (AEC-Q200)
Dielectric Type
Capacitance
(ÎźF)
Best tolerance
%
Voltage
(VDC)
EIA
Size
Temperature
(C°)
PET Unencapsulated
5.6
82
Âą10%
63
250
6080
61115
-55 °C
+125 °C
20. 20Š KEMET Electronics. All Rights Reserved.
SMP253 Metallized Impregnated Paper
Class Y2, 250 VAC
⢠ENEC, UL tested, pending Approval
⢠Good resistance to ionization
⢠High dV/dt Capability
⢠Excellent Stability and Reliability
⢠Electromagnetic Interference Suppressor in
Y2 Applications. Line and Neutral to Ground
Dielectric Type
Capacitance
(ÎźF)
Best tolerance
%
Voltage
(VAC)
EIA
Size
Temperature
(C°)
Paper Encapsulated
0.001
0.0047
Âą10% 250 5045
-40 °C
+100 °C