Extended Lifetime Aluminum Electrolytic Capacitors

Extended Lifetime
Aluminum Electrolytic Capacitors
Longer Life Applications – End Products
Component Life Time Behavior
Review of Life Time Ratings
Selection Based upon Lifetime Ratings
Extended Lifetime Products
+150°C & +125°C Rated Products
Example Application Review
Component Technology Comparison
Competition Cross-Reference
NIC Global Technical Support Contacts
Any questions on the following material, please contact:
Jim Wright, NIC Components Corp.
[email protected] 631-396-7500 x213
Or - NIC Technical support @ [email protected]
1
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Longer Life End Products & Applications
In designing a product, the engineer must assure that the shortestlived component lasts long enough to provide a useful service life for
the equipment
LED, Florescent & Induction Lighting
+60,000 Hrs Lifetime
About 10 years burning on 6000hrs /year (~70% of time)
Indeed on a 12-hour switching cycle, lamps are
shown to achieve a massive 80,000 hours life
when operated on electronic ballasts.
Power management for
redundant systems
Fault-tolerant critical power supplies
Digital Home Appliances
>10 Year Life Span
80,000-hour ratings for servers, power
supplies and medical applications
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Electrolytic Capacitor - Life Time Behavior
Wound Capacitor
Element
X-Ray
Saturated with
Liquid Electrolyte
Liquid Electrolyte Construction
Aluminum Electrolytic Capacitors
Most common & highest volume
construction used globally
( ~100 Billion Units / Year )
Liquid electrolyte construction has
advantages and disadvantages
Advantages (pros):
Disadvantages (cons):
Low Cost
Surge Resistant
Self Healing
High Capacitance
High Voltage
U Limited Lifetime
U Wear out
U Typically larger size
than Tantalum & MLCC
9
9
9
9
9
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Electrolytic Capacitor - Life Time Behavior
Component Lifetime Estimates are based upon circuit behaviour expectation
•
Component wear-out is point when capacitor function degrades circuit performance below
minimum performance expectation
•
Goal is to select component to meet the end use equipment lifetime requirement, prior to
capacitor wear out
Bathtub Curve
equipment
lifetime
Burn-In Failures typically
removed from population
during 100% component
reforming – aging process
(At elevated temp & voltage)
Wear Out
When capacitor function degrades
circuit performance below
minimum performance expectation
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Electrolytic Capacitor - Life Time Behavior
COMPARISON EXAMPLE
Capacitor Lifetime Performance Comparison
10,000 hrs @ +105°C
8000 hrs @ +105°C
4000 hrs @ +105°C
2000 hrs @ +105°C
1000 hrs @ +105°C
equipment
lifetime
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Electrolytic Capacitor - Life Time Behavior
Performance Characteristic Change over Time @ Rated Temperature
1200uF @ 10VDC, 10x20mm Size: 4000 Hour Load Life Rating @ +105C @ WVDC
10,000 hours @ +105°C @ 10VDC
Capacitance
Change
(%)
Test Time (1000 hours)
Capacitance = 1200uF
1056uF
948uF
ƒ Dissipation of the liquid electrolyte from the capacitor reduces the cathode connection, resulting in capacitance
decrease & DF (ESR) increase
ƒ The rate of dissipation follows the Arrhenius equation for chemical reactions
9 Temperature affects how quickly a reaction occurs
9 Reaction rate will double for each 10°C increase in temperature (rule of thumb)
How much does temperature affect reaction rate within liquid electrolyte aluminum electrolytic capacitors?
Î Capacitor life time expectation doubles for 10°C decrease in operating temperature
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Electrolytic Capacitor - Life Time Behavior
Performance Characteristic Change over Time @ Rated Temperature
1200uF @ 10VDC, 10x20mm Size: 4000 Hour Load Life Rating @ +105C @ WVDC
DF
10,000 hours @ +105°C @ 10VDC
Loss
Tangent
(%)
Test Time (1000 hours)
Tan δ = 0.19
0.38
0.66 ohm
120Hz ESR (Max) = 0.26 ohm
ƒ Increasing resistive losses over time
ƒ Capacitor becomes less efficient over time of operation
ƒ ESR (Equivalent Series Resistance) increases over time
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Life Estimate – Operating Temperature
Estimated Life (Hours) Operation
Ratings (Hours) @ Rated VDC / Estimated Life (Hours) @ Rated VDC
General
Purpose
High
Reflow
Rated
Low ESR
High
Reflow
Rated
Low ESR
6.3~
100VDC
Low ESR
+125°C
6.3~
100VDC
Long Life
6.3~
50VDC
Temp
NACE
NAWE
NAZU
NAZT
NATT
NAZV
+125°C
-
-
-
-
2,000
-
+105°C
-
1,000
3,000
5,000
8,000
10,000
+95°C
-
2,000
6,000
10,000
16,000
20,000
+85°C
2,000
6,000
12,000
20,000
32,000
40,000
+75°C
4,000
12,000
24,000
40,000
64,000
80,000
+65°C
8,000
24,000
48,000
80,000
128,000
>15 years
+55°C
16,000
48,000
96,000
>15 years
>15 years
>15 years
+45°C
32,000
96,000
>15 years
>15 years
>15 years
>15 years
5 years
10 years
Convert Hours to Years (24/7)
Hours
Years
Hours
Years
1,000
0.1
24,000
2.7
2,000
0.2
32,000
3.7
3,000
0.3
40,000
4.6
4,000
0.5
43,800
5.0
5,000
0.6
48,000
5.5
6,000
0.7
64,000
7.3
8,000
0.9
80,000
9.1
10,000
1.1
87,600
10.0
12,000
1.4
96,000
11.0
16,000
1.8
128,000
14.6
20,000
2.3
160,000
>15
Typical Use
Temperature
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Capacitor Specification Review
Specification Sheet
Load Life Rated at
maximum rated
temperature (i.e. +105°C)
and WVDC
Load Life Rating by
Component Diameter
( Ø mm )
Load Life Test Limits
NOTE: Possible variation in test limits between
component manufacturers
Example: ±30% instead of ±20% limit for Δ Capacitance
Based upon endurance test
results performed by
component manufacturer
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Extended Lifetime Rated Products : +105°C
+105°C
10
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Extended Lifetime Rated Products
+150°C & +125°C
Maximum
Temperature
Rating
Load Life
Rating
NIC
Series
Temp.
Range
Type /
Voltage
Ratings
+150°C
1000 Hrs
NRE-WX
LDD
-40 ~ +150°C
Special Temp /
10 - 63VDC
+125°C
3000 Hrs
1500 Hrs
NSPE-T
SMT
-55 ~ +125°C
Hybrid Low ESR /
Special Temp
25 - 63VDC
+125°C
2000 Hrs
NSPE-U
SMT
-55 ~ +125°C
Hybrid Low ESR /
Special Temp
6.3 - 16VDC
+125°C
2000 Hrs
1500 Hrs
1000 Hrs
NATT
SMT
-40 ~ +125°C
Special Temp /
6.3 - 100VDC
+125°C
2000 Hrs
NATK
SMT
-40 ~ +125°C
Special Temp /
16 - 35VDC
+125°C
2000 Hrs
1000 Hrs
NRWX
LDD
-55 ~ +125°C
Special Temp /
10 - 50VDC
Type
Temp.
+150°C
Load Life Estimation (Hours)
1000 hrs
+140°C
2000 hrs
+130°C
4000 hrs
+120°C
Hours
Years
8,000
0.9
8000 hrs
16,000
1.8
+110°C
16,000 hrs
43,800
5
+105°C
22,627 hrs
87,600
10
+95°C
45,250 hrs
+85°C
90,500 hrs
131,400
15
+75°C
> 15 years
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Extended Lifetime Rated Products
+150°C & +125°C
Maximum
Temperature
Rating
Load Life
Rating
NIC
Series
Temp.
Range
Type /
Voltage
Ratings
+150°C
1000 Hrs
NRE-WX
LDD
-40 ~ +150°C
Special Temp /
10 - 63VDC
+125°C
3000 Hrs
1500 Hrs
NSPE-T
SMT
-55 ~ +125°C
Hybrid Low ESR /
Special Temp
25 - 63VDC
+125°C
2000 Hrs
NSPE-U
SMT
-55 ~ +125°C
Hybrid Low ESR /
Special Temp
6.3 - 16VDC
+125°C
2000 Hrs
1500 Hrs
1000 Hrs
NATT
SMT
-40 ~ +125°C
Special Temp /
6.3 - 100VDC
+125°C
2000 Hrs
NATK
SMT
-40 ~ +125°C
Special Temp /
16 - 35VDC
+125°C
2000 Hrs
1000 Hrs
NRWX
LDD
-55 ~ +125°C
Special Temp /
10 - 50VDC
Temp.
Type
Load Life Estimation (Hours)
+125°C
2000 hrs
+115°C
4000 hrs
+105°C
8000 hrs
+95°C
16,000 hrs
+85°C
32,000 hrs
+75°C
64,000 hrs
+65°C
128,000 hrs
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Hours
Years
8,000
0.9
16,000
1.8
32,000
3.7
64,000
7.3
128,000
14.6
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Extended Lifetime Rated Products
+105°C
Maximum
Temperature
Rating
Load Life
Rating
NIC
Series
(PDF)
Temp.
Range
Type /
Voltage
Ratings
+105°C
12,000 Hrs
10,000 Hrs
NRBX
LDD
-25 ~ +105°C
Long Life /
160 - 450VDC
+105°C
10,000 Hrs
7000 Hrs
5000 Hrs
NSPE-H
SMT
-55 ~ +105°C
Hybrid Low ESR /
10Khrs SMT
25 - 100VDC
+105°C
10,000 Hrs
7000 Hrs
NAZV
SMT
-25 ~ +105°C
10Khrs SMT
6.3 - 50VDC
+105°C
10,000 Hrs
NRGB
LDD
-25 ~ +105°C
10Khrs All Sizes /
10 - 100VDC
+105°C
10,000 Hrs
8000 Hrs
6000 Hrs
NRSH
LDD
-40 ~ +105°C
Low ESR /
6.3 - 50VDC
+105°C
10,000 Hrs
8000 Hrs
7000 Hrs
6000 Hrs
5000 Hrs
4000 Hrs
NRE-HL
LDD
-40 ~ +105°C
Low ESR /
6.3 - 100VDC
+105°C
10,000 Hrs
8000 Hrs
7000 Hrs
5000 Hrs
4000 Hrs
2000 Hrs
NRE-FL
LDD
-40 ~ +105°C
Low ESR /
6.3 - 250VDC
+105°C
10,000 Hrs
8000 Hrs
5000 Hrs
NRB-XS
LDD
-25 ~ +105°C
High RC Rated /
160 - 450VDC
Temp.
+105°C
+95°C
+85°C
+75°C
+65°C
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Type
Load Life Estimation (Hours)
10,000 hrs
20,000 hrs
40,000 hrs
80,000 hrs
> 15 years
Hours
10,000
20,000
40,000
80,000
Years
1.1
2.3
4.6
9.1
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Lighting Circuit Application - Aluminum Electrolytic Capacitors
GOAL:
9+ Years Operation
80,000 Hrs @ +75°C = 10,000 Hrs @ +105°C
200uF @ ≥20VDC
www.niccomp.com/catalog/NRGB.pdf
•
•
Radial Leaded
10,000 hours @ +105°C
– 2 X 100uF
– 25VDC
PN: NRGB101M25V6.3X11F
100 µF, 25VDC, 6.3x11mm 2.5mm LS
-40C ~+105C
10,000 hrs @ +105°C
40,000 hrs @ +85°C
80,000 hrs @ +75°C
>15 years @ +65°C
Available
Today
Low Cost &
Smallest Size
Solution
100uF / 20V
100uF / 20V
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Technology Comparison - Capacitors
For higher voltage requirements (>16VDC) look to aluminium electrolytic capacitors
–
Lower cost solution
• Aluminium E-cap :
– 100uF @ 25VDC ≈ $0.11 each
– 220uF @ 25VDC ≈ $0.18 each
• Tantalum E-cap:
– 100uF @ 25VDC = >$0.75 each
–
Wide range of offerings CVs – sizes: SMT & LDD
–
Voltages to 450VDC
–
Transient resistant:
– EOS resistant (Surge rating
– Reverse bias tolerant
–
Stable characteristic under voltage bias
– Superior to high cap ceramic MLCCs
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Competition Comparison
Cross Reference – Extended Lifetime Aluminium Electrolytic Capacitors
NIC
Series
Type
Load Life
Rating
Category
Temp
ELNA
EPCOS
NICHICON
PANASONIC
RUBYCON
UCC
NRE-WX
LDD
1000 hrs
150°C
●●●
●●●
UBX
●●●
RX50
●●●
NATT
SMT
2,000 hrs
125°C
●●●
B41161
UCJ
EEVTG
●●●
●●●
NRWX
LDD
2,000 hrs
125°C
●●●
●●●
●●●
●●●
●●●
●●●
NRBX
LDD
12,000 hrs
105°C
RJ4
B43858
UCA
EEUED
BXA
KXG, KXJ
NSPE-H
SMT
10,000 hrs
105°C
●●●
●●●
PCF
3
●●●
●●●
NAZV
SMT
10,000 hrs
105°C
●●●
●●●
UCW
●●●
●●●
MZE
NRGB
LDD
10,000 hrs
105°C
●●●
●●●
●●●
●●●
YXM
●●●
NRSH
LDD
10,000 hrs
105°C
RJF
●●●
UHV
●●●
ZLH
KZH
NRE-HL
LDD
10,000 hrs
105°C
RJL
B41888
●●●
●●●
ZL
EKY
NRE-FL
LDD
10,000 hrs
105°C
●●●
B41888
●●●
●●●
YXF
KMF, KMY
NRB-XS
LDD
10,000 hrs
105°C
●●●
●●●
UCA
EEUEE
BXC
KXG
NRSZC
LDD
7,000 hrs
105°C
●●●
B41863
UPW
EEUFC
●●●
●●●
NRSX
LDD
7,000 hrs
105°C
RJ3, RJH
●●●
UPF, UPL
EEAFC
●●●
LXZ, KMF
1
PXH
2
Notes:
1 EPCOS B41161 series is +125°C, load life is 1000 hours; ~4000 hours @ +105°C
2 UCC PXH is solid polymer, but only rated 1000 hours & 20VDC Max
3 NICHICON PCF is solid polymer, but only rated 2000 hours & 25VDC Max
16
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NIC Technical Support
Î NIC Corporate
NIC Components Corp.
70 Maxess Road, Melville, NY USA 11747
TEL: 1-631-396-7500
www.NICcomp.com
Covering North America
Jim Wright (VP - Technology) [email protected] x 213
Paul Harris (Technical Manager) [email protected] x 205
Matt Ciesinski (Product Engineer & Product Compliance Manager) [email protected] x 265
Mike Mack (Associate Engineer) [email protected] NIC Lab x 331
Î NIC Singapore
NIC Components Asia Pte Ltd
701 Sims Drive, #07-01 LHK Building, Singapore 387383
TEL: 65-68441575
Covering SE Asia
Ng Chin Khoon “CK” (QA Manager - SE Asia) [email protected]
ÎNIC Europe
NIC Components Europe Ltd
14 Top Angel Buckingham Industrial Park
Buckingham MK18 1TH United Kingdom
TEL: +44 (1280) 813 737
Covering Europe
Tony Titre (Technical Sales Engineer - NIC Europe) [email protected]
17
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