| |
RATING (hours) |
|
| +35°C |
+45°C |
+55°C |
+65°C |
+75°C |
+85°C |
| 32,000 |
16,000 |
8,000 |
4,000 |
2,000 |
1,000 |
| 64,000 |
32,000 |
16,000 |
8,000 |
4,000 |
2,000 |
| 96,000 |
48,000 |
24,000 |
12,000 |
6,000 |
3,000 |
| 128,000 |
64,000 |
32,000 |
16,000 |
8,000 |
4,000 |
| >15 yrs |
80,000 |
40,000 |
20,000 |
10,000 |
5,000 |
| |
RATING (hours) |
|
| +35°C |
+45°C |
+55°C |
+65°C |
+75°C |
+85°C |
+95°C |
+105°C |
| 128,000 |
64,000 |
32,000 |
16,000 |
8,000 |
4,000 |
2,000 |
1,000 |
| >15 yrs |
128,000 |
64,000 |
32,000 |
16,000 |
8,000 |
4,000 |
2,000 |
| >15 yrs |
>15 yrs |
96,000 |
48,000 |
24,000 |
12,000 |
6,000 |
3,000 |
| >15 yrs |
>15 yrs |
128,000 |
64,000 |
32,000 |
16,000 |
8,000 |
4,000 |
| >15 yrs |
>15 yrs |
>15 yrs |
80,000 |
40,000 |
20,000 |
10,000 |
5,000 |
| |
RATING (hours) |
| +35°C |
+45°C |
+55°C |
+65°C |
+75°C |
+85°C |
+95°C |
+105°C |
+115°C |
+125°C |
| >15 yrs |
>15 yrs |
128,000 |
64,000 |
32,000 |
16,000 |
8,000 |
4,000 |
2,000 |
1,000 |
| >15 yrs |
>15 yrs |
>15 yrs |
96,000 |
48,000 |
24,000 |
12,000 |
6,000 |
3,000 |
1,500 |
| >15 yrs |
>15 yrs |
>15 yrs |
128,000 |
64,000 |
32,000 |
16,000 |
8,000 |
4,000 |
2,000 |
16,000 hours = 1.83 years |
24,000 hours = 2.74 years
32,000 hours = 3.65 years |
48,000 hours = 5.48 years
64,000 hours = 7.31 years |
96,000 hours = 11.0 years
128,000 hours = 14.6 years |
>132,000 hours = >15 years
15 years is EIAJ-RCR-2367A maximum limit in view of the deterioration of capacitor seal materials |
:: Wear-Out Accelerators
Electrical Overstress | Corrosive Agents | Reduced Pressure
:: Load Life Rating Follows
Arrhenius Rate Law
Temperature increase of 10°C approximately doubles the rate of
the reaction
+ End-seal and electrolyte directly relates to component load
life rating
+ In-circuit wear out rate is chiefly dependent upon operating
temperature |
|
|
| Type |
NIC Series |
Package |
Features / Construction |
Estimated
Failure Rate (FIT) - Endurance |
SOLID ALUMINUM
Electrolytic Capacitor |
NPC
NSP
|
Molded Flat Chip
 |
Low Profile
Lower ESL**
Stacked
Element |
P/N: NSP101M6.3TRD3TR
[100uF / 6.3VDC]
 Acceleration Test Results @ Rated VDC & 105°C:
» Total Test Time = 19,796,000 hours
» No. of Failure = 0
» Failure Rate (FR) = 46 FIT
(60% confidence; 0.917/T)
Under typical use
conditions: 6.3VDC & +25°C; Failure Rate (FR) = 5.7 FIT
Field Failure Reporting:
» Total Test Time = 6,856,894,000 hours
» No. of Failure = 0
» Failure Rate (FR) = 0.13 FIT
(60% confidence; 0.917/T) |
NPC Series - Failure Rate / MTTF
» Acceleration Test Results @
Rated VDC & 105°C
» Test Conditions: 2000HR
@+105°C
» Total Testing Time (Hour) = 5,880,000
» No. of Failure = 0
» Failure Rate (FR) = 156 FIT
(60% confidence; 0.917/T)
» MTTF (Hour) = 6.41 X 10^6 hrs |
 Guideline: LINK
» FIT Rate Comparison (NPC to NSP)
» Typical Load Life Test Results
to 10,000 hours @ +105°C |
TANTALUM
Electrolytic Capacitor |
NTC-T
(MnO2
Cathode)
NTP
(Polymer
Cathode) |
Molded Flat Chip
 |
Small Size
Pressed
Element |
» Failure Rate (FR) = 74 FIT
@ 50%
voltage
de-rating &
3ohm/Volt series resistance |
| Guideline: LINK |
** - ESL - Equivalent
Series Inductance (nH): Lower ESL means better performance at
high frequency |
| 1 FIT = 1 FAILURE IN 1,000,000,000 HOURS |
Life
Formula
+105°C = 2000 hrs
+85°C = 20,000 hrs
+65°C = 200,000 hrs |
10,000 hours = 1.14 years |
20,000 hours = 2.28 years
30,000 hours = 3.42 years |
40,000 hours = 4.57 years
100,000 hours = 11.4 years |
200,000 hours = 22.8 years |
| NOTES: |
- Solid aluminum type (NPC & NSP)
exhibit better performance (than standard tantalum types)
under short-circuit failure modes.
- The cathode material [Polyethylene -Dioxythiophene (PEDT)]
exhibits increased resistance, which acts to limit - restrict
current flow thru shorted element. This will occur as internal
heat reaches +300°C
|
|
|
When operating at temperatures less than the RATED MAXIMUM use the
below table
in estimation
of 