Datasheet
Table Of Contents
- Overview
- Applications
- Benefits
- Part Number System
- Performance Characteristics
- Surge Voltage
- Test Method & Performance
- Dimensions – Millimeters
- Dimensions – Inches
- Termination Tables
- Shelf Life
- Re-Age (Reforming) Procedure
- Reliability
- Failure Rate
- Environmental Compliance
- Table 1 – Ratings & Part Number Reference
- Mechanical Data
- Marking
- Construction
- Construction Data
- KEMET Electronics Corporation Sales Offices
- Disclaimer
7© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard A4075_ALS70_71 • 7/15/2020
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Screw Terminal Aluminum Electrolytic Capacitors – ALS70/71, High CV, +85°C
MTBF
The mean time between failures (MTBF) is simply the inverse of the failure rate.
MTBF= 1/λ
wear out
early failures
operational life
Failure Rate
Time
The failure rate is derived from our periodic test results. The failure rate (λ
R
) is, therefore, only given at test temperature for
life tests. An estimation is also given at 40°C. The expected failure rate for this capacitor range is based on our periodic test
results for capacitors with structural similarity. Failure rate is frequently quoted in FIT (Failures In Time) where 1 FIT = 1 x 10
-9
failures per hour. Failure rate per hour includes both catastrophic and parametric failures.
T
a
Failure Rate per Hour
85°C 220 FIT
40°C 10 FIT
Environmental Compliance
All Part Numbers in this datasheet are Reach and RoHS compliant and Halogen-Free.
As an environmentally conscious company, KEMET is working continuously with improvements concerning the environmental
effects of both our capacitors and their production.
In Europe (RoHS Directive) and in some other geographical areas such as China, legislation has been put in place to prevent
the use of some hazardous materials, such as lead (Pb), in electronic equipment. All products in this catalog are produced
to help our customers' obligations to guarantee their products and fulll these legislative requirements. The only material of
concern in our products has been lead (Pb), which has been removed from all designs to fulll the requirement of containing
less than 0.1% of lead in any homogeneous material. KEMET will closely follow any changes in legislation worldwide and
make any necessary changes in its products, whenever needed.
Some customer segments such as medical, military and automotive electronics may still require the use of lead in electrode
coatings. To clarify the situation and distinguish products from each other, a special symbol is used on the packaging labels
for RoHS compatible capacitors.
Due to customer requirements, there may appear additional markings such as lead-free (LF), or lead-free wires (LFW) on the
label.