Aluminum Electrolytic Capacitor/HFQ
Radial lead type
Series:
HFQ
Type :
A
Discontinued
s
Features
Endurance :105°C 1000 to 2000h
Low impedance (1/3 to 1/4 of Series HFE)
s
Specification
Operating Temp. Range
Rated W.V. Range
Nominal Cap. Range
Capacitance
DC leakage current
Dissipation Factor
Characteristics at Low
Temperature
-55 to + 105°C
6.3 to 63 V .DC
6.8 to 15000 µ F
±20 % (120Hz/+20°C)
I
<
0.01 CV or 3 (µ A) after 3 minutes
W.V. 6.3
10
16
25 35
50 63
tan
δ
0.22 0.19 0.16 0.14 0.12 0.10 0.08
(max.)
Add 0.02 per 1000µF for products of 1000µF or more
(120Hz /+20°C)
Impedance at -10°C, 100kHz
<
200 % of initial specified value at +20°C,100kHz.
(Impedance ratio at 100kHz)
After following life test with DC voltage and +105±2°C ripple current value applied. (The sum of
DC and ripple peak voltage shall not exceed the rated working voltage), the capacitors shall
meet the limits specified below.
Duration:1000 hours (φ4 to 8), 2000 hours (φ10 to 18) post test requirements at +20°C
Capacitance change
D.F.
DC leakage current
Endurance
±20% of the initial measured value
<200%
of the initial specified value
<
initial specified value
Shelf life
After storage for 1000 hours at +105±2°C with no voltage applied and then being stabilized at
+20°C, capacitor shall meet the limits specified in “Endurance”.
s
Explanation of Part Number
E
C
A
R.W.V. code
F
Q
Capacitance code
Option
Product Code
Series Code
s
Dimensions in mm (not to scale)
Vinyl sleeve
(>6.3mmdia)
Safety vent
φd±
0.05
φ10<
P
±
0.5
φ8>
P
±
0.5
φD+0.5
max
16
0.8
5
0.8
7.5
18
0.8
7.5
Mar. 2005
L
L
<16:L+1.0
max
L
>20:L+2.0
max
Body Dia.
φD
Body Length L
Lead Dia.
φd
Lead space P
s
0.45
1.5
0.5
2
0.5
2.5
0.6
3.5
0.6
5
4
14 min
min
φD+0.5
max
5
6.3
8
10
12.5
15 to25 30 to 40
0.6
5
Frequency correction factor for ripple current
W.V.
(V.DC)
Capacitance
(µF)
Frequency(Hz)
6.3 to 63
6.8 to 330
390 to 1000
1200 to 2200
2700 to 15000
60
0.55
0.70
0.75
0.80
120
0.65
0.75
0.80
0.85
1k
0.85
0.90
0.90
0.95
10k
0.90
0.95
0.95
1.00
100k
1.0
1.0
1.0
1.0
Design, Specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use.
Whenever a doubt about safety arises from this product, please inform us immediately for technical consulation without fail.
– EE26 –
Aluminum Electrolytic Capacitor
Application Guidelines
1. Circuit Design
E n s u r e t h a t operational and mounting conditions
follw the specified conditions detailed in the catalog
and specification sheets.
1.2 Operating Temperature and Life Expectancy
(1) Expected life is affected by operating temperature.
Generally, each 10°C reduction in temperature
will double the expected life. Use capacitors at
the lowest possible temperature below the
maximum guaranteed temperature.
(2) I f o p e ra t i n g c o n d i t i o n s ex c e e d t h e m a x i m u m
guaranteed limit, rapid eIectrical parameter
deterioration will occur, and irreversible damage
will result.
Check for maximum capacitor operating tempera-
tures including ambient temperature, inter nal
capacitor temperature rise caused by ripple current,
a n d t h e e f fe c t s o f r a d i a t e d h e a t f r o m p ow e r
transistors, IC?s or resistors.
Avoid placing components which could conduct
heat to the capacitor from the back side of the circuit
board.
(3)The formula for calculating expected Iife at lower
operating temperatures is as fllows;
L
2
= L
1
x 2
T
1
-
T
2
10
1.1 Operating Temperature and Frequency
E l e c t r o l y t i c c a p a c i t o r e l e c t r i c a l p a ra m e t e r s a r e
normally specified at 20°C temperature and 120Hz
frequency. These parameter s var y with changes in
t e m p e r a t u r e a n d f r e q u e n c y. C i r c u i t d e s i g n e r s
should take these changes into consideration.
(1) Effects of o p e ra t i n g t e m p e ra t u r e on electrical
parameters
a ) A t h i g h e r t e m p e ra t u r e s, l e a k a g e c u r r e n t a n d
c a p a c i t a n c e i n c r e a s e while equivalent series
resistance(ESR) decreases.
b)At l o w e r t e m p e r a t u r e s , l e a k a g e c u r r e n t a n d
c a p a c i t a n c e decrease while equivalent series
resistance(ESR) increases.
(2) Effects of fr e q u e n c y on e l e c t r i c a l p a r a m e t e r s
a)At higher frequencies, capacitance and
impedance decrease while tan
δ
increases.
b)At lower frequencies, r ipple current generated
heat will ri s e d u e t o a n increase in equivalent
series resistance (ESR).
where,
L
1
: Guaranteed life (h) at temperature, T
1
°
C
L
2
: Expected life (h) at temperature,T
2
°C
T
1
: Maximum operating temperature (°C)
T
2
: Actual operating temperature, ambient
temperature + temperature rise due to
ripple currentheating(°C)
A quick eference capacitor guide for estimating
exected life is included for your reference.
s
Expected Life Estimate Quick Reference Guide
Capacitor Ambient Temperature
120
110
100
90
80
70
60
50
40
s
Failure rate curve
2
1
3
4
1. 85°C2000h
2.105°C1000h
3.105°C2000h
4.105°C5000h
Initial failure period
Random failure period
Wear failure period
Failure rate
Life Time
24h
(h)
2000
5000
10,000
1
3
20,000
2
6
3
10
50,000 100,000 200,000
4 5
7
30
20
operat-
Years
ion
Time
8h/d
Years
15 20
Design, Specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use.
Whenever a doubt about safety arises from this product, please inform us immediately for technical consulation without fail.
Mar. 2005
–
EE16
–
Aluminum Electrolytic Capacitor
s
Typical failure modes and their factors
Faliure mode
Faliure mechanism (internal phenomenon)
Production factor
Application factor
Overvoltage applied
Vent operates
Increase in
internal pressure
•
Increase in inter-
•
nal temperature
•
Capacitance
reduction
•
tan
d
increase
•
Reduced cathode
foil capacitance
Reduced anode foil
capacitance
•
•
•
Excessive ripple current
•
Reverse voltage applied
•
Severe charging-discharging
AC voltage applied
•
•
Deterioration of
oxide film
Leakage current
increase
•
•
Electrolyte evapora-
tion
•
•
Short circuit
Insulation breakdown of film
or electrolytic paper
•
•
Burr(s) on foil leads
Metal particles
in capacitor
Stress applied to leads
•
•
Insufficient
electrolyte
Used for a long period of time
Defect of oxide film
•
Used for a high temperature
Leads improperly
connected
Leads improperly connected
•
Mechanical stress
Open
•
•
Use of Halogenated solvent
Corrosion
Infiltration of Cl
•
Use of adhesive
Use of coating material
Design, Specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use.
Whenever a doubt about safety arises from this product, please inform us immediately for technical consulation without fail.
Mar. 2005
–
EE17
–
Embedded System
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