Aluminum electrolytic capacitors
Axial-lead and soldering star capacitors
Series/Type:
Date:
B41694, B41794
February 2011
© EPCOS AG 2011. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Axial-lead and soldering star capacitors
Low ESR
up to 140
°C
B41694, B41794
Applications
For automotive applications with high EMV requirementes
Features
Very high ripple current capability
Very low ESR at temperatures down to 55
°C
High vibration resistance
High reliability of 1000 h at up to 140
°C
Shelf life up to 15 years at storage temperatures up to 40
°C.
To ensure solderability, the capacitors should be built into the
application within one year of delivery. After a total of two
years' storage, the operating voltage must be applied for one
hour to ensure the specified leakage current.
Construction
Charge/discharge-proof, polar
Aluminum case with insulating sleeve
Negative pole connected to case
Terminals
Axial leads, welded to ensure perfect electrical contact
Also available with soldering stars
Taping and Packing
Axial-lead capacitors will be delivered in pallet package.
Capacitors with d
×
l
≤
16
×
30 mm are also available taped
on reel.
Soldering star capacitors are packed in cardboard.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 16
B41694, B41794
Low ESR
up to 140
°C
Specifications and characteristics in brief
Rated voltage V
R
Surge voltage V
S
Rated capacitance C
R
Capacitance tolerance
Leakage current I
leak
(5 min, 20
°C)
Self-inductance ESL
1)
Diameter d (mm)
Terminals
axial
Length l (mm)
25
29
30
39
49
soldering star
25
30
39
49
Useful life
140
°C;
V
R
; I
AC,R
125
°C;
V
R
; I
AC, R
85
°C;
V
R
; I
AC, max
40
°C;
V
R
; 2.1 I
AC, R
Voltage endurance test
125
°C;
V
R
> 1000 h
> 3000 h
> 8000 h
> 200000 h
2000 h
6
6
7
8
9
10
11
13
14
Requirements:
∆C/C ≤ ±30%
of initial value
ESR
≤
3 times initial specified limit
I
leak
≤
initial specified limit
Post test requirements:
∆C/C ≤ ±10%
of initial value
ESR
≤
1.3% initial specified limit
I
leak
≤
initial specified limit
21
24
29
33
34
38
45
50
12
14
22
38
16
18
20/21
Approx. ESL (nH)
25 and 40 V DC
1.15 V
R
330 ... 3900 µF
10/+30% Q
Vibration resistance test
To IEC 60068-2-6, test Fc:
Frequency range 10 Hz ... 2 kHz, displacement amplitude max.
1.5 mm, acceleration max. 20
g,
duration 3
×
2 h.
Capacitor mounted by its wire leads at a distance of (6
±1)
mm from
the case and additionally clamped by the case.
To IEC 60068-1:
55/125/56 ( 55
°C/+125 °C/56
days damp heat test)
Similar to CECC 30301-802
IEC 60384-4
IEC climatic category
Detail specification
Sectional specification
1) If optimum circuit design is used, the values are lower by 30%.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 16
B41694, B41794
Low ESR
up to 140
°C
B41694, Axial-lead capacitors
Dimensional drawing
Dimensions, weights and packing units
d
×
l
mm
12
×
30
14
×
25
14
×
30
16
×
30
16
×
39
18
×
30
18
×
39
20
×
29
21
×
39
21
×
49
d
max
×
I
max
mm
12.5
×
30.5
14.5
×
25.5
14.5
×
30.5
16.5
×
30.5
16.5
×
40
18.5
×
30.5
18.5
×
40
20.5
×
29.5
21.5
×
40
21.5
×
50
Approx. weight
g
5.1
5.7
6.8
8.9
11.7
11.1
14.7
13.5
20.0
25.0
Packing units (pcs.)
Pallet
Reel
288
450
200
350
200
350
180
250
180
160
160
140
140
110
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 16
B41694, B41794
Low ESR
up to 140
°C
B41794, Soldering star capacitors
Dimensional drawings
Mounting holes d = 12 mm ... 14 mm
Mounting holes d = 16 mm ... 21 mm
Dimensions, weights and packing units
d
×
l
mm
12
×
30
14
×
25
14
×
30
16
×
30
16
×
39
18
×
30
18
×
39
21
×
39
21
×
49
d
max
×
I
max
mm
13.5
×
32
15.5
×
27
15.5
×
32
17.5
×
32
17.5
×
41.5
19.5
×
32
19.5
×
41.5
22.5
×
41.5
22.5
×
51.5
c
±0.1
mm
12.5
14.5
14.5
16.5
16.5
18.5
18.5
21.5
21.5
e
±0.1
mm
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.5
3.5
Approx. weight
g
5.4
6.1
7.2
9.4
12.2
11.8
15.4
21.0
26.0
Packing units
pcs.
480
480
480
300
200
300
200
324
264
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 16
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