Aluminum electrolytic capacitors
Axial-lead and soldering star capacitors
Series/Type:
Date:
B41691, B41791
November 2012
© EPCOS AG 2012. 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 150
°C
B41691, B41791
Applications
Automotive electronics
Features
Long useful life, 2000 h at up to 150
°C
Low ESR also at 63 V DC
High ripple current capability
High vibration stability
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.
RoHS-compatible
Construction
Charge/discharge-proof, polar
Aluminum case with insulating sleeve
Negative pole connected to case
Terminals
Axial leads, welded to ensure perfect electrical contact
Soldering star for upright mounting on PCB available
Alternative axial-lead design with double-sided plates for
horizontal mounting available upon request
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
B41691, B41791
Low ESR
up to 150
°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
35
39
49
soldering star
25
30
35
39
49
Useful life
2)
150
°C;
V
R
; 0.5 I
AC,R
125
°C;
V
R
; I
AC,R
125
°C;
V
R
; I
AC,max
105
°C;
V
R
; I
AC,max
85
°C;
V
R
; I
AC,max
Voltage endurance test
125
°C;
V
R
> 2000 h
> 10000 h
> 4000 h
> 8000 h
> 15000 h
5000 h
6
6
7
8
9
9
11
13
14
Requirements:
∆C/C ≤ ±30%
of initial value
ESR
≤
3 times initial specified limit
3)
I
leak
≤
initial specified limit
8
10
21
24
29
31
33
38
45
50
34
12
14
22
16
18
30
38
20/21
Approx. ESL (nH)
25 ... 63 V DC
1.15 V
R
100 ... 4000 µF
10/+30% Q
Post test requirements:
∆C/C ≤ ±10%
of initial value
ESR
≤
1.3% initial specified limit
3)
I
leak
≤
initial specified limit
Vibration resistance
test
To IEC 60068-2-6, test Fc: Frequency range 10 Hz ... 2 kHz, displace-
ment 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%.
2) Refer to chapter "General technical information, 5 Useful life" on how to interpret useful life.
3) ESR
max
at 100 Hz, 20
°C
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 16
B41691, B41791
Low ESR
up to 150
°C
B41691, Axial-lead capacitors
Dimensional drawing
Dimensions, weights and packing units
d
×
l
mm
12
×
30
14
×
25
14
×
30
16
×
30
16
×
35
16
×
39
18
×
25
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
×
35.5
16.5
×
40
18.5
×
25.5
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
10.4
11.7
9.3
11.1
14.7
13.5
20.0
25.0
Packing units (pcs.)
Pallet
Reel
288
450
200
350
200
350
180
250
180
180
160
160
160
140
140
110
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 16
B41691, B41791
Low ESR
up to 150
°C
B41791, 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
×
35
16
×
39
18
×
25
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
×
37
17.5
×
41.5
19.5
×
27
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
16.5
18.5
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
3.0
3.0
3.5
3.5
Approx. weight
g
5.4
6.1
7.2
9.4
10.9
12.2
9.9
11.8
15.4
21.0
26.0
Packing units
pcs.
480
480
480
300
200
200
300
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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