Aluminum electrolytic capacitors
Single-ended capacitors
Series/Type:
Date:
B41853, B41863
November 2008
© EPCOS AG 2008. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Single-ended capacitors
For airbag applications
105
°C
B41853, B41863
Long-life grade capacitors
Applications
Automotive electronics: energy reserve for airbag application
Features
Compact design
High CV product
B41853, designed for severe charge and discharge conditions
B41863, designed for standard charge and discharge
conditions
Construction
Radial leads
Charge/discharge-proof, polar
Aluminum case with insulating sleeve
Minus pole marking on the insulating sleeve
Stand-off rubber seal
Case with safety vent
Delivery mode
Terminal configurations and packing:
Bulk
Taped, Ammo pack
Cut
Kinked
PAPR (protection against polarity reversal):
crimped leads, J leads, bent leads
Refer to chapter "Single-ended capacitors Taping, packing
and lead configurations" for further details and ordering
example.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 27
B41853, B41863
For airbag applications
105
°C
Specifications and characteristics in brief
Rated voltage V
R
Surge voltage V
S
Rated capacitance C
R
Capacitance tolerance
Dissipation factor tan
δ
(20
°C,
120 Hz)
25 and 35 V DC
1.15 V
R
680 ... 10000 µF
0/+30% A
For capacitance higher than 1000 µF add 0.02 for every increase of
1000 µF.
V
R
(V DC)
tan
δ
(max.)
Leakage current I
leak
(20
°C,
5 min)
Self-inductance ESL
Useful life
105
°C;
V
R
; I
AC,R
Requirements
25
0.16
35
0.14
Diameter (mm)
ESL (nH)
> 3000 h
∆C/C
tan
δ
I
leak
3000 h
∆C/C
tan
δ
I
leak
≤
12.5
20
16
26
18
34
≤ ±30%
of initial value
≤
3 times initial specified limit
≤
initial specified limit
Voltage endurance test
105
°C;
V
R
Post test requirements
≤ ±25%
of initial value
≤
2 times initial specified limit
≤
initial specified limit
Vibration resistance test
To IEC 60068-2-6, test Fc:
Displacement amplitude 1.5 mm, frequency range 10 … 2000 Hz,
acceleration max. 20
g,
duration 3
×
2 h.
Capacitor rigidly clamped by the aluminum case.
To IEC 60068-1:
55/105/56 ( 55
°C/+105 °C/56
days damp heat test)
AEC-Q200, IEC 60384-4
B41853
Acc. to IEC 60384-4,
AEC-Q200 and addendum 1
(see next page)
B41863
Acc. to IEC 60384-4 and AEC-Q200
IEC climatic category
Sectional specification
Charge and discharge
characteristics
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 27
B41853, B41863
For airbag applications
105
°C
Addendum 1:
B41853, charge and discharge test specification
t
C
= t
D
= 2s
R
1
R
2
25 V
2
Ω
25
Ω
35 V
2.8
Ω
35
Ω
Duration: 2000 h
Temperature: thermal cycling -40/85°C acc. to AEC-Q200 specification
Higher resistances (R
1
and R
2
) and longer test periods (t
C
and t
D
) are allowed when respecting
the temperatures and the total test duration specified above
For any other requirement condition, please contact your nearest EPCOS representation
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 27
B41853, B41863
For airbag applications
105
°C
Dimensional drawing
With stand-off rubber seal
Diameters (mm): 10, 12.5, 16, 18
Dimensions and weights
Dimensions (mm)
d +0.5
10
12.5
12.5
16
16
16
18
18
18
18
18
Approx. weight
g
2.6
3.6
4.5
5.5
7.5
7.8
8.9
9.0
11.0
13.0
16.0
l
20 +2.0
20 +2.0
25 +2.0
20 +2.0
25 +2.0
31.5 +2.0
20 +2.0
25 +2.0
31.5 +2.0
35 +2.0
40 +2.5
a
±0.5
5.0
5.0
5.0
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
b
0.60
±0.05
0.60
±0.05
0.60
±0.05
0.80
±0.05
0.80
±0.05
0.80
±0.05
0.80
±0.1
0.80
±0.1
0.80
±0.1
0.80
±0.1
0.80
±0.1
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 27
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