Aluminum electrolytic capacitors
Capacitors with screw terminals
Series/Type:
Date:
B43741, B43761
October 2015
© EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
Capacitors with screw terminals
Extra long useful life
105
°C
B43741, B43761
Long-life grade capacitors
Applications
Frequency converters
Wind power converters
Solar inverters
Uninterruptible power supplies
Professional power supplies
Features
Outstanding reliability
Good thermal characteristics and high ripple current capability
Extra long useful life
Wide temperature range
All-welded constructions ensures reliable electrical contact
PAPR terminals available (Protection Against Polarity Reversal)
Version available with an optimized base cooling design (heat
sink mounting) and featuring up to 2 times the ripple current
capability
Version with low-inductance design available (V
R
≤
400 V DC)
RoHS-compatible
Construction
Charge-discharge proof, polar
Aluminum case with insulating sleeve
Poles with screw terminal connections
Mounting with ring clips, clamps or threaded stud
The bases of types with threaded stud are not insulated
B43741
B43761
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 22
B43741, B43761
Extra long useful life
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)
Leakage current I
leak
(20
°C,
5 min)
Self-inductance ESL
d = 51.6 mm: approx. 15 nH
d
≥
64.3 mm: approx. 20 nH
Capacitors with low-inductance design:
d
≥
64.3 mm: approx. 13 nH
350 ... 500 V DC
1.10 V
R
680 ... 18000 µF
±20%
M
≤
0.20
Useful life
1)
105
°C;
V
R
; I
AC,R
Requirements:
> 6000 h
∆C/C
≤
15% of initial value
tan
δ
≤
1.75 times initial specified limit
I
leak
≤
initial specified limit
Voltage endurance test
Post test requirements:
105
°C;
V
R
2000 h
∆C/C
≤
10% of initial value
tan
δ
≤
1.3 times initial specified limit
I
leak
≤
initial specified limit
Vibration resistance test To IEC 60068-2-6, test Fc: Frequency range 10 ... 55 Hz, displacement
amplitude 0.75 mm, acceleration max. 10
g,
duration 3
×
2 h.
Capacitor mounted by its body which is rigidly clamped to the work
surface.
Characteristics at low
temperature
Max. impedance
ratio at 100 Hz
V
R
Z
-25
°
C
/ Z
20
°
C
Z
-40
°
C
/ Z
20
°
C
≤
400 V
4
10
≥
450 V
3
8
IEC climatic category
Detail specification
Sectional specification
To IEC 60068-1: 40/105/56 ( 40
°C/+105 °C/56
days damp heat test)
Similar to CECC 30301-803, CECC 30301-807
IEC 60384-4
1) Refer to chapter "General technical information, 5 Useful life" on how to interpret useful life.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 22
B43741, B43761
Extra long useful life
105
°C
Ripple current capability
Due to the ripple current capability of the contact elements, the following current upper limits must
not be exceeded:
Capacitor diameter
I
AC,max
Dimensional drawings
B43741
Ring clip/clamp mounting
B43761
Threaded stud mounting
51.6 mm
45 A
64.3 mm
60 A
76.9 mm
67 A
90 mm
80 A
For types with threaded stud the base is not insulated. Also refer to the mounting instructions in
chapter "Capacitors with screw terminals Accessories".
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 22
B43741, B43761
Extra long useful life
105
°C
Dimensions and weights
(Standard capacitors, without heat sink)
Ter-
minal
M5
M5
M5
M5
M5
M5
M5
M5
M5
M5
M5
M6
M6
M6
M6
M6
M6
M6
M6
M6
M6
M6
M6
M6
M6
M6
M6
Dimensions (mm) with insulating sleeve
d
l
±1
l
1
±1
l
2
+0/ 1 d
1
51.6 +0.5/
51.6 +0.5/
51.6 +0.5/
51.6 +0.5/
51.6 +0.5/
64.3 +0.5/
64.3 +0.5/
64.3 +0.5/
64.3 +0.5/
64.3 +0.5/
64.3 +0.5/
76.9 +0.5/
76.9 +0.5/
76.9 +0.5/
76.9 +0.5/
76.9 +0.5/
76.9 +0.5/
76.9 +0.5/
76.9 +0.5/
76.9 +0.5/
90.0 +0.5/
90.0 +0.5/
90.0 +0.5/
90.0 +0.5/
90.0 +0.5/
90.0 +0.5/
90.0 +0.5/
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1.5
1.5
1.5
1.5
1.5
1.5
1.5
80.7
96.7
105.7
118.2
130.7
80.7
96.7
105.7
118.2
130.7
143.2
96.7
105.7
118.2
130.7
143.2
156.2
168.7
190.7
220.7
97.0
120.0
144.5
170.0
190.0
197.0
221.0
87.2
103.2
112.2
124.7
137.2
87.2
103.2
112.2
124.7
137.2
149.7
102.5
111.5
124.0
136.5
149.0
162.0
174.5
196.5
226.5
102.3
125.3
149.8
175.3
196.3
202.3
226.3
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
M12
d
2
max. a +0.2/ 0.4
10.2
10.2
10.2
10.2
10.2
13.2
13.2
13.2
13.2
13.2
13.2
17.7
17.7
17.7
17.7
17.7
17.7
17.7
17.7
17.7
17.7
17.7
17.7
17.7
17.7
17.7
17.7
22.2
22.2
22.2
22.2
22.2
28.5
28.5
28.5
28.5
28.5
28.5
31.7
31.7
31.7
31.7
31.7
31.7
31.7
31.7
31.7
31.7
31.7
31.7
31.7
31.7
31.7
31.7
Approx.
weight (g)
220
250
280
320
350
370
400
440
510
600
630
570
620
700
800
840
920
1000
1150
1300
770
1000
1200
1400
1650
1700
1900
For low inductance design the following deviation applies:
d = 64.3 mm: l
1
0.7 mm
d = 90.0 mm: l
1
1.7 mm
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 22
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