Aluminum electrolytic capacitors
Capacitors with screw terminals
Series/Type:
Date:
B43703, B43723
February 2017
© EPCOS AG 2017. 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
Extremely compact
85
°C
B43703, B43723
Long-life grade capacitors
Applications
Frequency converters
Wind power converters
Solar inverters
Professional power supplies
Uninterruptible power supplies
Features
High CV product, i.e. extremely compact
High reliability and high ripple current capability
All-welded construction 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 (for V
R
≤
400 V DC)
RoHS-compatible
Construction
Charge-discharge proof, polar
Aluminum case, insulated with PVC sleeve
Version with PET insulation available upon request
Poles with screw terminal connections
Mounting with ring clips, clamps or threaded stud
Types with threaded stud are available with or without insulated
base
B43703
B43723
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 21
B43703, B43723
Extremely compact
85
°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 ... 450 V DC
1.10 V
R
1500 ... 22000 μF
±20%
M
≤
0.20
Useful life
1)
85
°C;
V
R
; I
AC,R
Requirements:
> 12000 h
ΔC/C
≤
15% of initial value
tan
δ
≤
1.75 times initial specified limit
I
leak
≤
initial specified limit
Voltage endurance test
Post test requirements:
85
°C;
V
R
2000 h
ΔC/C
≤
10% of initial value
tan
δ
≤
1.3 times initial specified limit
I
leak
≤
initial specified limit
Vibration resistance
To IEC 60068-2-6, test Fc: Frequency range 10 ... 55 Hz, displacement
test
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.
Max. impedance
Characteristics at low
V
R
350 V
400 V
450 V
ratio at 100 Hz
temperature
Z
-25
°
C
/ Z
20
°
C
2
3
3
Z
-40
°
C
/ Z
20
°
C
6
12
10
IEC climatic category
To IEC 60068-1:
V
R
= 350, 450 V DC: 40/085/56 ( 40
°C/+85 °C/56
days damp heat test)
V
R
= 400 V DC: 25/085/56 ( 25
°C/+85 °C/56
days damp heat test)
The capacitors can be operated in the temperature range of
40
°C
to +85
°C
but the impedance at 40
°C
must be taken into
consideration.
Similar to CECC 30301-803, CECC 30301-807
IEC 60384-4
Detail specification
Sectional specification
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 21
B43703, B43723
Extremely compact
85
°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
B43703
Ring clip/clamp mounting
B43723
Threaded stud mounting
51.6 mm
34 A
64.3 mm
57 A
76.9 mm
74 A
90 mm
89 A
For standard types with threaded stud the base is not insulated. Also refer to the mounting
instructions in chapter "Capacitors with screw terminals Accessories".
Screw terminals with UNF threads are available upon request.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 21
B43703, B43723
Extremely compact
85
°C
Dimensions and weights
(Standard capacitors, without heat sink)
Ter-
minal
M5
M5
M5
M5
M5
M5
M5
M5
M5
M5
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/
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/
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
80.7
96.7
105.7
118.2
130.7
80.7
96.7
118.2
130.7
143.2
96.7
105.7
118.2
130.7
156.2
190.7
220.7
120.0
144.5
170.0
197.0
87.2
103.2
112.2
124.7
137.2
87.2
103.2
124.7
137.2
149.7
102.5
111.5
124.0
136.5
162.0
196.5
226.5
125.3
149.8
175.3
202.3
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
Approx.
weight (g)
220
250
280
320
350
370
400
510
600
630
570
620
700
800
920
1150
1300
1000
1200
1400
1700
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
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
31.7
31.7
31.7
31.7
31.7
31.7
31.7
31.7
31.7
31.7
31.7
Tolerances of terminal thread respectively stud thread:
Terminal thread M5 and M6: 6H
Thread of stud M12: 6g
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 21
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