Datasheet

Technical data
Operating temperature range Max. operating temperature T
op,max
+125 °C
Upper category temperature T
max
+125 °C
Lower category temperature T
min
55 °C
Rated temperature T
R
+85 °C
Dissipation factor tan δ (in 10
-3
) at C
R
≤ 0.1 µF 0.1 µF < C
R
≤ 1 µF C
R
> 1 µF
at 20 °C
1 kHz 8 8 10
(upper limit values) 10 kHz 15 15 
100 kHz 30  
Insulation resistance R
ins
V
R
C
R
≤ 0.33 µF C
R
> 0.33 µF
or time constant τ = C
R
 R
ins
≤ 100 V DC 3750 MΩ 1250 s
at 20 °C, rel. humidity ≤ 65% ≥ 250 V DC 7500 MΩ 2500 s
(minimum as-delivered values)
DC test voltage 1.4  V
R
, 2 s
Category voltage V
C
T
A
(°C) DC voltage derating AC voltage derating
(continuous operation with V
DC
T
A
≤ 85 V
C
= V
R
V
C,RMS
= V
RMS
or V
AC
at f ≤ 60 Hz) 85<T
A
≤125 V
C
= V
R
 (165T
A
)/80 V
C,RMS
=V
RMS
 (165T
A
)/80
Operating voltage V
op
for
T
A
(°C) DC voltage (max. hours) AC voltage (max. hours)
short operating periods T
A
≤ 100 V
op
= 1.25  V
C
(2000 h) V
op
= 1.0  V
C,RMS
(2000 h)
(V
DC
or V
AC
at f ≤ 60 Hz) 100<T
A
≤125 V
op
= 1.25  V
C
(1000 h) V
op
= 1.0  V
C,RMS
(1000 h)
Damp heat test 56 days/40 °C/93% relative humidity
Limit values after damp Capacitance change ∆C/C ≤ 5%
heat test Dissipation factor change ∆ tan δ ≤ 5  10
-3
(at 1 kHz)
Insulation resistance R
ins
≥ 50% of minimum
or time constant τ = C
R
 R
ins
as-delivered values
Reliability:
Failure rate λ 1 fit (≤ 1  10
-9
/h) at 0.5  V
R
, 40 °C
Service life t
SL
200 000 h at 1.0  V
R
, 85 °C
For conversion to other operating conditions and temperatures,
refer to chapter "Quality, 2 Reliability".
Failure criteria:
Total failure Short circuit or open circuit
Failure due to variation Capacitance change ∆C/C > 10%
of parameters Dissipation factor tan δ > 2  upper limit value
Insulation resistance R
ins
< 150 MΩ (C
R
≤ 0.33 µF)
or time constant τ = C
R
 R
ins
< 50 s (C
R
> 0.33 µF)
B32520 ... B32529
General purpose (stacked/wound)
Page 19 of 43Please read Cautions and warnings and
Important notes at the end of this document.