Film Capacitors
Metallized Polyester Film Capacitors (MKT)
Series/Type:
Date:
B32572, B32573
August 2004
© EPCOS AG 2004. Reproduction, publication and dissemination of this data sheet, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical
and Electronics Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers' Association), unless otherwise agreed.
Metallized polyester film capacitors (MKT)
B32572, B32573
Ignition (stacked) SilverCapTM
Typical applications
Ignition for
gas, engines, generators
Energy storage
Dimensional drawing
Climatic
Max. operating temperature: 125 °C
Climatic category (IEC 60068-1): 55/125/56
Features
Special dimensions available on request
High pulse strength
Dimensions in mm
Construction
Dielectric: polyethylene terephthalate
(polyester, PET)
Stacked-film technology
Uncoated
Lead spacing
±0.4
Lead diameter Type
d1
15.0
22.5
0.8
0.8
B32572
B32573
Terminals
Parallel wire leads, lead-free tinned
Marking
Rated capacitance (coded),
rated DC voltage
Delivery mode
Bulk (untaped)
Notes on mounting
When mounting these capacitors, take into account creepage distances and clearances to
adjacent live parts. The insulating strength of the cut surfaces to other live parts of the circuit is
1.5 times the capacitors rated DC voltage, but is always at least 300 VDC.
2
B32572, B32573
Ignition (stacked) SilverCapTM
Overview of available types
Lead spacing 15.0 mm
22.5 mm
Type
B32572
B32573
Page
4
5
VR (VDC)
250
250
Vrms (VAC)
160
160
CR (µF)
0.68
1.0
1.5
2.2
3
B32572
Ignition (stacked) SilverCapTM
Ordering codes and packing units (lead spacing 15 mm)
VR
Vrms
CR
f ≤60 Hz
VDC VAC
µF
0.68
250 160
1.0
1.5
2.2
Max. dimensions
w×h×l
mm
7.0 × 11.0 × 16.5
9.1 × 11.7 × 16.5
11.5 × 13.5 × 16.5
11.5 × 19.8 × 16.5
Ordering code
(composition see
below)
B32572A3684+000
B32572A3105+000
B32572A3155+000
B32572A3225+000
Untaped
pcs./unit
450
300
200
150
Further E series and intermediate capacitance values on request.
Special dimensions available on request.
For corresponding design rules, refer to chapter "General technical information".
Composition of ordering code
+ = Capacitance tolerance code:
M = ±20%
K = ±10%
J = ±5%
4
B32573
Ignition (stacked) SilverCapTM
Ordering codes and packing units (lead spacing 22.5 mm)
VR
Vrms
CR
f ≤60 Hz
VDC VAC
µF
0.68
250 160
1.0
1.5
2.2
Max. dimensions
w×h×l
mm
5.6 × 9.2 × 24.0
6.4 × 11.8 × 24.0
7.6 × 14.3 × 24.0
8.9 × 17.4 × 24.0
Ordering code
(composition see
below)
B32573A3684+000
B32573A3105+000
B32573A3155+000
B32573A3225+000
Untaped
pcs./unit
1180
1050
930
560
Further E series and intermediate capacitance values on request.
Special dimensions available on request.
For corresponding design rules, refer to chapter "General technical information".
Composition of ordering code
+ = Capacitance tolerance code:
M = ±20%
K = ±10%
J = ±5%
5
B32572, B32573
Ignition (stacked) SilverCapTM
Technical data
+125 °C
+125 °C
55 °C
+85 °C
Operating temperature range
Max. operating temperature Top,max
Upper category temperature Tmax
Lower category temperature Tmin
Rated temperature TR
Dissipation factor tan δ (in 10-3)
at 20 °C
(upper limit values)
Time constant τ = CR Rins
at 20 °C, rel. humidity ≤ 65%
(minimum as-delivered values)
DC test voltage
Category voltage VC
(continuous operation with VDC
or VAC at f ≤ 60 Hz)
Max. charging voltage Cch
at
CR ≤ 1 µF
CR > 1 µF
1 kHz
10 kHz
2500 s
8
15
10
Damp heat test
Limit values after damp
heat test
56 days1)/40 °C/93% relative humidity
Capacitance change ∆C/C
≤ 5%
Dissipation factor change ∆ tan δ
≤ 3 10-3 (at 1 kHz)
≤ 5 10-3 (at 10 kHz)
Time constant τ = CR Rins
≥ 50% of minimum
as-delivered values
Reliability:
Failure rate λ
Service life tSL
Failure criteria:
Total failure
Failure due to variation
of parameters
1.6 VR, 2 s
TA (°C)
DC voltage derating
TA ≤ 85
VC = VR
85<TA≤125 VC = VR (165TA)/80
1.2 VR for ≤ 1 s
AC voltage derating
VC,rms = Vrms
VC,rms=Vrms (165TA)/80
2 fit (≤ 2 10-9/h) at 0.5 VR, 40 °C
200 000 h at 1.0 VR, 40 °C
For conversion to other operating conditions and temperatures,
refer to chapter "Quality assurance", page .
Short circuit or open circuit
Capacitance change ∆C/C
Dissipation factor tan δ
Time constant τ = CR Rins
1) Test criteria must be met after exposure to damp heat for 21 days
6
> 10%
> 2 upper limit value
< 50 s
B32572, B32573
Ignition (stacked) SilverCapTM
Pulse handling capability
The capacitors are especially manufactured and tested to suit their intended applications.
Typical permissible loads:
Lead spacing
Max. rate of voltage rise Vpp/τ
Pulse characteristic k0
Max. charging voltage Vch
Max. voltage change Vpp
(at Vpp = 500 V)
(at Vpp ≤ 500 V)
(≤1 s)
( at f = 100 kHz)
Unlimited number of pulses permitted.
Impedance Z versus frequency f
(typical values)
7
15 and 22.5 mm
200 V/µs
200 000 V2/µs
300 VDC
500 V
B32572, B32573
Ignition (stacked) SilverCapTM
Permissible AC voltage Vrms versus frequency f (for sinusoidal waveforms, TA ≤55 °C)
For T A >55 °C, please refer to "General technical information", section 3.2.3.
Lead spacing 15 mm
250 VDV/160 VAC
Lead spacing 22.5 mm
250 VDC/160 VAC
8