CAT 9 Revis i on A
IGBT Snubber
Capacitors
for Power
Electronics
The Ultimate
In Reliability
! Low Inductance to 12 nano
Henries
! High DV / DT
! Low ESR
! Low Loss Polypropylene
Dielectric
! UL 94 V-0 Flame Retardant
Case and Resin
! Wide Selection of Terminal
Configurations
167 John Vertente Boulevard, New Bedford, MA 02745 USA
Tel: (508) 994-9661 Fax: (508) 995-3000
E-Mail: sales@aerovox.com Web Site: www.aerovox.com
1 Standard ratings shown, o t her ra tings available consult fa ctor y
Why Use Snubber Capacitors?
With the evolution of power technology, new
higher speed Insulated Gate Bipolar
Transistors (IGBTs) make it possible for high
power converters to operate up to 10 kHz or
more. IGBTs are replacing the slower
Darlington transistors, simplifying circuit design
and reducing cost. IGBT power modules are
now being designed into AC and DC motor
drive inverters, uninterruptible power systems,
electric vehicles and alternate energy
production systems.
Power systems containing IGBTs must be
designed so the transient voltages caused by
the hi di/dt that occurs at gate turn off is
minimized. Left uncontrolled, this transient
voltage can exceed the blocking voltage rating
of the IGBT and cause it to fail. To reduce the
transient voltage, either di/dt or the parasitic DC
bus inductance of the power circuit must be
reduced. This is best achieved by decoupling
the parasitic bus inductance using a non-
inductive wound film capac itor m ounted as near
as possible to the IGBT module terminals.
Snubber capacitors, constructed of
polypropylene film dielectric and dual
metallized film electrodes, are the optimal
capacitor design for IGBT applications. While
film/foil capacitors are often used because of
their superior current carrying capability, they
fail in a short circuit mode, which may cause
damage to the IGBT module. Aerovox’s
snubber capacitors combine high current
carrying capability with low inductance, low
dielectric losses and capacitance stability
across a wide frequency range. They offer the
self-healing property of metallized film (not
failing in a short circuit mode) with the high
peak current carrying capability (dv/dt) of
film/foil construction.
Aerovox’s snubber capacitors, manufactured
with polypropylene fim and dual metallized
electrodes, available with direct IGBT module
terminals, radial wire leads, or a unique printed
circuit board dual in-line pin mount, provide the
highest electrical performance of any snubber
capacitors currently available.
General Description
Dielectric: Polypropylene film with self-healing
dual metallized electrodes.
Enclosure: UL 94V-0 flam e-retardant plastic case
and resin.
Marking: Ink stamped with Aerovox, part
number, capacitance value, nominal DC voltage,
and date code, at a minimum.
Terminals: Tinned copper, terminal sizes and
styles are specified in outline drawings on page 4.
Electrical Characteristics
Capacitance: Values from 0.1 uf to 3 uf are
available at ±10% tolerance measured at 1kHz,
25°C.
Voltage: Available at 630, 1000, 1250, and 1600
VDC as standard ratings.
Temperature: -40°C to +85°C. From 85° to
105°C derate DC voltage 1% / °C, AC voltage
1.5% / °C.
Dissipation Factor: <0.1% at 1 kHz, 25°C
Insulation Resistance: >100,000 megohms x f
at 100 VDC measured after 2 minutes.
Equivalent Series Resistance (ESR): Refer to
RBPS tables.
Dielectric Strength: Capacitors will withstand 1.6
x rated voltage for a period of 60 seconds.
Capacitance Change with Temperature: (-250
ppm ±100 ppm) / °C.
Equivalent Series Induct ance (ESL): This value
is determined by the terminal option selected and
is measured at the resonant frequency refer to
Table below.
Equivalent Series Inductance (ESL)
Terminal Description Terminal
Style
Maximum
Inductance
nonoHenries
Radial Lead 2L 30
Circuit Mounted, 2 pins per side 2P 15
Circuit Mounted, 3 pins per side 3P 15
Circuit Mounted, 4 pins per side 4P 15
Direct Mounted, 22 to 31 mm
Centers B1 20
Direct Mounted, 39 to 48 mm
Centers B2 20
167 John Vertente Boulevard, New Bedford, MA 02745 USA
Tel: (508) 994-9661 Fax: (508) 995-3000
E-Mail: sales@aerovox.com Web Site: www.aerovox.com
2 Standard ratings shown, o t her ra tings available consult fa ctor y
Ripple Current: The Maximum Rms current
is the maximum current flowing through the
capacitor at an ambient temperature of 55°C.
This value changes with tem perature as shown
in the following diagram.
Test Specifications
Accelerated Life:
Test Conditions DC
Temperature 85°C ±5.0°C
Applied Voltage 1.25 x rated VDC
Test Duration 1,000 hours
Performance Requirements:
Capacitance Delta of <5.0%
ESR < 125% of initial limit
Insulation Resistance >50% of initial limit
Humidity:
Test Conditions
Temperature 40°C ±3.0°C
Applied Voltage Zero Voltage
Humidity 93% ±5% RH
Test Duration 500 hours
Performance Requirements:
Capacitance Delta of < 3.0%
Insulation Resistance 10% of initial limit
ESR <125% of initial limit
Resistance to Solder Heat:
Test Conditions
Solder Temperature 260°C ±5.0°C
Test Duration 10 seconds ±1 s
Performance Requirements:
Capacitance Delta of < 2.0%
Accelerated Pulse Handling Capability:
Test Conditions
A capacitor under test will be charged through
an impedance of a magnitude greater than the
discharging impedance. The capacitor under test will
be charged to the rated DC voltage and discharged
through an impedance capable of producing a
minim um voltage gradient with time (DV/DT). The test
will be performed in accordance with the requirements
for the voltage gradient multiplier and charge and
discharge cycles as listed below.
Voltage Gradient Multiplier Test Cycles
6x 100
4x 1000
2x 1 million
Example: An RBPS part rated 1.0 uF 1,000 VDC has
a DV/DT r ating of 600 volts per micr osec ond. This part
would be capable of withstanding 100 cycles at a
minimum of 3,600 volts/microsecond, 1000 cycles at
2,400 volts/microsecond, or 1 million cycles at 1,200
volts/microsecond.
Performance Criteria After Testing
Capacitance Delta < 3%
ESR Absolute value < 150% of
original measured value
Part Numbering System Configuration
167 John Vertente Boulevard, New Bedford, MA 02745 USA
Tel: (508) 994-9661 Fax: (508) 995-3000
E-Mail: sales@aerovox.com Web Site: www.aerovox.com
3 Standard ratings shown, o t her ra tings available consult fa ctor y
Type RBPS
Voltage Code 63 - Rated 630 VDC (400 VAC @ 60 Hz)
Capacitance
(µf) Code
Case
Code DV/DT
V/µ sec Ipeak
Amps
Irms
Max Amps
@55°C
ESR Max
@100kHz
mOhms
Terminal
Codes
0.33 334 C7 600 200 10.9 9 B, G, I, J
0.39 394 C7 600 235 11.5 9 B, G, I, J
0.47 474 C7 550 235 12.2 8 B, G, I, J
0.56 564 C7 500 280 13.0 8 B, G, I, J
0.68 684 C7 450 300 14.0 8 B, G, I, J
0.75 754 C7 400 300 15.0 8 B, G, I, J
0.82 824 B7 400 330 16.0 8 B, G, I, J
1.00 105 B7 400 400 18.0 7 B, G, I, J
1.20 125 A7 400 480 19.0 7 C, G, I, J
1.50 155 A7 400 600 12.0 7 C, G, I, J
1.75 175 A7 400 700 21.0 7 C, G, I, J
2.00 205 A7 400 800 22.0 7 C, G, I, J
2.20 225 R4 280 615 24.0 7 C, G, H
2.50 255 R4 250 625 26.0 7 C, G, H
3.00 305 R4 250 750 28.0 7 C, G, H
4.0 405 R5 250 1000 30.0 6 D, G, H
5.00 505 R5 250 1250 35.0 6 D, G, H
Type RBPS
Voltage Code 91 - Rated 1000 VDC (530 VAC @ 60 Hz)
Capacitance
(µf) Code
Case
Code DV/DT
V/µ sec Ipeak
Amps
Irms
Max Amps
@55°C
ESR Max
@100kHz
mOhms
Terminal
Codes
0.22 224 W0 1000 220 6.6 12 A
0.27 274 C7 700 245 10.0 12 B, G
0.33 334 C7 700 300 10.9 10 B, G
0.39 394 C7 700 310 11.5 9 B, G
0.47 474 C7 700 375 12.2 8 B, G
0.56 564 B7 700 450 14.0 8 B, G
0.68 684 B7 700 450 15.0 8 C, G
0.75 754 B7 700 525 15.0 8 C, G
0.82 824 A7 600 490 17.2 8 C, G
1.00 105 A7 600 600 18.4 7 C, G
1.20 125 A4 500 600 18.5 7 C, G
1.50 155 R4 500 750 21.7 7 C, G, H
1.75 175 R4 500 875 22.0 7 C, G, H
2.00 205 R4 450 900 22.5 7 C, G, H
2.20 225 R5 450 990 26.0 7 D, G, H
2.50 255 R5 400 1000 27.0 7 D, G, H
3.00 305 R5 400 1200 30.0 6 D, G, H
167 John Vertente Boulevard, New Bedford, MA 02745 USA
Tel: (508) 994-9661 Fax: (508) 995-3000
E-Mail: sales@aerovox.com Web Site: www.aerovox.com
4 Standard ratings shown, o t her ra tings available consult fa ctor y
Type RBPS
Voltage Code 92 - Rated 1250 VDC (550 VAC @ 60 Hz)
Capacitance
(µf) Code
Case
Code DV/DT
V/µ sec Ipeak
Amps
Irms
Max Amps
@55°C
ESR Max
@100kHz
mOhms
Terminal
Codes
0.10 104 W0 1200 120 5.7 16 2L
0.15 154 C7 1000 150 8.9 15 B, G, I, J
0.22 224 C7 1000 220 10.0 12 B, G, I, J
0.27 274 C7 900 245 11.0 12 B, G, I, J
0.33 334 C7 800 265 12.0 10 B, G, I, J
0.39 394 B7 770 300 14.0 9 B, G, I, J
0.47 474 B7 650 305 17.0 8 B, G, I, J
0.56 564 A7 650 365 17.5 8 C, G, I, J
0.68 684 A7 650 440 20.0 8 C, G, I, J
0.75 754 A7 650 490 20.0 8 C, G, I, J
0.82 824 A7 650 530 21.0 8 C, G, I, J
1.00 105 A7 650 650 22.0 7 C, G, I, J
1.20 125 R4 550 660 25.0 7 C, G, H
1.50 155 R4 500 750 26.0 7 C, G, H
1.75 175 R5 500 875 27.0 7 D, G, H
2.00 205 R5 475 950 28.0 7 D, G, H
2.20 225 R5 475 1045 30.0 6 D, G, H
Type RBPS
Voltage Code 96 - Rated 1600 VDC (630 VAC @ 60 Hz)
Capacitance
(µf) Code
Case
Code DV/DT
V/µ sec Ipeak
Amps
Irms
Max Amps
@55°C
ESR Max
@100kHz
mOhms
Terminal
Codes
0.10 104 W0 1200 120 5.7 16 A
0.15 154 C7 1000 150 8.9 15 B, G
0.22 224 C7 1000 220 10.0 12 B, G
0.27 274 B7 850 230 12.0 12 B, G
0.33 334 B7 850 280 13.4 10 B, G
0.39 394 A7 850 330 16.0 9 C, G
0.47 474 A7 850 400 17.2 8 C, G
0.56 564 A7 850 475 17.5 8 C, G
0.68 684 R4 700 475 20.0 8 C, G, H
0.75 754 R4 600 450 20.5 8 C, G, H
0.82 824 R4 600 490 21.0 8 C, G, H
1.00 105 R4 600 600 21.7 7 C, G, H
1.20 125 R4 600 720 26.0 7 D, G, H
1.50 155 R5 600 900 28.0 7 D, G, H
167 John Vertente Boulevard, New Bedford, MA 02745 USA
Tel: (508) 994-9661 Fax: (508) 995-3000
E-Mail: sales@aerovox.com Web Site: www.aerovox.com
5 Standard ratings shown, o t her ra tings available consult fa ctor y
Case Codes and Dimensions
Case Code T H L P
Case Code T H L P
W0 13.0 22.0 32.1 27.5 A7 28.2 37.3 42.7 35.0
C7 17.0 28.0 42.7 35.0 R4 29.2 41.2 58.5 52.0
B7 22.1 30.1 42.7 35.0 R5 46.0 36.0 58.7 52.0
Dimensions are in mm
