ISO 9001 CERTIFIED BY DSCC
5A
EMI FILTER
BFL2805
M.S.KENNEDY CORP.
4707 Dey Road Liverpool, N.Y. 13088
(315) 701-6751
MIL-PRF-38534 CERTIFIED
FEATURES:
Replaces APEX FDB461
All Ceramic Capacitors
Surface Mount Magnetics
-55°C to +125°C Operation
60dB Minimum Differential Mode Rejection at 500KHz
5.5 Amps Throughput Current
Meets MIL-STD-461C CEO3 Standards For BBF2800
Series DC to DC Converters
MIL-STD-704 (A Through E) Power Bus Compatibility
DESCRIPTION:
The BFL2805 is a high reliability EMI filter for use with BBF2800 series of DC-DC converters. This filter has been
designed to reduce the input line reflected ripple current to within the limit of MIL-STD-461C, CE03.
The BFL2805 hybrid EMI filter utilizes all ceramic capacitors, surface mount magnetics and ultrasonically bonded aluminum wires to provide reliable operation at all operating temperatures while surviving very high G forces. The stand-alone
filter's internal components are all passive devices and selected to operate from input voltages up to and including the peak
transient voltage. The filter therefore does not require or utilize transient supression circuitry and is compatible with the
transient specification of a MIL-STD-704 type power bus. When connected to an output device, the output device must be
able to operate from compatible voltages. The filter will attenuate spikes, but the duration and magnitude of the spike must
be within the operating range of the filter.
The 12-pin high power dip package allows connection to a heatsink, is hermetically sealed and is isolated from the
internal circuits. Heat sinking is recommended for full power operation at elevated ambient temperatures.
EQUIVALENT SCHEMATIC
PIN-OUT INFORMATION
TYPICAL APPLICATIONS
Airborne Power Systems
Aerospace Power Systems
Vehicle Electrical Systems
Ground Equipment and Test Equipment
1
2
3
4
5
6
1
+VIN
INPUT COMMON
NC
NC
NC
NC
12
11
10
9
8
7
NC
NC
NC
CASE GROUND
+VOUT
OUTPUT COMMON
Rev. B 10/05
6
ABSOLUTE MAXIMUM RATINGS
Input Voltage Range
Input Voltage Transient
Voltage (any pin to case pin 9)
Storage Temperature Range
Lead Temperature
(10 Seconds Soldering)
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0-50VDC
80V @ 50mS
500V
-65°C to +150°C
300°C
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Case Operating Temperature Range
BFL2805H/E
-55°C to +125°C
BFL2805
-40°C to+85°C
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ELECTRICAL SPECIFICATIONS
Parameter
Input Voltage 1
Input Current 1
Test Conditions
Subgroups
BFL2805H/E
Min.
Typ.
Units
BFL2805
Max. Min.
Typ.
Max.
Steady State
1,2,3
0
28
50
0
28
50
V
Transient 50µsec. MAX
1
-
-
80
-
-
80
V
DC
1
-
-
5.5
-
-
5.5
A
Steady State
-
-
V OUT=V IN-Iin(R DC )
-
-
V OUT=V IN-Iin(R DC )
-
Vdc
Ripple
1
-
-
0.3
-
-
0.3
A rms
Steady State
1
-
-
5.5
-
-
5.5
A
DC Resistance (RDC)
Steady State
1
-
0.20
0.35
-
0.20
Noise Reduction
Output Voltage 2
Output Current
1
0.35 Ohms
f=200KHz
4
40
50
-
40
50
-
dB
f=500 KHz
4
60
65
-
60
65
-
dB
f=1MHz
4
60
70
-
60
70
-
dB
f=5MHz
4
60
73
-
60
73
-
dB
-
-
4.7
µF
100
-
-
MOhm
Capacitance 1
Any Pin to Case
7
-
-
4.7
Isolation
Any Pin to Case
7
100
-
-
NOTES:
1
2
3
4
5
This parameter is guaranteed by design but need not be tested.
Typical parameters are representative of actual device performance but are for reference only.
Industrial grade and "E" suffix devices shall be tested to subgroup 1,4 and 7 unless otherwise specified.
Military grade devices ('H' suffix) shall be 100% tested to subgroups 1,2,3,4 and 7.
Subgroup 1,4,7 TA = TC = +25°C
Subgroup 2
TA = TC = +125°C
Subgroup 3
TA = TC = -55°C
6 Continuous operation at or above absolute maximum ratings may adversely effect the device performanc
and/or life cycle.
2
Rev. B 10/05
TYPICAL PERFORMANCE CURVES
BBF2803S CONVERTER WITH BFL2805
EMMISION LEVEL dB µA
EMMISION LEVEL dB µA
BBF2805S CONVERTER WITH BFL2805
FREQUENCY (MHz)
FREQUENCY (MHz)
BBF2815S CONVERTER WITH BFL2805
EMMISION LEVEL dB µA
EMMISION LEVEL dB µA
BBF2812S CONVERTER WITH BFL2805
FREQUENCY (MHz)
FREQUENCY (MHz)
TYPICAL APPLICATION
3
Rev. B 10/05
MECHANICAL SPECIFICATIONS
WEIGHT = 67 GRAMS TYPICAL
ESD Triangle Indicates Pin 1.
NOTE: ALL DIMENSIONS ARE ±.010 INCHES UNLESS OTHERWISE LABELED.
ORDERING INFORMATION
BFL2805 H
SCREENING
BLANK= INDUSTRIAL; E = EXTENDED RELIABILITY;
H= MIL-PRF-38534 CLASS H
OUTPUT CURRENT
05=5 AMP
NOMINAL INPUT VOLTAGE
GENERAL PART NUMBER
The above example is a Military grade 5 Amp EMI filter.
M.S. Kennedy Corp.
4707 Dey Road, Liverpool, New York 13088
Phone (315) 701-6751
FAX (315) 701-6752
www.mskennedy.com
The information contained herein is believed to be accurate at the time of printing. MSK reserves the right to make
changes to its products or specifications without notice, however, and assumes no liability for the use of its products.
Please visit our website for the most recent revision of this datasheet.
4
Rev. B 10/05