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International Rectifier Electronic Components Datasheet

ASF461 Datasheet

ADVANCED ANALOG EMI FILTER

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PD - 94589
ADVANCED ANALOG
EMI FILTER
ASF461 SERIES
Description
The ASF461 EMI filter will reduce the input line re-
flected ripple current of the ASA line of DC/DC convert-
ers to levels below the CEO3 limits of MIL-STD-461.
These EMI filters are available with military screening
and built in a facility fully qualified to MIL-PRF-38534.
Four grades are offered with different screening op-
tions. Refer to Part Number section.
The ASF461 Filter is built using thick film hybrid tech-
nology and seam welded in a hermetic kovar package
for high reliability.
These units offer superior noise reduction and power
dissipation when compared with similar competitive
filters. No derating is required over the entire operating
temperature range.
ASF
Features
n Uses less than 1.2 sq. in. of Board Space
n -55°C to +125°C Operation
n Greater than 50db Ripple Current Reduction
n Optimal Military Screening
n No Derating for -55°C to +125°C Operation
Typical Application
System
Bus
+Vin
+Vout
ASF461
EMI Case
Filter
Input
Output
Return
Return
+Vin
+Vout
ASA28XX
Case DC/DC
Input
Return
Output
Return
RL
www.irf.com
1
11/21/02


International Rectifier Electronic Components Datasheet

ASF461 Datasheet

ADVANCED ANALOG EMI FILTER

No Preview Available !

ASF461 Series
Specifications
Parameter
Input Voltage
Input Current
Output Voltage
Output Current
DC Resistance (RDC)
Power Dissipation
Noise Rejection
Capacitance
Isolation
Operating Temp
Storage Temp
Weight
Condition
Steady State
Steady State
Steady State
Steady State
Steady State
Max. Current 420 mA
100 KHz
500 KHz to 10 MHz
Any pin to case
Any pin to case
500VDC
Base plate
Base plate
Min Typ Max
0 28 50
420
VOUT = VIN (IIN x RDC)
420
1.7 2.0 2.3
1.6
-40
-60
4200
100
-55 +25 +125
-65 +25 +150
39
Unit
VDC
mADC
VDC
mADC
ohms
watts
db
pf
M
°C
°C
grams
Available Screening Levels and Process Variations for ASF461 Series
Requirement
Temperature Range
Element Evaluation
Internal Visual
Temperature Cycle
Constant
Acceleration
Burn-in
Final Electrical
(Group A)
Seal, Fine & Gross
External Visual
MIL-STD-883
Method
2017
1010
2001
1015
MIL-PRF-38534
Specification
1014
2009
* Per Commercial Standards
No
Suffix
-20°C to +85°C
ES
Suffix
-55°C to +125°C
¬ Yes
Cond B
500g
HB
Suffix
-55°C to +125°C
Yes
Cond C
Cond A
CH
Suffix
-55°C to +125°C
MIL-PRF-38534
Yes
Cond C
Cond A
48hrs @ 85°C
25°C
48hrs @ 125°C
25°C
160hrs @ 125°C
-55, +25, +125°C
160hrs @ 125°C
-55, +25, +125°C
Cond C
¬
Cond A, C
Yes
Cond A, C
Yes
Cond A, C
Yes
2 www.irf.com


Part Number ASF461
Description ADVANCED ANALOG EMI FILTER
Maker International Rectifier
Total Page 4 Pages
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International Rectifier





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