ASF461 IRF | Alldatasheet
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Features
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. Typical Application ASF461 EMI Filter +Vin Input Return +Vout Output Return R L System Bus Case ASA28XX DC/DC +Vout Output Return +Vin Input Return Case PD - 94589
2 www.irf.com ASF461 Series Specifications Available Screening Levels and Process Variations for ASF461 Series * Per Commercial Standards Requirement MIL-STD-883 Method No Suffix ES Suffix HB Suffix CH Suffix Temperature Range -20°C to +85°C -55°C to +125°C -55°C to +125°C -55°C to +125°C Element Evaluation MIL-PRF-38534 Internal Visual 2017 /GAC Yes Yes Yes Temperature Cycle 1010 Cond B Cond C Cond C Constant Acceleration 2001 500g Cond A Cond A Burn-in 1015 48hrs @ 85 °C 48hrs @ 125°C 160hrs @ 125°C 160hrs @ 125°C Final Electrical (Group A) MIL-PRF-38534 Specification Seal, Fine & Gross 1014 Cond C Cond A, C Cond A, C Cond A, C External Visual 2009 /GAC Yes Yes Yes Parameter Condition Min Typ Max Unit Input Voltage Steady State 0 28 50 VDC Input Current Steady State 420 mADC Output Voltage Steady State V OUT = VIN (IIN x RDC ) VDC Output Current Steady State 420 mADC DC Resistance (RDC ) Steady State 1.7 2.0 2.3 ohms Power Dissipation Max. Current 420 mA 1.6 watts Noise Rejection 100 KHz
500 KHz to 10 MHz
-40 -60 db Capacitance Any pin to case 4200 pf Isolation Any pin to case 500VDC 100 M Ω Operating Temp Base plate -55 +25 +125 °C Storage Temp Base plate -65 +25 +150 °C Weight 39 grams
www.irf.com 3 ASF461 Series ASF461 Block Diagram Refer to last page for Pin Designation
4 www.irf.com ASF461 Series Pin Designation Part Numbering WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 322 3331 ADVANCED ANALOG: 2270 Martin Av., Santa Clara, California 95050, Tel: (408) 727-0500 Visit us at www.irf.com for sales contact information. Data and specifications subject to change without notice. 11/02 ASF 461 / CH Model Applicable Mi li tary Specification Screenin g — , ES, HB, CH Pin No. Designation
1 Input Return *
2 Input Return *
3 Input *
4 Input *
5 Output *
6 Output *
7 Case
8 Output Return *
9 Output Return *
- Make external connection to both Pins 0.8001.075 0.220 0.350 1.075 0.800 0.018 ± .002 Dia Pins 12 34 5697 8 0.600 ASF461 Case Outline