ASF461

www.DataSheet4U.com PD - 94589 ASF461 SERIES ADVANCED ANALOG EMI FILTER Description The ASF461 EMI filter will reduce the input line reflected ripple current of the ASA line of DC/DC converters 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 options. Refer to Part Number section. The ASF461 Filter is built using thick film hybrid technology 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 n n n n Uses less than 1.2 sq. in. of Board Space -55°C to +125°C Operation Greater than 50db Ripple Current Reduction Optimal Military Screening No Derating for -55°C to +125°C Operation Typical Application +Vin System Bus ASF461 EMI Case Filter Output Return +Vout +Vin +Vout ASA28XX Case DC/DC Input Return Output Return RL Input Return www.irf.com 1 11/21/02 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...