hi?rel design ?replaces apex fdb461 ?welded hermetic package ?all ceramic capacitors ?surface mount magnetics features ??55o to +125oc operation ?50db minimum differential mode rejection at 500 khz ?5.5 amps throughput current ?meets mil-std-461c ceo3 standards for msk bbf2800 series dc-dc converters ?mil-std-704a through e power bus compatibility description the BFL2805 is a high reliability emi filter for use with msk 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. BFL2805 hybrid emi filters utilize all ceramic capacitors, surface mount magnetics and ultrasonically bonded alumi- num wires to provide reliable operation at all operating tem- peratures while surviving very high g forces. the 12-pin high profile dip package allows connection to a heatsink and is hermetically sealed and isolated from the internal circuits. heat sinking is recommended for full power operation at elevated ambient temperatures. equivalent schematic external connections typical application 4707 dey road liverpool, n.y. 13088 m.s.kennedy corp. (315) 701-6751 BFL2805 iso-9001 certified by dscc 5a emi filter rev. - 3/01 1 1 2 3 4 5 6 +vin input common n/c n/c n/c n/c 12 11 10 9 8 7 n/c n/c n/c case ground +vout output common
parameter test conditions min typ max units input voltage steady state 0 28 40 v input voltage transient 50 sec. max 50 v input current dc 5.5 a output voltage steady state v out = v in -iin(rdc) vdc output current ripple 0.3 a rms output current steady state 5.5 a dc resistance (rdc) t = 25oc 0.20 0.35 ohms noise reduction 200 khz 35 40 db noise reduction 500 khz 50 60 db capacitance any pin to case 4.7 f isolation any pin to case, 500 vdc 100 mohm operating temperature range case baseplate C55 +125 c storage temperature range case baseplate C65 +150 c absolute maximum ratings specifications BFL2805 absolute maximum ratings input voltage range 0-50vdc input voltage transient 50v @ 50s temperature range, storage C65 to 150c. operating temperature, case C55 to 125c. notes: 1. tcase= 25c unless otherwise specified. 2. longterm operation at the maximum temperature will result in reduced product life. derate internal power dissipation to achie ve high mttf. specifications typical performance graphs bbf2803s converter with BFL2805 filter bbf2805s converter with BFL2805 filter bbf2812s converter with BFL2805 filter bbf2815s converter with BFL2805 filter rev. - 3/01 2
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. m.s. kennedy corp. 4707 dey road, liverpool, new york 13088 phone (315) 701-6751 fax (315) 701-6752 www.mskennedy.com note: all dimensions are 0.010 inches unless otherwise labeled. esd triangle indicates pin 1. BFL2805 the above example is an industrial grade 5 amp emi filter ordering information screening blank= industrial; e= extended reliability; h= class h; k= class k output current 05=5 amp nominal input voltage general part number rev. - 3/01 3 mechanical specifications
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