www.irf.com 1 emi filter hybrid / high reliability description up to 2.0 a output current attenuation > 60db @ 500 khz low profile seam welded package ceramic insulated copper core pins operation over full military temp. range no derating for -55c to +125c features amh typical connection diagram the amh series emi filter has been designed to pro vide full compliance with the input line reflected ripple current requirement specified by ce03 of mil-std- 461c over the full military temperature range while operating in conjunction with the corresponding ahf series of dc/ dc converters. these filters are offered as part of a family of high reliability conversion products providing single, dual and triple output voltages while operating from nominal +28 volt input line. other converters operating with a similar switching frequency will also benefit by use of this device. these emi filters are hermetically packaged in a seam welded enclosure utilizing axially oriented copper-core pins which minimize resistive dc losses. this package has been configured to complement the ahf package as a convenience in system installation and is fabricated with international rectifier?s rugged ceramic lead-to- package seal assuring long term hermetic seal integrity in harsh environments. designed to meet the derating requirements of military and aerospace use, these devices are manufactured in a facility fully qualified to mil-prf-38534, and are available in two screening grades. the ch grade intended for flight use is fully compliant to the requirements of mil-prf-38534 for class h. the hb grade is processed and screened to the class h requirements, but does not include element evaluation. the es grade is processed and screened to a lower grade requirement. class ch grade and class hb grade are tested to meet the complete group ?a? test specification over the full military temperature range with no derating. variations in electrical, mechanical and screen requirements can be accommodated. contact ir san jose for special requirements. amh461 series amh461/ch emi filter ahf28xx/ch (or other) dc/dc converter +vin +vin input return input return +vout +vout output return output return r l r l system bus ahf28xx/ch (or other) dc/dc converter +vout output return +vin input return pd-94587a
2 www.irf.com amh461 series specifications electrical characteristics -55c t case +125c, 0 v in +50 unless otherwise specified notes to specifications 1. operation above maximum ratings may cause permanent damage to the device. operation at maximum ratings may degrade performance and affect reliability. 2. device can tolerate 100 volt transient whose duration is 100 ms when r s 0.5 ? . 3. derate output current linearly from 100% at 125c to 0 at 135c. 4. dc resistance is the total resistance of the device and includes the sum of the input to output resistance and the return in to return out resistance paths. absolute maximum ratings note 1 input voltage -80v to +80v note 2 input current 2.0 a power dissipation 2.0 w lead soldering temperature 300c for 10 seconds case temperature operating -55c to +125c storage -65c to +135c parameter group a subgroups test conditions min nom max unit 1, 2, 3 i in 500 a 0 +40 input voltage transient note 2 -50 +50 v dc output current note 3 2.0 a dc dc resistance note 4 1 t c = 25c 150 250 m ? power dissipation maximum current t c = 25c 1.0 w noise reduction 4, 5, 6 tc = 25c 1khz 200 khz - 500 khz 500 khz - 10 mhz -1.0 40 60 +1.0 50 80 db isolation 1 any pin to case tested @ 500vdc 100 m ? capacitance 1, 2, 3 measured between any pin and case 30 44 46 nf device weight slight variations with case style 30 g
www.irf.com 3 amh461 series typical filter ce03 performance ahf2805s ce03 performance without amh461 filter ahf2805s ce03 performance with amh461 filter
4 www.irf.com amh461 series available screening levels and process variations for amh461 series amh461 block diagram 1 5 3 2 4 +input - input + output - output case requirement mil-std-883 method /ch suffix /hb suffix /es suffix temperature range -55c to +125c -55c to +125c -55c to +125c element evaluation mil-prf-38534 ? ? internal visual 2017 yes yes yes temperature cycle 1010 cond c cond c cond b constant acceleration 2001 cond a cond a 500g burn-in interim electrical @ 0 hrs 1015 160 hrs @ 125c 160 hrs @ 125c 96 hrs @ 125c final electrical (group a) read & record data mil-prf-38534 & specification -55, +25, +125c -55, +25, +125c +25c pda (25c, interim to final) 10% 10% ? seal, fine & gross 1014 cond a, c cond a, c cond a, c external visual 2009 yes yes yes
www.irf.com 5 amh461 series amh461 case style outlines tolerances, unless otherwise specified: .xx = 0.010 .xxx = 0.005 flanged package non-flanged package tolerances, unless otherwise specified: .xx = 0.010 .xxx = 0.005 1.120 0.26 0.015 0.325 1.00 0.80 1 2 3 4 5 ? 0.030 pins c 0.245 r 0.090 +0.006 -0.011 1.450 1.450 1.90 1.12 0.26 0.015 0.050 0.325 1.00 1.70 0.80 0.92 1 2 3 4 5 ? 0.104 x3 0.20 ? 0.030 pins c 0.37 +0.006 -0.011
6 www.irf.com amh461 series part numbering pin no. designation 1 positive input 2 positive output 3 case ground 4 output common 5 input common pin designation * note : refer to the chart on page 4 amh 461 f / ch model applicable military test standard screening ch, hb, es *see chart for details case style f = flange no suffix = no flange world headquarters: 233 kansas st., el segundo, california 90245, tel: (310) 252-7105 ir san jose: 2520junction avenue, san jose, california 95134, tel: (408) 434-5000 visit us at www.irf.com for sales contact information . data and specifications subject to change without notice. 05/2012
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