b3-21 description interpoint s surface mount fmga-461 emi filter has been designed to work with interpoint s surface mount mga and mgh series dc/dc converters. multiple mga or mgh series converters can be operated from a single fmga filter provided the total power line current does not exceed the filter s maximum rating. the fmga filter will reduce the converter s power line reflected ripple current to within the limit of mil-std-461c, method ce03 as shown in figures 4 through 7. the filter uses only ceramic capacitors for reliable high- temperature operation. c onnection and o peration where more than one pin has the same designation (e.g. pins 7, 8, and 9 are positive output), all of those pins must be connected for output performance to meet the specifications. the mga series has an internal 2 f capacitor its input terminals and the mgh series has an internal 0.47 f capacitor across its input power terminals. when the mga or mgh converters are used with the fmga filter, this capacitor becomes part of the filter and forms its final lc output section. when 2 or 3 mga or mgh converters are used with a single filter, this capacitor becomes larger, improving the rejection versus frequency. t ransient d amping the optional damping circuit shown in figure 2 will prevent filter overshoot caused by 80 v transients with rise times of less than 200 microseconds. the damping circuit can be used with a 1.50 resistor in series with the filter s positive input where the additional line loss can be tolerated. for transients with rise times of greater than 200 microseconds, there is no overshoot and the damping circuit is not required. s urface m ount p ackage the fmga emi filter can be surface mounted with pick-and-place equipment or manually. it is recommended that the case be attached with flexible epoxy adhesive or silicone which is thermally conductive (>1 watt /meter/?). internal components are soldered with sn96 (melting temperature 221?) to prevent damage during reflow. maximum reflow tempera- ture for surface mounting the fmga filter is 220? for a maximum of 30 seconds. sn60, 62, or 63 are the recommended types of solder. hand soldering should not exceed 300? for 10 seconds per pin. the hermetically sealed metal cases are available in two different lead configurations. see section b8, case b. l ayout r equirements the case of the filter must be connected to the case of the converter through a low impedance connection to minimize emi. emi i nput f ilter 28 v olt i nput s urface mount fmga emi filter 0.8 amp f eatures ?5? to +125? operation 50 db min. attenuation at 500 khz differential mode 45 db min. attenuation at 5mhz common mode compliant to mil-std-461c, ce03 compatible with mil-std-704a through e size (max.): 1.010 x 0.880 x 0.250 inches (25.65 x 22.35 x 6.35 mm) shown with ?ull wing?lead option, also available with straight leads. see section b8, case b, for dimensions and options. weight: 10.3 grams typical, 11.5 grams maximum screening: standard or es. see section c2 for screening options, see section a5 for ordering information. model fmga-461 0.8 amp
recommended operating conditions typical characteristics absolute maximum ratings input voltage 0 to 40 vdc continuous 80 v for 100 ms transient lead soldering temperature (10 sec per lead) 300? storage temperature range (case) ?5? to +150? b3-22 fmga emi filter 0.8 amp input voltage range 16 to 40 vdc continuous case operating temperature (tc) ?5? to +125? full power derating input and output current derate linearly from 100% at 100? to 0.60 amps at 125? case. above 125? derate to 0% electrical characteristics: 25? tc, nominal vin, unless otherwise specified. emi i nput f ilters capacitance 0.045 f max, any pin to case isolation 100 megohm minimum at 500 v any pin to case, except case pin fmga-461 parameter conditions min typ max units input voltage continuous 0 28 40 vdc transient 100 ms 80 v input current 0.80 a differential mode 500 khz 50 db noise rejection 5 mhz 45 common mode noise rejection 2 mhz - 50 mhz 40 db dc resistance (r dc ) tc = 25? 1.50 output voltage steady state v out = v in - i in (r dc ) vdc output current steady state (<100? case) 0.80 a internal power dissipation maximum current 1.37 w 2 m f 6800 pf 500 v 6800 pf 500 v positive input input common positive output output common fmga-461 >285 m h 6 m h 2 m f 0.014 m f / 500 v 0.014 m f / 500 v 20 v 20 v 0.65 v 6 m h x 2 x 2 f igure 1: s chematic ?t ypical v alues the case ground connection between the filter and the converter should be as low an impedance as possible to minimize emi. direct contact of baseplate to chassis ground provides the lowest impedance.
model numbering key pin out top view fmga differently colored glass bead around pin one or dimple in header (bottom of case) indicates pin one. cover marking is oriented with pin one at the upper right corner. 1 2 3 4 5 6 8 9 7 18 17 16 15 14 13 12 11 10 fmga - 461 z / es base model mil-std-461 reference screening (standard screening has no designator in this position.) gull wing lead option (straight leaded filter has no designator in this position.) b3-23 emi i nput f ilters see section b8, case b, for dimensions and ?ull-wing?lead option. f igure 3: p in o ut dscc number dscc d rawing (5915) in process fmga -461 f ilter s imilar p art fmga-461/883 for exact specifications for a dscc product, refer to the dscc drawing. call you interpoint representative for status on the fmga dscc models.see section a3, ?md/dscc lists? for more information. fmga emi filter 0.8 amp pin description 1, 2 positive input 3, 4 no connection 5, 6 case ground 7, 8, 9 positive output 10, 11, 12 output common 13, 14 case ground 15, 16 no connection 17, 18 input common to meet specified performance, all pins must be connected except ?o connection?pins. r l positive output fmga-461 positive input input common case ground output common c r dc/dc converter input common case ground output common r l multiple units allowed up to rated output current. the rc output is an optional damping circuit. it is recommended in applications where 80 volt line transients may occur with rise times <200 s. see text page one "connection and operation." c = 10 f, 100v c = sprague 109d106x9100c2 r = 2.2 , 5%, 1/4 w, carbon comp. positive input positive output f igure 2: d amping c ircuit
b3-24 26221-001-dts reva dq# 4011 fmga-461 is a trademark of interpoint. interpoint 1999 typical performance curves: 25? tc , nominal vin, unless otherwise specified. emi i nput f ilters fmga emi filter 0.8 amp frequency (mhz) two mga 2805s converters at full load without filtering typical power line spectral noise current emission level (db a) 0.1 1 10 50 90 80 70 60 50 40 30 20 10 0 .015 100 narrowband ce03 limit f igure 4 frequency (mhz) two mga 2805s converters at full load with fmga-461 power line filtering typical power line spectral noise current emission level (db a) 0.1 1 10 50 90 80 70 60 50 40 30 20 10 0 .015 ce03 limit narrowband f igure 5 frequency (mhz) two mgh 2805s converters at full load without filtering typical power line spectral noise current emission level (db a) 0.1 1 10 50 90 80 70 60 50 40 30 20 10 0 .015 100 ce03 limit narrowband f igure 6 frequency (mhz) two mgh 2805s converters at full load with fmga-461 power line filtering typical power line spectral noise current emission level (db a) 0.1 1 10 50 90 80 70 60 50 40 30 20 10 0 .015 narrowband ce03 limit f igure 7 f igure 8 frequency (hz) magnitude of z o (ohms) 10k 100k 1m 10.0 3.2 1.0 0.32 0.10 1k 2 f external capacitor on filter output typical output impedance (z) with input shorted 26221-001-dts rev a dq# 4011 all technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. interpoint reserves the right to make changes in products or specifications without notice. fmga-461 is a trademark of interpoint. copyright 1998 - 1999 interpoint. all rights reserved.
1.000 (25.40) 0.870 (22.10) 0.060 (1.52) 0.075 (1.91) 0.030 (0.76) 0.100 (2.54) 4x 0.100 (2.54) 16x b8-7 case b c ases case b top view see figure 6 for pin configurations. 0.880 max (22.35) materials header kovar/nickel/gold cover kovar/nickel pins kovar/nickel/gold, matched glass seal case dimensions in inches (mm) tolerance 0.005 (0.13) for three decimal places 0.01 (0.3) for two decimal places unless otherwise specified cover marking is oriented with pin one at the upper right corner. 1.010 max (25.65) caution maximum reflow temperature is 220 c for a maximum of 30 seconds. sn60, sn62, or sn63 are the recommended types of solder. see below for solder mask instructions. hand soldering should not exceed 300 c for 10 seconds per pin. differently colored glass bead around pin one or dimple in header (bottom or side of case) indicates pin one. (this view shows straight leads.) gull wing leads option 0.135 ref. (3.43) gull wing leads are solder dipped. lead dimensions are prior to solder dip. 0.08 (2.0) 0.010 (0.25) bottom of case to bottom of lead 0.055 (1.40) 0.070 (1.78) 0.08 (2.0) 1.140 ref. (28.96) 1 1 fmga emi filter: screening ?standard, es, or 883 mgh series: screening ?standard, es, or 883 top view case b 0.010 (0.25) 1.870 ref. (47.50) 0.015 (0.38) 0.010 (0.25) 0.900 (22.86) 0.800 (20.32) 0.700 (17.78) 0.600 (15.24) 0.500 (12.70) 0.400 (10.16) 0.300 ( 7.62) differently colored glass bead around pin one or dimple in header (bottom or side of case) indicates pin one. cover marking is oriented with pin one at the upper right corn 1 2 3 4 5 6 8 9 7 18 17 16 15 14 13 12 11 10 0.000 0.000 straight leads 0.50 (12.7) 0.250 max. (6.35) 0.200 ( 5.08) 0.100 ( 2.54) seam seal solder mask notes 1. pad dimensions are for the solder mask opening. lead common to each other can be connected underneath as desired. 2. ground pins should be connected to the center pad for improved grounding. 3. center pad should not have a solder mask. solder, copper, or au/ni plate are preferred over solder for adhesive attach. 4. solder coat to solder down converter. 5. if less rotation of case is desired, make the pad width 0.020inches (0.51 mm). pad length can be extended 0.010 inches (0.25 mm) towards the case body and as-desired dimension away from the case body. 6. do not exceed 220? as measured on the body of the converter (top or bottom). 7. attach the body of the case to the board with a thermally conductive adhesive or sn60, 62, or 63 solder. the adhesive can be electrically conductive as well. it can be applied as an underfill post solder or dispensed and cured prior or during solder. note: although every effort has been made to render the case drawings at actual size, variations in the printing process may ca use some distortion. please refer to the numerical dimensions for accuracy. f igure 6: c ase b f igure 7: c ase b s older m ask f igure 5: c ase b m aximum d imensions
c2-10 test (125? products) standard /es /883 (class h)* pre-cap inspection method 2017, 2032 yes yes yes temperature cycle (10 times) method 1010, cond. c, -65? to 150? no no yes method 1010, cond. b, -55? to 125? no yes no constant acceleration method 2001, 3000 g no no yes method 2001, 500 g no yes no burn-in method 1015, 160 hours at 125? no no yes 96 hours at 125? case (typical) no yes no final electrical test mil-prf-38534, group a subgroups 1 through 6: -55?, +25?, +125? no no yes subgroups 1 and 4: +25? case yes yes no hermeticity testing fine leak, method 1014, cond. a no yes yes gross leak, method 1014, cond. c no yes yes gross leak, dip (1 x 10 -3 ) yes no no final visual inspection method 2009 yes yes yes test methods are referenced to mil-std-883 as determined by mil-prf-38534. *883 products are built with element evaluated components and are 100% tested and guaranteed over the full military temperature range of ?5? to +125?. mor series mflhp series mfl series mhp series mtr series mqo series** mhd series mhv series mhf+ series mhf series** mga series msa series mgh series mch series fm-704a emi filter fmd**/fme emi filter fmc emi filter fmh emi filter fmga emi filter fmsa emi filter hum modules** lcm modules** lim modules qa screening 125? products 125? p roducts applies to the following products **mflhp series, mqo series, mhf series, fmd emi filters, hum modules, and lcm modules do not offer ?83?screening.
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