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| FEATURES * -55C to +125C 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 EMI INPUT FILTER 28 VOLT INPUT SURFACE MOUNT FMGA EMI FILTER 0.8 AMP MODEL FMGA-461 0.8 amp Size (max.): 1.010 x 0.880 x 0.250 inches (25.65 x 22.35 x 6.35 mm) Shown with "Gull 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. DESCRIPTION Interpoint's surface mount FMGA-461TM 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 hightemperature operation. 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. SURFACE MOUNT PACKAGE 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/K). Internal components are soldered with SN96 (melting temperature 221C) to prevent damage during reflow. Maximum reflow temperature for surface mounting the FMGA filter is 220C for a maximum of 30 seconds. SN60, 62, or 63 are the recommended types of solder. Hand soldering should not exceed 300C for 10 seconds per pin. The hermetically sealed metal cases are available in two different lead configurations. See Section B8, case B. CONNECTION AND OPERATION 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. LAYOUT REQUIREMENTS TRANSIENT DAMPING The optional damping circuit shown in Figure 2 will prevent filter overshoot caused by 80 V transients with rise times of less than 200 The case of the filter must be connected to the case of the converter through a low impedance connection to minimize EMI. B3-21 FMGA EMI FILTER 0.8 AMP ABSOLUTE MAXIMUM RATINGS Input Voltage * 0 to 40 VDC continuous * 80 V for 100 ms transient Lead Soldering Temperature (10 sec per lead) * 300C Storage Temperature Range (Case) * -65C to +150C EMI INPUT FILTERS RECOMMENDED OPERATING CONDITIONS Input Voltage Range * 16 to 40 VDC continuous Case Operating Temperature (Tc) * -55C to +125C full power Derating Input and Output Current * Derate linearly from 100% at 100C to 0.60 Amps at 125C case. Above 125C derate to 0% TYPICAL CHARACTERISTICS Capacitance * 0.045 F max, any pin to case Isolation * 100 megohm minimum at 500 V * Any pin to case, except case pin Electrical Characteristics: 25C Tc, nominal Vin, unless otherwise specified. PARAMETER INPUT VOLTAGE INPUT CURRENT DIFFERENTIAL MODE NOISE REJECTION COMMON MODE NOISE REJECTION DC RESISTANCE (RDC) OUTPUT VOLTAGE OUTPUT CURRENT INTERNAL POWER DISSIPATION CONDITIONS CONTINUOUS TRANSIENT 100 ms 500 kHz 5 MHz 2 MHz - 50 MHz TC = 25C STEADY STATE STEADY STATE (<100C CASE) MAXIMUM CURRENT -- -- MIN 0 -- -- 50 45 40 -- FMGA-461 TYP 28 -- -- -- -- -- -- VOUT = VIN - IIN (RDC) -- -- 0.80 1.37 MAX 40 80 0.80 -- -- -- 1.50 UNITS VDC V A dB dB VDC A W 0.65 Positive Input 20 6800 pF 500 V >285 H 6H 6H Positive Output x2 0.014 F / 500 V 2F 20 Input Common 6800 pF 500 V 2F x2 0.014 F / 500 V Output Common FMGA-461 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. FIGURE 1: SCHEMATIC - TYPICAL VALUES B3-22 EMI INPUT FILTERS FMGA-461 Positive Input Positive Output C Case Ground Input Common Output Common R Case Ground Input Common Output Common RL DC/DC Converter Positive Input Positive Output FMGA EMI FILTER 0.8 AMP 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. Multiple units allowed up to rated output current. RL FIGURE 2: DAMPING CIRCUIT PIN OUT 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 "No Connection" pins. 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 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. See Section B8, case B, for dimensions and "gull-wing" lead option. FIGURE 3: PIN OUT DSCC NUMBER DSCC DRAWING (5915) IN PROCESS FMGA-461 FILTER MODEL NUMBERING KEY FMGA - 461 Base Model MIL-STD-461 Reference Gull Wing Lead Option (Straight leaded filter has no designator in this position.) Screening (Standard screening has no designator in this position.) Z / ES SIMILAR PART 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, "SMD/DSCC Lists", for more information. B3-23 FMGA EMI FILTER 0.8 AMP 100 90 EMI INPUT FILTERS 90 Typical Performance Curves: 25C Tc , nominal Vin, unless otherwise specified. EMISSION LEVEL (dB A) 80 EMISSION LEVEL (dB A) 70 60 50 40 30 20 10 0 .015 CE NARROWBAND 03 LI M 80 70 60 50 40 30 20 10 0 CE 03 LI NARROWBAND M IT IT 0.1 1 FREQUENCY (MHz) 10 50 .015 0.1 1 FREQUENCY (MHz) 10 50 TWO MGA 2805S CONVERTERS AT FULL LOAD WITHOUT FILTERING TYPICAL POWER LINE SPECTRAL NOISE CURRENT TWO MGA 2805S CONVERTERS AT FULL LOAD WITH FMGA-461 POWER LINE FILTERING TYPICAL POWER LINE SPECTRAL NOISE CURRENT FIGURE 4 FIGURE 5 100 90 NARROWBAND CE 90 80 CE A) 80 A) 70 60 50 40 30 20 10 0 .015 03 EMISSION LEVEL (dB IT EMISSION LEVEL (dB LI M 70 60 50 40 30 20 10 0 03 NARROWBAND LI M IT 0.1 1 FREQUENCY (MHz) 10 50 .015 0.1 1 FREQUENCY (MHz) 10 50 TWO MGH 2805S CONVERTERS AT FULL LOAD WITHOUT FILTERING TYPICAL POWER LINE SPECTRAL NOISE CURRENT TWO MGH 2805S CONVERTERS AT FULL LOAD WITH FMGA-461 POWER LINE FILTERING TYPICAL POWER LINE SPECTRAL NOISE CURRENT FIGURE 6 FIGURE 7 10.0 MAGNITUDE OF Zo (Ohms) 3.2 1.0 0.32 0.10 2 F external capacitor on filter output 1K 10K 100K 1M FREQUENCY (Hz) 26221-001-DTS RevA DQ# 4011 FMGA-461 is a trademark of Interpoint. (c) Interpoint 1999 Typical Output Impedance (Z) With Input Shorted FIGURE 8 B3-24 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 (c) 1998 - 1999 Interpoint. All rights reserved. CASES Differently colored glass bead around pin one or dimple in header (bottom or side of case) indicates pin one. CASE B TOP VIEW CASE B FMGA EMI Filter: Screening - Standard, ES, or 883 MGH Series: Screening - Standard, ES, or 883 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) 0.200 ( 5.08) 0.100 ( 2.54) 0.000 0.000 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 CASE B TOP VIEW See Figure 6 for pin configurations. 1.010 max (25.65) (This view shows straight leads.) 0.015 (0.38) 0.880 max (22.35) Cover marking is oriented with pin one at the upper right corner. 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 CAUTION Maximum reflow temperature is 220C 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 300C for 10 seconds per pin. 0.010 (0.25) 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 1.870 ref. (47.50) 0.08 (2.0) 0.250 max. (6.35) 0.50 (12.7) Straight Leads Seam seal 1.140 ref. (28.96) 0.135 ref. (3.43) 1 0.010 (0.25) 1 Gull wing leads are solder dipped. Lead dimensions are prior to solder dip. 0.010 (0.25) Bottom of case to bottom of lead Gull Wing Leads Option 0.055 (1.40) FIGURE 5: CASE B MAXIMUM DIMENSIONS 0.070 (1.78) 0.08 (2.0) FIGURE 6: CASE B 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 220C 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. 0.075 (1.91) 0.060 (1.52) 0.870 (22.10) 0.030 (0.76) 1.000 (25.40) 0.100 (2.54) 16X 0.100 (2.54) 4X FIGURE 7: CASE B SOLDER MASK Note: Although every effort has been made to render the case drawings at actual size, variations in the printing process may cause some distortion. Please refer to the numerical dimensions for accuracy. B8-7 QA SCREENING 125C PRODUCTS 125C PRODUCTS TEST (125C Products) PRE-CAP INSPECTION Method 2017, 2032 TEMPERATURE CYCLE (10 times) Method 1010, Cond. C, -65C to 150C Method 1010, Cond. B, -55C to 125C CONSTANT ACCELERATION Method 2001, 3000 g Method 2001, 500 g BURN-IN Method 1015, 160 hours at 125C 96 hours at 125C case (typical) FINAL ELECTRICAL TEST MIL-PRF-38534, Group A Subgroups 1 through 6: -55C, +25C, +125C Subgroups 1 and 4: +25C case HERMETICITY TESTING Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Gross Leak, Dip (1 x 10-3) FINAL VISUAL INSPECTION Method 2009 STANDARD /ES /883 (Class H)* yes yes yes no no no yes yes no no no no yes yes no no no no yes yes no no yes no yes yes no no no yes yes yes no yes yes no 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 -55C to +125C. Applies to the following products MOR Series MHD Series MFLHP Series MHV Series MFL Series MHF+ Series MHP Series MHF Series** MTR Series MGA Series MQO 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 **MFLHP Series, MQO Series, MHF Series, FMD EMI Filters, Hum Modules, and LCM Modules do not offer `883" screening. C2-10 |
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