FEATURES • –55°C to +125°C 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-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 hightemperature operation. 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 µF capacitor its input terminals and the MGH Series has an internal 0.47 µF 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. microseconds. The damping circuit can be used with a 1.50 Ω 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 221°C) to prevent damage during reflow. Maximum reflow temperature for surface mounting the FMGA filter is 220°C for a maximum of 30 seconds. SN60, 62, or 63 are the recommended types of solder. Hand soldering should not exceed 300°C for 10 seconds per pin. The hermetically sealed metal cases are available in two different lead configurations. See Section B8, case B. 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 EMI INPUT FILTERS FMGA EMI FILTER 0.8 AMP ABSOLUTE MAXIMUM RATINGS RECOMMENDED OPERATING CONDITIONS Input Voltage • 0 to 40 VDC continuous • 80 V for 100 ms transient Lead Soldering Temperature (10 sec per lead) • 300°C Storage Temperature Range (Case) • –65°C to +150°C Input Voltage Range • 16 to 40 VDC continuous Case Operating Temperature (Tc) • –55°C to +125°C full power Derating Input and Output Current • Derate linearly from 100% at 100°C to 0.60 Amps at 125°C case. Above 125°C derate to 0% TYPICAL CHARACTERISTICS Capacitance • 0.045 µF max, any pin to case Isolation • 100 megohm minimum at 500 V • Any pin to case, except case pin Electrical Characteristics: 25°C Tc, nominal Vin, unless otherwise specified. PARAMETER INPUT VOLTAGE FMGA-461 TYP 28 — — — — MAX 40 80 0.80 — — UNITS VDC V A 500 kHz 5 MHz MIN 0 — — 50 45 2 MHz - 50 MHz TC = 25°C 40 — — — — 1.50 dB Ω CONDITIONS CONTINUOUS TRANSIENT 100 ms INPUT CURRENT DIFFERENTIAL MODE NOISE REJECTION COMMON MODE NOISE REJECTION DC RESISTANCE (RDC) OUTPUT VOLTAGE VOUT = VIN - IIN (RDC) STEADY STATE VDC OUTPUT CURRENT STEADY STATE (<100°C CASE) — — 0.80 A INTERNAL POWER DISSIPATION MAXIMUM CURRENT — — 1.37 W 0.65 V Positive Input 20 V >285 mH 6 mH 6 mH 6800 pF 500 V 2 mF 2 mF 20 V Input Common x2 0.014 mF / 500 V 6800 pF 500 V 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 Positive Output x2 0.014 mF / 500 V FMGA-461 B3-22 dB Output Common FMGA EMI FILTER 0.8 AMP EMI INPUT FILTERS FMGA-461 Positive Input DC/DC Converter Positive Output Positive Input Positive Output C Case Ground Input Common Case Ground R Output Common Input Common 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. RL Output Common 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 TOP VIEW FMGA 18 17 16 15 14 13 12 11 10 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 MODEL NUMBERING KEY FMGA-461 FILTER 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. FMGA - 461 Z / ES 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.) B3-23 FMGA EMI FILTER 0.8 AMP EMI INPUT FILTERS Typical Performance Curves: 25°C Tc , nominal Vin, unless otherwise specified. 100 90 90 03 70 LI 80 EMISSION LEVEL (dB A) EMISSION LEVEL (dB A) NARROWBAND CE 80 M IT 60 50 40 30 20 CE 03 70 NARROWBAND LI M IT 60 50 40 30 20 10 10 0 0 .015 0.1 1 FREQUENCY (MHz) .015 50 10 0.1 1 FREQUENCY (MHz) TWO MGA 2805S CONVERTERS AT FULL LOAD WITH FMGA-461 POWER LINE FILTERING TYPICAL POWER LINE SPECTRAL NOISE CURRENT TWO MGA 2805S CONVERTERS AT FULL LOAD WITHOUT FILTERING TYPICAL POWER LINE SPECTRAL NOISE CURRENT FIGURE 5 FIGURE 4 100 NARROWBAND 90 90 70 A) 03 LI M EMISSION LEVEL (dB A) EMISSION LEVEL (dB 80 CE 80 IT 60 50 40 30 20 CE 03 70 NARROWBAND LI M 60 IT 50 40 30 20 10 10 0 0 .015 0.1 1 FREQUENCY (MHz) .015 50 10 FIGURE 6 1 FREQUENCY (MHz) FIGURE 7 MAGNITUDE OF Zo (Ohms) 10.0 3.2 1.0 0.32 0.10 1K 2 F external capacitor on filter output 10K 100K FREQUENCY (Hz) 26221-001-DTS RevA DQ# 4011 FMGA-461 is a trademark of Interpoint. © Interpoint 1999 0.1 10 TWO MGH 2805S CONVERTERS AT FULL LOAD WITH FMGA-461 POWER LINE FILTERING TYPICAL POWER LINE SPECTRAL NOISE CURRENT TWO MGH 2805S CONVERTERS AT FULL LOAD WITHOUT FILTERING TYPICAL POWER LINE SPECTRAL NOISE CURRENT B3-24 50 10 Typical Output Impedance (Z) With Input Shorted FIGURE 8 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. 1M 50 CASES Differently colored glass bead around pin one or dimple in header (bottom or side of case) indicates pin one. CASE B TOP VIEW See Figure 6 for pin configurations. 1.010 max (25.65) CASE B TOP VIEW CASE B FMGA EMI Filter: Screening – Standard, ES, or 883 MGH Series: Screening – Standard, ES, or 883 1 2 3 4 5 6 7 8 9 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) 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 220°C for a maximum of 30 seconds. SN60, SN62, or SN63 are the recommended types of solder. See below for Solder Mask instructions. (This view shows straight leads.) 0.000 0.000 0.880 max (22.35) Cover marking is oriented with pin one at the upper right corner. 18 17 16 15 14 13 12 11 10 0.015 (0.38) 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 0.010 (0.25) 1.870 ref. (47.50) 0.08 (2.0) 0.250 max. (6.35) Straight Leads 0.50 (12.7) Seam seal 1.140 ref. (28.96) 0.135 ref. (3.43) 1 0.010 (0.25) Gull Wing Leads Option 1 Gull wing leads are solder dipped. Lead dimensions are prior to solder dip. Hand soldering should not exceed 300°C for 10 seconds per pin. 0.010 (0.25) Bottom of case to bottom of lead 0.055 (1.40) FIGURE 5: CASE B MAXIMUM DIMENSIONS 0.08 (2.0) 0.070 (1.78) 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 220°C 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 125°C PRODUCTS 125°C PRODUCTS TEST (125°C Products) STANDARD /ES /883 (Class H)* PRE-CAP INSPECTION Method 2017, 2032 yes yes yes TEMPERATURE CYCLE (10 times) Method 1010, Cond. C, -65°C to 150°C Method 1010, Cond. B, -55°C to 125°C no no no yes yes no CONSTANT ACCELERATION Method 2001, 3000 g Method 2001, 500 g no no no yes yes no BURN-IN Method 1015, 160 hours at 125°C 96 hours at 125°C case (typical) no no no yes yes no FINAL ELECTRICAL TEST MIL-PRF-38534, Group A Subgroups 1 through 6: -55°C, +25°C, +125°C Subgroups 1 and 4: +25°C case no yes no yes yes no HERMETICITY TESTING Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Gross Leak, Dip (1 x 10-3) no no yes yes yes no yes yes 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 –55°C to +125°C. 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