Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP Features Attenuation 70 dB at 500 kHz • Operating temperature -55° to +125°C • Qualified to MIL-PRF-38534 Class H and K • Passive components used for maximum tolerance in space environments • Nominal 28 V input, 0 V to 50 V operation • Up to 5 A throughput current • Compliant to MIL-STD-461C CE-03 • Compatible with MIL-STD-704 A-E 28 VDC power bus Input Voltage and Current Model SFCS28-461 description The Interpoint™ SFCS28-461TM EMI Filter modules are specifically designed to reduce the reflected input ripple current of high frequency DC/DC converters. SFCS28-461 filters minimize electromagnetic interference (EMI) for Interpoint space application converters. These filters are intended for use in 28 volt applications which must meet MIL-STD-461 levels of conducted emissions. One filter can be used with multiple converters up to the rated throughput current of the filter. Screening The SFCS28-461 filter offers three screening options - Space Prototype (O), Class H, or Class K. Radiation tolerant to Radiation Hardness Assurance (RHA) levels of “-” (O) or “H”, per MIL-PRF-38534. Interpoint model numbers use an “O” in the RHA designator position to indicate the “-” (dash) Radiation Hardness Assurance level of MIL-PRF-38534, which is defined as “no RHA”. See “Screening Table 2: Environmental Screening” tables for more information. Input Ripple and EMI Switching DC/DC converters naturally generate two noise components on the power input line: differential noise and common mode noise. Input ripple current refers to both of these components. Differential noise occurs between the positive input and input common. Most Interpoint converters have an input filter that reduces differential noise which is sufficient for most applications. Crane Aerospace & Electronics Power Solutions – Interpoint Products 10301 Willows Rd NE, Redmond, WA 98052 +1.425.882.3100 • [email protected] www.craneae.com/interpoint Current (A) 5 Common mode noise occurs across stray capacitance between the converter’s power train components and the baseplate (bottom of the package) of the converter. Where low noise currents are required to meet CE03 of MIL-STD-461C, a power line filter is needed. The SFCS28-461 Series of EMI power line filters reduces the common mode and differential noise generated by the converters. SFCS28-461 filters reduce input ripple current by at least 60 dB at 500 kHz, 1 MHz, and 5 MHz when used in conjunction with Interpoint DC/DC converters. The filter must be placed as close as possible to the converter for optimum performance. the baseplates of the filter and the converter should be connected with the shortest and widest possible conductors. For the best connection, mount the filter’s and converter’s baseplates on or above a small ground plane. Operation and Temperature All SFCS28-461 filters are rated for full power operation from -55˚C to +125˚C case temperature. Current is derated linearly to zero at +135˚C case temperature. Insertion Loss The maximum DC insertion loss at full load and nominal input voltage represents a power loss of less than 4%. Packaging SFCS28-461 filters are sealed in metal hermetic side-leaded packages. For more information contact your Interpoint representative. Page 1 of 9 SFCS Rev D - 2011.11.07 Cleared by the U.S. Department of Defense (DoD) Office of Security Review (OSR) for public release. OSR case number 11-S-3519, dated September 26, 2011. Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP Operating Conditions and characteristics mechanical and environmental Input Voltage Range •0 to 50 VDC continuous for 28 V models Size (maximum) •3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm). Case U has straight, short leads. Case V has longer leads, bent down. Lead Soldering Temperature (10 sec per pin) •300°C Weight (maximum) •110 grams maximum Storage Temperature Range (Case) •-65°C to +150°C Screening •Space Prototype (O), Class H, or Class K •Radiation tolerant to Radiation Hardness Assurance (RHA) levels of “-” (O) or “H”, per MIL-STD-38534. Interpoint model numbers use an “O” in the RHA designator position to indicate the “-” (dash) Radiation Hardness Assurance level of MIL-PRF-38534, which is defined as “no RHA”. •See Screening Tables 1 and 2 for more information. Available configurations: OO, HH, KH Case Operating Temperature (Tc) •-55˚C to +125˚C full power •-55˚C to +135˚C absolute Derating Output Current •Derate linearly from 100% at 125˚C to 0% at 135˚C case Isolation •100 megohm minimum at 500 VDC •Any pin to case Positive Input 100 H 17 H 100 H 17 H 6 F 50 V 17 H 6 F 50 V Positive Output 6 F 50 V 3.2 Output Common Input Common .015 F 500 V .015 F 500 V .015 F 500 V SFCS28-461 Figure 1: Schematic www.craneae.com/interpoint Page 2 of 9 SFCS Rev D - 2011.11.07 .015 F 500 V Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP Pin 1 PIN OUT Designation 1, 2, 3 Positive Input 7, 8, 9 Output Common 4, 5, 6 Input Common 10, 11, 12 Baseplate Positive Output Case Ground 2 Notes 1. All pins must be connected. 2.The baseplate is the only case ground connection and should directly contact chassis ground. Angled corner indicates pin one. 1 TOP VIEW (Pin side, marked side) 2 3 4 5 11 Case U (See case U and V for dimensions.) 6 10 9 8 7 Figure 2: Pin Out SFCS28-461 www.craneae.com/interpoint 12 Page 3 of 9 SFCS Rev D - 2011.11.07 Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP model numbering key Base Model SFCS DLA Numbers DLA Drawing (5915) 28 – 461 V / K H Input Voltage MIL-STD-461 Compliant SFCS28-461 Similar Part 00003-01HXC SFCS28-461/HH 00003-01KXC SFCS28-461/KH For exact specifications for a DLA product, refer to the DLA drawing. DLA drawings can be downloaded from: http://www.landandmaritime.dla.mil/Programs/MilSpec/ default.aspx Case Option (Standard case has no designator in this position) Screening Radiation Level model Number Options 1 To determine the model number enter one option from each category in the form below. Category Base Model and Input Voltage Options SFCS28-461 Fill in for model # SFCS28-461 __________ Case Option 2 Screening 3 RHA 4 (side-leaded case, leave blank) O O V (leads bent down) H H K / _______ Notes: 1. See Model Numbering Key above for an example of a model number. 2. Case Options: For the standard case, Case U, leave the case option blank. For Case V with leads bent down, insert the letter V in the Case Option position. 3. Screening: A screening level of O is a Space Prototype and is only used with RHA O. See Screening Tables 1 and 2 for more information. “H” indicates Class H and “K” indicates Class K of MIL-PRF-38534. 4. RHA: Interpoint model numbers use an “O” in the RHA designator position to indicate the “-” (dash) Radiation Hardness Assurance level of MIL-PRF-38534, which is defined as “no RHA.” RHA O is only available with Screening level O. See Screening Table 2 for more information. www.craneae.com/interpoint Page 4 of 9 SFCS Rev D - 2011.11.07 Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP Electrical Characteristics: -55 TO +125°C TC, nominal Vin, unless otherwise specified. SFCS28-461 UNITS PARAMETER CONDITIONS MIN TYP MAX INPUT VOLTAGE CONTINUOUS TRANSIENT 100 ms 1, 2, 3 0 28 50 1 VDC — — 100 V 500 kHz 60 70 — 1 MHz 60 70 — dB 5 MHz 60 70 MAX CURRENT TC = 25°C — — 51 W — — 0.2 ohms 50 60 70 nF NOISE REJECTION POWER DISSIPATION DC RESISTANCE (RDC) CAPACITANCE TC = 25°C OUTPUT VOLTAGE OUTPUT CURRENT1 TC = 25°C @ 1 A ANY PIN TO CASE STEADY STATE VOUT = VIN - IIN(RDC) STEADY STATE 1 — — 5 Notes 1.Guaranteed by design, not tested. 2.28 V = 0.5 Ω source impedance. 3. The filter will not be damaged by a 100 volt transient but the transient will be passed on to the converter. www.craneae.com/interpoint Page 5 of 9 SFCS Rev D - 2011.11.07 VDC A Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filter Cases 28 Volt input – 5 AMP TOP VIEW CASE U* Flanged case, short-leaded *Does not require designator in Case Option position of model number. 1.505 (38.23) max. 2 11 0.850 (21.59) 3 10 0.650 (16.51) 4 9 0.450 (11.43) 5 8 0.250 (6.35) 6 7 0.000 0.120 (3.05) 0.000 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 Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300°C for 10 seconds per pin. Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel Pins #52 alloy/Gold, compression glass seal Seal Hole: 0.100 ±0.002 (2.54 ±0.05) Case U, Rev F, 20100503 Figure 32: Case U www.craneae.com/interpoint Page 6 of 9 SFCS Rev D - 2011.11.07 0.220 (5.59 1.050 (26.67) 0.040 dia (1.02) 0.050 (1.27) 0.000 12 2.750 (69.85) 1 0.120 (3.05) 0.250 (6.35) 1.250 (31.75) 2.880 (73.15) 3.005 (76.33) max. 1.380 (35.05) Seam Seal 0.128 dia (3.25). 0.23 (5.8) Pin Length 0.400 (10.16) max. Angled corner indicates pin one. Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filter Cases 28 Volt input – 5 AMP TOP VIEW CASE V* Flanged case, down leaded *Designator "V" required in Case Option position of model number. Maximum dimensions: 3.005 x 1.505 (76.33 x 38.23 mm) Angled corner indicates pin one. 3.45 (87.6) Reference (lead center to lead center) 0.128 dia (3.25) 0.040 dia (1.02) 1.380 (35.05) 1.250 (31.75) 12 1 1.050 (26.67) 11 2 0.850 (21.59) 10 3 0.650 (16.51) 9 4 0.450 (11.43) 8 5 0.250 (6.35) 7 6 0.120 (3.05) Seam 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 Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300°C for 10 seconds per pin. Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel Pins #52 alloy/Gold, compresssion glas seal Seal Hole: 0.120 ±0.002 (3.05 ±0.05) Case V, Rev F, 2010624 Please refer to the numerical dimensions for accuracy. Figure 33: Case V www.craneae.com/interpoint Page 7 of 9 SFCS Rev D - 2011.11.07 ref: 0.250 ±0.050 (6.35 ±1.27) 0.050 (1.27) 0.000 0.220 (5.59) 0.400 (10.16) max 2.880 (73.15) 3.005 (76.33) max 2.750 (69.85) 0.250 ±0.010 (6.35 ±0.3) 0.000 0.120 (3.05) ref: 0.225 (5.72 0.000 Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP emi FiLterS PrototyPe, CLASS h AnD CLASS K, miL-PrF-38534 eLement eVALuAtion non-QmL 1 PrototyPe ComPonent-LeVeL teSt PerFormeD Element Electrical /o QmL CLASS h m/S 2 m/S 2 /h CLASS K P3 m/S 2 /K P3 Visual Internal Visual Temperature Cycling Constant Acceleration Interim Electrical Burn-in Post Burn-in Electrical Steady State Life Voltage Conditioning Aging Visual Inspection Final Electrical SEM Notes: 1. Non-QML products may not meet all of the requirements of MIL-PRF-38534. 2. M/S = Active components (Microcircuit and Semiconductor Die) 3. P = Passive components, Class H and K element evaluation. Not applicable to Space Prototype (“O”) element evaluation. Definitions: Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534 SEM: Scanning Electron Microscopy Screening Table 1: Element Evaluation Screening table 2: eleMent eValuatiOn—eMi FilterS prOtOtYpe, claSS h and claSS k www.craneae.com/interpoint Page 8 of 9 SFCS Rev D - 2011.11.07 Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP emi FiLterS PrototyPe, CLASS h AnD CLASS K, miL-PrF-38534 enVironmentAL SCreening AnD rhA1 non-QMl 2 teSt PerFormeD CLASS h CLASS K /oo pre-cap inspection, Method 2017, 2032 QmL 3 /hh 4 /Kh 4 temperature cycle (10 times) Method 1010, Cond. C, -65°C to +150°C, ambient constant acceleration Method 2001, 3000 g (Qual 5000 g) pind, test Method 2020, cond. a pre burn-in test, group a, subgroups 1 and 4 Burn-in Method 1015, +125°c case, typical 5 6 96 hours 160 hours 2 x 160 hours (includes mid-BI test) Final electrical test, Mil-prF-38534, group a, Subgroups 1 and 4: +25°C case Subgroups 1 through 6, -55°C, +25°C, +125°C case Hermeticity test Gross Leak, Method 1014 Fine Leak, Method 1014 radiography, Method 2012 post radiography electrical test, +25°c case 5 Final visual inspection, Method 2009 radiation tolerant– Tested lots up to 1,000 krad(Si) total dose, applies to EMI filters only Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. Our Redmond site has a DLA approved RHA plan for Interpoint power products. 2. “OO” prototypes are non-QML products and may not meet all of the requirements of MIL-PRF-38534. “O” in the RHA designator position in Interpoint model numbers indicates DLA RHA “-” defined as no RHA. 3. All processes are QML qualified and performed by certified operators. 4. Our EMI filters are designed exclusively with passive components providing maximum tolerance for space environment requirements. 5. Not required by DLA but performed to assure product quality. 6. Burn-in temperature designed to bring the case temperature to +125°C minimum. Burn-in is a powered test. Screening Table 2: Environmental Screening Screening table 5: enVirOnMental Screening and rha—eMi FilterS prOtOtYpe, claSS h and claSS k SCFS28-461 EMI Input Filters, SFCS Rev D - 2011.11.07. This revision supersedes all previous releases. All technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. Crane Electronics, Inc. reserves the right to make changes in products or specifications without notice. Interpoint and SFCS28-461 are trademarks of Crane Electronics, Inc. Copyright © 1999 - 2011 Crane Electronics, Inc. All rights reserved. www.craneae.com/interpoint Page 9 of 9