Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP Features • Fully qualified to Class H or K • Passive components used for maximum tolerance in space environments • -55°C to +125°C operation • Nominal 28 V input, 0 V to 50 V operation • Up to 5 A throughput current • 70 dB attenuation typical at 500KHz • 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 SFCS-461TM Series 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’s 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-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 “Class H and K, MIL-PRF-38534 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 Electronics Group (Interpoint Brand) PO Box 97005 • Redmond WA 98073-9705 425.882.3100 • [email protected] www.craneae.com 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 MILSTD-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’s 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 Series 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 of 9 Rev B - 20070404 Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP mechanical and environmental Operating Conditions and characteristics Input Voltage Range •0 to 50 VDC continuous for 28 V models Lead Soldering Temperature (10 sec per pin) •300°C Storage Temperature Range (Case) •-65°C to +150°C Case Operating Temperature (Tc) •-55˚C to +125˚C full power •-55˚C to +135˚C absolute Derating Output Power/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 Size (maximum) 3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm) See case U for dimensions. Weight (maximum) 110 grams maximum 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 “Class H and K, MIL-PRF-38534 Screening” tables for more information. Available configurations: OO, HH, KH 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 Page of 9 Rev B - 20070404 .015 �F 500 V Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP PIN OUT Pin1Designation 1, 2, 3Positive Input 4, 5, 6Input Common 7, 8, 9Output Common 10, 11, 12Positive Output—Case Ground2 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) 11 3 10 4 9 5 6 See case U for dimensions. Figure 2: Pin Out SFCS28-461 www.craneae.com 12 2 Page of 9 Rev B - 20070404 8 7 Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP model numbering key Base Model SFCS 28 – 461 / K H Input Voltage MIL-STD-461 Compliant Case Option (Standard case has no designator in this position) Screening Radiation Level Model Selection SFCS28 Base model - __461___ MIL-STD-461 compliant Case option / Screening Choose one from each of the following rows Case option Screening Standard case has no designator in this position OO* - Space prototype, HH, KH *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” www.craneae.com Page of 9 Rev B - 20070404 Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP Electrical Characteristics: 25˚C Tc, nominal Vin, unless otherwise specified. sfcs28-461 PARAMETER INPUT VOLTAGE CONDITIONS MIN TYP CONTINUOUS 0 28 UNITS 50 VDC -100 — 100 V 500 kHz 60 70 — 1 MHz 60 70 — POWER DISSIPATION MAX CURRENT TC = 25°C — — 5 W 5 MHz 60 70 — dB DC RESISTANCE (RDC) TC = 25°C @ 1 A — — 0.2 V ANY PIN TO CASE 50 60 70 TRANSIENT 100 ms1, 2 NOISE REJECTION CAPACITANCE OUTPUT VOLTAGE OUTPUT CURRENT1 STEADY STATE STEADY STATE VOUT = VIN - IIN(RDC) — — 5 Notes 1.Guaranteed by design, not tested. 2.28 V = 0.5 Ω source impedance. www.craneae.com MAX Page of 9 Rev B - 20070404 dB nF 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 *Case U does not require designator in Case Option position of model number. 0.23 (5.8) Lead Length 1.505 (38.23) max. 1.050 (26.67) 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 2.750 (69.85) 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 0.220 (5.59 12 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/Nickel/Gold; compression glass seal Case U, Rev C, 20060302 Please refer to the numerical dimensions for accuracy. All 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. Copyright © 1999-2006 Interpoint Corp. All rights reserved. Figure 32: Case U www.craneae.com Page of 9 Rev B - 20070404 0.050 (1.27) 0.000 1 0.120 (3.05) 0.250 (6.35) 1.250 (31.75) 0.040 dia (1.02) 2.880 (73.15) 3.005 (76.33) max. 1.380 (35.05) Seam Seal 0.128 dia (3.25). 0.400 (10.16) max. Angled corner indicates pin one. Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP Class H and K, MIL-PRF-38534 Element Evaluation Space Test PerformedPrototype OClass HClass K non-QML1 QML QML (component level) M/S2P3 M/S2P3 M/S2P3 Element Electrical yes no yes yes yes yes Element Visual no no yes yes yes yes Internal Visual no N/A yes N/A yes N/A Temperature Cycling no no no no yes yes Constant Acceleration no no no no yes yes Interim Electrical no N/A no N/A yes N/A Burn-in no N/A no N/A yes N/A Post Burn-in Electrical no N/A no N/A yes N/A Steady State Life no N/A no N/A yes N/A Voltage Conditioning Aging N/A no N/A no N/A yes Visual Inspection no no N/A no N/A yes Final Electrical Wire Bond Evaluation4 no no yes yes yes yes no no yes yes yes yes SEM SLAM™/C-SAM: Input capacitors only (Add’l test, not req. by H or K) no N/A no N/A yes N/A no no yes no yes no Notes: 1. Non-QML products do not meet all of the requirements of MIL-PRF-38534. 2. M/S = Active components (Microcircuit and Semiconductor Die) 3. P = Passive components 4. Not applicable to EMI filters that have no wirebonds. Definitions: Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534 SEM: Scanning Electron Microscopy SLAM™: Scanning Laser Acoustic Microscopy C-SAM: C - Mode Scanning Acoustic Microscopy www.craneae.com Page of 9 Rev B - 20070404 Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP Class H and K, MIL-PRF-38534 Environmental Screening Test Performed Space Prototype O (end item level) non-QML1 2 Non-destruct bond pull Method 2023 no Pre-cap Inspection Method 2017, 2032 yes Temperature Cycle (10 times) Method 1010, Cond. C, -65°C to 150°C, ambient yes Constant Acceleration Method 2001, 3000 g yes PIND Test Method 2020, Cond. A no Pre burn-in test yes Burn-in Method 1015, 125°C case, typical 96 hours yes 160 hours no 2 x 160 hour (includes mid BI test) no Final electrical test MIL-PRF-38534 Group A, Subgroups 1 through 6 -55°C, +25°C, +125°C case yes Radiography Method 2012 N/A Post Radiography Electrical Test Room temperature N/A Hermeticity test Fine Leak, Method 1014, Cond. A yes Gross Leak, Method 1014, Cond. C yes Final visual inspection Method 2009 yes Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. Space Prototype (O), non-QML products, do not meet all of the requirements of MIL-PRF-38534. 2. Not applicable to EMI filters that have no wirebonds. 3. Not required by DSCC but performed to assure product quality. www.craneae.com Page of 9 Rev B - 20070404 Class H, QML Class K, QML yes3 yes yes yes yes yes yes yes yes3 yes yes yes no yes no no no yes yes yes N/A yes N/A yes3 yes yes yes yes yes yes Crane Aerospace & Electronics Power Solutions SFCS28-461 EMI Input Filters 28 Volt input – 5 AMP Class H and K, MIL-PRF-38534 Radiation Assurance Product Level AvailabilityEnvironmental Screening Levels space Prototype OClass H Class K Radiation Hardness non-QML3 QML QML Assurance Levels O2: Standard, no radiation guarantee OO HO N/A H1, 5: Radiation tolerant – Tested lots Up to 1,000 K Rads (Si) total dose N/A HH4 KH4 Notes: 1. Our EMI filters are designed exclusively with passive components providing maximum tolerance for space environment requirements. 2. 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”. 3. Space Prototype (O), non-QML products, do not meet all of the requirements of MIL-PRF-38534. 4. Redmond site, Interpoint, has a Radiation Hardness assurance plan on file with DSCC. Our SMD products with RHA "H" code meet DSCC requirements. 5. Space filters are only available with Radiation Hardness Assurance (RHA) levels of “O” and “H”. SFCS EMI Input Filters, Rev B - 20070404. This revision supercedes all previous releases. 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. SFCS Series is a trademark of Interpoint. Copyright © 1999 - 2007 Interpoint Corporation. All rights reserved. www.craneae.com Page of 9