 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| EMI INPUT FILTER 28 VOLT INPUT FEATURES * Fully qualified to Class H or K * Passive components for maximum tolerance in space environments * -55 to +125C operation * 28 volt input * Up to 0.8 amps throughput current * 50 dB minimum attenuation at 500 kHz Size (max.): * Compliant to MIL-STD-461C, CE03 Weight: * Compatible with MIL-STD-704E Screening: DC power bus STF28-461 EMI FILTER 0.8 AMP MODEL STF28-461 0.8 amp 0.975 x 0.800 x 0.270 (24.77 x 20.32 x 6.86 mm) See Section B8, cases A1, for dimensions. 10.3 grams typical, 11.5 grams maximum Standard, Class H, or Class K (MIL-PRF-38534) See Section C2 for screening options, see Section A5 for ordering information. DESCRIPTION The STF28-461TM EMI filter module has been designed as a companion for Interpoint SMSA flyback power converters. Multiple SMSA power converters can be operated from a single filter provided the total power line current does not exceed the filter maximum rating. The STF filter will reduce the SMSA's power line reflected ripple current to within the limit of MIL-STD-461C, Method CE03, as shown in the example of Figures 4 and 5. The STF filter is fabricated using thick film hybrid technology and is sealed in a metal package for space, military, aerospace and other applications requiring EMI suppression. OPERATION The SMSA power converter has an internal capacitor across its input power terminals. When the SMSA and STF filters are used together, this capacitor becomes part of the filter and forms its final LC output section. The STF filter provides both differential and common mode rejection bringing DC/DC converters into compliance with MIL-STD-461C CE03. It is designed to be used with the SMSA, SMHF, and MCH Series of converters. The STF filter can be used with multiple converters up to the rated current of the filter. For more information, contact your Interpoint representative listed in Section A5. SCREENING AND REPORTS The STF28-461 filter offers three screening options - Standard, Class H, or Class K. See Section C2, Quality Assurance, pages C27 through C2-9, for descriptions. Detailed reports on product performance are also available and are listed on page C2-9. 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. STF28-461 is a trademark of Interpoint. Copyright (c) 1999 Interpoint. All rights reserved. B1-16 CASE A Dot on top of case indicates pin one. CASES BOTTOM VIEW CASE A1 FMSA EMI Filter: Screening - Standard, ES, or 883 STF EMI Filter: Screening - Space Standard, H, or K Seam Seal Projection Weld 0.697 (17.70 0.397 (10.08) CASE A BOTTOM VIEW 0.800 max See Figures 2 - 4 (20.32) for pin configurations. Squared corner and dot on top of case indicate pin one. 1 8 23 4 0.975 max (24.77) Materials Header Kovar/Nickel/Gold (Case A3, Kovar/Nickel) 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 Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300C for 10 seconds per pin. 0.270 max (6.98) 0.000 0.27 0.02 (6.9 0.5) 0.097 (2.46) 0.000 0.270 max (6.86) 0.27 0.02 (6.9 0.5) 0.000 0.000 7 65 0.135 (3.43) FIGURE 2: CASE A1 0.018 0.002 dia. (0.46 0.05) BOTTOM VIEW CASE A2 MCH Series: Screening - Standard, ES, or 883 SLH Series: Screening - Space Standard, H, or K Seam Seal Projection Weld 0.697 (17.70 0.018 0.002 dia. (0.46 0.05) 0.097 (2.46) 0.000 0.27 0.02 (6.9 0.5) 0.270 max (6.98) 0.000 0.000 0.270 max (6.86) 0.000 0.27 0.02 (6.9 0.5) 7 6 5 Squared corner and dot on top of case indicate pin one. 12 3 4 FIGURE 1: CASE A MAXIMUM DIMENSIONS 0.135 (3.43) 0.235 (5.97) FIGURE 3: CASE A2 BOTTOM VIEW CASE A3 DCH Series: Screening - Standard or ES Seam Seal Projection Weld 0.697 (17.70 0.018 0.002 dia. (0.46 0.05) 0.097 (2.46) 0.000 0.000 0.350 max (8.89) 0.27 0.02 (6.9 0.5) 0.350 max (8.89) 0.000 0.27 0.02 (6.9 0.5) 0.000 16 15 14 9 Dot on top of case indicates pin one. 123 8 0.135 (3.43) 0.235 (5.97) 0.335 (8.51) 0.435 (11.05) 0.535 (13.59) 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. FIGURE 4: CASE A3 B8-6 0.835 (21.21) 0.835 (21.21) 0.735 (18.67) 0.835 (21.21) QA SCREENING SPACE PRODUCTS SPACE PRODUCTS ELEMENT EVALUATION TEST PERFORMED (COMPONENT LEVEL) Element Electrical Element 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 Wire Bond Evaluation* SEM SLAMTM/C-SAM: Input capacitors only (Add'l test, not req. by H or K) Notes M/S P * STANDARD CLASS (O) H M/S P M/S P yes no no no no no no no no no no no no no no no no no no no no no no no no no no no no no yes yes yes no no no no no no no no yes yes no no CLASS K M/S P yes yes no yes yes no no no no yes yes yes yes no yes yes yes yes yes no no no no no no no no no yes yes yes yes yes yes yes no no yes yes yes yes no yes yes no Active components (Microcircuit and Semiconductor Die) Passive components 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 SLAMTM: Scanning Laser Acoustic Microscopy C-SAM: C - Mode Scanning Acoustic Microscopy Applies to the following products: SMFLHP Series SMFL Series SMHP Series (O&H only) SMTR Series SSP Series SMHF Series SMSA Series SLH Series SLIM Module SFME120 EMI Filter SFME28 EMI Filter SFCS EMI Filter SFMC EMI Filter STF EMI Filter C2-7 QA SCREENING SPACE PRODUCTS ENVIRONMENTAL SCREENING TEST PERFORMED (END ITEM LEVEL) Non-destruct bond pull* Method 2023 Pre-cap inspection Method 2017, 2032 Temperature cycle Method 1010, Cond. C Constant acceleration Method 2001, 3000 g PIND Test Method 2020, Cond. B Radiography Method 2012 Pre burn-in test Burn-in, Method 1015, 125C 96 hours 160 hours 2 x 160 hour (includes mid BI test) Final electrical test MIL-PRF-38534, Group A Hermeticity test Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Final visual inspection Method 2009 STANDARD (O) no yes yes yes no no yes yes no no yes CLASS H no yes yes yes no no yes no yes no yes CLASS K yes yes yes yes yes yes yes no no yes yes yes yes yes yes yes yes yes yes yes Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Note * Not applicable to EMI filters that have no wirebonds. Applies to the following products: SMFLHP Series SMFL Series SMHP Series (O&H only) SMTR Series SSP Series SMHF Series SMSA Series SLH Series SLIM Module SFME120 EMI Filter SFME28 EMI Filter SFCS EMI Filter SFMC EMI Filter STF EMI Filter C2-8 |
Price & Availability of STF28-461
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |