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STF28-461/KH bảng dữ liệu(PDF) 1 Page - Interpoint Corporation Company |
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STF28-461/KH bảng dữ liệu(HTML) 1 Page - Interpoint Corporation Company |
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1 / 10 page  DESCRIPTION The STF28-461™ 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. 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 suppres- sion. OperatiOn The SMSA power converter has an internal 2 µF ceramic 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 SLH 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. For SMHF and SLH converters a 4 µF (or greater) ceramic cap is needed between the filter and converter to complete the last inductive stage of this STF filter. This will ensure unconditional stability when used with the SMHF or SLH. The SMSA does not require this. OptiOnal Damping CirCuit The optional damping circuit (Figure 2) can be used to prevent filter overshoot caused by MIL-STD-704A 80 V, or other, tran- sients having rise times of less than 200 µSec. This damping can be alternately provided with a 1.50 V resistor in series with the filter positive input where the additional line loss can be tolerated. For transients with rise times of greater than 200 µSec, there is no overshoot and the damping circuit is not required. SCreening The STF28-461 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 descriptions. FEaTuRES • FullyqualifiedtoClassHorK • Passivecomponentsusedformaximumtolerancein space environments • -55°Cto+125°Coperation • Nominal28Vinput,0Vto50Voperation • Upto0.8Athroughputcurrent • 55dBattenuationtypicalat500KHz • ComplianttoMIL-STD-461CCE-03 • CompatiblewithMIL-STD-704A-E28VDCpowerbus input VOltage anD Current Input (V) 28 Current (A) 0.8 Crane Aerospace & Electronics Power Solutions STF28-461 EMI Input Filters Crane Aerospace & Electronics ElectronicsGroup(InterpointBrand) POBox97005•RedmondWA98073-9705 425.882.3100•electronics@craneae.com www.craneae.com Page 1 of 10 RevA-20070509 28 VOlT INPuT – 0.8 aMP |
Số phần tương tự - STF28-461/KH |
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Mô tả tương tự - STF28-461/KH |
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