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BLM21B Datasheet(PDF) 10 Page - Murata Manufacturing Co., Ltd. |
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BLM21B Datasheet(HTML) 10 Page - Murata Manufacturing Co., Ltd. |
10 / 93 page 8 1 !Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. • This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. BLM18A Series Conductive Glue Applicable Type s Features The chip ferrite beads BLM series is designed to function nearly as a resistor at noise frequencies, which greatly reduces the possibility of resonance and leaves signal wave forms undistorted. BLM series is effective in circuits without stable ground lines because BLM series does not need a connection to ground. BLM_A series generates an impedance from the relatively low frequencies. Therefore BLM_A series is effective in noise suppression in a wide frequency range (30MHz to several hundred MHz). BLM18A_WH series is designed for conductive glue mounting method, not for normal soldering method. Please contact us for applicable mounting method for BLM18A_WH series. 0.4 ±0.2 1.6 ±0.15 0.8 ±0.15 (in mm) Part Number Impedance (at 100MHz/20 °C) (ohm) Rated Current (mA) DC Resistance (max.) (ohm) Operating Temperature Range ( °C) BLM18AG471WH1 470 ±25% 200 0.20 -55 to +150 BLM18AG102WH1 1000 ±25% 200 0.70 -55 to +150 s Equivalent Circuit (Resistance element becomes dominant at high frequencies.) s Impedance - Frequency (Typical) BLM18A Series Frequency (MHz) 0 300 600 900 1200 1500 1 10 100 1000 BLM18AG102WH1 BLM18AG471WH1 s Impedance - Frequency Characteristics BLM18AG471WH1 Frequency (MHz) 0 200 400 600 1 10 100 1000 Z X R BLM18AG102WH1 Frequency (MHz) 0 300 600 900 1200 1500 1 10 100 1000 Z X R C50E.pdf Aug.28,2008 |
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