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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PRF18BE471RB5RB датащи(PDF) 13 Page - Murata Manufacturing Co., Ltd. |
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PRF18BE471RB5RB датащи(HTML) 13 Page - Murata Manufacturing Co., Ltd. |
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13 / 104 page  R90E.pdf Sep.24,2012 !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. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 11 Part Number Max. Voltage (V) Max. Current (A) Hold Current (at +60 °C) (mA) Trip Current (at -10 °C) (mA) Resistance (at +25 °C) (ohm) Curie Point (°C) * More Details PRG21BC0R2MM1RA 6 10 500 2000 0.2 ±20% 90 page 14 PRG21BC4R7MM1RA 30 5.0 100 400 4.7 ±20% 90 page 14 PRG21BC6R8MM1RA 30 3.5 80 320 6.8 ±20% 90 page 14 PRG21BC1R0MM1RA 12 10 220 850 1.0 ±20% 90 page 14 PRG21BC2R2MM1RA 16 6.5 150 600 2.2 ±20% 90 page 14 PRG21BC3R3MM1RA 20 6.0 120 480 3.3 ±20% 90 page 14 PRG21BC0R6MM1RA 6 10 285 1100 0.6 ±20% 90 page 14 *Curie Point means the temperature at which the resistance value reaches twice the resistance at 25°C. Please ask for details. POSISTOR r is an effective current limit solution based on LED's allowable current and temperature characteristics. (1) LED lighting instruments (2) LED backlight of flat displays c Current Limiter for LED Chip POSISTOR r: PRG series 1. Applications (1) Higher LED brightness versus a fixed resistor. LED can work in the smaller series resistance with POSISTOR r at normal operation temperature. The number of LEDs is possibly reduced. (2) LED lifetime may be extended due to the current limiting function of the POSISTOR r in cases of overheat or overcurrent situation. (3) Small 0805 package allows the POSISTOR r to be placed close to the LED. It offers accurate detection of ambient temperature near LED and increases flexibility of packaging. 2. Benefits Choose an appropriate part number having max. voltage and resistance value. Review the protective threshold current range based on the operating current and temperature of the LED. 3. Recommended part numbers IC LED Driving Circuit LED Current Protected by POSISTOR r Higher brightness vs. a fixed resistor Current Limit by a fixed resistor Allowable LED Working Zone Ambient Temp. IC Allowable LED Working Zone Ambient Temp. Application Notes See below figures. |
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