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PVA2A474A01 Datasheet(PDF) 25 Page - Murata Manufacturing Co., Ltd. |
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PVA2A474A01 Datasheet(HTML) 25 Page - Murata Manufacturing Co., Ltd. |
25 / 55 page PVM4 Series Notice c Notice (Operating and Storage Conditions) c Notice (Rating) 1. When using with partial load (rheostat), minimize the power depending on the resistance value. 2. The maximum input voltage to a trimmer potentiometer should not exceed (P·R)^1/2 or the maximum operating voltage, whichever is smaller. c Notice (Soldering and Mounting) Continued on the following page. R50E.pdf Jul.23,2012 23 !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. 4 1. Store in temperatures of -10 to +40°C and relative humidity of 30-85%. 2. Do not store in or near corrosive gases. 3. Use within six months after delivery. 4. Open the package just before using. 5. Do not store under direct sunlight. 6. If you use the trimmer potentiometer in an environment other than listed at right, please consult with a Murata factory representative prior to using. The trimmer potentiometer should not be used under the following environmental conditions: (1) Corrosive gaseous atmosphere (Ex. Chlorine gas, Hydrogen sulfide gas, Ammonia gas, Sulfuric acid gas, Nitric oxide gas, etc.) (2) In liquid (Ex. Oil, Medical liquid, Organic solvent, etc.) (3) Dusty/dirty atmosphere (4) Direct sunlight (5) Static voltage or electric/magnetic fields (6) Direct sea breeze (7) Other variations of the above 1. Soldering (1) Can be soldered by reflow soldering method, flow soldering method, and soldering iron. (2) Use our standard land dimension. Excessive land area causes displacement due to the effect of the surface tension of the solder. Insufficient land area leads to insufficient soldering strength of the chip. (3) Soldering conditions Refer to the temperature profile. If the soldering conditions are not suitable, e.g., excessive time and/or excessive temperature, the trimmer potentiometer may deviate from the specified characteristics. (4) Apply the appropriate amount of solder paste. The thickness of solder paste should be printed from 100 micro m to 150 micro m and the dimension of land pattern used should be Murata's standard land pattern at reflow soldering. Insufficient amounts of solder can lead to insufficient soldering strength on PCB. Excessive amounts of solder may cause bridging between the terminals. (5) The soldering iron should not come in contact with the case of the trimmer potentiometer. If such contact does occur, the trimmer potentiometer may be damaged. 2. Mounting (1) Do not apply excessive force, preferably 9.8N max. (Ref. 1kgf) when the trimmer potentiometer is mounted to the PCB. (2) Do not warp and/or bend the PC board to protect trimmer potentiometer from breakage. (3) In chip placers, the recommended size of the cylindrical pick-up nozzle should be outer dimension 4.0mm dia. and inner dimension 2.0mm dia. 3. Cleaning Isopropyl alcohol and ethyl alcohol are available materials for cleaning. For other materials, please consult with a Murata factory representative prior to using. |
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