PVG3 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

19

• This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.

3

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) 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.

(2) This product cannot be soldered using the flow

soldering method. If you use the flow soldering

method, the trimmer potentiometer may not

function.

(3) 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.

(4) Apply the appropriate amount of solder paste.

If the amount of solder paste applied to the

land is insufficient, the required adhesive

strength cannot be obtained. If an excessive

amount of solder paste is applied, solder

bridging or flux overflow to the resistive

element surface can occur.

2. Mounting

(1) 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.

(2) Do not apply excessive force, preferably 4.9N

max. (Ref. 500gf) when the trimmer potentiometer

is mounted to the PCB.

(3) Do not warp and/or bend the PC board to protect

trimmer potentiometer from breakage.

(4) In chip placers, the size of the cylindrical

pick-up nozzle should be outer dimension

2.5-3.0mm dia. and inner dimension

2.0-2.5mm dia.

3. Cleaning

Isopropyl alcohol and ethyl alcohol are applicable

solvents for cleaning. If you use any other types

of solvents, please consult with a Murata factory

representative prior to using.