SPECIFICATION No. JVR03Z-7148B

7/12

UNCONTROLLED

COPY

REFERENCE ONLY

7. Caution for Using

7.1 Mounting the product

Please use a pick-up nozzle with 2.5 to 2.8mm outer dia., 2mm inner dia.

7.2 Soldering

(1) Standard soldering condition for lead-free solder (96.5Sn-3.0Ag-0.5Cu)

Before using other soldering conditions than those listed above, please consult with a Murata factory

representative prior to using. 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) The amount of solder is critical. The thickness of solder paste should be printed from 100

µm to 150µm

and the dimension of land pattern should be used Murata’s standard land pattern at re-flow soldering.

Insufficient amounts of solder can lead to insufficient soldering strength on the PCB.

Excessive amounts of solder may cause the bridging between the terminals or the contact failure due

to flux wicking up.

(3) The soldering iron should not come in contact with the resin substrate of the trimmer potentiometer.

If such contact does occur, the trimmer potentiometer may be damaged.

(4) PVZ3 series can not be flow soldering. If you use the flow soldering method, the trimmer potentiometer

may not function.

(5) Trimmer potentiometer is designed for the purpose of soldering. If you intend to connect with conductive

adhesive or other method, please consult with a Murata factory representative prior to using.

7.3 Cleaning

In case there is flux on the resistive element, clean sufficiently by cleaning solvents and remove all residual

flux perfectly. When cleaning the trimmer potentiometer, only use Isopropyl-alcohol and Ethyl-alcohol.

If you use any other types of solvents, please evaluate performance by your set. Moreover, please confirm

no damage for trimmer potentiometer after cleaning by your conditions.

7.4 Adjusting

(1) PVZ3 series dose not have a mechanical stop for over rotation, so please use within the effective

rotational angle. The #2 terminal is opened electrically out of effective rotational angle.

(2) Please use suitable screwdrivers that fit comfortably in driver slot. We recommend the screwdrivers

below.

(3) When using a lock paint to fix adjustment position, please evaluate performance by your set.

Lock paint may become the cause of corrosion and contact fault.

Soldering iron

Temperature of tip

Diameter

Soldering time

Wattage of iron

: 360°C max.

: 2mm max.

: 3 sec. max.

: 30W max.

Manufactures

Model Number

MURATA Model Number

VESSEL MFG.

NO.9000+1.7x30

KMDR080

VESSEL MFG.

NO.9000 1.8x30

KMDR110

60 to 120 sec.

30 to 60 sec.

Time

0

100

180

245

Pre-heating(in the air)

Soldering

Gradual cooling

(in the air)

Reflow soldering

150

220

(Melting zone)