c Notice (Soldering and Mounting)

c Notice (Handling)

c Notice (Other)

Before using trimmer capacitors, please test after

assembly in your particular mass production system.

T13E.pdf

Aug.10,2012

7

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

1

1. Soldering

(1) TZR1 series can be soldered by reflow soldering

method and soldering iron. Do not use flow

soldering method (dipping).

(2) Soldering conditions

Refer to the temperature profile.

If the soldering conditions are not suitable, e.g.,

excessive time and/or excessive temperature, the

trimmer capacitor may deviate from the specified

characteristics.

(3) The amount of solder is critical.

(4) The thickness of solder paste should be printed

from 100 micro m to 150 micro m and the dimension

of land pattern should be Murata's standard land

pattern used 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 or contact failure due to

flux wicking up.

(5) When using soldering iron, the diameter of the

string solder shall be less than 0.5mm. The

string solder shall be applied to the lower

part of the terminal only. Do not apply flux

except to the terminals. Excessive amounts of

solder and/or applying solder to the upper part

of the terminal may cause fixed metal rotor or

contact failure due to flux invasion into

the movable part and/or the contact point. The

soldering iron should not come in contact with

the monolithic stator of the trimmer capacitor.

If such contact does occur, the trimmer

capacitor may be damaged.

(6) Our recommended chlorine content of solder is

as follows.

(a) Solder paste: 0.2wt% max.

(b) String solder: 0.5wt% max.

(7) Do not use water-soluble flux (for water

cleaning). To prevent the deterioration of

trimmer capacitor characteristics, apply flux

only to terminals.

2. Mounting

(1) Do not apply excessive force (preferably 5.0 N

[Ref: 500gf] max.), when the trimmer capacitor

is mounted on the PCB.

(2) Do not warp and/or bend PCB to protect trimmer

capacitor from breaking.

(3) Use a pick-up nozzle of a suitable dimension.

(1.1-1.2mm external diameter and 0.8-0.9mm bore

diameter.)

3. Cleaning

This product cannot be cleaned because of open

construction.

4. Other

Note the polarity of the trimmer capacitor to

minimize influence by stray capacitance.

(Refer to the dimensions concerning the polarity.)

1. Use suitable screwdrivers that fit comfortably in

driver slot.

*Recommended screwdriver for manual adjustment

MURATA: KMDR160

2. When adjusting with a screwdriver, do not apply

excessive force (preferably 0.5 N [Ref: 50gf] max.)

to minimize capacitance drift. Excessive force applied

to the screwdriver slot may cause deformation of the

products.

3. Do not apply adhesive, lock paints, or any other

substances to the trimmer capacitor to secure the

rotor position. They may cause corrosion or

electrical contact problems.