1.General

1.1Application:This specification is applied to potentiometers  used   for   electronic equipment.

1.2Standard atmospheric conditions

 Unless otherwise specified,the standard range of atmospheric conditions for making

   measurements and test is per the following limits:

  Ambient temperature ：15℃ to 35℃

   Relative humidity     ：25% to 75%

   Air pressure          ： 86 kpa to 106 kpa

1.3Operating temperature range   ：-10℃  to  +50℃

1.4Storage temperature range     ：-15℃  to  +70℃

1.5Suggested storage period       ：About 6 months

2．Electronic Specification :

	Item	Conditions	Specifications
2.1	Total resistance	Measurement shall be made by the resistance between terminal 1 and 3 with lever settled at terminal 1 or 3.	100KΩ
2.2	Total resistance tolerance		±10%
2.3	Resistance taper	Measurement shall be made by the resistance law method.Measurement stall be made at the position of right diagram from the edge at the side of terminal 1.When based on terminal 3.  from the edge at the side of terminal 3.   Out voltage between terminals1and2 --------------------------------------------------- X 100% Applied voltage between terminals 1and 3	B
2.4	Residual Resistance		20ΩMax.

2．Electronic Specification :

	Item	Conditions	Specifications
2.6	Rated voltage	Rated voltage  E=√P.R (V) P: power rating R: nominal total resistance When the rated voltage exceeds the maximum operating voltage, the maximum operating voltage shall be the rated voltage	AC 100 V
2.7	Rotational noise	Dc 20V,when the rated voltage is 20v or less, its rated voltageShall be applied to the terminals between 1 and 3.And then the Procedures, refer to IEC 393-1-4.15   Traveling speed:20=/sec	Less than  47mV
2.8	Insulation resistance	A voltage of 100VDC shall be applied for1min,after which measurement shall be made	50 MΩor more
2.9	Withstand voltage	Trip curr ant:2mA  Measuring frequency:50/60Hz 250V AC for 1min.	Without damage to parts, Arcing or breakdown etc

3. Mechanical Specification :

	Item	Conditions	Specifications
3.1	Travel		10mm±0.5
3.2	Sliding force		15∽60gf.cm
3.3	Stopper strength		1kgf.cm Max
3.4	Sliding life		10,000 Cycles Min

4. Soldering conditions

4.1 Manual soldering :

 Temperature of soldering iron       ：300℃or less.

 Application time of soldering iron :within 3s.

4.2 Dip Soldering

  Printed wiring board: Single-sided copper clad laminate board with

thickness of 1.6mm .

Flux:

Specific gravity: 0.82 or more.

Flux shall be applied to the board using a bubble foaming type fluxer

The board shall be soaked in the flux bubble only to the middle of its thickness.

Flux shall not come into contact with the component side surface.

Preheating:

Surface temperature of board:           100℃or less.

Preheating time :                     Within 2 min.

Soldering:

Solder temperature :                   260℃less.

Immersion time:                      Within 3 s.