1.general

1.1application:this specification is appliedto potentiometers used for electronic equipment.

1.2standardatmospheric conditions：

 unlessotherwise specified,the standard range of atmosphericconditions for making measurements and test is per the followinglimits:

  ambient temperature ：15℃ to 35℃

   relativehumidity   ： 25% to 75%

   airpressure        ： 86kpa to 106 kpa

1.3operatingtemperature range   ：-20℃  to +50℃

1.4storagetemperature range     ：-15℃  to +70℃

1.5suggestedstorageperiod      ：about 6 months

2．electronic specification :

item

conditions

specifications

2.1

total resistance

measurement shall be made bythe resistance between terminal 1 and 3 with lever settled atterminal 1 or 3.

10kω

2.2

total resistance

tolerance

±10%

2.3

resistance taper

measurement shall be made bythe resistance law method.measurement stall be made at the position ofright diagram from the edge at the side of terminal 1.when based onterminal 3.  from the edge at the side of terminal3.

out voltage betweenterminals1and2

---------------------------------------------------x

applied voltage between terminals1and 3

b

2.4

residual resistance

        10ω

2.5

rate power

power rating is based oncontinuous full load operation at the maximum voltage between 1 and3. power ratingvs .ambienttemperature shall be denoted on the following graph.

0.2w

item

conditions

specifications

2.6

rated voltage

rated voltage e=√p.r (v)

p: power rating

r: nominal totalresistance

when the rated voltage exceedsthe maximum operating voltage, the maximum operating voltage shallbe the rated voltage

ac 200 v

2.7

rotational noise

dc 20v,when the rated voltageis 20v or less, its rated voltageshall be applied to the terminals between 1and 3.and then the procedures, refer to iec393-1-4.15   traveling speed:20=/sec

less than  47mv

2.8

insulation resistance

a voltage of 500vac shall beapplied for1min,afterwhich measurement shall be made

100 mωormore

2.9

withstand voltage

trip curr ant:2ma measuring frequency:50/60hz

500v ac for 1min.

without damage toparts,

arcing orbreakdown etc

2.10

switch rating

ac 100v  5a

2.11

switch contact

resistance

less than 50mω

3. mechanical specification:

item

conditions

specifications

3.1

total rotation angle

300°±10°

3.2

rotation torque

20∽200gf.cm

3.3

rotation stop

strength

5kgf.cm max

3.4

push-pull strength

8kgf  max

3.5

rotation life

15,000 cycles min

3.6

switch working

angle

50°±10°

3.7

switch working

torque

150∽300gf.cm

4. solderingconditions

4.1 manual soldering :

 temperature of solderingiron       ：300℃or less.

 application time of soldering iron :within 3s.

4.2 dip soldering

  printed wiring board: single-sided copper clad laminateboard with thickness of 1.6mm .

specific gravity: 0.82 or more.

flux shall be applied to the board using a bubble foaming typefluxer.

the board shall be soaked in the flux bubble only to the middleof its thickness.

flux shall not come into contact with the component sidesurface.

preheating:

surface temperature ofboard:          100℃or less.

preheating time:                    within 2 min.

soldering:

solder temperature:                  260℃less.

immersion time:                     within 3 s.

4.3 apply the above soldering process for 1 or 2 times.

5. matters needingattention

5.1 high temperature high humidity or corrosive gases areprohibited in storage.

5.2 keep the principle of “first come, first use”.

5.3 the best way is to use the potentiometer as a four-terminalelement for adjusting voltage of voltage divider. for wiring, you’dbetter choose terminal “1”for grounding and r1 (the load resistanceof

   the potentiometer) should be not smaller than tentimes as rt (see figure 2a).

  except for special design re, thepotentiometer shouldn’t be used as a two-terminal rheostat. thecontact resistance between the resistor and the contact piece willhinder the passing of big electric current, at the sane time, thecurrent at the moving contact may be too big since only par of theeffective travel is in function and lead to local over loading thenfailure of the unit.(see figure 2b).

5.4 when the potentiometer is used as current regulator in dccircuit, dc current will pass the sliding arm thus resistance valuewill rise abnormally because of anodic oxidation. in this case, inthis case, it is recommended to connect the leading-out terminal ofthe resistor to the cathode and that of the sliding arm toanode.(see figure3c)

■dimensions尺寸圖/p.c.b.mounting hole detail線路板安裝孔尺寸圖

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本產(chǎn)品的加工定制是否，品牌是WORLDWALK，型號(hào)是S-RA16K1/SW=6A，種類是帶開(kāi)關(guān)，用途是功率，材料是碳膜，性能是大電流6A，阻值調(diào)節(jié)方式是旋轉(zhuǎn)式，阻值變化方式是B，標(biāo)稱阻值是100Ω~2M，額定功率是0.2（W），阻值允許偏差是±10（%），滑動(dòng)噪聲是47（V），分辨率是100（%），零位電阻是10（Ω），接觸電阻是5（Ω），絕緣電阻是≥100（MΩ），符合度是100