337 rk203 ec20a heavy rotation torque and good operational feel, available in potentiometer and encoder types 20mm size metal shaft type refer to p.339 for for encoder switch specifications.. refer to p.339 for attached parts. refer to p.349 for soldering conditions. number of resistor element s mounting directio operating section length of operating sectionmm number of positions rotational angle total resistance k ? resistance taper minimum order unit pcs. products no drawing no. japan expert single- unit vertical type flat 30 17 220 10 b 400 800 rk203111000v 1 products line potentiometer encoder (incremental type typical specifications items specifications potentiometer encoder rating 0.05w 1ma 5v dc total resistance tolerance 20 `` maximum operating voltage 50v ac, 30v dc `` detent torque 4020mn?m operating life 30,000 cycles operating temperature range ?40 to 85 ?30 to 80 2 drawing no. 3 ec20a1820401 ec20a1824401 products no 400 800 minimum order unit pcs. japan expert 18 number of detent 18 number of pulse 1. 5 travel of push-on switchmm flat shaft configuration 30 length of operating sectionmm vertical type mounting directio photo style pc board mounting hole dimensions viewed from mounting side rk203 without switch type potentiometer type no. 1 dimensions 1. only the encoder type can be supplied with a push-on switch. 2. shaft design and other features are customizable. note 3.75 1.25 6.25 9 10 18.4 1.5 2.6 21 3 3-?1.2hole 1.5 10 30 12 4.5 ?6 2.5 3.5 3.5 8 c1 m90.75 3-1 ( 17.8 ) 15.5 19.2 8.3 ?3 1.5 9 1 nc nc nc nc nc 3 2 ?20.2 mounting surface packing specifications tray number of packages pcs. export package measurements mm 1 case /japan 1 case /export packing 400 800 374508272 rotary potentiometers slide potentiometers metal shaft insulated shaft knob operating ring type
338 10 1.5 10 12 30 switch travel ?6 4.5 c1 2.5 3.5 3.5 1.5 1.5 9 ?20.2 19.2 8.3 15.5 ?3 nc nc bc nc m9g0.75 a d e mounting surface 3?1 d e (sw02) (sw01) (17.8) 2-0.9 dimensions ec20a without switch type, incremental type ec20a with push-on switch (travel 1.5mm), incremental type photo style pc board mounting hole dimensions viewed from mounting side 1.25 3.75 6.25 9 10 18.4 1.5 2.6 a 3-?1.2 hole c b b a d cb e 2.6 18.4 5 6.25 3.75 1.25 1.5 10 9 7 5? ?1.2 hole unit:mm 1.5 10 30 12 2.5 3.5 8 m9g0.75 4.5 ?6 c1 3-1 ( 17.8 ) ?20.2 15.5 19.2 8.3 ?3 1.5 9 nc nc nc b a c mounting surface 3.5 no. 2 3 output wave ec20a sliding noise ec20a the dotted lines indicate detent positions at r 5k chattering 8ms max., bounce 5ms max. v 1 =v 2 =2.5v max. 5v dc r r terminal b terminal a terminal c encoder test circuit t t v 1 v 2 5v on onoff output waveform sliding direction t : masking time to avoid chattering measurement condition : rotation speed 360?/s shaft rotational direction clockwise on a terminal a?c a terminal a?c b terminal b?c b terminal b?c signal output counter-clockwise off on off on off on off signal b output at detent positions is not specified rk203 ec20a n n 4 j [ f . f u b m 4 i b g u 5 z q f circuit diagramrk203 2 3 1 rotary potentiometers slide potentiometers metal shaft insulated shaft knob operating ring type
339 the following parts are included with the product. the attached switch can be used with only encoder types. switch type momentary push switch contact arrangement single pole and single throwpush-on travelmm 1.50.5 operating force 42n operating life 20,000times electrical performance rating 0.5a 16v dc (1ma 5v dc min. rating) contact resistance 100m max. for initial period,200m max. after operating life. insulation resistance 10 0 m m i n . 2 5 0 v d c voltage proof 300v ac for 1 minute or 360v ac for 2s nut washer 11 m9 0.75 2 ?14 ?9.1 0.5 20mm size metal shaft type / switch specifications 20mm size metal shaft type / attached parts unit:mm rotary potentiometers slide potentiometers metal shaft insulated shaft knob operating ring type
312 list of varieties metal shaft potentiometers type 16mm size 20mm size 27mm size 50mm size rotary motor-driven series rk163 rk203/ec20a rk271 rk501 rk168 single-shaft number of resistor elements single/dual single single/dual/quad dual/quad dual/quad/5-ganged/6-ganged photo terminal mounting horizontal vertical horizontal fixing method of bushing bushing screw clamp operating temperature range ?10 to 70 rk203 ?40 to 85 ec20a ?30 to 80 ?10 to 70 operating life 15,000 cycles 30,000 cycles 15,000 cycles available for automotive use life cycle (availability) electrical performance total resistance k ? 5, 10, 20, 50, 100, 200 10 5, 10, 20, 50, 100, 250 10, 20, 50, 100 resistance taper 15a, 1b, 3b, 15c b 15 a , 3 b rated power 0 .1w 0.05w 15a 0.05w 0 .1w 0.05w residual resistance rQ10k 20 max. 10k?rQ50k 30 max. 50k?r3m nominal total resistance of 0 .1% o r l e s s % rQ10k 20 max. 10k?r50k 30 max. 50k?Qr nominal total resistance of 0 .1% o r l e s s % maximum attenuation volume control 5k?Qr 10k 7 0db min. 10k?Qr 50k 8 0db min. 50k?Qr100k 9 0db min. 10 0 k ?Qr 10 0 d b m i n . 5k?Qr 10k 7 0db min. 10k?Qr 50k 8 0db min. 50k?Qr100k 9 0db min. 100k?Qr 100db min. 12 0 d b m i n . 5k?Qr 10k 7 0db min. 10k?Qr 50k 8 0db min. 50k?Qr100k 9 0db min. 100k?Qr 100db min. gang error applicable to dual-unit parts for audio volume control purposes ?40db to 0db 3db max. ?70db to ?60db3db max. ?60db to 0db2db max. ?100db to 0db 2db max. ?60db to ?40db5db max. ?40db to 0db3db max. insulation resistance 100m min. 500v dc 10 m m i n . 2 5 0 v d c 100m min. 500v dc 10 0 m m i n . 2 5 0 v d c voltage proof 500v ac f o r 1m i n u t e 300v ac f o r 1m i n u t e 5 0 0 v a c f o r 1m i n u t e 300v ac f o r 1m i n u t e center-taps without mechanical performance detent without, center, 21, 31, 41 17 without, center, 21, 31, 41 without stopper strength 0.9 0.5 0.9 1. 5 0.9 push-pull strength 10 0 n m a x . 150n max. 10 0 n m a x . vibration 10 to 55 to 10hz/min., the amplitude is 1.5mm for all the frequencies, in the 3 direction of x, y and z for 2 hours respectively shaft style serrated type, flat type, slotted type flat type slotted type, flat type slotted type flat type terminal style insertion, lead insertion attached switch ec20a: momentary push switch page 332 337 340 344 346 metal shaft potentiometers soldering conditions ???????????????????????????????????????? 349 potentiometers cautions ???????????????????????????????????????????????????? 427 potentiometers measurement and test methods ???????????????????????????????????????? 429 potentiometers resistance taper ???????????????????????????????????????????????? 431 note indicates applicability to some products in the series. rotary potentiometers slide potentiometers metal shaft insulated shaft knob operating ring type
349 reference for manual soldering example of reflow soldering condition reference for dip soldering 300 200 100 a b c time (s) g max. f max. h max. e max. room temperature temperature (?c ) pre-heating d series tip temperature soldering time no. of solders rk09l, rk097 350 max. 3s max. 1 time rk203 300 max. 3s max. 1 time rk119 3 5 0 10 3 s 1 time rk271 350 max. 5s max. 1 time rk501 3 5 0 10 5 s 1 time rk163 350 max. 5s max. 1 time rk168 potentiometer terminal 300 max. 3s max. 1 time motor terminal 350 max. 2s max. 1 time series preheating dip soldering no. of solders soldering surface temperature heating time soldering temperature soldering time rk09l, rk097, rk203 10 0 m a x . 2 min. max. 2605 5 1s 2 time max. rk501 12 0 10 2 min. max. 2605 5 1s 2 time +1 0 series a b c d e f g h no. of reflows rk119 260 230 18 0 15 0 2 min. 3s 40s 4 min. 2 time max. 1. when using an infrared reflow oven, solder may sometimes not be applied. be sure to use a hot air reflow oven or at type that uses infrared rays in combination with hot air. 2. the temperatures given above are the maximum temperatures at the terminals of the potentiometer when employing a hot air reflow method. the temperature of the pc board an d the surface temperature of the potentiometer may vary greatly depending on the pc board material, its size and thickness. ensure that the surface temperature of the potentiometer does not rise to 250 or greater. 3. conditions vary to some extent depending on the type of reflow bath used. be sure to give due consideration to this prior to use. notes temperature pro?le +1 0 metal shaft potentiometers / soldering conditions rotary potentiometers slide potentiometers metal shaft insulated shaft knob operating ring type
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