298 ec28a 28mm size ring type a low-profile unit with 4mm height and good operation feel typical specifications items specifications rating 10ma 5v dc operating life 50,000 cycles operating temperature range ?40 to 85 refer to p.307 for soldering conditions. product line 30 18 15 18 product no. actuator length mm number of detent number of pulse 400 800 15 detent torque mn?m 12 7 2 0 10 12 7 2 0 10 ec28a1550401 ec28a1850402 75 ec28a1520401 EC28A1560401 ec28a1870401 minimum order unit pcs. japan export dimensions unit:mm style 3-7.5 3-3 3-4 ? 28 3.5 ? 21.6 15 4 1.5 2.5 3-r10.2 15 10.75 a b c 120$ 4-2.5 3-3 120$ 120$ ?18 ? 17 pc board mounting hole dimensions (viewed from mounting side) 2.6 16 1.6 28.9 5 23 3-?1 hole 2-?1.5 hole c b a 5v dc rr terminal b terminal a terminal c encoder test circuit tt v 1 v 2 5v on on off output waveform sliding direction t : masking time to avoid chattering . f b t v s f n f o u d p o e j u j p o 3 p u b u j p o t q f f e ?/s a signal b signal on on off off detent stability position cw direction a signal b signal on on off off detent stability position cw direction sliding noise v 1 =v 2 = 2.5v max. at r = 5k chattering : 5ms max. bounce : 5ms max. output wave ec28a15 *signal a and signal b output at detent positions cannot be specified. ec28a18 number of packages pcs. export package measurements mm 1 case /japan 1 case /export packing 400 800 366509287 packing specifications tray encoders metal shaft insulated shaft ring type hollow shaft
type ring type 21mm size 28mm size 35mm size series ec21a ec21c ec28a ec35a ec35ah ec35b photo output incremental two phase a and b incremental three phase a, b and c incremental two phase a and b / self-return switch shaft types ring type number of pulse / number of detent 9 /18 15 / 3 0 15 / 3 0 15 / 3 0 18 /18 15 / 3 0 6a b c /18 10a b c / 3 0 15 / 3 0 dimensions mm w 21. 6 22 28 35 35 d 21. 6 29 37 h 4 4.5 12 .1 operating temperature range ?40 to 85 operating life 50,000 cycles 30,000 cycles automotive use life cycle (availability) electrical performance rating 10 m a 5 v d c max./min. operating currentresistive load 10ma / 1ma insulation resistance 10 0 m m i n . 2 5 0 v d c voltage proof 3 0 0 v a c f o r 1m i n u t e or 360v ac for 2s 3 0 0 v a c f o r 1m i n u t e or 360v ac for 1s 300v ac for 1minute or 360v ac for 2s 3 0 0 v a c f o r 1m i n u t e or 360v ac for 1s mechanical performance detent torque 75mn?m 167 m n?m 178mn?m initial 12 7 ? 4 mn?m 75mn?m 12 7 m n?m 2 0 10 m n ? m 187 m n?m 12 5 m n?m 187 m n?m 3 0 15 m n ? m 2 0 10 m n ? m push-pull strength push 10 0 n pull 10 0 n shaft configuration ring type terminal type insertion switch specifications switch type self-return switch contact arrangement single pole and double throw travel mm 2.80.5 operating force n 3 . 8 1. 5 switch on position 155 rotational torque 4 0 2 5 m n?m rating 10 m a 5 v d c contact resistance 200m max. operating life 15,000 cycles page 296 298 299 300 302 encoders soldering conditions ????????????????????????????????????????????????? 307 encoders cautions ???????????????????????????????????????????????????????? 308 note indicates applicability to all products in the series. after reflow 265 new encoders metal shaft ring type insulated shaft hollow shaft
307 soldering surfacetemperature soldering temperature heating time soldering time no. of solders ec10e, ec12d, ec12e, em11b ec45a ec40a em20b ec09e, ec11b, ec111, ec11e, ec11g, ec11k, ec18a, ec21a, ec28a, ec35a, ec35ah, ec35b, ec50a, ec60b series 10 0 m a x . 2605 2 min. max. 5 1s 2 time max. 10 0 m a x . 10 0 m a x . 11 0 m a x . 80 max. 2605 260 max. 260 max. 260 max. 1 min. max. 2 min. max. 1 min. max. 1 min. max. 3 1s 5s max. 10 s m a x . 3s max. 2 time max. 2 time max. 1 time 2 time max. preheating dip soldering reference for dip soldering example of reflow soldering condition reference for manual soldering ec05e ec21c ec11j series 260 230 18 0 15 0 2 min. max. 3s 40s 4 min. max. 2 time max. 250 min. 230 to 245 230 min. 220 18 0 200 15 0 15 0 60s to 120s 60s to 120s ` ` 30s to 40s 25s to 60s ` 300 max. 2 time max. 1 time max. a b c d e f g h no. of reflows temperature profile 1. when using an infrared reflow oven, solder may sometimes not be ap plied. be sure to use a hot air reflow oven or a type that uses infrared rays in combination with hot air. 2. the temperatures given above are the maximum temperatures at the terminals of the encoder when employing a hot air reflow method. the temperature of the pc board and the surface temperature of the encoder may vary greatly depending on the pc board material, its siz e and thickness. ensure that the surface temperature of the encoder 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. ?? 300 200 100 a b c time (s) g max. f max. h max. e max. room temperature temperature (?c ) pre-heating d encoders soldering conditions 3 s ec11j ec05e, ec09e, ec10e, ec111, ec11b, ec11e, ec11g, ec11k, ec12d, ec12e, ec18a, ec21a, ec28a, ec35a, ec35ah, ec35b, ec40a, ec45a, ec50a, ec60b, em11b, em20b, ec21c series 350 max. 3s max. 1 time 3 5 0 10 2 time tip temperature soldering time no. of solders 1 0 encoders metal shaft insulated shaft ring type hollow shaft
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