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˙ FEATURES /g79/g3φ12 mm, High resolution up to 300 P/R /g79/g3Cost effective /g79/g3Two bearing types to choose from; Sleeve bearing or ball bearing /g79/g3Low torque, low inertia /g79/g3RoHS compliant ˙ PART NUMBER DESIGNATION RE12 A – 100 – 100 – 1 Series name Output connection ɿCable wire Output phase “A”, Input voltage : 5 V, No AMP Resolution (P/R) Bearing "ɿBall bearing $ɿSleeve bearing Bearing Resolution Part number ˙ LIST OF PART NUMBERS Ball Bearing

100 P/R

200 P/R

300 P/R

˞Verify the above part numbers when placing orders. RoHS compliant

Photo-sensor maximum current Item Resolution Output wave form Output signal Output signal amplitude variation Light source ˙STANDARD SPECIFICATIONS 50 mA maximum (at 25 °C) s02 02 Quasi-sinusoidal 150 mVp-p minimum 100 mVp-p minimum 40 % maximum 50 % maximum LED /g79/g3ELECTRICAL CHARACTERISTICS /g79/g3Mechanical characteristics 0.05 mN·m {0.5 gf·cm} maximum 0.4 mN·m {4 gf·cm} maximum 0.01 g·cm maximum

1.96 N {200 gf} maximum

4.9 N {500 gf} maximum

Approx. 10 g˞2 ˞1 : Measured at CP1 as per the Fig. A of ‘MEASUREMENT CIRCUIT’ on the following page. (3 kHz) ˞2 : Measured at CP2 as per the Fig. A of ‘MEASUREMENT CIRCUIT’ on the following page. (3 kHz) /g79/g3Output signal level & Amplitude variation ˞Output signal levelɿ Amplitude variationɿ Smin ʾ 0.15 V, (Smax/Smin-1) × 100 ʽ 40 % (Smax/Smin-1) × 100 ʽ 50 % Smin ʾ 0.10 V S min S m ax 100, 200 P/R 100, 200 P/R Operating temp. range Storage temp.range /g79/g3Environmental characteristics −10 ~ 50 °C −20 ~ 80 °C Protection grade IP40 Test item ˙RELIABILITY TEST The output shall satisfy the criteria below after the following tests. Test conditions Amplitude : 1.52 mm or 98.1 m/s (10 G) whichever is smaller. 10 ~ 500 Hz excursion 5 min/cycle, 1 hour each for X, Y, Z, directions. 1 time each in 6 directions (X, Y, Z) at 490 m/s (50 G), 11 ms. 80 °C 96 h (To be measured after leaving samples for 1 h at normal temperature and humidity after the test.) 50 °C 96 h − 20 °C 96 h − 10 °C 96 h °CɹRelative humidity ʙ ɹI (To be measured after wiping out moisture and leaving samples for 1 h at normal temperature and humidity after the test.) To be done 10 cycles with the following condition (To be measured after leaving samples for 1 h at normal temperature and humidity after the test.) °CɹIɺ− °CɹI /g79/g3Criteria Output signal level Amplitude variation s02 S min ʾ 0.13 V (S max / S min – 1) × 100 ʽ 45 %

300 P/R Measurement point

S min ʾ 0.08 V (S max / S min – 1) × 100 ʽ 55 % CP1 in ‘MEASUREMENT CIRCUIT’ CP2 in ‘MEASUREMENT CIRCUIT’ RE12 OPTICAL ENCODERS

˙ OUTLINE DIMENSIONS Unless otherwise specified, tolerance : ± 0.4 (Unit : mm) ˙ INTERNAL CIRCUIT ˙MEASUREMENT CIRCUIT 8.5 ±0.2 4.8 2.4 φ φ 2 –0.01 2 – M2 D = 3.0 min. AWG28 100 +20 Anode (Green) Colletor (Red) Cathode (Black) Emitter (White) +5 V +2.5 V AMP 0 V CP1 CP2 3 kΩ 33 kΩ 10 kΩ 33 kΩ 0.033 μF 0.1 μF 180 Ω Frequency characteristics : 3 kHz (at constant speed) Fig. A