RE20F

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˙ FEATURES /g79/g3Compact, dia.: 20 mm /g79/g3Low torque, low inertia /g79/g3RoHS compliant ˙PART NUMBER DESIGNATION RE20F - 100 - 100 Series name Output phase 1ɿ“A” only 2ɿ“A” & “B” (100 P/R only)Resolution (P/R) 100, 300 Resolution Item Output phases Part number ˙ LIST OF PART NUMBERS 100 (P/R) 300 (P/R) 100 (P/R) RE20F-100-100 RE20F-300-100 RE20F-100-200 “A” only ˞Verify the above part numbers when placing orders. Starting torque Inertia Shaft loading (When mounting) Radial Axial Net weight Operating temp. range Storage temp. range Protection grade Item Output phases Photo-sensor maximum current Output wave form Output phases Resolution Phase difference of outputs A & B Maximum frequency response Output signal Output signal amplitude variation Light source ˙ STANDARD SPECIFICATIONS 45 mA maximum (at 25 °C) Quasi-sinusoidal A A, B 100, 300 100 ——— 90° ± 45° ——— 12 kHz 150 mVp-p minimum 1 Vp-p minimum 40 % maximum LED /g79/g3Electrical characteristics /g79/g3Mechanical characteristics 0.05 mN·m {0.5 gf·cm} maximum 0.2 g·cm maximum

1.96 N {200 gf} maximum

4.9 N {500 gf} maximum

Approx. 15 g /g79/g3Environmental characteristics 0 ~ 50 °C − 20 ~ 80 °C IP40 ˞ɹMeasured at CP1 in the fig.A of ‘MEASUREMENT CIRCUIT’ on the following page. ˞ɹOne phase only : Measured at CP2 in the fig.A of ‘MEASUREMENT CIRCUIT’ on the following page. RoHS compliant

16±0.1 Epoxy AWG26 2 – M 2 D = 3.5 min. 80 min. φ 2φ – 0.01 CW CCW Output “A” Output “B” 1/2T 1/2T 1/4T±1/8T T Vibration Power OFF Power OFF Power OFF Power ON Power OFF Power ON Power OFF Power OFF Shock High temperature exposure Low temperature exposure Humidity Thermal shock ˙ OUTLINE DIMENSIONS Unless otherwise specified, tolerance: ± 0.4 (Unit: mm) ˙ OUTPUT /g79/g3RE20F Test item ˙ RELIABILITY TEST The output wave form and starting torque shall satisfy the STANDARD SPECIFICATIONS 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 0 °C 96 h °C Relative 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.) °C Iɺ− °C I RE20F OPTICAL ENCODERS

LED anode (Elect.wire: Green) Phot-tr. collector (Elect.wire: Red) Phot-tr. emitter (Elect.wire: White) LED cathode (Elect.wire: Black) LED anode (Elect.wire: Green) Phot-tr. collector (Elect.wire: Red) Phot-tr. emitter (Elect.wire: White) Phot-tr. emitter (Elect.wire: Brown) LED cathode (Elect.wire: Black) (Green) (Red) (White) (Brown) (Black) 82 Ω +5 V Output “A” Output “B” 0 V 2 kΩmax.2 kΩmax. +5 V 120 Ω CP1 3 kΩ 0.003ЖF 4.7 kΩ 1/2 Vcc 0.1ЖF 10 kΩ CP2 220 kΩ Amp. +5 V Output “A” Output “B” 0 V Comp. R 2 kΩ (Green) (Red) B (Brown) (Black) A (White) 82 Ω 1.8 kΩ 560 Ω 2 kΩ ʵ ʴ Circuit identical to output “A” ˙RATINGS /g79/g3LED /g79/g3Photo-sensor Maximum current 45 mA 4 V 75 mW −1.4 mW/°C Reverse voltage Power dissipation (PD) Temp. derating of PD (25 ~ 60 °C) Collector current 20 mA 20 V 5 V 75 mW −1.0 mW/°C Collector to emitter voltage (forward) Collector to emitter voltage (reverse) Collector dissipation (PD) Temp. derating of PD (25 ~ 60 °C) (at 25 °C) (at 25 °C) ˙INTERNAL CIRCUIT ˙MEASUREMENT CIRCUIT /g79/g3/g20/g3/g83/g75/g68/g86/g72/g3/g20/g19/g19/g3/g135/g3/g22/g19/g19/g3/g51/g18/g53 /g79/g3/g20/g3/g83/g75/g68/g86/g72/g3/g20/g19/g19/g3/g135/g3/g22/g19/g19/g3/g51/g18/g53 /g79/g3/g21/g3/g83/g75/g68/g86/g72/g86/g3/g20/g19/g19/g3/g51/g18/g53 /g79/g3/g21/g3/g83/g75/g68/g86/g72/g86/g3/g20/g19/g19/g3/g51/g18/g53 Frequency characteristics: 3 kHz (at constant speed) RE20F OPTICAL ENCODERS ˙EXTERNAL SCHEMATICS /g79/g3/g21/g3/g83/g75/g68/g86/g72/g3/g20/g19/g19/g3/g51/g18/g53 Fig. A