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Rotary encoders RE12

●To buy this product, please go to the following Online Web stores.
To the Rotary encoders  “RE12 series” page on the DigiKey online shop
To the Rotary encoders “RE12 series” page on the Chip1stop online shop
To the Rotary encoders “RE12 series” page on the Mouser online shop

Small size, high resolution and low cost

  • φ12 mm, High resolution up to 300 P/R
  • Cost effective
  • Two bearing types to choose from;
    Sleeve bearing or ball bearing
  • Low torque, low inertia
  • RoHS compliant

PART NUMBER DESIGNATION

RE12A-100-100-1

Series name

Bearing

A:Ball bearing
C:Sleeve bearing

Resolution (P/R)

100, 200, 300

Output phase:“A”

Input voltage : 5 V

No AMP

Output connection

1:Cable wire

LIST OF PART NUMBERS

Part numberBearingResolution
RE12A-100-100-1 Ball Bearing 100 P/R
RE12A-200-100-1 Ball Bearing 200 P/R
RE12A-300-100-1 Ball Bearing 300 P/R
RE12C-100-100-1 Sleeve Bearing 100 P/R
RE12C-200-100-1 Sleeve Bearing 200 P/R
RE12C-300-100-1 Sleeve Bearing 300 P/R

ELECTRICAL CHARACTERISTICS

Resolution100・200 P/R300 P/R
Photo-sensor maximum current 50 mA maximum (at 25 °C)
Output wave form Quasi-sinusoidal
Output signal ※1 150 mVp-p minimum 100 mVp-p minimum
Output signal
amplitude variation ※2 
40 % maximum 50 % maximum
Light source LED

※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)

⦿MEASUREMENT CIRCUIT

Mechanical characteristics

Starting torqueBall bearing 0.05 mN·m {0.5 gf·cm} maximum
Sleeve bearing 0.4 mN·m {4 gf·cm} maximum
Inertia 0.01 g·cmmaximum
Shaft loadingRadial 1.96 N {200 gf} maximum
Axial 4.9 N {500 gf} maximum
Net weight Approx. 10 g

Environmental characteristics

Operating temp. range −10 ~ 50 °C
Storage temp.range −20 ~ 80 °C
Protection grade IP40

Output signal level & Amplitude variation

⦿ Criteria
項目100・200 P/R300 P/RMeasurement point
Output signal level S min ≧ 0.13 V S min ≧ 0.08 V CP1 in ‘MEASUREMENT CIRCUIT’
Amplitude variation (S max / S min – 1) × 100 ≦ 45 % (S max / S min – 1) × 100 ≦ 55 % CP2 in ‘MEASUREMENT CIRCUIT’
⦿ MEASUREMENT CIRCUIT

RELIABILITY TEST

Test itemTest conditions
VibrationPower OFF Amplitude : 1.52 mm or 98.1 m/s2(10 G) whichever is smaller.
10 ~ 500 Hz excursion 5 min/cycle, 1 hour each for X, Y, Z, directions.
ShockPower OFF 1 time each in 6 directions (X, Y, Z) at 490 m/s2 (50 G), 11 ms.
High temperature
exposure
Power OFF 80 °C  96 h (To be measured after leaving samples for 1 h at normal temperature and humidity after the test.)
Power ON 50 °C  96 h
Low temperature
exposure
Power OFF − 20 °C  96 h
Power ON − 10 °C 96 h
HumidityPower OFF 40 °C  Relative humidity 90 〜 95 %   96 h
(To be measured after wiping out moisture and leaving samples for 1 h at normal temperature and humidity after the test.)
Thermal shockPower OFF 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.)
80 °C 1 h、-20 °C 1 h

OUTLINE DIMENSIONS

Unless otherwise specified, tolerance : ± 0.4 (Unit : mm)

 

INTERNAL CIRCUIT

MEASUREMENT CIRCUIT

●The above contents and descriptions are subject to change without notice. 

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