Product Details Portlet

EE-SY310/EE-SY410 Photomicrosensor (Reflective)

  • Incorporates an IC chip with a built-in detector element and amplifier.
  • Incorporates a detector element with a built-in temperature compensation circuit.
  • Compact reflective model with a molded housing.
  • A wide supply voltage range: 4.5 to 16 VDC
  • Directly connects with C-MOS and TTL.
  • Dark ON model (EE-SY310)
  • Light ON model (EE-SY410)
  • Recommended sensing distance = 5.0 mm
RoHS Compliant
Model 2D/3D CAD ECAD(Download symbol,FootPrint,3DCAD)
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EE-SY310 Download Download
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(*) Ultra Librarian uniquely created ECAD data based on the information provided by OMRON. Please note that OMRON does not guarantee the accuracy, concurrence or completeness of ECAD data.
Note: This web page provides an excerpt from a datasheet. Refer to Product Datasheet and other applicable documents for more information.
Absolute Maximum Ratings (Ta = 25ºC)
Rated value
Forward current
IF 50 mA (see note 1)
Reverse voltage
VR 4 V
Pulse forward current
IFP 1 A (see note 2)
Power supply voltage
VCC 16 V
Output voltage
Output current
IOUT 16 mA
Permissible output dissipation
POUT 250 mW (see note 1)
Ambient temperature
Topr -40ºC to 75ºC
Tstg -40ºC to 85ºC
Soldering temperature
Tsol 260ºC (see note 3)
Note: 1. Refer to the temperature rating chart if the ambient temperature exceeds 25ºC.

2. The pulse width is 10 µs maximum with a frequency of 100 Hz.

3. Complete soldering within 10 seconds.

Electrical and Optical Characteristics (Ta = 25ºC)
Forward voltage
VF 1.2 V typ., 1.5 V max. IF=20 mA
Reverse current
IR 0.01 µA typ., 10 µA max. VR=4 V
Peak emission wavelength
λP 920 nm typ. IF=20 mA
Low-level output voltage
VOL 0.12 V typ., 0.4 V max. Vcc = 4.5 to 16 V, IOL = 16 mA,
without incident light (EE-SY310), with incident light (EE-SY410) (see notes 1 and 2)
High-level output voltage
VOH 15 V min. VCC = 16 V, RL = 1 kΩ,
with incident light (EE-SY310), without incident light (EE-SY410) (see notes 1 and 2)
Current consumption
ICC 3.2 mA typ., 10 mA max. VCC=16V
Peak spectral sensitivity wavelength
λP 870 nm typ. VCC=4.5 to 16V
LED current when output is OFF
IFT 6 mA typ., 15 mA max. VCC=4.5 to 16V
LED current when output is ON
ΔH 17% typ. VCC=4.5 to 16V
Response frequency
f 50 Hz min. VCC=4.5 to 16V,
Response delay time
3 µs typ. VCC=4.5 to 16V,
Response delay time
20 µs typ. VCC=4.5 to 16V,
Note: 1. "With incident light" denotes the condition whereby the light reflected by white paper with a reflection factor of 90% at a sensing distance of 5 mm is received by the photo IC when the forward current (IF) of the LED is 20 mA.
  2. Sensing object: White paper with a reflection factor of 90% at a sensing distance of 5 mm.
  3. Hysteresis denotes the difference in forward LED current value, expressed in percentage, calculated from the respective forward LED currents when the photo IC is turned from ON to OFF and when the photo IC is turned from OFF to ON.
  4. The value of the response frequency is measured by rotating the disk as shown below.
5. The following illustrations show the definition of response delay time. The value in the parentheses applies to the EE-SY410.
Note: All units are in millimeters unless otherwise indicated.

EE-SY310/-SY410 Dimensions1
Internal Circuit

Terminal No.
A Anode
K Cathode
V Power supply (VCC)
O Output (OUT)
G Ground (GND)

Unless otherwise specified, the tolerances are as shown below.
3 mm max. ±0.2
3 < mm ≤ 6 ±0.24
6 < mm ≤ 10 ±0.29
10 < mm ≤ 18 ±0.35
18 < mm ≤ 30 ±0.42