Product Details Portlet

EE-SX301/-SX401 Photomicrosensor (Transmissive)


  • Incorporates an IC chip with a built-in detector element and amplifier.
  • Incorporates a detector element with a built-in temperature compensation circuit.
  • A wide supply voltage range: 4.5 to 16 VDC
  • Directly connects with C-MOS and TTL.
  • High resolution with a 0.5-mm-wide sensing aperture.
  • Dark ON model (EE-SX301)
  • Light ON model (EE-SX401)

Last order Date:Mar.31,2021

RoHS Compliant
Model 2D/3D CAD ECAD(Download symbol,FootPrint,3DCAD)
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EE-SX301 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
Emitter Forward current IF 50mA (see note 1)
Reverse voltage VR 4V
Detector Power supply voltage VCC 16V
Output voltage VOUT 28V
Output current IOUT 16mA
Permissible output
POUT 250mW (see note 1)
Ambient temperature Operating Topr -40ºC to 75ºC
Storage Tstg -40ºC to 85ºC
Soldering temperature Tsol 260ºC (see note 2)
Note: 1. Refer to the temperature rating chart if the ambient temperature exceeds 25ºC.
  2. Complete soldering within 10 seconds.

Electrical and Optical Characteristics (Ta = 25ºC)
Emitter Forward voltage VF 1.2 V typ.,
1.5 V max.
IF = 20mA
Reverse current IR 0.01µA typ.,
10 µA max.
VR = 4V
Peak emission wavelength λP 940 nm typ. IF = 20mA
Detector Low-level output voltage VOL 0.12 V typ.,
0.4 V max.
VCC = 4.5 to 16 V,
IOL = 16 mA,
IF = 0mA
IF = 8mA
High-level output voltage VOH 15 V min. VCC = 16 V,
RL = 1kΩ,
IF = 8mA
IF = 0mA
Current consumption ICC 3.2 mA typ.,
10 mA max.
VCC = 16 V
Peak spectral
sensitivity wavelength
λP 870 nm typ. VCC = 4.5 to 16 V
LED current
when output is OFF
IFT 3 mA typ.,
8 mA max.
VCC = 4.5 to 16 V
LED current
when output is ON
Hysteresis ΔH 15% typ. VCC = 4.5 to 16 V
(see note 1)
Response frequency f 3 kHz min. VCC = 4.5 to 16 V,
IF = 15 mA,
IOL = 16mA
(see note 2)
Response delay time tPLH(tPHL) 3 µs typ. VCC = 4.5 to 16 V,
IF = 15 mA,
IOL = 16mA
(see note 3)
Response delay time tPHL(tPLH) 20 µs typ. VCC = 4.5 to 16 V,
IF = 15 mA,
IOL = 16mA
(see note 3)
Note : 1. Hysteresis denotes the difference in forward LED current value, expressed in percentage, calculated from the respective forward LED currents when the photo IC in turned from ON to OFF and when the photo IC in turned from OFF to ON.
  2. The value of the response frequency is measured by rotating the disk as shown below.
  3. The following illustrations show the definition of response delay time. The value in the parentheses applies to the EE-SX401.
Note: All units are in millimeters unless otherwise indicated.
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.
Dimensions Tolerance
3 mm max. ± 0.3
3 < mm ≤ 6 ± 0.375
6 < mm ≤ 10 ± 0.45
10 < mm ≤ 18 ± 0.55
18 < mm ≤ 30 ± 0.65