Product Details Portlet

EE-SX398/SX498 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-SX398)
  • Light ON model (EE-SX498)
RoHS Compliant
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
EmitterForward currentIF50 mA
(see note 1)
Reverse voltageVR4 V
DetectorPower supply voltageVCC16 V
Output voltageVOUT28 V
Output currentIOUT16 mA
Permissible output dissipationPOUT250 mW
(see note 1)
Ambient temperatureOperatingTopr-40ºC to 75ºC
StorageTstg-40ºC to 85ºC
Soldering temperatureTsol260ºC
(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)
EmitterForward voltageVF1.2 V typ., 1.5 V max.IF = 20 mA
Reverse currentIR0.01 μA typ., 10 μA max.VR = 4 V
Peak emission wavelengthλP940 nm typ.IF = 20 mA
DetectorLow-level output voltageVOL0.12 V typ., 0.4 V max.VCC = 4.5 to 16 V, IOL = 16 mA, IF = 0 mA (EE-SX398), IF = 5 mA (EE-SX498)
High-level output voltageVOH15 V min.VCC = 16 V, RL = 1 kΩ, IF = 5 mA (EE-SX398), IF = 0 mA (EE-SX498)
Current consumptionICC3.2 mA typ., 10 mA max.VCC = 16 V
Peak spectral sensitivity wavelengthλP870 nm typ.VCC = 4.5 to 16 V
LED current when output is OFFIFT2 mA typ., 5 mA max.VCC = 4.5 to 16 V
LED current when output is ON
HysteresisΔH15% typ.VCC = 4.5 to 16 V (see note 1)
Response frequencyf3 kHz min.VCC = 4.5 to 16 V, IF = 15 mA, IOL = 16 mA (see note 2)
Response delay timetPLH (tPHL)3 μs typ.VCC = 4.5 to 16 V, IF = 15 mA, IOL = 16 mA (see note 3)
Response delay timetPHL (tPLH)20 μs typ.VCC = 4.5 to 16 V, IF = 15 mA, IOL = 16 mA (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-SX498.
Note: All units are in millimeters unless otherwise indicated.


Terminal No.
VPower supply (Vcc)
OOutput (OUT)
GGround (GND)

Unless otherwise specified, the tolerances are as shown below.
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