QTRX-MD-01RC Reflectance Sensor: 1-Channel, 7.5mm Wide, RC Output, Low Current

Pololu item #: 4341
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant

Price break Unit price (US$)
1 2.89
5 2.66
25 2.45


backorders allowed

sensors size
(mm)
output max current optimal
range
LED board
1 7.5 × 20.0 RC (digital) 3.5 mA 5 mA 10 mm

This IR LED/phototransistor pair is great for precisely identifying changes in reflectance (like line detection). It operates from 2.9 V to 5.5 V and offers dimmable brightness control independent of the supply voltage. In general, the closer the object, the higher the contrast between light and dark readings, but high-reflectance objects are generally detectable out to around 30 mm. This version features a high-performance, low-current QTRX sensor with lenses.

Alternatives available with variations in these parameter(s): sensor type sensor count sensor pitch output type Select variant…

 Description Specs (14) Pictures (7) Resources (6) FAQs (0) On the blog (1) 

Dimensions

Size: 7.5 × 20.0 × 3.0 mm
Weight: 0.35 g

General specifications

Maximum range: 30 mm
Optimal range: 10 mm
Minimum operating voltage: 2.9 V
Maximum operating voltage: 5.5 V
LED current: 3.5 mA1
Peak wavelength: 940 nm
Maximum current draw: 5 mA2
Sensor type: QTRX
Sensor count: 1
Output type: RC (measurable by digital I/O)

Identifying markings

PCB dev codes: irs21k3
Other PCB markings: 0J113103

Notes:

1
Can be dynamically reduced to any of 32 available dimming levels.
2
With all LEDs on at max brightness setting.
3
Note: this does not differentiate between the A and RC output types.

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