QTR-HD-01A Reflectance Sensor: 1-Channel, 5mm Wide, Analog Output

Pololu item #: 4201 166 in stock
Brand: Pololu
Status: Active and Preferred 
RoHS 3 compliant
 Free add-on shipping in USA 
This item could qualify for free shipping Free shipping in USA over $40 

Price break Unit price (US$)
1 1.79
5 1.65
25 1.52
100 1.39


backorders allowed

sensors size
(mm)
output max current optimal
range
LED board
1 5.0 × 20.0 analog 30 mA 32 mA 5 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 traditional-style QTR sensor without 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: 5.0 × 20.0 × 3.9 mm
Weight: 0.25 g

General specifications

Maximum range: 30 mm
Optimal range: 5 mm
Minimum operating voltage: 2.9 V
Maximum operating voltage: 5.5 V
LED current: 30 mA1
Peak wavelength: 940 nm
Maximum current draw: 32 mA2
Sensor type: QTR
Sensor count: 1
Output type: A (analog voltages)

Identifying markings

PCB dev codes: irs21a3
Other PCB markings: 0J113573

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.

Related Categories

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