Data Sheet
 2.50
98
 P 
 12.15
478
 1.27
50
   38.37
1511
    38.37
1511
Board dimensions (top view)
1
Scale 1:1
Connector callouts (bottom view)
2
Scale 1:1
3
Profile
Scale 1:1
QTR sensor
4
Scale 2:1
Isometric view
5
Scale 1:1
  28.0
1102
    28.0
1102
   2.5
98
  125.0
4921
4×
2.18
86
  64.0
2520
  2.5
98
  16.5
650
 1.27
50
Item 
numbers*
P 
(pitch)
N 
(number of sensors)
4131, 4231
4.00 
[157]
31
4156, 4256
8.00 
[315]
16
1.
1.
*Some items available by special order only.
R
 https://www.pololu.com/category/123
Name:
Units:
Drawing date:
mm
[mil]
Material:
© 2018 Pololu Corporation
mixed
Item number:
QTR Reflectance Sensor Array
14 September 2018
see table
Intended for #2 and M2 screws.1.
Grid lines indicate 2.54 mm [100 mil] spacing.2.
To get the specified scale, select 100% in print settings.3.
Drill location tolerance: ±0.1 [±5].4.
Board edge tolerance: ±0.3 [±10].5.
Dev code:
irs51a
 1.57
62
  1.5
59
Emitter
Phototransistor










