Data Sheet
 P 
 11.65
459
 2.50
98
 B   B 
Board dimensions (top view)
1
Scale 2:1
Connector callouts (bottom view)
2
Scale 2:1
Profile
3
Scale 2:1
QTRX/QTRXL sensor
4
Scale 2:1
  2.0
80
 1.02
40
Item 
numbers*
W 
(width)
P 
(pitch)
N 
(number of sensors)
B
C 
(hole count)
4303, 4403, 
4503, 4603
13.0 
[512]
4.00 
[157]
3
1.42 
[56]
7
4342, 4442, 
4542, 4642
8.00 
[315]
2
4304, 4404, 
4504, 4604
17.0 
[669]
4.00 
[157]
4
3.42 
[135]
8
4305, 4405, 
4505, 4605
21.0 
[827]
4.00 
[157]
5
4.15 
[163]
9
4343, 4443, 
4543, 4643
8.00 
[315]
3
4306, 4406, 
4506, 4606
25.0 
[984]
4.00 
[157]
6
6.15 
[242]
10
4307, 4407, 
4507, 4607
29.0 
[1142]
4.00 
[157]
7
6.88 
[271]
11
4344, 4444, 
4544, 4644
8.00 
[315]
4
4308, 4408, 
4508, 4608
33.0 
[1299]
4.00 
[157]
8
8.88 
[350]
12
4309, 4409, 
4509, 4609
37.0 
[1457]
4.00 
[157]
9
9.61 
[378]
13
4345, 4445, 
4545, 4645
8.00 
[315]
5
4311, 4411, 
4511, 4611
45.0 
[1772]
4.00 
[157]
11
12.34 
[486]
15
4346, 4446, 
4546, 4646
8.00 
[315]
6
4313, 4413, 
4513, 4613
53.0 
[2087]
4.00 
[157]
13
15.07 
[593]
17
4347, 4447, 
4547,4647
8.00 
[315]
7
4315, 4415, 
4515, 4615
61.0 
[2402]
4.00 
[157]
15
17.80 
[701]
19
4348, 4448, 
4548,4648
8.00 
[315]
8
4317, 4417, 
4517, 4617
69.0 
[2717]
4.00 
[157]
17
20.53 
[808]
21
4349, 4449, 
4549, 4649
8.00 
[315]
9
4319, 4419, 
4519, 4619
77.0 
[3031]
4.00 
[157]
19
23.26 
[916]
23
4350, 4450, 
4550, 4650
8.00 
[315]
10
1.
1.
*Some items available by special order only.
Drawn in same 
orientation as 
in view 1.
  20.0
787
2×
2.18
86
  2.5
98
 W 
  2.5
98
  2.5
98
R
 https://www.pololu.com/category/123
Name:
Units:
Drawing date:
mm
[mil]
Material:
© 2018 Pololu Corporation
mixed
Item number:
QTRX/QTRXL Reflectance Sensor 
Array
22 August 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:
irs23a-irs39a
C×
1.02
40
Emitter
Phototransistor
 B   B 
 P 
 11.65
459
 2.50
98




