
ESD WARNING: NORMAL HANDLING PRECAUTIONS SHOULD BE TAKEN TO AVOID STATIC
DISCHARGE.
High Temperature 140
Three Channel Optical
Incremental Encoder Modules
Technical Data
HEDT-9040
HEDT-9140
Features
-40
°
C to 140
°
C Operating
Temperature
Two Channel Quadrature
Output with Index Pulse
Suitable for Automotive
Applications
Resolution up to 1024
Counts per Revolution
Low Cost
Easy to Mount
No Signal Adjustment
Required
Small Size
Description
The HEDT-9040 and HEDT-9140
are high temperature three
channel optical incremental
encoder modules. When used with
a codewheel, these low cost
modules detect rotary position.
Each module consists of a lensed
LED source and a detector IC
enclosed in a small plastic
package. Due to a highly
collimated light source and a
unique photodetector array, these
modules provide the same high
performance found in the HEDS-
9040/9140 three channel
encoders.
Package Dimensions
°
C
26.67 (1.05)
15.2
(0.60)
H
X
CL
17.27
(0.680)
20.96
(0.825)
1.85 (0.073)
8.64 (0.340)
REF.
ALIGNING RECESS
2.44/2.41 DIA.
(0.096/0.095)
2.16 (0.085)
DEEP
1.02 ± 0.10
(0.040 ± 0.004)
5.1 (0.20)
Y
OPTION CODE
0.63 (0.025)
SQR. TYP.
2.54 (0.100) TYP.
DATE CODE
1.0 (0.04)
3.73 ± 0.05
(0.147 ± 0.002)
2.67 (0.105) DIA.
MOUNTING THRU
HOLE 2 PLACES
2.44/2.41 X 2.79
(0.096/0.095 X 0.110)
2.16 (0.085) DEEP
OPTICAL CENTER
1.52 (0.060)
20.8
(0.82)
11.7
(0.46)
8.6 (0.34)
1.78 ± 0.10
(0.070 ± 0.004)
2.92 ± 0.10
(0.115 ± 0.004)
10.16
(0.400)
5.46 ± 0.10
(0.215 ± 0.004)
OPTICAL
CENTER LINE
2.54
(0.100)
2.21
(0.087)
5.8
(0.23)
6.35 (0.250) REF.
4.11 (0.162)
OPTICAL
CENTER
45°
8.81
(0.347)
11.9
(0.47)
4.75 ± 0.01
(0.187 ± 0.004)
2.9
(0.11)
1.8
(0.07)
6.9 (0.27)
V
C
G
5
4
C
3
2
1
SIDE A
SIDE B
TYPICAL DIMENSIONS IN
MILLIMETERS AND (INCHES)