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

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

26.67 (1.05)

15.2

(0.60)

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)

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)

SIDE A

SIDE B

TYPICAL DIMENSIONS IN

MILLIMETERS AND (INCHES)