ENA1J-B28-M00128L Bourns Inc., ENA1J-B28-M00128L Datasheet - Page 2

• Manufacturer Part Number: ENA1J-B28-M00128L
• Description: Optical Encoder
• Manufacturer: Bourns Inc.
• Type: Rotary Encoderr

Specifications of ENA1J-B28-M00128L

• No. Of Channels: 2
• Rotational Speed Max: 3000rpm
• Supply Voltage Range: 4.75VDC To 5.25VDC
• Rotational Life Cycles: 10000000
• Torque Max: 1.5in-oz
• Pulses Per Revolution: 256
• Encoder Output: Square Wave Digital Pulse
• Sensor Supply Voltage: 4.75VDC To 5.25VDC
• Encoder Resolution: 128CPR
• Output Type: Square Wave Digital Pulse
• Rohs Compliant: Yes
• Connector Type: FRC Connector
• Encoder Type: Optical
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Additional Features
■
■
■
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
TERMINATION DIAGRAM
(.100)
(.375)
2.54
9.53
Axial Ribbon Cable Option
(.2497 + .000/ – .0003)
Dimensional Drawings
GROUND
CMOS and TTL compatible
Long life
Ball bearing option for high operating speed up to 3000 rpm
6.342 + .000/ – .0076
Bushing with Bracket
TYP.
Bushing Style A
EN - Rotary Optical Encoder
-
INDEX
N.C.
OR
3/8-32 UNEF
A
CHANNEL A
+
DIA.
Vcc
(.025)
.635
B
9.525
(.375)
CHANNEL B
(.4062 + .000/ – .002)
10.32 + .000/ – .0508
(.062)
1.57
SQ.
8.636
(.34 )
Radial Leads
(.2497 + .000/ – .0003)
(.375)
6.342 + .000/ – .0076
Optional
9.53
Bushing Style S
(Ball Bearing)
Bushing Style C
3/8-32 UNEF
18.5
(.73)
Radial Leads
DIA.
(.1247 + .000/ – .0003)
Optional
3.167 + .000/ – .0076
DIA.
(.86)
21.8
Servo Mount Style W (Ball Bearing)
1/4-32 UNEF
Radial Ribbon Cable Option
(.281 + .000/ – .002)
7.14 + .000/ – .0508
—
(.062)
1.57
(.062)
A
1.57
(.1247 + .000/ – .003)
(.375)
3.167 + .000/ – .0076
(.250)
6.35
9.53
+ B
Bushing Style T
(Ball Bearing)
Radial Leads
(.875 + .0005 / – .0050)
22.2 + .0127 / – .1270
DIA.
(.7500 ± .0005)
19.05 ± .0127
1/4-32 UNEF
(.062)
1.57
(.062)
1.57
DIA.
(.625)
15.88
DIA.
DIA.
(.1247 + .000/ – .003)
3.167 + .000/ – .0076
(.054)
DIA.
1.37
Anti-rotation Lug
R.
View
(.093)
(.010 .003)
.254 ± .076
2.36
(.031 ± .010)
.787 ± .254
(.375)
DIA.
9.53
(.835)
21.21
Consult factory for options not shown,
including:
• Wire lead or cable options
• Connectors
• Non-standard resolutions
• Special shaft/bushing sizes and
• Special performance characteristics
• PCB mounting bracket
9 PLCS.
Connector
5
4
3
2
1
Ribbon Cable Option Detail
F
Pinout
features
DIMENSIONS:
(.039)
0.99
Recommended Board Layout
18.11
(.713)
Shaft End Style C
2 PLCS.
DIA. MIN.
(.438)
11.13
(.275)
(.2497)
6.99
with Bracket
6.34
(.218)
5.54
(INCHES)
MM
Connector
Pinout
LENGTH
SHAFT
(.050)
(.625)
(.750)
(.875)
12.7
15.9
19.1
22.2
(.100)
2.54
5
4
3
2
1
4 PLCS.
(.163)
4.14
SHAFT FLAT
LENGTH
(DIM. F)
(.100)
(.200)
(.325)
(.380)
2.54
5.08
8.25
9.65