Features
n RoHS compliant*
Additional Information
Click these links for more information:
n HCMOS, CMOS and TTL compatible
n Compact package size
n High rotational cycle life
n Standard or high force push switch option
PRODUCT TECHNICAL INVENTORY SAMPLES
LIBRARY
CONTACT
n Optional detent
EM14 – 14 mm Rotary Optical Encoder w/Switch
Electrical Characteristics
Electrical Output........................................................................................................................................................................................ 2-bit quadrature code
Resolution........................................................................................................................................................................... 8 to 64 pulses per revolution (PPR)
Supply Voltage (VCC)................................................................................................................................................................................ 5.0 VDC ± 0.25 VDC
Supply Current (ICC).........................................................................................................................................................................................26 mA maximum
Output Voltage
Low (VCE(sat)), per Channel..................................................................................................................................... 800 mV maximum at I(SINK) = 25 mA
High (VO(HI)), per Channel...................................................................................................................................... 4.0 VDC minimum @ VCC = 4.75 VDC
Output Current I(SINK), per Channel................................................................................................................................................................25 mA maximum
Rise/Fall Time.........................................................................................................................................................................................................200 ns typical
Power Dissipation..........................................................................................................................................................................................167 mW maximum
Pulse Width (per Channel)..................................................................................................................................................................................... 180 °e typical
Phase Angle (Channel A Leads Channel B, Clockwise Rotation)..........................................................................................................................90 °e ± 45 °e
Insulation Resistance @ 500 VDC..................................................................................................................................................... 1,000 megohms minimum
Operating RPM ....................................................................................................................................................................................................120 maximum
Switch Power Rating...............................................................................................................................................12 VDC / 20 mA (600 ohms minimum load)
Switch Contact Resistance......................................................................................................................................................................... 200 ohms maximum
Environmental Characteristics
Operating Temperature Range @ 5.0 VDC....................................................................................................................... -40 °C to +70 °C (-40 °F to +158 °F)
Storage Temperature Range............................................................................................................................................ -55 ºC to +125 ºC (-67 °F to +257 °F)
Vibration...............................................................................................................................................................................................................................15 G
Shock...................................................................................................................................................................................................................................50 G
Humidity....................................................................................................................................................................... MIL-STD-202, Method 103, Condition B
Flammability............................................................................................................................................................................................. Conforms to UL 94HB
IP Rating............................................................................................................................................................................................................................IP 54**
Mechanical Characteristics
Mechanical Angle.............................................................................................................................................................................................360 ° Continuous
Torque
Starting/Running................................................................................................................................................................ 1.06 N-cm (1.5 oz.-in.) maximum
Detent.........................................................................................................................................................................................1.2 N-cm (1.7 oz.-in.) typical
Rotational Life
Non-detent (@ 30 RPM)........................................................................................................................................1,000,000 cycles (2,000,000 revolutions)
With detent (@ 30 RPM)..............................................................................................................................................100,000 cycles (200,000 revolutions)
Switch Life............................................................................................................................................................................................................100,000 cycles
Switch Actuation Force
Standard.......................................................................................................................................................................................... 250 gm (8.82 oz.) typical
High Force..................................................................................................................................................................................... 850 gm (29.98 oz.) typical
Switch Travel
Standard...........................................................................................................................................................................................................0.04 in. typical
High Force......................................................................................................................................................................................................0.025 in. typical
Shaft Radial Play........................................................................................................................................................................................... 0.005 in. maximum
Shaft Axial Structural Strength.......................................................................................................................................................................... 35 lbs. minimum
Mounting Torque............................................................................................................................................................................2.0 N-m (18 lb.-in.) maximum
Materials and Finishes
Terminals.........................................................................................................................................................................................................Sn plated PC pins
Soldering Condition
Manual Soldering..................................................................................................................... 96.5Sn/3.0Ag/0.5Cu solid wire or no-clean rosin cored wire
370 °C (700 °F) max. for 3 seconds
Wave Soldering.............................................................................................................................................. 96.5Sn/3.0Ag/0.5Cu solder with no-clean flux
260 °C (500 °F) max. for 5 seconds
Wash processes........................................................................................................................................................................................Not recommended
Mounting Hardware
Nut...............................................................................................................................Black annodized brass, hex (metric)/Nickel-plated brass, hex (SAE)
Lockwasher............................................................................................................................................................. Nickel-plated spring steel, internal tooth
Marking.....................................................................................................Manufacturer’s symbol, model number, product code, terminal style and date code
Standard Packaging.......................................................................................................................................................... Anti-static plastic tube (25 pcs./tube)
**When device is mounted by normal mounting means.
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last
page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Additional Features
n Splashproof shaft seal
n Recommended for human/machine interface applications (HMI)
n Cable/connector option
n Optional bracket
EM14 – 14 mm Rotary Optical Encoder w/Switch
Part Numbering System
E M 1 4 A 0 D - C 2 4
-
L 0 3 2 S
MODEL NO. DESIGNATOR
EM14 14 mm Rotary Optical Encoder
Code
A
C
R
Code
S
H
N
BUSHING DESIGNATOR
Description
3/8 " D x 3/8 " L Threaded
1/4 " D x 1/4 " L Threaded
10 mm D x 9.5 mm L Threaded
RESOLUTION (Pulses Per Revolution)
Code Description
08
8 PPR
16
16 PPR
32
32 PPR
64
64 PPR
DETENT OPTION
Code Description
0
No Detent
1
32 Detents (Available for
8 or 32 PPR only)
ANTI-ROTATION LUG/BRACKET OPTION
Code Description
A
A/R Lug
B
Bracket (No hardware/no cable or
connector)
D
None
SHAFT STYLE (See Outline Drawing for Details)
Code
B
C
E
R
M
Description
1/4 " Dia. Slotted End
1/4 " Dia. Flatted End
1/8 " Dia. Slotted End
6 mm Dia. Slotted End
6 mm Dia. Flatted End
Code
24
28
20
25
SWITCH OPTION
Description
Push Switch (Standard)
Push Switch (High Force)
No Switch
Available w/
Bushing
A
A
C
R
R
SHAFT LENGTH DESIGNATOR
Length (FMS)
Available w/Bushing
3/4 "
A, C
7/8 "
A, C
20 mm
R
25 mm
R
CABLE/CONNECTOR OPTION
Code Description
0
No Cable/Connector
6 ” Cable with Female Connector
1
and stripped/tinned leads
6 ” Cable with Female Connector
2
on both ends
12 ” Cable with Female Connector
3
and stripped/tinned leads
12 ” Cable with Female Connector
4
on both ends
3 ” Cable with Female Connector and
5
stripped/tinned leads
1.5 ” Cable with Female Connector and
6
stripped/tinned leads
2 ” Cable with Female Connector and
7
stripped/tinned leads
5 ” Cable with Female Connector and
8
stripped/tinned leads
Connector
available,but
but not
not
Connector options
options 1~8
1~8 are
are currently available,
recommended
Product Obsolescence
Obsolescence
recommended for
for new designs. See Product
Memo.
Memo.
For other cable and connector options, please contact the factory.
TERMINAL CONFIGURATION
Code Description
L
Axial Multi-Purpose Pin
R
Radial Multi-Purpose Pin
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
EM14 – 14 mm Rotary Optical Encoder w/Switch
Product Dimensions
MOUNTING
SURFACE
14.25
(0.561)
10.03
(.395)
L
3.18
TYP.
(.125)
"L" PIN STYLE
9.53
(.375)
F
4.76
(.187)
14.76
(.581)
DIA.
0.457 ± 0.026
(.018 ± .001)
8.00
(.315)
METAL SHAFT
(SEE TABLE FOR OPTIONS)
1.19
.79
X
HIGH
(.047) (.031)
ANTI-ROTATION BOSS
(OPTIONAL)
R
2.08
TYP.
(.082)
"R" PIN STYLE
METAL BUSHING
(SEE TABLE FOR OPTIONS)
1.75
(.069)
"L" PIN STYLE
TYP.
1.52
(.060)
"R" PIN STYLE
TYP.
Shaft / Flat Length Dimensions
"A" Style Bushing - Flatted Shafts
L
L
9.53
(.375)
F
4.76
(.187)
BUSHING
DIA.
6.35
(.250)
9.52
(.375)
SHAFT LENGTH FLAT LENGTH
"L"
"F"
19.05
7.94
(.750)
(.313)
22.22
9.52
(.875)
(.375)
"A" Style Bushing - Slotted Shafts
1.8
(.071)
L
F
4.42
(.174)
3/8-32 UNEF-2A
SHAFT
DIA.
"R" Style Bushing - Flatted Shafts
"C" Style Bushing - Slotted Shafts
9.5
(.374)
1.52
(.060)
0.79
(.031)
L
6.35
(.250)
1/4-32 UNEF-2A
M10 x 0.75-6 g
SHAFT
DIA.
BUSHING
DIA.
6.0
(.236)
10.0
(.394)
SHAFT LENGTH FLAT LENGTH
"L"
"F"
20.0
7.0
(.787)
(.275)
25.0
12.0
(.984)
(.472)
SHAFT
DIA.
BUSHING
DIA.
3.17
(.125)
6.35
(.250)
"R" Style Bushing - Slotted Shafts
1.8
(.071)
9.53
(.375)
L
9.5
(.374)
DIMENSIONS:
0.99
(.040)
0.99
(.040)
3/8-32 UNEF-2A
SHAFT
DIA.
BUSHING
DIA.
6.35
(.250)
9.52
(.375)
SHAFT LENGTH
"L"
19.05
(.750)
22.22
(.875)
SHAFT LENGTH
"L"
19.05
(.750)
22.22
(.875)
MM
(INCHES)
M10 x 0.75-6 g
SHAFT
DIA.
BUSHING
DIA.
6.0
(.236)
10.0
(.394)
SHAFT LENGTH
"L"
20.0
(.787)
25.0
(.984)
Specifications are subject to change without notice.
"U" Style Bushing - Slotted Shafts
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
L
1.52
(.060)
8.0
(.305)
123456
2.54 ± 0.4
(.100 ± .016)
6.0 ± 0.2
(.236 ± .008)
A
8.75 ± 0.2
(.344 ± .008)
2 x CONNECTOR
Cable Assembly, Connector on Both Ends
A
Cable/Connector Options
6.0
1.0
x
(.236) (.039)
1.25
x
PITCH RECEPTACLE
(.049)
.457
FOR (.018) DIA. PINS
Cable Assembly, Connector on One End
STRIPPED AND TINNED
100 % MATTE TIN
CONNECTOR
RIBBON CABLE
6x28 AWG x 1.25 PITCH
(.049)
PIN 1 RED STRIPE
REF.
8.0
(.315)
123456
2.54 ± 0.4
(.100 ± .016)
6.0 ± 0.2
(.236 ± .008)
A
8.75 ± 0.2
(.344 ± .008)
2 x CONNECTOR
Cable Assembly, Connector on Both Ends
PIN 1 - RED STRIPE
RIBBON CABLE
6x28 AWG x 1.25 PITCH
(.049)
2.9
(.114)
3.5 ± 0.2
(.138 ± .008)
6.0
1.0
x
(.236) (.039)
1.25
PITCH RECEPTACLE
(.049)
.457
FOR (.018) DIA. PINS
x
123456
654321
HDW.
NO.
DESCRIPTION
“A” DIM.
H-290-1
CABLE ASSEMBLY,
CONNECTOR ON BOTH ENDS
152.4 ± 5.0
(6.0 ± .197)
H-290-2
CABLE ASSEMBLY,
CONNECTOR ON ONE END
304.8 ± 5.0
(12.0 ± .197)
H-290-3
304.8 ± 5.0
CABLE ASSEMBLY,
CONNECTOR ON BOTH ENDS (12.0 ± .197)
H-290-4
CABLE ASSEMBLY,
CONNECTOR ON ONE END
152.4 ± 5.0
(6.0 ± .197)
H-290-5
RIBBON CABLE, 28 AWG,
CONNECTOR ON ONE END
76.2 ± 5.0
(3.0 ± .197)
H-290-6
RIBBON CABLE, 28 AWG,
CONNECTOR ON ONE END
38.1 ± 5.0
(1.5 ± .197)
H-290-7
RIBBON CABLE, 28 AWG,
CONNECTOR ON ONE END
50.8 ± 5.0
(2.0 ± .197)
H-290-8
RIBBON CABLE, 28 AWG,
CONNECTOR ON ONE END
127 ± 5.0
(5.0 ± .197)
A
Terminal Configurations
HDW.
DESCRIPTION
“A” DIM.
CABLE ASSEMBLY,
CONNECTOR ON BOTH ENDS
152.4 ± 5.0
(6.0 ± .197)
NO.
Radial (shown with optional mounting
bracket)
14.99 ± .13
(.590 ± .005)
H-290-1
CABLE ASSEMBLY,
H-290-2
14.76 ± .25
CONNECTOR ON ONE END
(.581 ± .010)
H-290-3
2.62 ± .38
(.103 ± .015)
17.17
REF.
(.676)
RIBBON CABLE, 28 AWG,
CONNECTOR ON ONE END
Axial (shown with optional mounting
bracket)
RIBBON
CABLE, 28 AWG,
14.99 ± .25
(.590 ± .010)
1.24
152.4 ± 5.0
(.049)
(6.07.87
± .197)
(.310)
REF.
76.2 ± 5.0
(3.0 ± .197)
38.1 ± 5.0
(1.5 ± .197)
H-290-7
RIBBON CABLE, 28 AWG,
CONNECTOR ON ONE END
50.8 ± 5.0
(2.0 ± .197)
H-290-8
RIBBON CABLE, 28 AWG,
CONNECTOR ON ONE END
127 ± 5.0
(5.0 ± .197)
1.22
(.048)
2.49 ± .38
(.098 ± .015)
17.17
(.676)
DIA.
1.73 ± .10
(.068 ± .004)
2 PLCS.
304.8 ± 5.0
15.16
± .25
(12.0
± .197)
(.597 ± .010)
CONNECTOR ON ONE END
H-290-6
Recommended PCB Layout
304.8 ± 5.0
CABLE ASSEMBLY,
CONNECTOR ON BOTH ENDS (12.0 ± .197)
1.60
1.5
WIDE
(.063)
CABLE ASSEMBLY,
(.059)
H-290-4 REF.
CONNECTOR
ON ONE END
0.381
PCB
X
THICK
THICKNESS
(.015)
H-290-5
1.25
PITCH RECEPTAC
(.049)
.457
FOR (.018) DIA. PINS
123456
EM14 – 14 mm Rotary Optical Encoder w/Switch
6.0
1.
x
(.236) (.03
x
PIN 1 - RED STRIPE
654321
RIBBON CABLE
6x28 AWG x 1.25 PITCH
(.049)
2.9
(.114
3.5
(.138
10.57
(.416)
REF.
6.25
(.246)
1.60
(.063)
REF.
PCB THICKNESS
DIA.
.64
6 PLCS.
(.025)
GROUND
CHANNEL “A”
7.87 ± .08
(.310 ± .003)
1.27 ± .13
(.050 ± .005)
5 PLCS.
CHANNEL “B”
POWER
MOMENTARY
SWITCH
Recommended PCB Layout
14.61
(.575)
GROUND
CHANNEL “A”
CHANNEL “B”
POWER
DIA.
.64
(.025)
6 PLCS.
MOMENTARY
SWITCH
DIMENSIONS:
DIA.
1.73 ± .10
(.068 ± .004)
2 PLCS.
6.25 ± .08
(.246 ± .003)
1.27 ± .13
(.050 ± .005)
5 PLCS.
MM
(INCHES)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
CHAN
CHAN
EM14 – 14 mm Rotary Optical Encoder w/Switch
Electrical Block Diagram
Quadrature Output
CW
–
Ground
A
Channel A
90 °e ± 45 °e
CHANNEL A
IRED
1
CHANNEL B
High
Low
High
Low
180 °e
1 pulse width
Switch Terminal
10k
Opto
ASIC
32 DETENT / 8 PPR
10k
CW
2
Switch Terminal
+
Power
B
Channel B
CHANNEL A
CHANNEL B
32 DETENT / 32 PPR
CW
Terminal Diagram
High
CHANNEL A
Low
CHANNEL B
High
Low
Detent Range
CHANNEL "A"
CHANNEL "B"
GROUND
A12 +B
TYP. 1.27
(.050)
Nominal Detent
Position
1. Nominal detent position occurs when both Channel A and B are in
low states.
2. Channel A leads Channel B in CW direction and lags in CCW
direction.
POWER
MOMENTARY SWITCH
Asia-Pacific: Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
Europe: Tel: +36 88 885 877 • Email: eurocus@bourns.com
The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
REV. 11/22
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and its
affiliates (collectively, “Bourns”).
Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
without notice. Users should check for and obtain the latest relevant information and verify that such information is current and
complete before placing orders for Bourns® products.
The characteristics and parameters of a Bourns® product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
requirements in generic applications. The characteristics and parameters of a Bourns® product in a user application may vary
from the data sheet characteristics and parameters due to (i) the combination of the Bourns® product with other components
in the user’s application, or (ii) the environment of the user application itself. The characteristics and parameters of a Bourns®
product also can and do vary in different applications and actual performance may vary over time. Users should always verify
the actual performance of the Bourns® product in their specific devices and applications, and make their own independent
judgments regarding the amount of additional test margin to design into their device or application to compensate for
differences between laboratory and real world conditions.
Unless Bourns has explicitly designated an individual Bourns® product as meeting the requirements of a particular industry
standard (e.g., ISO/TS 16949) or a particular qualification (e.g., UL listed or recognized), Bourns is not responsible for any
failure of an individual Bourns® product to meet the requirements of such industry standard or particular qualification. Users of
Bourns® products are responsible for ensuring compliance with safety-related requirements and standards applicable to their
devices or applications.
Bourns® products are not recommended, authorized or intended for use in nuclear, lifesaving, life-critical or life-sustaining applications, nor in any other applications where failure or malfunction may result in personal injury, death, or severe property or
environmental damage. Unless expressly and specifically approved in writing by two authorized Bourns representatives on a
case-by-case basis, use of any Bourns® products in such unauthorized applications might not be safe and thus is at the user’s
sole risk. Life-critical applications include devices identified by the U.S. Food and Drug Administration as Class III devices and
generally equivalent classifications outside of the United States.
Bourns expressly identifies those Bourns® standard products that are suitable for use in automotive applications on such
products’ data sheets in the section entitled “Applications.” Unless expressly and specifically approved in writing by two
authorized Bourns representatives on a case-by-case basis, use of any other Bourns® standard products in an automotive
application might not be safe and thus is not recommended, authorized or intended and is at the user’s sole risk. If Bourns
expressly identifies a sub-category of automotive application in the data sheet for its standard products (such as infotainment
or lighting), such identification means that Bourns has reviewed its standard product and has determined that if such Bourns®
standard product is considered for potential use in automotive applications, it should only be used in such sub-category of
automotive applications. Any reference to Bourns® standard product in the data sheet as compliant with the AEC-Q standard
or “automotive grade” does not by itself mean that Bourns has approved such product for use in an automotive application.
Bourns® standard products are not tested to comply with United States Federal Aviation Administration standards generally
or any other generally equivalent governmental organization standard applicable to products designed or manufactured for
use in aircraft or space applications. Bourns expressly identifies Bourns® standard products that are suitable for use in aircraft
or space applications on such products’ data sheets in the section entitled “Applications.” Unless expressly and specifically
approved in writing by two authorized Bourns representatives on a case-by-case basis, use of any other Bourns® standard
product in an aircraft or space application might not be safe and thus is not recommended, authorized or intended and is at the
user’s sole risk.
The use and level of testing applicable to Bourns® custom products shall be negotiated on a case-by-case basis by Bourns and
the user for which such Bourns® custom products are specially designed. Absent a written agreement between Bourns and the
user regarding the use and level of such testing, the above provisions applicable to Bourns® standard products shall also apply
to such Bourns® custom products.
Users shall not sell, transfer, export or re-export any Bourns® products or technology for use in activities which involve the
design, development, production, use or stockpiling of nuclear, chemical or biological weapons or missiles, nor shall they use
Bourns® products or technology in any facility which engages in activities relating to such devices. The foregoing restrictions
apply to all uses and applications that violate national or international prohibitions, including embargos or international
regulations. Further, Bourns® products and Bourns technology and technical data may not under any circumstance be
exported or re-exported to countries subject to international sanctions or embargoes. Bourns® products may not, without prior
authorization from Bourns and/or the U.S. Government, be resold, transferred, or re-exported to any party not eligible
to receive U.S. commodities, software, and technical data.
To the maximum extent permitted by applicable law, Bourns disclaims (i) any and all liability for special, punitive, consequential,
incidental or indirect damages or lost revenues or lost profits, and (ii) any and all implied warranties, including implied warranties
of fitness for particular purpose, non-infringement and merchantability.
For your convenience, copies of this Legal Disclaimer Notice with German, Spanish, Japanese, Traditional Chinese and Simplified Chinese
bilingual versions are available at:
Web Page: http://www.bourns.com/legal/disclaimers-terms-and-policies
PDF: http://www.bourns.com/docs/Legal/disclaimer.pdf
C1753 05/17/18R
工商网监
湘ICP备2023018690号
