Features n RoHS compliant* n HCMOS, CMOS and TTL compatible n Compact package size n High rotational cycle life n Standard or high force push switch option 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 Specifications are subject to change without notice. www.P65Warnings.ca.gov 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 las t *RoHS Directive 2015/863, Mar 31, 2015 and Annex. 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 SWITCH OPTION MODEL NO. DESIGNATOR Code Description EM14 14 mm Rotary Optical Encoder S Push Switch (Standard) H Push Switch (High Force) BUSHING DESIGNATOR N No Switch Code Description A 3/8 " D x 3/8 " L Threaded RESOLUTION (Pulses Per Revolution) C 1/4 " D x 1/4 " L Threaded Code Description R 10 mm D x 9.5 mm L Threaded 08 8 PPR 16 16 PPR DETENT OPTION 32 32 PPR Code Description 64 64 PPR 0 No Detent 1 32 Detents (Available for CABLE/CONNECTOR OPTION 8 or 32 PPR only) Code Description 0 No Cable/Connector ANTI-ROTATION LUG/BRACKET OPTION 6 ” Cable with Female Connector 1 Code Description and stripped/tinned leads A A/R Lug 6 ” Cable with Female Connector 2 B Bracket (No hardware/no cable or on both ends connector) 12 ” Cable with Female Connector 3 D None and stripped/tinned leads 12 ” Cable with Female Connector 4 on both ends SHAFT STYLE (See Outline Drawing for Details) 3 ” Cable with Female Connector and Available w/ 5 stripped/tinned leads Code Description Bushing 1.5 ” Cable with Female Connector and B 1/4 " Dia. Slotted End A 6 stripped/tinned leads C 1/4 " Dia. Flatted End A 2 ” Cable with Female Connector and E 1/8 " Dia. Slotted End C 7 stripped/tinned leads R 6 mm Dia. Slotted End R 5 ” Cable with Female Connector and M 6 mm Dia. Flatted End R 8 stripped/tinned leads SHAFT LENGTH DESIGNATOR For other cable and connector options, please contact the factory. Code Length (FMS) Available w/Bushing 24 3/4 " A, C TERMINAL CONFIGURATION 28 7/8 " A, C Code Description 20 20 mm R L Axial Multi-Purpose Pin 25 25 mm R 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) L 10.03 (.395) 3.18 F 9.53 (.125)TYP. (.375) "L" PIN STYLE 4.76 14.76 (.187) (.581) DIA. 0.457 ± 0.026 (.018 ± .001) 8.00 (.315) METAL SHAFT (SEE TABLE FOR OPTIONS) 1.19 .79 METAL BUSHING (2.0.0882)TYP. TYP.(1.0.7659) R(.047)X(.031)HIGH (SEE TABLE FOR OPTIONS) "R" PIN STYLE "L" PIN STYLE ANTI-ROTATION BOSS 1.52 (OPTIONAL) TYP.(.060) "R" PIN STYLE Shaft / Flat Length Dimensions "A" Style Bushing - Flatted Shafts "R" Style Bushing - Flatted Shafts "C" Style Bushing - Slotted Shafts L L L F (9.3.5735) F (.93.754) (1.0.5620) (6.2.3550) 0.79 4.76 4.42 (.031) 1/4-32 UNEF-2A (.174) (.187) 3/8-32 UNEF-2A M10 x 0.75-6 g SHAFT BUSHING SHAFT LENGTH FLAT LENGTH SHAFT BUSHING SHAFT LENGTH FLAT LENGTH SHAFT BUSHING SHAFT LENGTH DIA. DIA. "L" "F" DIA. DIA. "L" "F" DIA. DIA. "L" 19.05 7.94 20.0 7.0 19.05 6.35 9.52 (.750) (.313) 6.0 10.0 (.787) (.275) 3.17 6.35 (.750) (.250) (.375) 22.22 9.52 (.236) (.394) 25.0 12.0 (.125) (.250) 22.22 (.875) (.375) (.984) (.472) (.875) "A" Style Bushing - Slotted Shafts "R" Style Bushing - Slotted Shafts L L 1.8 9.53 1.8 9.5 (.071) (.375) (.071) (.374) MM DIMENSIONS: (INCHES) 0.99 0.99 (.040) 3/8-32 UNEF-2A (.040) M10 x 0.75-6 g SHAFT BUSHING SHAFT LENGTH SHAFT BUSHING SHAFT LENGTH DIA. DIA. "L" DIA. DIA. "L" 19.05 20.0 6.35 9.52 (.750) 6.0 10.0 (.787) (.250) (.375) 22.22 (.236) (.394) 25.0 (.875) (.984) 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. "U" Style Bushing - Slotted Shafts L 1.52 8.0 (.060) (.305) 0.79 (.031) M7 x 0.75-6 g SHAFT BUSHING SHAFT LENGTH DIA. DIA. "L" 20.0 4.0 7.0 (.787) (.158) (.275) 25.0 (.984)

6.0 1.0 Cable Assembly, Connector on One End CONNECTOR x (.236) (.039) x 1.25PITCHRECEPTACLE STRIPPED AND TINNED RIBBON CABLE PIN 1 - 8.0 (.049) 100 % MATTE TIN 6x28 AWG x ( 1. 0 . 24 59 ) PITCH RED STRIPE REF.(.315) FOR(..405178)DIA. PINS 1 2 3 4 5 6 2.9 2.54 ± 0.4 6.0 ± 0.2 (.114) (.100 ± .016) (.236 ± .008) 3.5 ± 0.2 A 8.75 ± 0.2 (.138 ± .008) (.344 ± .008) 6.0 1.0 2 x CONNECTOR x Cable Assembly, Connector on Both Ends (.236) (.039) x 1.25PITCHRECEPTACLE RIBBON CABLE PIN 1 - RED STRIPE (.049) 6x28 AWG x 1 . 2 5 PITCH .457 (.049) FOR(.018)DIA. PINS 3EM31124 -- 124 m mmm RSoMtaDr yT rOipmtimcailn Egn cPoodteern wti/oSmwe654321ittcehr 123456 A Cable/Connector Options 6.0 1.0 Cable Assembly, Connector on One End CONNECTOR (.236)x(.039) HDW. DESCRIPTION “A” DIM. 1.25 NO. x PITCHRECEPTACLE STR10IP0P %ED M AANTDT ET ITNINNED 6x28R AIWBBGO xN ( 1.C 0 . A24 B59 L) PEITCH REPDI NS T1R -I PE REF.(.83.105) FO(R.0(4..40951)78)DIA. PINS H-290-1 CCAOBNLNEE CATSOSREM OBNL BYO, TH ENDS (165.20. 4± ±.1 59.70) 1234 H-290-2 CCAOBNLNEE CATSOSREM OBNL OY,N E END (31024.0.8 ± ± . 159.07) 5 6 2.9 CABLE ASSEMBLY, 304.8 ± 5.0 2.54 ± 0.4 6.0 ± 0.2 (.114) H-290-3 CONNECTOR ON BOTH ENDS (12.0 ± .197) (.100 ± .016) (.236 ± .008) 3.5 ± 0.2 A 8.75 ± 0.2 (.138 ± .008) (.344 ± .008) H-290-4 CABLE ASSEMBLY, 152.4 ± 5.0 CONNECTOR ON ONE END (6.0 ± .197) RIBBON CABLE, 28 AWG, 76.2 ± 5.0 6.0 1.0 H-290-5 CONNECTOR ON ONE END (3.0 ± .197) 2 x CONNECTOR x Cable Assembly, Connector on Both Ends (.236) (.039) x 1.25 PITCHRECEPTACLE RIBBON CABLE, 28 AWG, 38.1 ± 5.0 RIBBON CABLE PIN 1 - RED STRIPE (.049) H-290-6 CONNECTOR ON ONE END (1.5 ± .197) 6x28 AWG x 1 . 2 5 PITCH .457 (.049) FOR(.018)DIA. PINS 654321 123456 HH--229900--87 RRCIOIBBNBBNOOENNC CTCOAABRBLL OEEN,, 2 2O88N AAEWW EGGN,,D (5210.20.78 ± ±± . 1559..007) CONNECTOR ON ONE END (5.0 ± .197) A Terminal Configurations HDW. DESCRIPTION “A” DIM. Radial (shown with optional NmOo.unting bracket) 14.99 ± .13 CABLE ASSEMBLY, 152.4 ± 5.0 Recommended PCB Layout H-290-1 (.590 ± .005) CONNECTOR ON BOTH ENDS (6.0 ± .197) DIA. CLOCKWISE 1.73 ± .10 (H1.54-82.7196 ±0 ± -. 02.2150)CCAOBNLNEE CATSOSREM OBNL OY,N E END (31(021.4.505.98 .±17 ± 6 .± 1 5± 9.. 007.21)50) (.026 8P L±C .0S0.4) CCHHAANNNNEELL ““BA”” H-290-3 CCAOBNLNEE CATSOSREM OBNL BYO, TH ENDS (31024.0.8 ± ± . 159.07) 6 PLCS. D.6I4A. (.73.1807 ±± ..00083) 1 2 (.21.0632 ±± ..03185) (1.76.7167)REF. H-290-4(1.PR0.CE66BCCF03. )AOBNLNEE CAXTS(0OS.10.3RE.558M9 1O)BNWTLH IOYDIC,NE KE END (165.20(7.. 34±.81 ±.701 )59.70)(1.0.2449) CHANGNREOLU N“AD” CHPAONWNEELR “B” (.025) (.10.5520 7P ±L± C ..01S03.5) MOM(EOPNPUTTASIRHOY NO ASNLW)ITCH THICKNESS (.015) REF. MOMENTARY RIBBON CABLE, 28 AWG, 76.2 ± 5.0 SWITCH H-290-5 CONNECTOR ON ONE END (3.0 ± .197) Axial (shown with optional mountinRgIB bBOraNc CkAeBtL)E, 28 AWG, 38.1 ± 5.0 H-290-6 CONNECTOR ON ONE END (1.5 ± .197) 14.99 ± .25 (.590 ± .010) RIBBON CABLE, 28 AWG, 50.8 ± 5.0 H-290-7 Recommended PCB Layout CONNECTOR ON ONE END (2.0 ± .197) 14.61 (.575) RIBBON CABLE, 28 AWG, 127 ± 5.0 DIA. H-290-8 CONNECTOR ON ONE END (5.0 ± .197) 1.73 ± .10 (.068 ± .004) 2 PLCS. REF. DIA. 6.25 ± .08 6.25 .64 1.22 (.246) GROUND CHANNEL “B” (.025) (.246 ± .003) (.048) 6 PLCS. 1.27 ± .13 CHANNEL “A” POWER (.050 ± .005) 10.57 (1.0.6603) MOMENTARY 5 PLCS. 2.49 ± .38 17.17 (.416) REF. SWITCH MM (.098 ± .015) (.676) PCB THICKNESS D IMENSIONS: (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.

3EM31124 -- 124 m mmm RSoMtaDr yT rOipmtimcailn Egn cPoodteern wti/oSmweittcehr Electrical Block Diagram Quadrature Output CW – Ground 90 °e ± 45 °e High CHANNEL A Low A Channel A High CHANNEL B Low IRED 180 °e 1 Switch Terminal 1 pulse width 10k Opto ASIC 32 DETENT / 8 PPR 10k CW 2 Switch Terminal CHANNEL A + Power CHANNEL B B Channel B 32 DETENT / 32 PPR Terminal Diagram CW High CHANNEL A Low CHANNEL B High Low CHANNEL "A" GROUND CHANNEL "B" Detent Range NPoosmitiinoanl Detent A12 +B 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. TYP.1.27 POWER (.050) MOMENTARY SWITCH Asia-Pacific: Tel: +886-2 2562-4117 • Email: asiacus@bourns.com EMEA: Tel: +36 88 885 877 • Email: eurocus@bourns.com The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com www.bourns.com REV. 06/20 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. 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