Series 270 Data Sheet ® Electrocomponents Rotary Potentiometer Industrial 16mm Diameter Carbon Composition Rotary Potentiometer Features - Bushing - Twist or Bend Tab - Snap-in PC Bracket - PC Terminal Electrical and Mechanical Specifications Resistance Range 500 ohms through 2 Megohms, linear 5K ohms through 200K ohms, audio Stop Strength 5.76 kgf-cm minimum Resistance Tolerance ±30%, ±20%, ±10% Power Rating 1/4 watts @ 55°C (Resistance up to 100K ohms) 1/5 watts @ 55°C (Resistance above 100K ohms) Dielectric Strength 750 VAC for 1 minute Push-Pull Strength of Shaft 10 kg for 10 seconds Rotational life 10K cycles Operating temperature -10°C to +70°C Maximum Operating Voltage 500 VDC Insulation Resistance 100 Megohms minimum @ 250 VDC Angle of Rotation Total Rotation (Potentiometer and Switch) Without Switch: 300° With Switch: 315° Effective Electrical Angle (Potentiometer) Without Switch: 300° With Switch: 290° 1-9 CTS Electrocomponents Rotational Torque 36-360 gf-cm Solder Heat Resistance 260°C for 5 seconds Mounting Information - Bushing - Twist Tab - Bend Tab - Snap-in PC Bracket - PC Terminal © 2015 CTS Corporation. All rights reserved. Information subject to change. 03/27/15 www.ctscorp.com Electrical and Mechanical Specifications Shaft and Bushing Information Metal Shaft and Bushing Single or Dual Section Potentiometer with One Shaft Shaft Diameter Bushing Diameter inch mm inch mm .125 3.20 1/4" – 32UNEF-2A M7 X .75P .156 4.00 1/4" – 32UNEF-2A M7 X .75P .187 4.70 3/8" – 32UNEF-2A M7 X .75P .236 6.00 3/8" – 32UNEF-2A M8 X .75P .250 6.35 3/8" – 32UNEF-2A M9 X .75P Concentric Tandem Potentiometer with Two Shafts Inner Shaft Diameter Outer Shaft Diameter Bushing Diameter inch mm inch mm .236 6.00 .156 4.0 3/8" – 32UNEF-2A M8 X.75P .250 6.35 .125 3..2 3/8" – 32UNEF-2A M9 X.75P inch mm Molded Shaft and Bushing Single Section Potentiometer with One Shaft Shaft Diameter Bushing Diameter inch mm inch mm .156 4.00 1/4" – 32UNEF-2A M7 X .75P .187 4.70 3/8" – 32UNEF-2A M7 X .75P .236 6.00 3/8" – 32UNEF-2A M8 X .75P .250 6.35 3/8" – 32UNEF-2A M9 X .75P Shaft with Twist Tab, Bend Tab, Snap-in PC Bracket, or PC Terminal All metal or molded shaft diameters can be used except .187”(4.7mm), which can be used with snap-in PC bracket only. Terminal Information Standard: T: Solder lug formed 90° to the rear on single and multi-section/ X: PC terminals standard .438" (11.1mm) from center line of control to PC board, straight terminals extend .156" (4.0mm) into PC board. U: PC terminals formed 90° forward toward mounting surface. Terminals extend .187" (4.7mm) beyond mounting surface. V: PC terminals formed 90° to the rear, away from panel mounting. Terminals extend .442" (11.2mm) from mounting surface. Special: T: Solder lug perpendicular to shaft. Or, solder lug formed 60° to the rear. W: Wire wrap terminals — .156" (4.0mm) terminal extension beyond base, formed 60° to the rear. 2-9 CTS Electrocomponents © 2015 CTS Corporation. All rights reserved. Information subject to change. 03/27/15 www.ctscorp.com Electrical and Mechanical Specifications Optional Power Switches (All SPST) 9.0 .354 5.2 .205 15.3 .602 T= TYPE 057 Rotary Ø2.41 .095 HOLES(2) 0.4 .016 ELECTRICAL RATING 5A @ 20 VDC 3A @ 125 VAC (UL Recognized) Switch Actuating Torque - 2 to 10 in. oz. (144 to 720gf-cm) 11.15 .439 16.6 .652 SERIES 3.8 .150 0.8 .031 4.37 .172 0.2 .008 0.4 .016 4.37 .172 Ø1.40 MIN. (2)HOLES .055 4.50 .177 4.50 .177 DIMENSION: 9.1 .358 ELECTRICAL RATING DEMI Push On-Pull Off 3A @ 20 VDC DEMI Momentary Contact Push On 3A @ 20 VDC 15.9 .626 X=12.7 .500 Y=15.5 .610 TYPE SERIES 0.4 .016 3.6 .142 4.37 .172 3.2 .126 4.37 .172 Ø1.40 MIN. (2)HL'S .055 DIMENSION: 3-9 CTS Electrocomponents mm inch © 2015 CTS Corporation. All rights reserved. Information subject to change. mm inch 03/27/15 www.ctscorp.com 270X Metal Shaft, Bushing Mount, Printed Circuit “X” Type Terminals MOUNTING HOLE DETAIL MOUNTING SURFACE L±0.8 .031 9.53 .375 "A"± 0.4 .016 7.95±0.05 .313±.002 7.95±0.05 .313±.002 7.95 .313 2.39 .094 7.95 .313 Ø15.9 .626 CLEARANCE FOR BUSHING. 11.13 CLEARANCE FOR 2.4 X 1.0(.094 X .039) .438 LOCATING LUG. (2)HOLES. 15.09 .594 MOUNTING SURFACE 3/8-32UNEF-2A 1 2 3 15.9 .626 2 4.09 REF. .162 WIPER CCW CW 1 3 CLOCKWISE 4.37±0.05 .172±.002 CIRCUIT 4.37±0.05 .172±.002 Ø1.4 MIN. .055 (3) HOLES RECOMMENDED PCB LAYOUT DIMENSION: mm INCH 270U Metal Shaft, Bushing Mount, Printed Circuit “U” Type Terminals MOUNTING SURFACE L±0.8 .031 9.53 .375 "A"± 7.95 .313 0.4 .016 8.00±0.05 .315±.002 8.00±0.05 .315±.002 2.39 .094 7.95 .313 Ø15.9 .626 CLEARANCE FOR 2.4 X 1.0 (.094 X .039) MOUNTING LUG. (2)HOLES. 11.13 .438 11.30 .445 3/8-32UNEF-2A 4.37±0.05 .172±.002 1 9.2± 0.4 .362± .16 11.30±0.05 .445±.002 CLEARANCE FOR BUSHING 2 Ø1.4 MIN. .055 (3) HOLES 4.37±0.05 .172±.002 3 15.9 .626 2 WIPER CCW CW 1 RECOMMENDED PCB LAYOUT 3 CLOCKWISE CIRCUIT DIMENSION: 4-9 CTS Electrocomponents © 2015 CTS Corporation. All rights reserved. Information subject to change. mm INCH 03/27/15 www.ctscorp.com 270V Metal Shaft, Bushing Mount, Printed Circuit “V” Type Terminals MOUNTING HOLE DETAIL MOUNTING SURFACE 9.53 .375 7.95±0.05 .313±.002 7.95±0.05 .313±.002 L±0.8 .031 0.4 "A"± .016 7.95 .313 CLEARANCE FOR BUSHING. 2.39 .094 7.95 .313 Ø15.9 .626 CLEARANCE FOR 2.4 X 1.0(.094 X .039) LOCATING LUG. (2)HOLES. 12.29 CENTER LINES OF CONTROL .484 3/8-32UNEF-2A 1 2 3 15.9 .626 11.2± 0.4 .441± .16 2 12.29 .484 WIPER CCW CW 1 3 4.37±0.05 .172±.002 CLOCKWISE CIRCUIT 4.37±0.05 .172±.002 Ø1.4 MIN. .055 (3) HOLES DIMENSION: mm INCH RECOMMENDED PCB LAYOUT 275X Metal Shaft, Bushing Mount, Printed Circuit “X” Type Terminals MOUNTING HOLE DETAIL 9.53 .375 "A"± 0.4 .016 7.95±0.05 .313±.002 7.95±0.05 .313±.002 MOUNTING SURFACE L±0.8 .031 7.95 .313 CLEARANCE FOR BUSHING. 2.39 .094 7.95 .313 CLEARANCE FOR 2.4 X 1.0(.094 X .039) LOCATING LUG. (2)HOLES. Ø15.9 .626 MOUNTING SURFACE 12.5 .492 4.09 REF. .162 17.00 .669 2 3/8-32UNEF-2A 4.5 .177 1 2 15.9 .626 3 WIPER CCW CW 1 3 CLOCKWISE CIRCUIT 5.00±0.05 .197±.002 5.00±0.05 .197±.002 Ø1.4 MIN. .055 (3) HOLES RECOMMENDED PCB LAYOUT DIMENSION: 5-9 CTS Electromonponents © 2015 CTS Corporation. All rights reserved. Information subject to change. mm INCH 03/27/15 www.ctscorp.com 270T Metal Shaft, Bushing Mount, Solder Lug “T” Type Terminals MTG. SURFACE 9.53 .375 MOUNTING HOLE DETAIL L±0.8 .031 2.39 .094 "A"±0.4 .016 7.95±0.05 .313±.002 7.95±0.05 .313±.002 7.95 .313 7.95 .313 Ø15.9 .626 CLEARANCE FOR BUSHING. 11.13 .438 CLEARANCE FOR 2.4 X 1.0(.094 X .039) LOCATING LUG. (2)HOLES. 13.1 MAX. .516 3/8-32UNEF-2A 2 1 WIPER CCW 3 2 CW 1 15.9 .626 3 CLOCKWISE CIRCUIT DIMENSION: mm inch 270T-2 Dual Section, Metal Shaft, Bushing Mount, Solder Lug “T” Type Terminals MTG. SURFACE 18.64 .734 7.95 .313 3/8-32UNEF-2A 7.95 .313 MOUNTING HOLE DETAIL 7.95 .313 7.95 .313 2.39 .094 7.95 .313 11.13 .438 A± 0.40 .016 L± 0.8 .031 1 2 15.9 .626 13.1 MAX. .516 CLEARANCE FOR BUSHING CLEARANCE FOR 2.39/.094 x 1.0/.040 LOCATING LUG. (2)HOLES. 3 2 WIPER CCW CW 1 3 CLOCKWISE CIRCUIT DIMENSION: 6-9 CTS Electromonponents © 2015 CTS Corporation. All rights reserved. Information subject to change. mm INCH 03/27/15 www.ctscorp.com 270T-DEMIT Metal Shaft, Bushing Mount, Solder Lug “T” Type Terminals, DEMI Switch MOUNTING HOLE DETAIL MOUNTING SURFACE L±0.8 .031 18.7 .736 "A"± R 7.95±0.05 .313±.002 7.95±0.05 .313±.002 0.4 .016 P 7.95 .313 CLEARANCE FOR BUSHING. Ø15.9 .626 CLEARANCE FOR 2.4 X 1.0(.094 X .039) LOCATING LUG. (2)HOLES. 11.13 .438 S1 3/8-32UNEF-2A S2 S1 1 2 S2 1 CCW 15.9 .626 "DEMI" SWITCH CW 3 3 WIPER 2 CLOCKWISE CIRCUIT mm DIMENSION: INCH 270X-057X Metal Shaft, Bushing Mount, Printed Circuit “X” Type Terminals, Rotary 057 Switch MOUNTING HOLE DETAIL 7.95 .313 MTG. SURFACE 3.81 .150 9.53 .375 7.95 .313 3/8-32UNEF-2A 7.95 .313 CLEARANCE FOR BUSHING 7.95 .313 2.39 .094 16.6 .652 7.95 .313 CLEARANCE FOR 2.39/.094 x 1.0/.040 LOCATING LUG. (2)HOLES. 11.13 .438 15.09 .594 11.15 .439 4.50 .177 2 A± 0.40 .016 L± 0.80 .031 WIPER CCW 1 1 2 3 Ø1.4 MIN 5HL'S. CW 3 5.72 .225 MTG. SURFACE 4.09 CLOCKWISE .161 CIRCUIT 4.37 4.37 .172 .172 DIMENSION: 7-9 CTS Electrocomponents © 2015 CTS Corporation. All rights reserved. Information subject to change. mm INCH 03/27/15 www.ctscorp.com Shaft Diameter and Trim Dia. ROUND X FLATTED Dia. Type Diameter A .125” (3.18 mm) R .156” (3.96 mm) G .187” (4.75 mm) X .236” (6.00 mm) P .250” (6.35 mm) Type Diameter X Y Y B .125” (3.18 mm) .250” (6.35 mm) .109” (2.77 mm) D .250” (6.35 mm) .375” (9.52 mm) .156” (3.96 mm) H .187” (4.75 mm) .250” (6.35 mm) .156” (3.96 mm) F .156” (3.96 mm) .250” (6.35 mm) .109” (2.77 mm) L .236” (6.00 mm) .472” (12.0mm) .177” (4.50 mm) V* .187” (4.75 mm) .313” (7.95 mm) .156” (3.96 mm) W** .236” (6.00 mm) .472” (12.0 mm) .177” (4.50 mm) *Molded Shaft, FMS .875” (22.2 mm), not available with switch **Molded Shaft, FMS .984” (25.0 mm), with rotary switch only X SLOTTED Type Diameter X Y Y C .125” (3.18 mm) .047” (1.19 mm) .039” (1.00 mm) S .156” (3.96 mm) .047” (1.19 mm) .039” (1.00 mm) J .187” (4.75 mm) .047” (1.19 mm) .039” (1.00 mm) M .236” (6.00 mm) .047” (1.19 mm) .039” (1.00 mm) E .250” (6.35 mm) .047” (1.19 mm) .039” (1.00 mm) X Type KNURLED & SLOTTED (Metal Shaft) X Y Z N .236” (6.00 mm) .342” (8.70 mm) .039” (1.00 mm) 18 Teeth T .236” (6.00 mm) .279” (7.10 mm) .062” (1.57 mm) 24 Teeth Z X KNURLED & SLOTTED (Molded Shaft) Diameter Y Y Type Diameter X Y Z U* .187” (4.75 mm) .062” (1.57 mm) .046” (1.17 mm) 18 Teeth K** .236” (6.00 mm) .200” (5.08 mm) .046” (1.17 mm) 18 Teeth Z *Molded Shaft, FMS .500” (12.7 mm), not available with switch **Molded Shaft, FMS .500” (12.7 mm), with rotary switch only 8-9 CTS Electrocomponents © 2015 CTS Corporation. All rights reserved. Information subject to change. 03/27/15 www.ctscorp.com Ordering Information 270/275 T 2 20 R 103 B 1 A 1 TERMINAL STYLE T – SOLDER LUG * X – PC * U – FORMED TO FRONT V – FORMED TO REAR * for 275 MOUNTING STYLE “A” BRASS BUSHING MOUNT LENGTH EXAMPLES 2 – .250" 3 – .375" 8 – 1.000" 3/8" – 32UNEF-2A LENGTH INCREMENT: 1/8” TWIST TAB MOUNT 1 – TWIST TAB SHAFT LENGTH “L” METAL SHAFTS EXAMPLES 16 – .500" 20 – .625" 24 – .750" 28 – .875" 32 – 1.000" LENGTH INCREMENT: 1/32” MOLDED SHAFT 16 – .500" (shaft trim “U” & “K” only) 28 – .875" (shaft trim “V” only) 32 – .984" (shaft trim “W” only) RESISTANCE CODE EXAMPLES CODE 501 102 252 502 103 253 503 104 RESISTANCE 500 OHMS 1K 2.5K 5K 10K 25K 50K 100K TAPER 1 – LINEAR 2 – 10% AUD 3 – 10% CCW AUD SWITCH TYPE RESIST TOL BRACKET MOUNT 0 – BRACKET SHAFT DIAMETER AND TRIM A – NONE B – SPST ROTARY C – DEMI MOMENTARY D – DEMI PUSH-PULL A – ±10% B – ±20% C – ±30% METAL SHAFT A– B– C– R– F– S– G– H– J – X– L– M– N– P– D– E– T– .125" DIA. ROUND .125" DIA. FLATTED .125" DIA. SLOTTED .156" DIA. ROUND .156" DIA. FLATTED .156" DIA. SLOTTED .187" DIA. ROUND .187" DIA. FLATTED .187" DIA. SLOTTED .236" DIA. ROUND .236" DIA. FLATTED .236" DIA. SLOTTED .236" DIA. SLOTTED & KNURLED .250" DIA. ROUND .250" DIA. FLATTED .250" DIA. SLOTTED .236" DIA. SLOTTED & KNURLED SPECIALS 1 – LEFT LOCATING LUG 2 – 50% DETENT WITH LEFT LOCATING LUG 3 – 50% DETENT WITH RIGHT LOCATING LUG 4 – RIGHT LOCATING LUG 5 – NO LOCATING LUG MOLDED SHAFT *U – .187" DIA. SLOTTED & KNURLED (.500” shaft length only) **K – .236" DIA. SLOTTED & KNURLED (.500” shaft length only) *V – .187" DIA. FLATTED (.875” shaft length only) **W – .236" DIA. FLATTED (.984” shaft length only) * Molded shaft not available with swtich ** Molded shaft with rotary switch only Note : Consult CTS for custom or not listed features including shaft, bushing, longer life cycles, solderable cover, anti-static design, etc. 9-9 CTS Electrocomponents © 2015 CTS Corporation. All rights reserved. Information subject to change. 03/27/15 www.ctscorp.com