RK271

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High performance potentiometer with excellent operational feel 27mm Size Metal Shaft TypeRK271 Product Line Number of resistor elements Mounting direction Single-unit Dual-unit Horizontal type Shaft type Slotted Flat Length of the shaft L1（mm） Center detent Without Total resistance （k Ω） 100 Resistance taper 15A Products No. RK2711120026 RK271111001T RK27112A00AK RK27112A00CC RK27112A0A16 RK27112A00B9 Minimumorder unit （pcs.） Japan Export 100 500 Drawing No. Refer to P.341 for attached parts. Refer to P.342 for other specifications. Refer to P.343 for ordering products not listed. Refer to P.349 for soldering conditions. Other varieties are also available. Refer to "Other Specifications" (P.342). Note ■ Typical Specifications Items Specifications Total resistance tolerance ±20％ Maximum operating voltage 30V AC Total rotational angle 300° ±3° Rotational torque 8 to 35mN ・ m Operating life 15,000 cycles Operating temperature range −10℃ to ＋70℃ Packing Specifications Bulk Number of resistor elements/ Shaft length Number of packages （pcs.） Export package measurements （mm）1 case /Japan 1 case /export packing Single-unit / 25mm Dual-unit / 20mm 100 500 380×540×314 Dual-unit / 25mm 360×510×359

No. Photo Style PC board mounting hole dimensions （Viewed from mounting side） 7 10 15.3 4 12.5 24.5 2 M8G0.75 321 Not specified slotting angle 1.6 C0.5 1.6 7 10 25.3 4 12.5 24.5 2 M8G0.75 C0.5 321R1 R2 Not specified slotting angle ʷ ਤ ƅ Dimensions Single-shaft, single-unit RK27111 Single-shaft, dual-unit RK27112 Single-shaft, dual-unit RK27112 Unit:mm 20 25L1 20 25L1 The following parts are included with the product. Nut Washer 27mm Size Metal Shaft Type / Attached Parts ø14 ø8.1 0.511 M8×0.75 Unit:mm RK271／27mm Size Metal Shaft Type 3-ø1.2 hole Mounting surface 6-ø1.2 hole Mounting surface RK27112A-RV6-ੇ๏ਤ.EPS 510 6–ø1.2 hole Mounting surface

Refer to P.341 for attached parts. Refer to P.343 for ordering products not listed. In addition to the products listed, we can accommodate the follow specifications. Products Specification Type Model Mounting height （mm） Detent variety Gang error Single-shaft, single-unit RK27111 Single-shaft, dual-unit RK27112 Single-shaft, quad-unit RK27114 12.5 Center −60dB to 0dB within 3dB −80dB to −60dB within 5dB possible depending on total resistance and taper. Total Resistance Variety Total resistance （kΩ） 105 20 50 100 250 Resistance Taper Resistance taper 15A 3B Dimensions of Shaft 1） Slotted type Unit:mm 2） Flat type Unit:mm M8G0.75 60˚ 4.5 Shaft shown in full CCW position M8G0.75 C0.5 1.6 Not specified slotting angle Marked are specifications recommended by Alps. Note 27mm Size Metal Shaft Type / Other Specifications

0 100 90 80 70 60 50 40 30 20 10 Rotation travel ( %) Term."1" Term."3" Output volt.across term.1-2 Input volt. across term. 1-3 G 100 (%) V(vol.control)(3B) J J A(15A) When ordering product varieties that are not listed, specify referring to the examples below. Sample Part Number R K 2 7 1 1 2 A 0 S 2 5 C 0 A 1 0 4 Detent Model type Code 111 112 14A 12 A Model type Single unit Single unit, with detent Quad-unit for vol. Dual unit for vol. Shaft type Code F Shaft type Flat S Slotted Resistance taper Code A V Resistance taper 15A Total resistance Code 502 103 Total resistance （k Ω） Total resistance （k Ω） 100 Code 503 10 4 203 20 250254 Length of the shaft L1 （mm） Code Length of the shaft Code Detent Without Center Marked are specifications recommended by Alps. Note 27mm Size Metal Shaft Type / Ordering Products Not Listed

Metal Shaft Potentiometers Type 16mm size 20mm size 27mm size 50mm size Rotary motor-driven Series RK163 RK203/EC20A RK271 RK501 RK168 Single-shaft Number of resistor elements Single/dual Single Single/dual/quad Dual/quad Dual/quad/5-ganged/6-ganged Photo Terminal mounting Horizontal Vertical Horizontal Fixing method of bushing Bushing screw clamp Operating temperature range − 10℃ to ＋ 70℃RK203 ： −40℃ to ＋85℃ Operating life 1 5,000 cycles 30,000 cycles 1 5,000 cycles Available for automotive use — 〇 — — — Life cycle (availability) Electrical performance Total resistance （k Ω） 5, 10, 20, 50, 100, 200 10 5, 10, 20, 50, 100, 250 10, 20, 50, 100 Resistance taper 15A, 1B, 3B, 15C B 15A , 3B Rated Power 0.1W 0.05W （15A） 0.05W 0.1W 0.05W Residual resistance R≦10kΩ 20Ω max. 10kΩ＜R≦50kΩ 30Ω max. 50kΩ＜R＜3MΩ Nominal total resistance of 0.1% o r less % — R≦10kΩ 20Ω max. 10kΩ＜R＜50kΩ 30Ω max. 50kΩ≦R Nominal total resistance of 0.1% o r less % — — Maximum attenuation （Volume control） 5kΩ≦R＜ 10kΩ 7 0dB min. 10kΩ≦R＜ 50kΩ 8 0dB min. 50kΩ≦R＜100kΩ 9 0dB min. 0kΩ≦R 10 0dB min. 5kΩ≦R＜ 10kΩ 7 0dB min. 10kΩ≦R＜ 50kΩ 8 0dB min. 50kΩ≦R＜100kΩ 9 0dB min. 100kΩ≦R 100dB min. 120dB m in. 5kΩ≦R＜ 10kΩ 7 0dB min. 10kΩ≦R＜ 50kΩ 8 0dB min. 50kΩ≦R＜100kΩ 9 0dB min. 100kΩ≦R 100dB min. Gang error applicable to Dual-unit parts for audio volume control purposes −40dB to 0dB 3dB max. — − 70dB to −60dB 3dB max. −60dB to 0dB 2dB max. − 100dB to 0dB 2dB max. −60dB to −40dB 5dB max. −40dB to 0dB 3dB max. Insulation resistance 100MΩ min. 500V DC 10MΩ min. 250V DC 100MΩ min. 500V DC 100MΩ min. 250V DC Voltage proof 500V AC f or 1minute 300V AC f or 1minute 5 0 0V A C f or 1minute 300V AC f or 1minute Center-taps Without Mechanical performance Detent Without, Center, 21, 31, 41 17 Without, Center, 21, 31, 41 Without Push-pull strength 100N ma x . 1 50N max. 100N ma x . Vibration 10 to 55 to 10Hz/min., the amplitude is 1.5mm for all the frequencies, in the 3 direction of X, Y and Z for 2 hours respectively Shaft style Serrated type, Flat type, Slotted type Flat type Slotted type, Flat type Slotted type Flat type Terminal style Insertion, Lead Insertion Attached switch — EC20A: Momentary push switch — — — Page 332 337 340 344 346 Potentiometers Cautions Potentiometers Resistance Taper Note ○ Indicates applicability to some products in the series.

Reference for Manual Soldering Example of Reflow Soldering Condition Reference for Dip Soldering 300 200 100 A B C Time (s) G max. F max. H max. E max. Room temperature Temperature (˚C ) Pre-heating D Series Tip temperature Soldering time No. of solders RK09L, RK097 350℃ max. 3s max. 1 time RK203 300℃ max. 3s max. 1 time RK119 3 5 0 ±10 ℃ 3 s 1 time RK271 350℃ max. 5s max. 1 time RK501 3 5 0 ±10 ℃ 5 s 1 time RK163 350℃ max. 5s max. 1 time RK168 Potentiometer terminal 300℃ max. 3s max. 1 time Motor terminal 350℃ max. 2s max. 1 time Series Preheating Dip soldering No. of soldersSoldering surface temperature Heating time Soldering temperature Soldering time RK09L, RK097, RK203 100℃ ma x . 2 min. max. 260±5℃ 5±1s 2 time max. RK501 12 0 ±10 ℃ 2 min. max. 260±5℃ 5±1s 2 time Series A B C D E F G H No. of reflows RK119 260℃ 230℃ 180℃ 15 0 ℃ 2 min. 3s 40s 4 min. 2 time max. 1. When using an infrared reflow oven, solder may sometimes not be applied. Be sure to use a hot air reflow oven or at type that uses infrared rays in combination with hot air. 2. The temperatures given above are the maximum temperatures at the terminals of the potentiometer when employing a hot air reflow method. The temperature of the PC board and the surface temperature of the potentiometer may vary greatly depending on the PC board material, its size and thickness. Ensure that the surface temperature of the potentiometer does not rise to 250℃ or greater. 3. Conditions vary to some extent depending on the type of reflow bath used. Be sure to give due consideration to this prior to use. Notes Temperature profile Metal Shaft Potentiometers / Soldering Conditions