RK08H Without Knob Type Compact type potentiometer suitable for volume and tone controls ■ Typical Specifications Items Specifications Total resistance tolerance ±30％ 50V AC 20V DC（Single-unit only） Maximum operating voltage 200°±10° 1 to 10mN・m 0.5 to 10mN・m（Reflow type） Rotational torque Operating temperature range −10℃ to ＋60℃ Slide Potentiometers Without detent 10,000 cycles With detent 5,000 cycles Operating life Rotary Potentiometers Total rotational angle Product Line Number of resistor elements Mounting direction Length of the shaft（mm） Center detent Total Resistance resistance（kΩ） taper Soldering Minimum order unit（pcs.） Japan Export RK08H11100UD 1B 1 Vertical type 100 100 RK08H1110A04 15A Single-unit With 10 4.5 5 1B Without 10 Reflow 1,000 15C Manual 100 100 — Back-to-back mounting type 15A 50 Vertical type 3 RK08H113003Q 4 15C Reflow 1,000 1,000 1 RK08H12100F3 RK08H122005A 3 RK08H123002K 4 Ring Type 10 RK08H1120A05 RK08H12100GP 15A 1 2 RK08H113003G 50 Vertical type Dual-unit 1,000 RK08H11100X7 Knob Operating Back-to-back mounting type 1 RK08H11100XC Insulated Shaft Manual 100 Metal Shaft 10 Drawing No. RK08H11100U3 50 Without Products No. Notes 1. Other varieties are also available. Refer to“Other Specifications”(P.376). 2. Dip soldering can be applied to the above products. Please specify if required Back-to-back mounting types are excluded. 3. We recommend print boards with a thickness of 0.8mm to 1.2mm. For 1.6mm thickness board applications, please contact us. Packing Specifications Bulk / Taping Unit:mm Number of packages（pcs.） Export package Tape width 1 case /Japan 1 case /export packing （mm） measurements（mm） Soldering Packing specifications 1 reel Manual Bulk ー 5,000 10,000 ー 368×530×180 Reflow Taping 1,000 4,000 4,000 16 397×401×139 Reel size ø330 17.5 ø13 hole 21.5 Refer to P.376 for other specifications. Refer to P.376 for soldering conditions. Refer to P.382 for ordering products not listed. 373 RK08H Without Knob Type Dimensions Photo Style 45˚ 0.3 ø2.5 C0.15 M1.4G0.3depth3.2 3.2 Slide Potentiometers 2.2 R4 .4 7.9 Mounting surface 2 Shaft shown in full CCW position 1 ø8.8 4.7 9 1 3.2 1 8.5 1. 0.8 9.4 4.5 3.2 1. 4.7 45ﾟ 8.5 ø2.5 0.3 Vertical Type Single-shaft, single-unit RK08H1110 ø8.8 Metal Shaft 9 Shaft shown in full C.C.W. position .15 C0 （ø1.2）hole 2 R4 1 1.5 Rotary Potentiometers Vertical Type Single-shaft, single-unit RK08H1110 Single-shaft, dual-unit RK08H1210 1.5 No. Unit:mm 3.2 .4 7.9 3.4 3 Insulated Shaft Mounting surface 9.4 45˚ 0.3 Mounting surface 2.3 2 Shaft shown in full CCW position 0.8 1 ø8.8 C0.15 M1.4 G 0.3depth3.2 7.9 3.2 R4 .4 8.5 rk08h1110A04-RV15.EPS 45˚ 8.7 1 ø2.5 3.2 0.1 0.8 9 1. M1.4G0.3depth3.2 R 2 5. 0.1 Shaft shown in full CCW position 374 C0.15 3.05 0.6 Mounting surface 1.5 4 5 10 C0.3 7 ø1 Reflow-type Single-shaft, single-unit RK08H1130 Single-shaft, dual-unit RK08H1230 4.4 9 Ring Type 3 3.2 1 1. ø2.5 8.5 1.5 Knob Operating Back-to-back mounting type Single-shaft, single-unit RK08H1120 Single-shaft, dual-unit RK08H1220 0.8 RK08H／Without Knob Type PC Board Mounting Hole Dimensions / Terminal Layout Vertical type (Viewed from mounting side) 1.2 1.2 Y X 1 X 1.5 Viewed from mounting side 2 3 Viewed from mounting side 9 2 1.2 2 Y R4.7 X 1 3 3 1 X Viewed from mounting side 9 2 1.2 2 Y X 9 0.6 Y 8 3 1 1 X X Viewed from shaft side ø4.5 hole 0.6 2 Y X 2 Metal Shaft 2 1.2 X 3 R4.4 1.5 1 3-ø1 hole 90˚ Y 3 R4.4 Viewed from shaft side 3-ø1 hole 1.2 90˚ Y 1.5 Dummy Unit:mm Single-shaft, dual-unit 8 ø4.5 hole Dummy Shaded areas are solder lands. 45 ˚ 7 1 X Y 2 Terminals Shaded areas are solder lands. 2 5.9 8.3 3.6 4.8 0.8 3 1 X 1 3 Y 1 X 2 5.9 8.3 Terminals 2-ø1.2 hole 1.5 Y 45 3.6 4.8 0.8 1 1 X 2 ˚ ˚ 1 X 3 3 45 Ring Type Terminals Y 5.9 8.3 2-ø1.2 hole 7 1 2 0.8 1 Y 1.5 1.5 X ˚ 45 ˚ 3.6 4.8 3 45 1 7 1 2-ø1.2 hole Y Knob Operating ˚ 45 Unit:mm Single-shaft, dual-unit （Resistance taper 15C） Single-shaft, dual-unit Insulated Shaft Reflow-type (Viewed from mounting side) Single-shaft, single-unit Slide Potentiometers Back-to-back mounting type (Viewed from shaft side) Single-shaft, single-unit Rotary Potentiometers X 1 3 R4.7 3-ø1 hole 90˚ Y 1.2 1 3 R4.7 3-ø1 hole 90˚ Y 1.5 3-ø1 hole 90˚ Y 1.5 Dummy Unit:mm Single-shaft, dual-unit （Resistance taper 15C） Single-shaft, dual-unit 1.2 Single-shaft, single-unit Shaded areas are solder lands. Note Keep the DUMMY terminal open in the circuit. Standard Specification Circuit Diagram Single-shaft, single-unit Single-shaft, dual-unit （Resistance taper 15C） Single-shaft, dual-unit 3 3 2 3 2 3 3 2 2 1 1 1 2 1 1 375 Without Knob Type / Other Specifications In addition to the products listed, we can accommodate the follow specifications. Total Resistance Variety Total resistance（k Ω） 5 10 20 50 100 Resistance Taper Resistance taper 15A 1B 3B 15C Rotary Potentiometers Without Knob Type / Ordering Products Not Listed Slide Potentiometers When ordering product varieties that are not listed, specify referring to the examples below. Sample Part Number R K 0 8 H 1 1 1 0 F 1 C 0 B 1 0 3 Model type Metal Shaft Code Model type 111 Single-unit Vertical type 112 Single-unit Back-to-back mounting type Insulated Shaft Knob Operating 113 Single-unit Reflow type 121 Dual-unit Vertical type 122 Dual-unit Back-to-back mounting type 123 Dual-unit Reflow type Length of the shaft（mm） Ring Type Code Length of the shaft F1 1 F4 4.5 ＊Only 1mm types are provided with the M1.4 tap screws. ＊Reflow soldering cannot be applied in the 4.5 mm type. Detent C 15C B 1B V 3B G 100 (%) J G ) 15A 30 1B A 40 20 10 0 10 Term."1" Total resistance Code Total resistance （k Ω） Code Total resistance （k Ω） 502 5 503 50 103 10 104 100 203 20 ー ー Note Marked are specifications recommended by ALPS. 376 3B ) Resistance taper 50 B( Code 60 A) 15 l)( Resistance taper 70 A( tro Code Output volt.across term.1-2 Resistance taper Input volt. across term. 1-3 ＊Detent can only be specified for non-reflow single-unit types. 80 on With .c C1 90 ol Without (v C0 100 V Center detent J Code 20 30 40 50 60 Rotation travel (%) 70 J 80 90 100 Term."3" J Knob Operating Type Potentiometers List of Varieties Type Series Without knob type RK08H1 □ 1 RK08H1 □ 2 With knob type RK08H1 □ 3 RK10J1 □ E RK10J1 □ R RK14J1 □ A RK14J1 □ R Single-unit/Dual-unit Single-unit/Dual-unit Single-unit/Dual-unit Single-unit/Dual-unit Single-unit/Dual-unit Single-unit/Dual-unit Single-unit/Dual-unit Photo Terminal orientation Vertical Rotary Potentiometers Back-to-back mounting Operating temperature range Operating life Slide Potentiometers Automotive use Reflow type — — — −10℃ to +60℃ −25℃ to +70℃ Without detent 10,000 cycles With detent 5,000 cycles — — — — 10,000 cycles — — — — Life cycle Total resistance （k Ω） 10, 20, 50, 100 Metal Shaft Resistance taper 15A, 1B, 3B, 15C Rated power 0.03W Electrical performance Insulated Shaft Knob Operating Mechanical performance 5, 10, 20, 50, 100 Insulation resistance — — — 100MΩ min. 100V DC Voltage proof — — — 100V AC for 1minute Detent Without / Center detent Without Stopper strength 0.1N 70mN･m Push-pull strength 10N 5N Vibration Ring Type Terminal style Page Residual Resistance — — Insertion — — — Reflow Insertion Reflow 373 ※ Applies only to products with specified residual resistance ※ Insertion 377 Maximum Attenuation Nominal total resistance ※ Residual resistance Nominal total resistance Maximum attenuation 100kΩ≧R≧50kΩ 0.1% or less of nominal total resistance R≧100kΩ 90dB min. 50kΩ＞R＞10kΩ 30Ω or less 100kΩ＞R≧50kΩ 80dB min. 10kΩ≧R 20Ω or less 50kΩ＞R≧10kΩ 70dB min. 10kΩ＞R 60dB min. Knob Operating Potentiometers Potentiometers Potentiometers Type Potentiometers Soldering Conditions・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 382 Cautions・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 427 Measurement and Test Methods・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 429 Resistance Taper・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 431 ※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 372 Reflow Knob Operating Type Potentiometers / Soldering Conditions Reference for Manual Soldering Series Tip temperature Soldering time No. of solders RK08H1□1, RK08H1□2, RK10J, RK14J 350℃ max. 3s max. 1 time Reference for Dip Soldering Preheating Series Rotary Potentiometers RK14J1□A Dip soldering Soldering surface temperature Heating time Soldering temperature Soldering time 80 to 120℃ 70±30s 260℃±5℃ 4±1s No. of solders 1 time 300 Metal Shaft Temperature (˚C ) Slide Potentiometers Example of Reflow Soldering Condition Temperature profile A B 200 C D 100 Insulated Shaft Room temperature Time (s) Pre-heating E max. F max. Knob Operating G max. H max. Ring Type Series A B C D E F G H No. of reflows RK08H1□3, RK10J1□R, RK14J1□R 250℃ 200℃ 150℃ 150℃ 2 min. 3s 40s 4 min. 2 time max. Notes 1. When using an infrared reflow oven, solder may sometimes not be applied. Be sure to use a hot air reflow oven or a 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. 382