368368
Rotary
Potentiometers
Slide
Potentiometers
Metal
Shaft
Insulated
Shaft
Knob
Operating
Through
Shaft Type
Ring
Type
Compact type potentiometer suitable for volume
and tone controls
Without Knob Type
RK08H
RK08H123002K
Japan Export
Refer to P.371 for other specications.
Refer to P.371 for soldering conditions.
Refer to P.376 for ordering products not listed.
Length of the
shaft （mm）
1
4.5
1
1. Other varieties are also available. Refer to “Other Specifications” (P.371).
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.
Notes
Product Line
Number of
resistor elements
Mounting
direction
Vertical type
Back-to-back
mounting type
Vertical type
Back-to-back
mounting type
Vertical type
Center
detent
Without
Without
With
Total
resistance（kΩ）
50
10
1B
15 A
5
10
10
50
10
10 0
50
1B
15 A
1,0001,000
1
1
3
2
3
4
4
Resistance
taper
RK08H11100U3
RK08H11100UD
RK08H11100XC
RK08H1110A04
RK08H11100X7
RK08H1120A05
RK08H113003Q
RK08H113003G
RK08H12100GP
RK08H12100F3
RK08H122005A
Products No.
Minimum order unit （pcs.）
Drawing
No.
Single-unit
Dual-unit
Manual
Manual
Reflow
Reflow
Soldering
15 C
15 C
15 A
Packing Specifications
Reel size
Bulk / Taping
21.5
17.5
ø330
ø13 hole
Unit:mm
■Typical Specifications
Items Specifications
Total resistance tolerance
±30％
Maximum operating voltage
50V AC
20V DC （Single-unit only）
Total rotational angle
200°±10°
Rotational torque
1 to 10mN・m
0.5 to 10mN・m （Reflow type）
Operating life
Without detent　10,000 cycles
With detent　 5,000 cycles
Operating temperature range
−10℃ to ＋60℃
Soldering Packing
specifications
Number of packages （pcs.） Tape width
（mm）
Export package
measurements（mm）
1 reel
1 case /Japan
1 case /export packing
Manual
Bulk
ー5,000 10,000 ー5 2 8 × 3 6 9 ×17 8
Reflow
Taping
1,000 4,000 4,000 16 4 01×397×13 9
369369
Rotary
Potentiometers
Slide
Potentiometers
Metal
Shaft
Insulated
Shaft
Knob
Operating
Through
Shaft Type
Ring
Type
2
Vertical Type
Single-shaft, single-unit
RK08H1110
Dimensions Unit:mm
No. Photo Style
1
Vertical Type
Single-shaft, single-unit
RK08H1110
Single-shaft, dual-unit
RK08H1210
3
Back-to-back mounting type
Single-shaft, single-unit
RK08H1120
Single-shaft, dual-unit
RK08H1220
4
Reflow-type
Single-shaft, single-unit
RK08H1130
Single-shaft, dual-unit
RK08H1230
ø8.8
8.5
1.9
ø2.5
（ø1.2）hole
45ﾟ
Shaft shown
in full C.C.W. position
Mounting
surface
4.5 3.2
7.9
R4.4
3.2
C0.15
0.3
9.4
0.8
3.4
3
4.7
1
1.5
rk08h1110A04-RV15.EPS
45
˚
8.5
1.9
ø2.5
ø8.8
M1.4 G 0.3depth3.2
Shaft shown in full CCW position
1
0.3
4.4
1
1.5
3.2
C0.15
3.2
Mounting surface
R4.4
7.9
2.3
2
8.5
0.8
45˚
8.5
1.9
ø2.5
ø8.8
M1.4G0.3depth3.2
9.4
Shaft shown in full CCW position
3.2
1
0.3
4.7
1
1.5
3.2
Mounting surface
R4.4
7.9
0.8
2.2
2
C0.15
Shaft shown in full CCW position
1
3.2
C0.3
0.6
Mounting surface
0.1
0.1
3.05
7
ø1
1.5
0.8
45
˚
1.9
ø2.5
10
M1.4G0.3depth3.2
8.7
5
R5.2
C0.15
RK08H／Without Knob Type
370370
Rotary
Potentiometers
Slide
Potentiometers
Metal
Shaft
Insulated
Shaft
Knob
Operating
Through
Shaft Type
Ring
Type
3
2
1
Reflow-type (Viewed from mounting side) Unit:mm
Single-shaft, single-unit Single-shaft, dual-unit Single-shaft, dual-unit
（Resistance taper 15C）
Standard Specification Circuit Diagram
Single-shaft, single-unit Single-shaft, dual-unit Single-shaft, dual-unit
（Resistance taper 15C）
3
2
11
2
33
2
11
2
3
3
-
ø1 hole
90˚
XX
1.2
R4.7
1.2
9
1.5
Y
Viewed from
mounting side
2
1
3
1
2
3
Y
PC Board Mounting Hole Dimensions / Terminal Layout
Vertical type (Viewed from mounting side) Unit:mm
Single-shaft, single-unit Single-shaft, dual-unit Single-shaft, dual-unit
（Resistance taper 15C）
3
-
ø1 holeDummy 90˚
Y
1
3
XX
1.2
R4.7
1.2
9
1.5
Y
Viewed from
mounting side
2
Viewed from
mounting side
3
-
ø1 hole
90˚
XX
1.2
R4.7
1.2
9
1.5
Y
2
31
1
2
3
Y
Keep the DUMMY terminal open in the circuit.
Note
Back-to-back mounting type (Viewed from shaft side)
Shaded area: Solder land Shaded area: Solder land Shaded area: Solder land
Unit:mm
Single-shaft, single-unit Single-shaft, dual-unit
45˚
Y
0.8
4.8
Y
3
7
45˚
3.6
1
XX
1.5
2
1
1
5.9
8.3
2
-
ø1.2 hole
Dummy
Terminals
45˚
Y
0.8
4.8
Y
3
7
45˚
3.6
1
XX
1.5
2
1
1
5.9
8.3
2-ø1.2 hole
Terminals
1
2
3
45˚
Y
0.8
4.8
Y
3
7
45˚
3.6
1
XX
1.5
2
1
1
5.9
8.3
2-ø1.2 hole
Terminals
1
2
3
3
-
ø1 holeDummy 90˚
Y
1
3
XX
1.2
R4.4
8
Y
2
1.5
0.6
ø4.5 hole
3
-
ø1 hole
90˚
Y
1
XX
1.2
R4.4
0.6
8
Y
2
1.5
ø4.5 hole
3
1
2
3
Without Knob Type
RK08H
371371
Rotary
Potentiometers
Slide
Potentiometers
Metal
Shaft
Insulated
Shaft
Knob
Operating
Through
Shaft Type
Ring
Type
Center detent
Length of the shaft
Code Model type
In addition to the products listed, we can accommodate the follow specifications.
Total Resistance Variety
Total resistance（k Ω） 510 20 50 10 0
Resistance taper 15 A 1B 3B 15 C
Resistance Taper
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
Detent
Code
C0
C1
Without
With
Model type
111
112
Single-unit Vertical type
113 Single-unit Reflow type
121 Dual-unit Vertical type
Single-unit Back-to-back mounting type
12 2
12 3
Dual-unit Back-to-back mounting type
Dual-unit Reflow type
Resistance taper
Code
A
B
Resistance taper
15 A
1B
Resistance taper
15 C
3B
Code
C
V
Length of the shaft （mm）
Code
F1 1
F4 4.5
Total resistance
Code
502
10 3
203
Total resistance
（k Ω）
5
10
20
Total resistance
（k Ω）
50
10 0
ー
Code
503
10 4
ー
＊Only 1mm types are provided with the M1.4 tap screws.
＊Reflow soldering cannot be applied in the 4.5 mm type.
＊Detent can only be specified for non-reflow single-unit types.
100
90
80
70
60
50
40
30
20
10
0100908070605040302010
Rotation travel (%) Term."1" Term."3"
Output volt.across term.1-2
Input volt. across term. 1-3 G 100 (%)
B(1B)
V(vol.control)(3B)
J
J
A(15A)
G
J
J
　　　 Marked are specifications recommended by Alps Alpine.
Note
Without Knob Type / Other Specifications
Without Knob Type / Ordering Products Not Listed
367367
Rotary
Potentiometers
Slide
Potentiometers
Metal
Shaft
Insulated
Shaft
Knob
Operating
Through
Shaft Type
Ring
Type
List of Varieties
Knob Operating Type Potentiometers
Type Without knob type With knob type
Series
RK08H1 □1 RK08H1 □2 RK08H1 □3
RK10J1 □E RK10J1 □R
Single-unit/Dual-unit Single-unit/Dual-unit Single-unit/Dual-unit Single-unit/Dual-unit Single-unit/Dual-unit
Photo
Terminal orientation
Vertical Back-to-back
mounting Reflow type — —
Operating temperature range
−10℃ to +60℃
Operating life
Without detent　10,000 cycles
With detent　5,000 cycles 10,000 cycles
Automotive use
—————
Life cycle
Electrical
performance
Total resistance
（k Ω）
5, 10, 20, 50, 100 10, 20, 50, 100
Resistance taper
15A, 1B, 3B, 15C
Rated power
0.03W
Insulation resistance
——— 10 0 MΩ m i n. 10 0 V D C
Voltage proof
——— 10 0 V A C f o r 1mi n u t e
Mechanical
performance
Detent
Without / Center detent Without
Stopper strength
0 .1N 70mN･m
Push-pull strength
10 N 5N
Terminal style
Insertion Reflow Insertion Reflow
Page
368 372
Knob Operating Type Potentiometers Soldering Conditions ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 376
Potentiometers Cautions ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 418
Potentiometers Measurement and Test Methods ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 420
Potentiometers Resistance Taper ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 422
Maximum AttenuationResidual Resistance
Nominal total resistance ※ Residual resistance
100kΩ≧R≧50kΩ 0 .1% o r le s s
of nominal total resistance
50kΩ＞R＞10kΩ 30Ω or less
10 k Ω≧R 20Ω or less
Nominal total resistance Maximum attenuation
R ≧10 0 k Ω 90dB min.
100kΩ＞R≧50kΩ 80dB min.
50kΩ＞R≧10kΩ 70dB min.
10 k Ω＞ R 60dB min.
※ Applies only to products with
specified residual resistance
376376
Rotary
Potentiometers
Slide
Potentiometers
Metal
Shaft
Insulated
Shaft
Knob
Operating
Through
Shaft Type
Ring
Type
Knob Operating Type Potentiometers / Soldering Conditions
No. of reflows
No. of solders
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.
Notes
1 time
RK08H1□1, RK08H1□2, RK10J
Series
350℃ max. 3s max.
Tip temperature Soldering time
Reference for Manual Soldering
RK08H1□3, RK10J1□R 250℃ 3s 4 min. 2 time max.200℃ 2 min. 40s15 0 ℃ 15 0 ℃
Series
Example of Reflow Soldering Condition
300
200
100
A
B
C
Time (s)
G max.
F max.
H max.
E max.
Room
temperature
Temperature (˚C )
Pre-heating
D
Temperature profile
DA B C E GF H