394
Metal
Shaft
Insulated
Shaft
Knob
Operating
Ring Type
Devices
Slide
Potentiometers
Rotary
Potentiometers
High performance 12mm wide type.
Typical Specifications
Items
Total resistance tolerance
Total rotational angle
Rotational torque
Operating life
Operating temperature range
Specifications
±20％
Maximum operating voltage
50VACforAConly300±5°2
to
15mN
・m
15,000cycles
−10℃
to
＋70℃
Refer to P.395 for product varieties.
Refer to P.395, 396, 470 for resistance taper.
Number of
resistor
elements
Mounting
direction
Vertical
type
Horizontal type
Vertical
type
Horizontal type
Shaft
type
Flat
Center
detent
Without
Without
With
Total
resistance
（kΩ）
50
50
10
10
10
20
50
10
20
1B
15A
1B
15A
RK12L1230C0K
RK12L1230C0T
RK12L1230C1M
RK12L123000E
RK12L1210C0R
RK12L12C0C0V
RK12L12C0A0E
RK12L12C0A0G
RK12L12C0A0A
RK12L12A0C0R
2,000
1,600
2,400
1,600
2
2
1
1
Resistance
taper
Products No.
Minimum
order unit
（pcs.）
Drawing
No.
Dual-unit
Product Line
20
30
25
30
15
25
30
For
tone
For vol.
Application
15C
15A
1. Products other than those listed in above products are also available. Please contact us for details.
2. Please place purchase orders per minimum order unit N (integer).
Notes
Length
of the shaft
LM1（mm）
Number of
resistor
elements
Mounting
direction
Vertical
type
Shaft
type
Flat
Center
detent
Without
With
Total
resistance
（kΩ）
20
15A
1B
RK12L12H0005
RK12L1270009
800
2
Resistance
taper
Products No.
Minimum
order unit
（pcs.）
Drawing
No.
Dual-unit
For the mixing console market
30
For vol.
For
tone
Application
Length
of the shaft
LM1（mm）
12mm Size Insulated Shaft Snap-in Type
RK12L Series
Insulated Shaft Potentiometer
Packing specifications
Tray
2,4001,200
Number of packages（pcs.）374×532×240
Export package
measurements
（mm）
1 case /Japan
1 case/export packing
15
2,0001,000
20
1,600800
25,30
Length of the
shaft LM1（mm）
395
Metal
Shaft
Insulated
Shaft
Knob
Operating
Ring Type
Devices
Slide
Potentiometers
Rotary
Potentiometers
12mm Size Insulated Shaft Snap-in Type Potentiometer
Product Varieties
In addition to the recommended products, the following specifications can also be accommodated.
Total Resistance Variety
Total resistance（kΩ）5 10 20 50 100 200
Resistance Taper
Shaft Variety
Dimensions
Terminal Layout/Circuit Diagram
Unit:mm
Unit:mm
Resistance taper 15A 1B 3B 15C
Style
Shaft
variety
LM115 20 25 30
R14.5 7 12 12
Vertical type Horizontal type
No.
1
2
Photo Style PC board mounting
hole dimensions
（Viewed from mounting side）
(14)
60˚
0.3
9.5
12
6
2.6
0.6
2
(3.5)
(3.2)
10
5.9
30
R3
(8.6)12
4.5
ø6
Shaft shown in
full CCW position
3.3
6
2
2
2.1
12.2
10
6-ø0.8 
holes
60˚
9.5
(13)
6
0.3
12
LM1
R3
5.4
4.5
(8.6)
2
0.6
(3.5)
R1
ø6
5.5
(3.2)
Shaft shown in
full CCW position
Mounting
surface
10
2.1
13
11
2
6
26-ø0.8 
holes
123
123
2
33
2
1
1
Outer
Inner
123
R1
R2 1 2 3
：：
Horizontal type without bushing
RK12L121
（For tone control）RK12L12A
（For vol. control）Vertical type without bushing
RK12L123
（For tone control）RK12L12C
（For vol. control）
LM120 25 30
R17
15
4.5 1212
Refer to P.396, 470 for resistance taper.
R1
LM1
RK12L12-RV14.EPS
R1
LM1
marked are specifications recommended by ALPS.
Note
396
Metal
Shaft
Insulated
Shaft
Knob
Operating
Ring Type
Devices
Slide
Potentiometers
Rotary
Potentiometers
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)
100
90
80
70
60
50
40
30
20
10
0102030405060708090
Output volt.across term.2-3
Input volt. across term. 1-3
100
C(15C)
G 100 (%)
J
Rotation travel (%) Term."1" Term."3"
J
Orders Other Than Recommended Products
When ordering product varieties that are not listed in the Product Line, please specify by referring to the below example.
Sample Part Number
R K 1 2 L 1 2 C 0 F 3 0 C 0 A 5 0 3
Detent
Model type
Code
1
3
Model type
Horizontal type for tone
A
Horizontal type for vol.
C
Vertical type for vol.
Vertical type for tone
Shaft type
Code
F
Shaft type
Flat
Resistance taper
＊Only available in flat format.
Length of the shaft（LM1）（mm）
Code
15
Length of the
shaft
15
20 20
Code
25
30
Length of the
shaft
25
30
Total resistance
Code
C0
C1
Center detent
Without
With
Code
A
B
Resistance
taper
15A
1B
Resistance
taper
15C
Code
C
3B
V
Code
502
103
203
Total resistance
（kΩ）
5
10
20
Total resistance
（kΩ）
50
100
200
Code
503
104
204
B: For tone & general（Model type : 1,3）V: For vol.（Model type : A,C）marked are specifications recommended by ALPS.
Note
12mm Size Insulated Shaft Snap-in Type Potentiometer
〇marks in "Available for automotive use" indicate that some of the series products can work at the operating
temperature range from -40℃to +85℃.
Note
383
Metal
Shaft
Insulated
Shaft
Knob
Operating
Ring Type
Devices
Slide
Potentiometers
Rotary
Potentiometers
List of Varieties
●InsulatedShaftPotentiometersCautions……………………………………………………………………………404,405
9mm Size
Insulated
shaft Long-
life
−30±2℃for 240h
70±2℃for 240h
Type
Model
Items
Electrical performanceElectrical Mechanical
performance
Environmental
performance
Total
resistance tolerance
±30％Maximum operating voltage 50V AC
5V DC
Insulation resistance
Voltage proof
Gang error
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 and for 2 hours respectively
Cold
Dry heat
Damp heat
40±2℃, 90 to95%
RH for 240h
Resistance to
soldering
heat
Manual soldering
350℃max. 3s max.
Strength of
the actuator
Stopper strength
Push-pull strength
30N max.
100MΩmin. 250V DC
250V AC
for 1minute
RK09Y11L
Dip Soldering
Page 401
Bushing Without
Photo
Single-unit
12mm Size
Insulated shaft
Snap-in
−40±3℃for 96h
85±3℃for 96h
±20％50V AC
20V DC
40±2℃, 90 to95％RH for 96h
0.5N・m
80N max.
300V AC
for 1minute
RK12L115
402
With
12mmSize
Insulated
Shaft
Snap-in
70±2℃for 240h
9mm Size Insulated
Shaft Snap-in
11mm Size
Insulated
Shaft
Snap-in
RK09K11□RK09D11□
RK12L12□RK14K12□Single-unit
RK09K12□Dual-unit
±20％±30％±20％50V AC
20V DC
50V AC
For AC only
50V AC
20V DC 50V AC For AC only
100MΩmin. 250V DC
100MΩmin.
500V DC
250V AC
for 1minute
500V AC
for 1minute
300V AC
for 1minute
−40dB to
0dB
3dB max.
Volume control
ｰ40dB to 0dB 3dB max.
For tone control
within 2dB at center
−30±2℃for 96h
70±2℃for 96h
40±2℃, 90 to95% RH for 96h
0.3N・m
Without bushing
0.5N・m
With bushing
0.6N・m
50N max. 80N max.
Single-unit
RK11K11□0.5N・m
Dual-unit
14mm Size
Insulated
Shaft
Snap-in
0.6N・m
260℃max.
5s max.
384 390 394 397
Without With/With
out Without With/With
out
Operating temperature range −40℃to＋85℃−10℃ to ＋70℃Automotive use
〇
70±2℃for 96h
Insulated Shaft Potentiometers