
High performance 12mm width type.
Improved cross talk and gang error characteristics achieved by enhanced
structural design.
R-shaped shaft end point makes knob insertion smooth.
Terminal layout contributes in reducing solder bridging.
●
●
●
Features
For volume, tone and balance adjustments in audio equipment
For various control in DVD players/recorders, mixing consoles and
electronic musical instruments
●
●
Applications
Typical Specifications
Items
Total resistance tolerance
Total rotational angle
Rotational torque
Operating life
Operating temperature range
Specifications
±20%
Maximum operating voltage
50VACforAConly
300±5°
2
to
15mN・m
15,000cycles
−10℃
to
+70℃
Refer to P.75 for product varieties.
Refer to
P.78 for product specifications.
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
100
2
2
1
1
Resistance
taper
Products No.
Minimum
packing unit
(pcs.)
Drawing
No.
Dual-unit
Recommended Products List
20
30
25
30
15
25
30
For
tone
For vol.
Application
15C
15A
Products other than those listed in above recommended product are also available. Please contact us for details.
Note
Length
of the shaft
LM1(mm)
12mm Size Insulated Shaft Snap-in Type
RK12L
Series
Insulated Shaft Potentiometer
74
Metal
Shaft
Rotary
Potentiometers
Slide
Potentiometers
Multi Control
Devices
Sensors
Insulated
Shaft
Hollow
Type
Knob
Operating

75
Metal
Shaft
Rotary
Potentiometers
Slide
Potentiometers
Multi Control
Devices
Sensors
Insulated
Shaft
Hollow
Type
Knob
Operating
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
LM
1
15 20 25 30
R
1
4.5 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
LM
1
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
2
6-ø0.8
holes
123
123
2
3
3
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
)
LM1
20 25 30
R1
7
15
4.5
12 12
Refer to P.76, 211 for resistance taper.
marked are specifications recommended by ALPS.
Note
12mm Size Insulated Shaft Snap-in Type Potentiometer

12mm Size Insulated Shaft Snap-in Type Potentiometer
Orders Other Than Recommended Products
When ordering product varieties that are not listed in the Recommended Product list, please speficy by referring to the below example.
Sample Part Number
Rotary
Potentiometers
Slide
Potentiometers
Multi Control
Devices
Sensors
R K 1 2 L 1 2 C 0 F 3 0 C 0 A 5 0 3
Model type
Code
1
3
A
C
Model type
Horizontal type for tone
Vertical type for tone
Horizontal type for vol.
Vertical type for vol.
Metal
Shaft
Insulated
Shaft
Hollow
Type
Knob
Operating
Shaft type
Code
F
Shaft type
Flat
*Only available in flat format.
Length of the shaft(LM1)(mm)
Code
15
20
Length of the
shaft
15
20
Code
25
30
Length of the
shaft
25
30
Detent
Code
C0
C1
Center detent
Without
With
Resistance taper
Code
A
B
Resistance
taper
15A
1B
Code
C
V
Resistance
taper
15C
3B
B: For tone & general(Model type : 1,3)
V: For vol.(Model type : A,C)
Total resistance
Code
502
103
203
Total resistance
(kΩ)
5
10
20
Code
503
104
204
Total resistance
(kΩ)
50
100
200
100
J
90
80
70
100 (%)
G
60
50
40
30
20
10
Output volt.across term.1-2
Input volt. across term. 1-3
0
)
B
B(1B)
l)(3
tro
n
o
l.c
o
(v
V
Rotation travel (
A(15A)
%) Term."1" Term."3"
J
100
J
90
80
70
100 (%)
G
60
50
40
30
20
10
Output volt.across term.2-3
Input volt. across term. 1-3
100
100908070605040302010
C(15C)
Rotation travel (%) Term."1" Term."3"
J
0102030405060708090
76
Note
marked are specifications recommended by ALPS.

12mmSize
Insulated
Shaft
Snap-in
RK12L12□
Dual-unit
Type
Model
Items
Mechanical
performance
Product Specifications
Operating temperature range
Electrical
performance
Endurance
Environmental
performance
Total
resistance tolerance
Rated power
−10℃to+70℃
9mm Size Insulated
Shaft Snap-in
11mm Size
Insulated
Shaft
Snap-in
RK09K11□
RK09D11□
RK11K11□
Single-unit
RK09K12□
Dual-unit Single-unit
14mm Size
Insulated
Shaft
Snap-in
RK14K12□
Dual-unit
±20% ±30% ±20%
0.05W 0.03W 0.05W
Maximum
operating voltage
50V AC
20V DC
50V AC
For AC only
50V AC
20V DC
50V AC
For AC only
Insulation
resistance
100MΩ min.
250V DC
100MΩ min.
500V DC
100MΩ min.
250V DC
Voltage proof
250V AC
(for 1minute)
500V AC
(for 1minute
)
300V AC
(for 1minute)
Gang error
−40dB to
0dB
3dB max.
Volume control
ー40dB to 0dB 3dB max.
For tone control
within 2dB at center
Total
rotational angle
RK09K : 280±5°
RK09D11□:300±5°
300±5°
Rotational torque
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
Operating life
Single-unit : 5,000cycles
Dual-unit : 10,000cycles
Cold
−30±2℃ for 96h
Dry heat
70±2℃ for 96h 70±2℃ for 240h
Damp heat
40±2℃, 90 to 95% RH for 96h
Resistance
to soldering
heat
Manual
soldering
Dip
Soldering
350℃ max. 3s max.
260℃ max.
5s max.
15,000cycles
1 to 8mN・m 3 to 20mN・m 2 to 15mN・m
Strength
of the
actuator
Stopper
strength
Push-pull
strength
0.3N・m
Without bushing
0.5N・m
With bushing
0.6N・m
0.6N・m 0.5N・m
50N max. 80N max.
Insulated Shaft Potentiometers
78
Metal
Shaft
Rotary
Potentiometers
Slide
Potentiometers
Multi Control
Devices
Sensors
Insulated
Shaft
Hollow
Type
Knob
Operating
9mm Size
Insulated
shaft Long-
life
RK09Y11L
Single-unit
±30%
0.01W
50V AC
5V DC
250V AC
(for 1minute
)
1,000,000
cycles
−30±2℃
for 240h
40℃, 90 to 95%
RH for 240h
5mN・m
max.
30N max.