Metal Shaft Potentiometer
50mm Size Metal Shaft High-quality-audio Type
RK50
Series
High sound quality, good response and high grade for high end audio devices.
Rotary
Potentiometers
Slide
Potentiometers
Typical Specifications
Items
Total resistance tolerance
Maximum operating voltage
Total rotational angle
Rotational torque
Operating life
Operating temperature range
Specifications
±20％
150V AC
300±3°
13 to 43mN m
・
15,000cycles
−
10℃ to
＋
70℃
Metal
Shaft
Insulated
Shaft
Knob
Operating
Product Line
Number of
resistor
elements
Dual-unit
Quad-unit
Mounting
direction
Shaft
type
Length of
the shaft
（mm）
25
Slotted
30
Without
50
Center
detent
Total
resistance
（kΩ）
100
Resistance
taper
Minimum
order unit
（pcs.）
Products No.
RK50112A0004
Drawing
No.
1
2
Horizontal
type
15A
1
RK50114A0001
Dimensions
No.
Photo
Single-shaft, dual-unit
RK50112
38
34.4
25
10
1.6
1
ø8
Not specified
slotting angle
Unit:mm
Style
Circuit
diagram
3
2
4
ø12
1 1
1
Mounting
surface
14
27
10
11.5
5 5 55
10-ø1.2 holes
Mounting hole detail
viewed from mounting side
Circuit
diagram
3
2
4
1 1
Mounting
surface
27
10 10 10 11.5
5 5 55
20-ø1.2 holes
Mounting hole detail
viewed from mounting side
ø4
1
1
q
2 3 4
29.9
C0.5
M12x0.75
3.5
ø4
1
q
2 34
29.9
4
Not specified
slotting angle
4
1
Single-shaft, quad.-unit
RK50114
58
54.4
30
10
1.6
1
ø8
0.5
C0.5
M12G0.75
3.5
14
2
358
ø12
50mm Size Metal Shaft Type Potentiometer
Product Varieties
In addition to the recommended products, the following specifications can also be accommodated.
Total Resistance Variety
Total resistance
（kΩ）
10
20
50
100
250
Rotary
Potentiometers
Slide
Potentiometers
Resistance Taper
Resistance taper
15A
3B
Dimensions of Shaft
Slotted type
L
1
10
1.6
1
Unit:mm
Not specified slotting angle
L
1
20
25
¿8
Metal
Shaft
Insulated
Shaft
Knob
Operating
30
40
M12
G
0.75
C0.5
Note
marked are specifications recommended by ALPS.
Refer to
P.502
for resistance taper.
359
Metal Shaft Potentiometers
List of Varieties
Type
Number of drive shafts
Model
RK203 / EC20A
RK2711
20mm size
metal shaft
27mm size
metal shaft
50mm size
metal shaft high-
quality-audio
Single-shaft
RK5011□A
Rotary motor-driven
Rotary
Potentiometers
Slide
Potentiometers
RK1681□ / MG0
RK2711□MC0
Photo
The bushing
Fixing method of bushing
fastened by use can be
of screws Bushing screw clamp
The bushing can be fastened by use of screws
Horizontal type
Without
Terminal mounting
Attached switch
Gang error applicable to
Dual-unit parts for audio
volume control purposes
Metal
Shaft
Insulated
Shaft
Knob
Operating
Solder heat
resistance
Electrical performance
Mechanical
performance
Environmental
performance
Manual
soldering
Dip soldering
Reflow soldering
Vertical type
−60dB
to 0dB
3dB max.
300℃ max. 3s
max.
260±5℃, 5±1s
350℃ max. 5s
max.
−100dB
to 0dB
2dB max.
350±10℃, 5
＋1
0
−40dB
to 0dB
3dB max.
−60dB
to 0dB
3dB max.
s
350℃ max. 3s max.
350℃ max. 5s max.
Motor terminal
: 350$max 2s max. Motor terminal:350℃ max. 2s max.
260±5℃, 5±1s
Operating temperature range
Rated power
Residual
resistance
Maximum
attenuation
（Volume
control）
Insulation
resistance
Voltage proof
Stopper strength
・
（N
m）
−30℃
to
＋80℃
0.05W
R≦10kΩ 20Ωmax.
10kΩ＜R≦50kΩ 30Ωmax.
50kΩ＜R
Nominal total resistance of 0.1% or less
5kΩ≦R＜ 10kΩ 70dB min.
10kΩ≦R＜ 50kΩ 80dB min.
50kΩ≦R＜100kΩ 90dB min.
100kΩ≦R
100dB min.
100MΩ min. 250V DC
300V AC
for 1minute
0.5
100N max.
−10℃
to
＋70℃
0.1W
0.05W
R≦10kΩ
20Ωmax.
10kΩ＜R≦50kΩ 30Ωmax.
50kΩ＜R
Nominal total resistance of 0.1% or less
5kΩ
≦R＜
10kΩ
≦R＜
50kΩ
≦R＜
100kΩ
≦R
10kΩ
50kΩ
100kΩ
70dB min.
80dB min.
90dB min.
100dB min.
120dB min.
100MΩ min. 500V DC
500V AC for 1minute
0.9
1.5
150N max.
100MΩ min. 250V DC 100MΩ min. 500V DC
300V AC
for 1minute
0.9
100N max.
500V AC
for 1minute
Push-pull strength
Vibration
Cold
Dry heat
Damp heat
Page
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
−40±2℃
for 192h
−30±3℃
for 96h
−20±3℃
for 240h
85±2℃ for 192h
70±2℃ for 96h
70±2℃ for 240h
−20±2
for 96h
−30±3℃
for 96h
70±2℃ for 96h
40±2℃,
90
to
95％RH for 96h
360
60±3℃,
40±2℃,
60±2℃,
90 to 95％RH for 240h 90 to 95％RH for 96h 90
to
95％RH for 240h
352
354
358
●
Metal Shaft Potentiometers Attached Parts ………………………………………………………………………………363
●
Metal Shaft Potentiometers Cautions …………………………………………………………………………………364, 365
322
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