Copal M Series Wirewound Multiturn

Copal M Series, A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name.

Copal  potentiometers are used in various industrial equipment (industrial robots, injection molding machines, bank’s automatic teller machine), transportation equipment, computer peripheral devices, measuring instruments, and others for positioning and angle sensors, as well as for manual setting in communications equipment and measuring instruments.


  • Line-up includes products ranging from 3 to 10 turns
  • Cost-effective (M-22E10) in house comparison
  • Dial can be attached (M-22 series only)
  • RoHS compliant

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List of Part Number

No. of turn Nominal resistance value (Ω) Part Number
3 turns 100, 200, 500, 1k, 2k, 5k, 10k, 20k M-1303
5 turns M-1305
10 turns 100, 200, 500, 1k, 2k, 5k, 10k, 20k, 50k M-22S10


Item M-13 Series M-22 Series
M-1303 M-1305 M-22S10 M-22E10
Resistance torelance ± 5%
Independent linearity ± 0.5% ± 0.2%
End resistance, maximum 2 % or 4 Ω, whichever is greater 0.5 % or 1 Ω, whichever is greater
Effective electrical angle 1080° 1800° 3600°
Mechanical angle 1080°±10º 1800°±10º 3600°±10º
Power rating 0.75W 1W 2W
Dielectric strength 1000 1 min Vrms
Insulation resistance 1000 MΩ minimum (at DC 500 V)
Rotational torque 14.7 mN·m {150 gf·cm}   maximum 9.81 mN·m {100 gf·cm}  maximum
Strength of tighten screw 0.98 N·m {10 kgf·cm} maximum M-22E10-000:  0.784 N·m {8 kgf·cm}
M-22E10-050: 0.588 N·m {6 kgf·cm}
Stop strength 0.147 N·m {1.5 kgf·cm} maximum 0.196 N·m {2 kgf·cm} maximum
Peak noise 20 Ω maximum(at 4 min-1)
Temp. coefficient of resistance ± 50 ppm/°C
Operating temp. range −40 ~ 85 °C
Rotational life 15000 cycles 25000 cycles
Net weight Approx. 7 g Approx. 19 g Approx. 17 g
Protection grade IP40

Datasheet: Copal M Series Wirewound Multiturn Type Potentiometer


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