|  CARBON |  CARBON | Type | WH09 | WHE11 | Body Dimensions (mm) | 9mm (9.8 x 11) | 11mm (11 x 15.7) | Resistance Range | 500 OHM ~ 10M OHM | 10K OHM ~ 50K OHM | Resistance Tolerance | * * * * | ±20% | Resistance Taper | A,B,C (JIS) | B (JIS) | Power Rating | 0.05W @ 50° C | 0.05W | Max Operating Voltage | DC 20V, AC 50V | Rotational Noise | <47mV | Rotation Angle | 280° ±10° | 300° ±10° | Rotational Torque | 1 ~ 8mN.m | 3.5 ~ 50mN.m | Stopper Strength | * * * * | 350mN.m | Rotational Life | 10,000 turns | 5,000 turns | Temperature Range | -40°C to +85°C | Options/Comments | Horizontal or Vertical operation. | |  CARBON |  CARBON |  WIREWOUND | Type | WH122 | WHE14 | WH121 | Body Dimensions (mm) | 12mm (12.8x18.5) | 14mm (14x16.4) | 14.5x16.2 | Resistance Range | 470 OHM ~ 1M OHM | 5K OHM ~ 500K OHM | 470 OHM ~ 1M OHM | Resistance Tolerance | ±20% | ±20% | * * * * | Resistance Taper | A,B,C (JIS) | Power Rating | 0.033W(B), 0.016W(A,C) | 0.05W | 0.05W @ 50°C | Max Operating Voltage | DC 20V, AC 50V | 50V AC | DC 20V, AC 50V | Voltage Proof | 300V AC 1 min | 250V AC 1min | * * * * | Insulation Resistance | >100M OHM | 100M OHM | * * * * | Rotational Noise | <47mV | <47mV | <47mV | Rotation Angle | 300° ±10° | 300° ±5° | 300° ±10° | Rotational Torque | 2 ~ 20mN.m | * * * * | 2 ~ 20mN.m | Stopper Strength | 400mN.m | * * * * * | Rotational Life | 10,000 turns | Temperature Range | -40°C to +85°C | Options/Comments | Horizontal or Vertical operation | |