Ring Type Potentiometers List of Varieties Type 39mm size Series 45mm size RK39A RK45B RK45C Single-unit Single-unit Single-unit Photo Features 39 45 D 39.5 45.5 H 8.5 9.5 Operating temperature range −40℃ to ＋85℃ Operating life 30,000 cycles Automotive use ● ● Slide Potentiometers W Rotary Potentiometers Dimensions （mm） LED illuminate ● Metal Metal Shaft Shaft Life cycle Resistance taper B Rated power 0.05W Insulation resistance 10MΩ min. 50V DC Voltage proof 50V AC for 1minute Knob Operating Knob Operating Detent torque 40±16mN･m 50±20mN･m 55±20mN･m 40±16mN･m 40±16mN･m Number of positions 6, 17 8, 17 17 Stopper strength 1N･m Push-pull strength 100N（Push） , 50N（Pull） 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 for 2 hours respectively Terminal type Page Ring Ring Type Type Mechanical performance 5 Insulated ShaftShaft Insulated Electrical performance Total resistance（k Ω） Insertion 384 385 Ring Type Potentiometers Soldering Conditions・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 386 Potentiometers Cautions・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 427 Potentiometers Measurement and Test Methods・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 429 Potentiometers Resistance Taper・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 431 Notes 1. The operating temperature range for automotive applications can be raised upon request. Please contact us for details. 2. ● Indicates applicability to all products in the series. 383