Features Applications n RoHS compliant* n Test and measurement equipment n CW or CCW rotary switch n Avionics controls n Linear and audio tapers n Communications equipment n PC board and bushing mount n Medical laboratory equipment n Splash seal n Metal bushing and shaft 56 Sealed 1/2 (12.5 mm) Panel Control w/Rotary Switch 1 Electrical Characteristics Standard Resistance Range Linear 1K to 500K ohms Audio 1K to 500K ohms Total Resistance Tolerance B & D Tapers 20 % E & S Tapers 10 % Independent Linearity 5 % Absolute Minimum Resistance 2 ohms maximum Effective Electrical Angle 240 5 Contact Resistance Variation 2 % Dielectric Withstanding Voltage (MIL-STD-202, Method 301) Sea Level 1,500 VAC minimum 70,000 500 VAC minimum Insulation Resistance 1,000 megohms minimum Power Rating At 70 C (Derate To 0 At 125 C) (Voltage Limited By Power Dissipation or 350 VAC, Whichever Is Less) Linear Tapers 05 watt Audio Tapers 025 watt Theoretical Resolution Essentially infinite 1 Environmental Characteristics Operating Temperature Range +1 C to +125 C Storage Temperature Range -55 C to +125 C Temperature Coefficient Over Storage Temperature Range 1,000 ppm/C Vibration 8 G Total Resistance Shift 2 % maximum Voltage Ratio Shift 5 % maximum Shock 20 G Total Resistance Shift +2 % maximum Voltage Ratio Shift 5 % maximum Load Life 1,000 hours Total Resistance Shift 10 % TRS maximum Rotational Life (No Load) 50,000 cycles Total Resistance Shift 10 % TRS maximum Contact Resistance Variation 2 % Moisture Resistance (MIL-STD-202, Method 103, Condition B) B & E Taper 10 % TRS D & S Taper 20 % TRS IP Rating Entire Unit IP64 Shaft/Bushing IP65 Mechanical Characteristics Stop Strength 56 N-cm (5 lb-in) Mechanical Angle 290 5 Torque Running/Starting 02 to 13 N-cm (0 25 to 20 oz-in) Mounting (Torque on Bushing) 17 to 2 0 N-m (15 to 18 lb-in) maximum Weight 85 grams Terminals PC pin Soldering Condition Recommended hand soldering using Sn95/Ag5 no clean solder, 0.025 wire diameter. Maximum temperature 399 C (750 F) for 3 seconds No wash process to be used with no clean flux Part can be wave soldered at 260 C (500 F) for 5 seconds, no wash process with no clean flux Marking Manufacturers trademark, part number, resistance value and date code. Ganging (Multiple Section Potentiometers and Switches) Inquire for availability, minimum order quantity and price Hardware Locking bushing versions are shipped with one additional locking nut (Bushing A: H-37-2 & H-38-2 Bushing C: H-37-1 & H-38-1) 1 Electrical specifications tested at 200 RPM, at room ambient: +25 C nominal *RoHS Directive 2015/863, Mar 31, 2015 and Annex. WARNING Specifications are subject to change without notice. Users should verify actual device performance in their specific Cancer and Reproductive Harm applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the www.P65Warnings.ca.gov last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.56 Sealed 1/2 (12.5 mm) Panel Control w/Rotary Switch Initial Electrical Characteristics - Switch Switch Type SPDT (Break before make) Power Rating (Resistive Load) 0 5 A 30 VDC Dielectric Withstanding Voltage (MIL-STD-202, Method 301) Sea Level 1000 VAC minimum Insulation Resistance 1000 megohms minimum Contact Resistance 30 milliohms maximum Contact Bounce 5 milliseconds maximum Actuation Angle 35 maximum Switch Travel 25 maximum Detent Torque 1 3 N-cm (2 0 oz -in) nominal 1 Environmental Characteristics Vibration 8 G Contact Resistance 30 milliohms maximum Contact Bounce 0 1 milliseconds maximum Shock 20 G Contact Resistance 30 milliohms maximum Contact Bounce 0 1 milliseconds maximum Rotational Life Rated Power 50,000 cycles Contact Resistance 100 milliohms maximum Moisture Resistance (MIL-STD-202, Method 103, Condition B) Contact Resistance 30 milliohms maximum Insulation Resistance (After 24 Hours Room Temperature - 500 VDC) 100 megohms minimum 1 Electrical specifications tested at 200 RPM, at room ambient: +25 C nominal Hardware Date Code Description LOCKWASHER H-37-1 NUT H-38-1 YYWWM 6.6 9.53 +0/-0.38 2.36 0.25 (.26) (.375 +0/-.015) (.093 .01) M = COUNTRY OF MANUFACTURE (MEXICO) 1/4-32 UNEF WW = WEEK NUMBER YY = LAST TWO DIGITS OF YEAR MANUFACTURED 12.07 0.25 0.64 0.05 30 5 11 +0/-0.43 (.475 .01) (.025 .002) TYP. (.433 +0/-.017) LOCKWASHER H-37-2 NUT H-38-2 9.58 0.36 2.36 0.25 (.377 .014) (.093 .01) 3/8-32 NEF-2B 12.52 0.36 0.56 0.05 30 5 14.66 +0/-0.43 (.493 .014) (.022 .002) (.577 +0/-.017) MM DIMENSIONS: (INCHES) Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.