aA elle le) 8 Conductive Plastic Panel Potentiometers Features eSimple Degign. sisciiwiine cee @ Immersion Sealed ...............05> @ All-Plastic Construction Available Conductive Plastic Element Benefits = Cost Effective = Washable @ Cost Effective =# Smooth Low Torque WAtenGstONG: = iscsi watine ei 8 Versatility SPECIFICATIONS General Temperature range -55 to + 125C. TAPER | TOTAL RESISTANCE RANGE Total resistance values 250 ohms to 1 megohm. Linear | 250 Ohms to 1.0 Megohms Total resistance tolerance +10%, +20%. Taper Linear taper standard. For special tapers, consult factory. Electrical See chart on Page 73 for explanation of taper. Linearity +5% independent (linear taper), 250 ohms through 1 Meg. End resistance 2 ohms maximum, Power 0.5 Watt at 70C, for linear taper, provided voltage is not exceeded, Power derating Derate power linearly fram + 70C to zero at + 125C. For rheostat applications derate power directly with shaft position. Voltage 350 volts maximum working voltage (RMS or DC), or as determined by Emax. = PR, whichever is less (at sea level). 257 Dielectric withstanding voltage Maximum continuous voltage 350 volts (RMS or DC) at sea level. Will withstand a one second test of 1000 volts (RMS) at sea level, Insulation resistance 1000 megohms minimum for clean and dry conditions at + 25C.Operational Type 2000 Load life 10 percent maximum change in total resistance as a result of a 1000 hour test at rated power across entire element in still air at + 70C (1.5 hours ON, 0.5 hour OFF), Rotational life 10 percent maximum change in total resistance as a result of a 100,000 cycle life test. Mechanical Contact resistance variation Linear taper: maximum initial value is 1,0 percent or 3 ohms, whichever is greater, (After 100,000 mechanical cycles, 2% maximum chanae.} Shafts Plastic diameter of shafts .125 inch with plain shaft ending, or .250 inch with slotted shaft ending, Standard shaft lengths in inches: .125 inch dia, .50 inch, .625 inch; .750 inch; 250 inch dia. .375ineh, .625 inch, .750 inch. Allshaft lengths are measured from the mounting surface of the bushing to the free end of the shaft. Bushings .375 inch long, 375 inch dia. unthreaded plastic, and .250 inch longa by .250 inch diameter or 375 inch long by .375 inch diameter threaded metal. Turning torque Maximum 2 inch-ounces (14 mN-m) pot only at +25C, Mounting torque Torque applied to mounting nut should not exceed 8 inch-pounds (900 mN-m). Hardware Controls with threaded bushings are normally supplied as follows: .250 inch (6,35mm) diameter bushing with (1) M-4748 Lock Washer and (1) M-4721 Mounting Nut, .375 inch (9,52mm) diameter Environmental bushing with (1) M2898 Lock Washer and (1) M2786 Mounting Nut, All hardware shipped in bulk, not assembled unless othenmise specified. Stop torque Four inch-pounds (451 mN-m) minimum for 250 inch diameter shaft, 3 inch-pounds (338 mN-m) minimum for .125 inch diameter shaft. Rotation Mechanical travel 300 =5%%; electrical travel 240 (nominal), Terminals As shown on Page 261. Construction Materials are essentially corrosion resistant. Available with plastic shaft and a plastic or metal bushing, Marking Clarostat part number, nominal total resistance and ELA date code are marked in three lines. Other marking possible; 13 characters maximum in each of three lines. Type 2000" always included, Vibration 2 percent maximum change in total resistance. 5 percent maximum change in resistance setting. (Tested per method 204, condition "C of MIL-STD-202). Shock 2 percent maximum change in total resistance. 5 percent maximum change in resistance setting. (Tested per method 213, condition I of MIL-STD-202}, Humidity 10 percent maximum change in total resistance, (Method 103B, condition B of MIL-STD-202). Corrosion resistance Materials show no functionally harmful corrosion after the 96 hour test, (Methed 101 of MIL-STD-202). Effect of soldering 2 percent maximum change in total resistance. (Method 210A, condition E of MIL-STD-202.) SOLDER TEMPERATURES OVER 280C MAY PERMANENTLY DAMAGE THE POTENTIOMETERS, Temperature cycling 3 percent maximum change in total resistance as a result of the temperature cycling test. (Five cycles at -55C to +125C). Low temperature operation 3 percent maximum change in total resistance as a result of the low temperature operation test. (-55C for two hours without load and 45 minutes with rated load). Temperature characteristics Maximum percent temporary total resistance change from the + 25C value. See chart below, Nominal Degrees Celsius Linear Taper Resistance | 55|- 25) O [+ 25] 4 5514 85]+ 100% 120 250 =9.0)-6.0/-3.0] 0 | +3.5)/4+65/ +8.0] +10 1K $5.5 [| +3.0/=1.5 1.5 [23.0 | t4.0)25,0 10K +6.0/4+3.0 [21.5 2.0 |427.0|/ 425] 23.0 100K +5.0)4+3.0 [21.5 22.0 (22.0) 22.5 | 23.0 1.0 Meg. | +6.0/4+3.0 |+2.0 22.5 73,0) 24.0 | 25.0 o oo & Washability Capable of withstanding typical after-solder boardwash processes using approved detergent or solvent solutions, 258Available Special Order =P 2 Taper Data Number Values soa TAPER % BASIC TYPE 2000 & sa Bushing Type Plain Plastic = Bushing Length, Inches | _ 1/4", 3/8" a8" & o Shaft Length, Inches 1/8"d MF, 1/2, 5/8", 3/4" 3 50 Plastic L/4"d @, 3/8", 5/8", 3/4" = a Resistance Code Taper = U 100 101 * zc 1000 102 - 10000 103 = io 2 30 40 80 6 7) a OM) LOO 100000 104 = Percent Clockwise Mechanical Rotation 1000000 105 - 200 201 * 2000 202 = 20000 203 ~ 200000 204 = 2000000 205 250 250 es 2500 252 - 25000 253 - 250000 254 - 2500000 255 X* 50 500 oe 500 501 - 5000 502 - 50000 503 - 500000 504 - 5000000 505 * 750 751 - 7500 752 - 75000 753 - 75000) 754 7500000 755 # = = Available as a Special Order only. Contact factory for information. * = Not Available. @ Plain Ending. EI Slotted Ending. 259TYPE 2000 Conductive Plastic Panel Potentiometers Explanation of Part Numbers Total Resistance Value Plastic Shait First two digits are significant figures Diam and the third indicates the number Letter Inch oe A i ! eT : of zeros following the first two digits. = s Examples: 251 = 250 ohms 50 .2o0) (6,35) Standard Slot 375 (9,52) 501 =500 ohms PH 125 (3,18) Fiain Round 250 (6,35) 105 = 1.0 megohm 1 20 N048S504MA Conductive Plastic Lal U = Linear #10% Tolerance M = Linear +20% Tolerance Taper Type and Total Resistance Tolerance Terminal Options Bushing Type and Length A= 90 Formed In-Line U Threadiess Plastic .375 inch (9,52 mm) Long Ml B=Rear Offset N Metal .375 inch (9,52 mm) Long 32-NEF-24 THREADM C = Rear In-line G Metal .250 inch (6,35 mm) Long 32-NEF-24 THREADER Type Available Shaft Lengths 20 Single Panel Potentiometer Measured from mounting surface of the bushing to the free end of the shaft. Shaft Diameter Three Digit 125 4.250023 Fraction = Decimal mm Part Number Code x 3/8 a5 (9.53) O24 x 1/2 500 (12.70) O32 x K 5/8 625 (15.88) O40 x x a/4 oO (19,05) Cee M375 inch (9,53) long, 375 inch (9.53) diameter ONLY Bushing available B .250 inch (6,35) long, 250 inch (6,35) diameter ONLY Bushing available CAUTION: Wot all possible part number combinations are valid. Check parameter limits in text. EXAMPLE = 20HO32F103UA Invalid Bushing'Shaft Combination Plain .500 (12,70 mm) long bushing with .500 (12,70 mm) long flatted shaft. 260Type 2000 Ordering Information 1. Type. 7. Shaft length from mounting surface in inches. 2. Taper. 8, Mounting hardware (A-B Standard or Other). 3. Total resistance value in ohms. 9, Part number you have assigned, if any. 4, Bushing type. 10, Marking required on the part. 5. Bushing length in inches. 11. Special features, (Forward complete detailed 6. Shaft ending (plain or slotted). specifications to the factory). Cross-Reference Guide A-B Bourns | Type 2000 Model 90 DIMENSIONS Terminal Options A 90 Formed In-Line "B" Rear Offset C" Rear In-Line 2) oy 0 Fj i f | (a2 Wa v we] : 1 easy ete 37 Ll e+e fe Vegas! (ozs! i e B ea) aa A Leste i! .10 "1 Ti} AB Sal i Say (at Node: Torminal Cdameter = 020 + OO (0.71 = 005) Lengih beyond Siandott = 150 2 026 (3.81 Oa) Orill Sine for Fisted through Holes #56 (.040 = 008) (1.07 = 0,42) Resistor Connections "AAW Basic dimensions in inches. Dimensions in parentheses ew are in millimeters. TOLERANCE #2 Dimensional tolerance + .016 (0,40) except as specified, Terminal numbers for reference only. NOT TO SCALE 261DIMENSIONS ?hysical Dimensions Type 2000 Tolerance + .016 except as noted. pig en Pca ma ome ATs Pisetic wee 23) Bushing 628.010 _,| PP yts.88 = 0.25) (12.70) | es ae | isa YS oes * boo aa fiery | f +135 | 100-00 amt Nee | f aa | oo - i a i ee Pe ABT O15 r (35,82 = 0,25) I 92-0, 14) rh (17d = 0.98) J d [ 083. I L Pu 75 Dia iz.36) 062 = 005 ae ie axa Leas e} | ine) Terra Option Soho (ers O75 = 005 f 062 = .005 (4,90 > 0.12) ALCOW Enel (Te? 2 O12} PCE af Aciation Sunace Lege = (o.7a) Shaft Length from Mtg. Surface ors Mtn *L" + 0 ars 953 (e282) Bushings 1B | 500 12.70 son = aie 4 1 + 096 | 750 19,08 Nt lh: mall +| 22 | ae \ \1e0- a0) 7 , | i " 006 Dia. Dimension L aa Ir int 1 | i Piuesio Shot .125 Dia. 250 Dia, - L 1 Shat Shaft ni + | Xt - - B75 | 22.22 } 1.000 | 25,40 ~ - q sis? a Lg 250 = 018 1.125 | 28,57 | 1.125 | 28,57 Srey a es, = 5 ae = ie hd =O 15! 1.250 | 31,75 | 1.250 | 31,75 Nie 2) Bushing Bushing DIMENSION L*: Cireuil Band 1 End of Bhatt Mig. Surtace Mig. Surface Shaft Options (Plastic) Hardware ~ 00 = 000 +015 0 - O06 .0O0 ore no, ha! ae foasais pn + ae Hardware for 040 (3,07) ed (r= alt 1.60= 2.0 3, a ats i ~~ E ae .250 inch diameter en" OIE re a bushing ae Se se zest | Suae ] Lock Washer Maourding aii i MATaE Aut MeaT24 Hardware for +|,_ .oa0 (0.781 ona ; ; Approsimatie 2,1 Slotted available Plain available ae clameter Ol] wien in. 250 inch diameter only in.125 inch diameter only g oO} h Code Letter S. Code Letter P. 50 208 ee ria, Fol Leck Waahar Mounling Mut M-2H5B Mari 262