TOCOS ® RA12 Series POTENTIOMETERS 12mm Round, Single-Turn, Through-Hole Sealed Wirewound Trimmers Features n 12mm round, single-turn, through-hole, sealed wirewound trimmers n Top and side adjust styles available n Low equivalent noise resistance n High setting stability n Low temperature coefficient n Long rotational life n Meets UL 94V-0 flammability requirements n Sealed to withstand wave soldering and immersion cleaning processes Specifications Electrical Environmental Standard Resistance Range . . . . . . . . . . . . . 10Ω to 20kΩ (standard 1, 2 & 5 sequence ) Resistance Tolerance . . . . . . . . . . . . . . . . . %10% standard End Resistance . . . . . . . . 0.2% or 1Ω, whichever is greater Resistance Taper . . . . . . . . . . . . . . . . . . . . . . . . . . . . Linear Peak Noise (C.R.V.) . . . . . 0.5% or 2Ω, whichever is greater Power Rating . . . . . . . . 0.5 watt at ~70&C, 0 watt at ~125&C Temperature Coefficient . . . . . . . . . . . . . . . . . %50ppm /&C Insulation Resistance . . . . . 1,000MΩ minimum at 500VDC Dielectric Strength . . . . . . . . . . . . . . . . . 900VAC, 1 minute Adjustment Travel . . . . . . . . . . . . . . . . . . . . . . . . . 270&%10& Temperature Range . . . . . . . . . . . . . . . . . !55&C to ~125&C Low Temperature Exposure . . . . . . . . . . . . !55&C, 1 hours ∆T/R )%1%~0.05Ω High Temperature Exposure . . . . . . . . . ~125&C, 250 hours ∆T/R )%1%~0.05Ω Load Life . . . . . . . . . . . . . . . . . ~70&C, 0.5 watt, 1,000 hours ∆T/R )%2% Thermal Shock . . . . . . . . . . . . . . . . . . . . . . !55&C,~125&C, 30 minutes each, 5 cycles ∆T/R )%1%~0.05Ω Humidity . . . . . . . . . . . . . . . . . . . . . . . . ~40&C, 90-95%RH, 0.5 watt, 500 hours ∆T/R )%2% Mechanical Soldering Heat Resistance . . . . . . . . . . . 350&C, 5 seconds ∆T/R )%1%~0.05Ω Mechanical Travel . . . . . . . . . . . . . . . . . . . . . . . . . 300&%10& Seal Test . . . . . . . . . . . . . . . . .~85&C, hot water for 1 minute Shaft Torque . . . . . . . . 30 to 300 gf • cm (0.42 to 4.16 oz • in) Rotational Life . . . . . . . . . . 200 cycles without discontinuity ∆T/R )%2% Stop Strength . . . . . . . . . . . . . . 1 kgf • cm (13.86 oz • in) min. Flammability of Plastic Materials . . . . . . . Meets UL 94V-0 ∆T/R = Total Resistance Change; S.S. = Setting Stability ( voltage ratio ) Nominal Weight . . . . . . . . . . . . . . . . . . . 1.5g (P); 2.4g (S, X ) Marking . . . . . . . . . . . . . . . . . . Resistance code, date code, model type, terminal identification TOCOS AMERICA, INC. 1177 East Tower Road, Schaumburg, IL 60173 Tel: 847-884-6664 Fax: 847-884-6665 101 E-mail: [email protected] www.tocos.com RA12 Series Dimensions RA12P Unit: mm P Terminal Style, Single-Slot, Top Adjust Ø 0.7 SLOT: 0.8 [email protected] [email protected] D (3) 501 #2 Ø12.5 %1.0 #3 #1 2.5 %0.1 Ø 5.0 10.0 6.0 5.0 %1.0 %1.0 %0.2 RA12S RA12X S Terminal Style, Single-Slot, Side Adjust X Terminal Style, Single-Slot, Side Adjust Ø12.5 Ø12.5 %1.0 %1.0 Ø 5.0 SLOT: 0.8 W 5.0 L 1.6 D Ø 5.0 8.5 %1.0 SLOT: 0.8 W 5.0 L 1.6 D 501 8.5 %1.0 501 14.75 14.75 %0.5 %0.5 8.5 8.5 %0.5 Ø 0.7 %0.5 0.3 (3) 5.0%1.0 Ø 2.0 #1 Ø 0.7 0.3 (3) 5.0%1.0 Ø 2.0 (4) #2 #3 #2 5.0 (4) 2.5%0.2 #1 2.5%0.2 #3 1.7 1.7 5.0 %0.2 %0.2 Recommended PCB Layouts P & S Pin-Out X Pin-Out 5.0 #2 #1 Unit: mm #3 #1 2.5 #3 2.5 Ø1.2 max. (3 holes) 5.0 Ø1.2 max. (3 holes) #2 Electrical Schematic clockwise ccw #1 #3 cw #2 wiper TOCOS AMERICA, INC. 102 1177 East Tower Road, Schaumburg, IL 60173 Tel: 847-884-6664 Fax: 847-884-6665 E-mail: [email protected] www.tocos.com RA12 Series RA12 P B Part Numbering System 102 K Resistance Tolerance: K = %10% Resistance Code: Expressed in ohms. A three digit code where the first two digits are significant figures, and the third digit indicates the number of zeros that follow these figures (i.e., 100 = 10Ω; 101 = 100Ω; 102 = 1,000Ω; 105 = 1,000,000Ω ). Resistance Taper: B = Linear. Terminal Style: P = 3-Lead Configuration, Top Adjust. S, X = 3-Lead Configurations, Side Adjust. TOCOS Series Name. Part Numbers Nominal Resistance Value ( Ω ) Code Resolution Catalog No. Bulk Percent ( % ) Potentiometer Styles 0.11 0.18 0.34 0.51 0.81 2.20 3.90 6.04 10.4 18.9 27.6 1.13 0.90 0.69 0.51 0.41 0.44 0.39 0.30 0.20 0.19 0.14 RA12P 0.11 0.18 0.34 0.51 0.81 2.20 3.90 6.04 10.4 18.9 27.6 1.13 0.90 0.69 0.51 0.41 0.44 0.39 0.30 0.20 0.19 0.14 RA12S 0.11 0.18 0.34 0.51 0.81 2.20 3.90 6.04 10.4 18.9 27.6 1.13 0.90 0.69 0.51 0.41 0.44 0.39 0.30 0.20 0.19 0.14 RA12X Ohms ( Ω ) RA12P Through-Hole, P Terminal Style, Single-Slot, Top Adjust 10 20 50 100 200 500 1,000 2,000 5,000 10,000 20,000 100 200 500 101 201 501 102 202 502 103 203 RA12P RA12P RA12P RA12P RA12P RA12P RA12P RA12P RA12P RA12P RA12P B B B B B B B B B B B 100 200 500 101 201 501 102 202 502 103 203 K K K K K K K K K K K RA12S Through-Hole, S Terminal Style, Single-Slot, Side Adjust 10 20 50 100 200 500 1,000 2,000 5,000 10,000 20,000 100 200 500 101 201 501 102 202 502 103 203 RA12S RA12S RA12S RA12S RA12S RA12S RA12S RA12S RA12S RA12S RA12S B B B B B B B B B B B 100 200 500 101 201 501 102 202 502 103 203 K K K K K K K K K K K RA12X Through-Hole, X Terminal Style, Single-Slot, Side Adjust 10 20 50 100 200 500 1,000 2,000 5,000 10,000 20,000 100 200 500 101 201 501 102 202 502 103 203 RA12X RA12X RA12X RA12X RA12X RA12X RA12X RA12X RA12X RA12X RA12X B B B B B B B B B B B 100 200 500 101 201 501 102 202 502 103 203 K K K K K K K K K K K Packaging Standard: Bulk Packaging Quantity 10 pieces per vinyl bag; 100 pieces per box. Soldering and Cleaning Guidelines For soldering, cleaning and other information, refer to Guidelines and Precautions for Using Potentiometers. TOCOS AMERICA, INC. 1177 East Tower Road, Schaumburg, IL 60173 Tel: 847-884-6664 Fax: 847-884-6665 103 E-mail: [email protected] www.tocos.com