248, 249 www.vishay.com Vishay Spectrol 1/2" (12.7 mm) Conductive Plastic and Cermet Potentiometers FEATURES • Model 248: 0.5 W at 70 °C (conductive plastic element) • Model 249: 1 W at 70 °C (cermet element) • Cost effective panel potentiometer • PCB mounting • Tests according to CECC 41000 or IEC 60393-1 • Material categorization: for definitions of compliance please see www.vishay.com/doc?99912 DIMENSIONS in millimeters (inches) ± 0.5 mm (± 0.02") X = Standards leads METAL OR PLASTIC SHAFTS Screwdriver slot shown in mid electrical travel 22.22 (0.875) ± 0.75 12.7 (0.500) ± 0.4 Mounting surface 7.6 (0.300) ± 0.4 0.8 (0.30) wide × 0.8 (0.03) deep 9.5 (0.375) Ø 6.35 (0.250) - 0.0 0.5 12.7 (0.500) ± 0.4 0.41 (0.016) 3/8" - 32 NEF - 2A 0.5 (0.020) 0.36 (0.014) 5.08 (0.200) ± 0.25 6.9 (0.272) 2.54 (0.100) ± 0.25 METAL SHAFT 2.54 (0.100) ± 0.25 1/4" - 32 NEF - 2A VISHAY Ø 3.18 (0.125) ± 0.025 9.5 (0.375) 19.05 (0.750) ± 0.75 D = Rear locating lugs 2.34 E = Rear stand off Terminal pins x 3 6.76 (0.266) 3.18 (0.125) 7.62 3.18 PCB surface. 3.14 0.36 2.54 Revision: 22-Sep-15 1.0 typ. 2.55 typ. 8.5 12.70 MTGLUG CI. 10.16 Document Number: 57054 1 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 248, 249 www.vishay.com Vishay Spectrol ELECTRICAL SPECIFICATIONS PARAMETER Element type MODEL 248 Conductive plastic MODEL 249 Cermet 500 to 1 M Total resistance range Standard series 1, 2, 5 Resistance tolerance ± 20 % ± 20 % (on request ± 10 %) 0.5 W at 70 °C 1.0 W at 70 °C 1 Linear POWER IN W Power rating POWER IN W 0.5 0 0 0 25 50 70 100 125 150 AMBIENT TEMPERATURE IN °C 0 25 50 70 100 125 150 AMBIENT TEMPERATURE IN °C 2 CW Circuit diagram 3 1 Temperature coefficient of resistance (typical) ± 500 ppm/°C ± 150 ppm/°C Linearity (typical) ± 5 % independent Limiting element voltage 300 V Contact resistance variation (typical) 5 % of the total resistance Insulation resistance 1000 M minimum, 500 VDC Dielectric strength 750 VRMS minimum 50 Hz/60 Hz 2 maximum each end End resistance Effective electrical travel 265° ± 5° MECHANICAL SPECIFICATIONS Mechanical travel 295° ± 5° Operating torque 0.1 Ncm to 2 Ncm End stop Torque 35 Ncm (50 oz.-inch) Max. tightening Torque Weight MARKING • Vishay trademark • Part number 1/4" Bush 50 Ncm • Tolerance 3/8" Bush 70 Ncm • Date code 8.3 g (0.29 oz.) (1/4" x 7/8" FMF metal shaft) • Terminal identification ENVIRONMENTAL SPECIFICATIONS Temperature range Climatic category Sealing Revision: 22-Sep-15 -55 °C to +125 °C PACKAGING - In box of 50 pieces, code B25 (BO50) 55/125/4 IP50 Document Number: 57054 2 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 248, 249 www.vishay.com Vishay Spectrol PERFORMANCE TESTS CONDITIONS TYPICAL VALUES AND DRIFTS FOR 249 RT/RT (%) R1-2/R1-2 (%) OTHER 1000 h at rated power 90’/30’ - ambient temp. 70 °C ±3% ±5% Contact res. variation: < 1 % Damp heat, steady state 4 days 40 °C 93 % HR ±2% - Dielectric strength: 1000 VRMS Insulation resistance: > 104 M Change of temperature 5 cycles, -55 °C at +125 °C ±1% - V1-2/V1-3 ± 2 % Mechanical endurance 10 000 cycles ±3% - Contact res. variation: 2 % Rn 50 g’s at 11 ms 3 successive shocks in 3 directions ±1% ±2% - 10 Hz to 55 Hz, 0.75 mm or 10 g’s during 6 h ±1% - V1-2/V1-3 ± 2 % Electrical endurance Shock Vibration Note • Nothing stated herein shall be construed as a guarantee of quality or durability. STANDARD RESISTANCE ELEMENT DATA STANDARD RESISTANCE VALUES 248 LINEAR TAPER MAX. POWER AT 70 °C 249 LINEAR TAPER MAX. WORKING VOLTAGE MAX. WIPER CURRENT MAX. POWER AT 70 °C MAX. WORKING VOLTAGE MAX. WIPER CURRENT W V mA W V mA 500 0.5 15.8 32 1 22.4 45 1K 0.5 22.4 22 1 31.6 32 2K 0.5 31.6 16 1 44.7 22 2.5K 0.5 35.4 14 1 50.0 20 5K 0.5 50.0 10 1 70.7 14 10K 0.5 70.7 7 1 100 10 20K 0.5 100 5.0 1 141 7 25K 0.5 112 4.5 1 158 6 50K 0.5 158 3.2 1 224 4 100K 0.5 224 2.2 0.90 300 3.0 200K 0.45 300 1.50 0.45 300 1.5 250K 0.36 300 1.20 0.36 300 1.2 500K 0.18 300 0.60 0.18 300 0.6 1M 0.09 300 0.30 0.09 300 0.3 Revision: 22-Sep-15 Document Number: 57054 3 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 248, 249 www.vishay.com Vishay Spectrol ORDERING INFORMATION (part number) 2 4 8 MODEL BUSHING 248 = plastic conductive 249 = cermet element F = Ø 3/8" B = Ø 1/4" F G J SHAFT Ø L P X Old codes GJ 1/4" 7/8" 7 and 9 8 S = slotted R = round F = flatted D = custom B 2 SHAFT MATERIAL SHAFT END BH 1/8" 3/4" AP S 0 = metal (old codes 8 and 9) P = plastic (old code 7) 5 2 5 2 M A LEADS PACKAGING RESISTANCE CODE/TOLERANCE/TAPER OR SPECIAL D E X = std B25 = Box 50 pieces Resistance: From 501 = 500 to 105 = 1 M Tolerance: M = 20 %; On request : K = 10 % (249 only) Custom shaft Taper: A = linear; L = logarithmic (old code J) or special code given by Vishay PART NUMBER DESCRIPTION (for information only) 248 F GJ MODEL BUSHING SHAFT S P X BO50 2K5 20 % A e3 SHAFT SHAFT LEAD LEADS PACKAGING VALUE TOLERANCE TAPER SPECIAL SPECIAL END MATERIAL FINISH RELATED DOCUMENTS APPLICATION NOTES Potentiometers and Trimmers www.vishay.com/doc?51001 Guidelines for Vishay Sfernice Resistive and Inductive Components www.vishay.com/doc?52029 Revision: 22-Sep-15 Document Number: 57054 4 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 Legal Disclaimer Notice www.vishay.com Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. 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Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21 conform to JEDEC JS709A standards. Revision: 02-Oct-12 1 Document Number: 91000