148 VISHAY | Alldatasheet

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Technical content

1/2" (12.7 mm) Conductive Plastic and Cermet Potentiometers www.vishay.com For technical ques tions, contact: sfer@vishay.com Document Number: 57040

102 See also: Application notes

Revision: 31-Jul-06 148, 149 Vishay Spectrol

148 FEATURES

  • Conductive plastic element
  • High rotational life (50 000 cycles)
  • Quiet electrical output
  • Robust construction

149 FEATURES

  • Cermet element
  • Low temperature coefficient (± 150 ppm/°C)
  • Robust construction DIMENSIONS in inches (millimeters) Tolerances unless otherwise specified ± 0.5 MOUNTING ACCESSORIES: PRODUCT IS SUPPLIED WITH A NUT & WASHER OPTIONAL FEATURES Up to three sections PC support plates Rotary switches, detents, Solder lugs terminals CONSTRUCTION MATERIALS Housing - Molded thermoplastic white Shaft - Brass, nickel plated RoHS COMPLIANT 0.492 (12.50) 0.648 (16.45) 0.185 (4.70)0.031 (0.80) 0.024 (0.60) 143.0 )58.8( 420.0 )06.0( 294.0 )05.21( 0.100 (2.54) 0.100 (2.54) 0.300 (7.62) 0.348 (8.83) 0.250 (6.35) thread 1/4 32-NEF-2A 0.012 (0.030) 0.200 (5.07) 521.0 )71.3( SINGLE, DUAL OR TRIPLE FRONT AND REAR SUPPORT PLATES E = Flush with board surface Dual Single 0.25 (6.35) 0.3 (7.62) 0.151 (3.85) 0.06 (1.52) 0.25 (6.38) 0.06 (1.52) 0.151 (1.52) 0.492 (12.50) 0.031 (0.80) 0.1 (2.54) 0.2 (5.08) 0.185 (4.70) 0.1 (2.54) 0.2 (5.08) 420.0 )08.0( 294.0 )05.21( SOLDER LUG TERMINALS 0.375 (9.520) 0.012 (0.300) 0.188 (1.770) thread 3/8 32-NEF-2A 052.0 )083.6( 391.0 )009.4( 0.492 (12.500) 0.047 (1.200) 0.315 (8.000) 0.035 (0.900) 0.071 (1.800) 0.183 (4.650) 0.183 (4.650) 490.0 )004.2( 294.0 )005.21(420.0 )006.0(

148, 149 1/2" (12.7 mm) Conductive Plastic and Cermet Potentiometers Vishay Spectrol Document Number: 57040 For technica l questions, contact: sfer@vishay.com www.vishay.com Revision: 31-Jul-06 See also: Application notes 103 ELECTRICAL SPECIFICATIONS PARAMETER 148 149 Resistance Range 1 kΩ to 1 MΩ linear 500 Ω to 500 kΩ non-linear 100 Ω to 2.0 MΩ linear 250 Ω to 1 MΩ non-linear Resistance Tolerance Linear Non-Linear Standard ± 10 % to 500K, ± 20 % over 500K Standard ± 10 % to 100K, ± 20 % over 100K Taper Tolerance 20 % of the Nominal R at 50 % mechanical rotation Linearity (Typical) ± 5 % Independent End Resistance 4 Ω maximum each end Power Rating 0.5 watts at 70 °C 0 watts at 120 °C 1 watt at 70 °C 0 watt at 150 °C Non-Linear or PC mount, derate 50 % Effective Rotation 270° ± 10° without rotary switch 240° ± 10° with rotary switch Contact Resistance Variation 1.5 % of total resistance 3 % of total resistance Maximum Continuous Working Voltage 350 VAC across end terminals, but within power rating Dielectric Withstanding Voltage Sea Level - 750 VAC 70 000 feet - 350 VAC CCW or CW, rotational life 10 000 cycles (rated load) MECHANICAL SPECIFICATIONS Mechanical Rotation 300° ± 5° Torque Operating Single section 0.2 to 3.0 oz - in Dual or triple section 0.3 to 4.5 oz - in Center Detent 0.6 to 3.0 oz - in Stop Strength 3 in - lbs min Weight (approx) Single 0.19 oz Dual 0.27 oz Triple 0.35 oz ENVIRONMENTAL SPECIFICATIONS 148 149 Operating Temperature - 40 °C to + 120 °C - 40 °C to + 150 °C Storage Temperature - 55 °C to + 120 °C - 55 °C to + 150 °C Temperature Cycling (5 Cycles) - 40 °C to + 120 °C (4 % ΔRt) - 40 °C to + 150 °C (3 % ΔRt) Load Life (1000 hrs. Rated Load at 70 °C) 10 % ΔRt 5 % ΔRt Rotational Load Life 50 000 cycles 25 000 cycles TCR ± 1000 ppm/°C ± 150 ppm/°C

www.vishay.com For technical ques tions, contact: sfer@vishay.com Document Number: 57040

104 See also: Application notes

Revision: 31-Jul-06 148, 149 Vishay Spectrol 1/2" (12.7 mm) Conductive Plastic and Cermet Potentiometers MARKING Unit Identification: Ink stamp on periphery

ORDERING INFORMATION

S NUMBER OF SECTIONS X MECHANICAL CONFIGURATION G METRIC BUSHING SIZE & SHAFT SHAFT LENGTH S SHAFT STYLE 103 RESISTANCE CODE Ω S TAPER P TERMINAL CONFIGURATION LEAD FINISH FROM THE MOUNTING SURFACE 148 CP

149 Cer

S: Single D: Duals T: Triple X: None (single shaft D, T sections) S: Single w/rotary switch P: Dual w/rotary switch N: 1/4 Dia x 1/4 L Shaft 1/8 Dia J: 1/4 Dia x 3/8 L Shaft, 1/8 Dia G: 3/8 Dia x 3/8 L Shaft, 1/4 Dia Shaft length code 32: 1/2 in 40: 5/8 in 48: 3/4 in 56: 7/8 in 64: 1 in 80: 1 1/4 in Slotted Flatted P: Plain slotted in std. on request F and P EIA code - first 2 significant digits 3rd is number of zeros S: Linear ± 10 % Z: CW Log, ± 10 % to 500 kΩ ± 20 % over 500 kΩ R: CCW Log, ± 10 % to 500 kΩ ± 20 % over 500 kΩ P: PC, 0.250 E: PC terminals with E support plate S: Solder lugs e3: Pure Sn 100 250 500 750 2.5K 10K 20K 25K 50K 75K 100K 250K 500K 750K SAP PART NUMBERING GUIDELINES 14 8 10 F 0 G J S X 1 01 0 3 K A MODEL SHAFT See the end of this data book for conversion tables SWITCH LEADSBUSHING OHMIC VALUE/TOL/LAW OR SPECIAL LOCATING PEG NB OF MOD.

Document Number: 91000 www.vishay.com Revision: 18-Jul-08 1 Disclaimer Legal Disclaimer Notice Vishay All product specifications and data are subject to change without notice. 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 herein or in any other disclosure relating to any product. Vishay disclaims any and all li ability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permit ted by law. The product specifications do not expand or otherwise modify Vishay’s terms and conditions of purcha se, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medi cal, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners.