148, 149 Vishay Spectrol 1/2" (12.7 mm) Conductive Plastic and Cermet Potentiometers FEATURES * Robust construction * High rotational life (50 000 cycles) * Up to three sections PC support plates * Rotary switches and solder lugs terminals available * Compliant to RoHS directive 2002/95/EC since date code 0414 148 FEATURES * Conductive plastic element * Quiet electrical output 149 FEATURES * Cermet element * Low temperature coefficient ( 150 ppm/C) DIMENSIONS in inches (millimeters) 0.02 ( 0.5) SINGLE, DUAL OR TRIPLE 0.492 (12.500) 0.100 (2.54) 0.100 (2.54) 1 2 3 0.012 (0.030) 0.200 (5.07) 0.300 (7.62) thread 1/4 32-NEF-2A 0.094 (2.400) 0.125 (3.17) 0.024 (0.60) 0.024 (0.60) 0.035 (0.900) 0.071 (1.800) 0.183 (4.650) thread 3/8 32-NEF-2A 2 3 0.492 (12.50) 0.031 (0.80) Dual Single 0.024 (0.80) 0.492 (12.50) 0.185 (4.70) 0.012 (0.300) 0.188 (1.770) 0.183 (4.650) 1 FRONT AND REAR SUPPORT PLATES E = Flush with board surface 0.375 (9.520) 0.315 (8.000) 0.193 (4.900) 0.250 (6.35) 0.250 (6.380) 0.047 (1.200) 0.492 (12.500) 0.348 (8.83) 0.341 (8.85) 0.492 (12.50) 0.031 (0.80) 0.648 (16.45) 0.185 (4.70) 0.024 (0.600) 0.492 (12.50) SOLDER LUG TERMINALS 0.25 0.1 (6.35) (2.54) 0.3 0.2 (7.62) (5.08) 0.1 (2.54) 0.2 (5.08) 0.06 (1.52) 0.151 (3.85) 0.06 (1.52) 0.25 (6.38) 0.151 (1.52) 1 2 3 www.vishay.com 102 For technical questions, contact: sfer@vishay.com Document Number: 57040 Revision: 01-Apr-09 148, 149 1/2" (12.7 mm) Conductive Plastic and Cermet Potentiometers Vishay Spectrol ELECTRICAL SPECIFICATIONS PARAMETER Linear Resistance Range Non-Linear Linear 148 149 1 k to 1 M 100 to 2 M 500 to 500 k 250 to 1 M 10 % 10 % 20 % on request 10 % 10 % Tolerance Non-Linear Linearity (Typical) 5 % independent 4 maximum each end End Resistance 0.5 W at 70 C 0 W at 120 C Power Rating 1 W at 70 C 0 W at 150 C Non-Linear or PC mount, derate 50 % c a (3) (1) Circuit Diagram cw b (2) 270 10 without rotary switch 240 10 with rotary switch Effective Rotation Contact Resistance Variation 1.5 % of total resistance Maximum Continuous Working Voltage 3 % of total resistance 350 VAC across end terminals, but within power rating Dielectric Withstanding Voltage Sea Level - 750 VAC MECHANICAL SPECIFICATIONS Mechanical Travel 300 5 Operating Torque (Typical) Single section 0.2 to 3.0 oz. - in dual or triple section 0.3 to 4.5 oz.-in Bushing A and B 2.1 in-lbs max. Bushing F 6.8 in-lbs max. End Stop Torque Single 0.19 oz. Dual 0.27 oz. Triple 0.35 oz. Weight (approx.) Electrical Elements e3: Pure Sn Terminals Switch Elements e4: Gold plated ENVIRONMENTAL SPECIFICATIONS 148 149 Operating Temperature - 40 C to + 120 C - 40 C to + 125 C Storage Temperature - 55 C to + 120 C - 55 C to + 150 C - 40 C to + 120 C (4 % RT) - 40 C to + 150 C (3 % RT) 10 % RT 5 % RT Temperature Cycling (5 Cycles) Load Life (1000 h Rated Load at 70 C) Rotational Load Life TCR (Typical) Sealing Document Number: 57040 Revision: 01-Apr-09 50 000 cycles 500 ppm/C 150 ppm/C IP64 For technical questions, contact: sfer@vishay.com www.vishay.com 103 148, 149 1/2" (12.7 mm) Conductive Plastic and Cermet Potentiometers Vishay Spectrol LOCATING PEGS (Anti-Rotation Lug) The locating peg is provided by a plate mounted on the bushing and positioned by the module sides. Four set positions are available, clock face orientation: 12, 3, 6, 9. All 148, 149 bushings have a double flat. When panel mounting holes have been punched accordingly, an anti-rotation lug is not necessary. CODE VERSION A B L 12 9 C BUSHING EFFECTIVE F HIGH PEG O d mm 2 2 0.7 L mm 6.2 6.2 0.7 O d mm 2 2 L mm 7.75 7.75 - O d mm - 3.5 1.1 L mm - 13.5 - Locating pegs are supplied in separate bags with nuts and washers 3 6 BUSHING A, B Od RSID OPTION: ROTARY SWITCH MODULES * Rotary switches * Current up to 2 A * SPDT: Single pole, changeover switch in CCW position - 3 pins SWITCH SPECIFICATIONS MODULES: RS ON/OFF SWITCH RSI CHANGEOVER SWITCH The position of each module is free. RS and RSI rotary switches are housed in a standard 148, 149 module size 12.7 mm x 12.7 mm x 5.08 mm (0.5" x 0.5" x 0.2"). They have the same terminal styles as the assembled electrical modules. Switching Power Maximum 62.5 VA 15 VA = Switching Current Maximum 0.25 A 250 V 0.5 A 30 V = Maximum Current Through Element 2A Contact Resistance An assembly can comprise 1 or more switch modules. Switch actuation is described as seen from the shaft end. D:means actuation in maximum CCW position Dielectric Strength 30 m Terminal to Terminal 1000 VRMS Terminal to Bushing 2000 VRMS The switch actuation travel is 25 with a total mechanical travel of 300 5 and electrical travel of electrical module is 238 10. Maximum Voltage Operation 250 V 30 V = Insulation Resistance Between Contacts 106 M RSID SINGLE POLE CHANGEOVER Life at Pmax. In full CCW position, the contact is made between 3 and 2 and open between 3 and 1. Switch actuation (CW direction) reverses these positions. Minimal Travel 10 000 actuations 25 Operating Temperature - 40 C to + 85 C ELECTRICAL DIAGRAM RSID CCW POSITION 1 2 3* Note * Common www.vishay.com 104 For technical questions, contact: sfer@vishay.com Document Number: 57040 Revision: 01-Apr-09 148, 149 1/2" (12.7 mm) Conductive Plastic and Cermet Potentiometers Vishay Spectrol SAP ORDERING INFORMATION (Part Number 18 digits) 1 4 MODEL 8 1 0 F 0 G NUMBER OF MODULES SWITCH BUSHING 1 2 3 1 = RSID 0 = Without switch See table "Bushing" 148 = Plastic conductive 149 = Cermet element J S LOCATING PEG 0 = Without A B C BUSHING L OLD CODES A 1/4" 1/4" N B 1/4" 3/8" F 3/8" 3/8" 0 1 0 3 A RESISTANCE CODE/TOLERANCE/ TAPER OR SPECIAL SHAFT SHAFT END LEADS See table "Shaft" S = Slotted See table "Leads" On request: R = Round F = Flatted K Resistance code: 101 = 100 to 105 = 1 M Tolerance code: M = 20 %; K = 10 % Taper: A (S); L (Z); F (R) or special code given by Vishay L OLD CODES BB 1/8" 1/2" 32 J BG 1/8" 5/8" 40 G BH 1/8" 3/4" 48 BJ 1/8" 7/8" 56 GB 1/4" 1/2" 32 GG 1/4" 5/8" 40 GH 1/4" 3/4" 48 GJ 1/4" 7/8" 56 GL 1/4" 1" 64 GN 1/4" 1 1/4" 80 LEADS PIN SPACING TYPE X10 SPACE BETWEEN MODULES 2.54 mm (0.100") PCB pins X13 A13 1 SHAFT A10 X PCB pins and support plates 2.54 mm (0.100") Sold, lugs 4.65 mm (0.183") Y00 Y03 OLD CODES N/a 7.62 mm (0.300") P N/a 7.62 mm (0.300") E N/a 7.62 mm (0.300") S PART NUMBER DESCRIPTION (for information only) 148 1 0 F MODEL MODULES SWITCH BUSHING Document Number: 57040 Revision: 01-Apr-09 0 GJ S X10 BO50 10K 10 % A e3 LOCATING LEAD SHAFT SHAFT LEADS PACK. VALUE TOL. TAPER SPECIAL SPECIAL PEG FINISH For technical questions, contact: sfer@vishay.com www.vishay.com 105 Legal Disclaimer Notice Vishay Disclaimer 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 liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, 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 medical, 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. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1