Model 132, 138, 139 Vishay Spectrol 1-5/16" (33.3mm) Low Cost Industrial Single Turn Wirewound, Conductive Plastic, Cermet FEATURES * * * * Choice of Three Elements for Broad Resistance Range Center Tap Available Continuous Rotation & Mechanical Stops Both Standard High Power Rating (139) ELECTRICAL SPECIFICATIONS PARAMETER MIL-PRF-12934/MIL-PRF-39023 TEST PROCEDURES APPLY STANDARD SPECIAL 5 to 20K to 35K 3% 1% 5% 3% 1K to 50K - 10% 5% 500 to 2M - 20% 5% STANDARD BEST PRACTICAL Total Resistance: Model 132 Wirewound Tolerance: 50 and above Below 50 Model 138 Conductive Plastic Tolerance: Model 139 Cermet Tolerance: Linearity (Independent) Total Resistance (132) 5 to 20 20 to 200 200 and above 138/139 Noise (132) Output Smoothness (138 & 139) Power Rating Model 132 Model 138 Model 139 1.0% 1.0% 0.5% 0.5% 0.75% 0.50% 0.25% 0.25% 100 ENR 0.1% maximum 40C Ambient 2.75 watts 2 watts 5 watts All Models derated to zero at 125C MODEL 132 MODEL 138 MODEL 139 352 2 345 4 345 4 336 2 336 4 336 4 1000M minimum at 500VDC 1000VRMS, 60Hz 1.0% of total resistance or 0.5 whichever is greater (132 only) 0.5% maximum Electrical Rotation Continuous Stops Insulation Resistance Dielectric Strength Absolute Minimum Resistance Minimum Voltage Temperature Coefficient of Resistance 132 138 139 Refer to standard resistance element data 500ppm/C maximum 100ppm/C maximum MATERIAL SPECIFICATIONS ENVIRONMENTAL SPECIFICATIONS Housing Molded glass filled thermoplastic Rear Lid Shaft Terminals Glass filled thermoset plastic Stainless steel, non-magnetic Brass, plated for solderability, Non-passivated Vibration Shock Salt Spray Rotational Life Shaft Revolutions Model 132 Model 138 Model 139 Operating Temperature Range Moisture Resistance Mount Hardware Lockwasher Internal Tooth: Panel nut: Steel, nickel plated Brass, nickel plated 15Gs thru 2000 Hz 50g 48 Hours 500,000 2 million 2 million - 55C to + 125C - ORDERING INFORMATION The Models 132, 138 and 139 can be ordered from this specification sheet by stating. Example: 139 - 0 - 0 - 203 139 0 0 203 MODEL MECHANICAL OPTIONS OTHER OPTIONAL RESISTANCE CODE FEATURES 132, 138 or 139 0. Continuous 0. Standard (End Taps) 2: 1st Significant digit 2. Stops 1. Center Tap (Within 5 of Electrical Center) 0: 2nd significant digit 3: Number of Zero's Other characteristics will be standard as described on this specification sheet. If special characteristics are required such as special linearity tolerance, special resistance tolerance, non-linear functions, etc., please state these on your order Document Number: 57038 Revision 16-Jul-03 For technical questions, contact sfer@vishay.com www.vishay.com 53 Model 132, 138, 139 Vishay Spectrol 1 - 5/16" (33.3mm) Low Cost Industrial Single Turn Wirewound-, Conductive Plastic, Cermet DIMENSIONS in inches (millimeters) 0.031 0.875 60 0.015 O 0.500 (12.70) BC 0.015 0.187 (4.75) 0.015 0.625 (15.88) + 0.0000 - 0.0020 O 0.4062 MTG. (10.32) (22.22) 0.015 0.375 (9.52) 0.010 0.032 (0.81) + 0.0000 O 0.2497 (6.34) - 0.0003 0.062 (1.57) 0.030 MAX. (0.76) 0.015 O 1.312 (33.32) 0.562 (14.27) 0.032 (0.81) 3/8 - 32 UNEF - 2A O 0.125 (3.18) 2 0.062 (1.57) CW MTG. SURFACE TOLERANCES: UNLESS OTHERWISE NOTED DECIMALS 0.005 ANGLES 2 3 1 SCHEMATIC MECHANICAL SPECIFICATIONS PARAMETER Rotation Bearing Type Torque (Maximums) 360 (continuous) 340 5 stops Sleeve STARTING RUNNING 1.0 oz - in (72gm - cm ) 0.7 oz - in (50, 40gm - cm) Runouts (Maximums) Shaft Runout (TIR) Pilot Dia. Runout (TIR) Lateral Runout (TIR) Shaft End Play Shaft Radial Play Weight Stop Strength 0.002 in (0.05mm) 0.003 in (0.08mm) 0.005 in (0.13mm) 0.008 in (0.20mm) 0.003 in (0.08mm) 1.0 oz maximum (28,35gm) 8.0 in - lbs (9.21 Kgm - cm) (Stops Version Only) RATED POWER IN (WATTS) POWER RATING CHART RESISTANCE ELEMENT DATA OHMS PER TURN MAXIMUM CURRENT AT 40C AMBIENT (mA) MAXIMUM VOLTAGE ACROSS COIL (V) WIRE TEMP. COEF. (ppm/C) 0.021 0.032 0.056 0.145 0.251 0.424 0.806 1.50 2.64 5.34 7.98 13.4 20.0 742 524 371 234 166 122 74.2 52.4 37.1 23.4 16.6 12.2 8.88 3.71 5.24 7.42 11.7 16.6 24.4 37.1 52.4 74.2 117 166 244 311 800 800 800 20 20 20 20 20 20 20 20 20 20 6.0 139 5.0 RESISTANCE RESOVALUES LUTION () (%) 4.0 3.0 2.0 132 138 1.0 0 20 40 60 80 100 120 AMBIENT TEMPERATURE IN (C) 140 MARKING Unit Identification www.vishay.com 54 Units shall be marked with Spectrol name, model number, resistance and tolerance, linearity, terminal identification, and data code Applicable test procedures: Model 132, MILR-12934: Model 138 & 139. MIL-R-39023 5 10 20 50 100 200 500 1K 2K 5K 10K 20K 35K 0.419 0.327 0.280 0.290 0.251 0.212 0.161 0.150 0.132 0.107 0.080 0.067 0.057 For technical questions, contact sfer@vishay.com Document Number: 57038 Revision 16-Jul-03 Legal Disclaimer Notice Vishay Notice Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Vishay for any damages resulting from such improper use or sale. Document Number: 91000 Revision: 08-Apr-05 www.vishay.com 1