70 Vishay Spectrol 1 - 1/4” Rectangular Multi-Turn Cermet FEATURES ∑ Improved Wiper ∑ Unique “T” Slider Block Design Assure Excellent Setability and Stability ∑ CRV of 3% or 3W ∑ Temperature coefficient of 100 ppm/°C ∑ RT Tolerance ± 10% STD (± 5% Available) DIMENSIONS in inches (millimeters) MTG. HOLES 0.093 Ø (2.36) ± 0.010 0.070 (1.78) ± 0.010 0.105 (2.67) ± 0.010 1.250 (31.75) ± 0.010 0.025 (0.63) 1.000 (25.40) ± 0.010 0.190 ± 0.015 (4.83) 0.315 (8.00) ± 0.015 0.135 (343) ± 0.010 0.125 (3.18) ± 0.030 0.500 (12.70) ± 0.003 0.028 Ø .TYP (0.71) ± 0.010 0.050 (1.27) 0.63 (1.60) MAXIMUM MENISCUS #30 AWG LEADS INSULATED 6” (152.40 MIN. LENGTH ± 0.010 ± 0.010 0.700 0.050 (1.27) (17.28) ± 0.010 0.100 (2.54) 0.030 (0.76) ± 0.010 0.300 (7.62) ADJUSTMENT SCREW 0.110 (2.79) Ø HEAD SLOT ± 0.015 0.025 (0.64) WIDE X 0.260 0.030 (0.76) DEEP (6.60) ELECTRICAL SPECIFICATIONS 10W thru 2MW Resistance Range Standard Resistance Tolerance 10% (para. 3.7.1) End Resistance 2% maximum (para. 3.7.2) Actual Effective Electrical Travel 20 turns nominal (para. 3.8) Contact Resistance Variation Dielectric Withstanding Voltage 3% or 3W, whichever is greater (para. 3.9) 1000 VAC at sea level, 350 VAC at 80.000 feet (para. 3.10) 24.400 meters) 1000MW (para. 3.11) Insulation Resistance Power Rating Temperature coefficient of resistance www.vishay.com 84 1.0 watt at 85°C derated linearly to zero watts at 150°C (para. 3.5) maximum voltage not to exceed 400 volts ± 100ppm/°C 100W to 2MW - 100 to 200ppm/°C 10W, 20W and 50W For technical questions, contact: [email protected] Document Number: 57076 Revision: 05-Aug-04 70 Vishay Spectrol 1 - 1/4” Rectangular Multi-Turn Cermet MECHANICAL SPECIFICATIONS Stops Wiper idles against stops (para. 3.4.7.1) Operating Torque 5 oz-in (360 gm-cm) maximum (para. 3.12.1) Rotational Life 200 cycles minimum with loaded circuit, maximum change in resistance 2% (para 3.23) or 500 cycles minimum without discontinuity unloaded Weight 0.116 oz (3.3 grams) maximum ENVIRONMENTAL SPECIFICATIONS MAXIMUM TOTAL RESISTANCE CHANGE SETTING Operating Temperature Range - 55°C to + 150°C – – Salt Spray 96 hours (para. 3.18) – – Terminal Strength 2lbs (900gms) minimum push/pull (para. 3.24) – – Sealed All units sealed to permit cleaning in common solvents immersion – – Thermal Shock - 65°C to + 125°C (para. 3.13) 2% 1% Shock 100g’s 6ms (para 3.16) 1% 1% Vibration 30g’s 10 to 2000Hz (para. 3.17) 1% 1% Load Life 1000 hours (para. 3.20) 3% 1% Low Temperature Operation - 55°C (para. 3.21) 2% 2% High Temperature Exposure + 150°C (para. 3.22) 3% 2% Resistance to Solder Heat 350°C for 3 seconds (para. 3.19) 1% – MARKING Unit Identification: Manufacturer’s name and part number including EIA resistance code, date code, circuit diagram and military style designation as appicable ORDERING INFORMATION 70 L 103 T000 MODEL TERMINAL STYLE EIA RESISTANCE CODE SPECIAL (omit if standard) L = Leadwire Y = Printed circuit pins T601 Panel mount added to terminal style L SAP PART NUMBERING GUIDELINES M 7 0 MODEL L STYLE 1 0 OHMIC VALUE 3 K TOL B 4 0 PACKAGING CODE SPECIAL (IF APPLICABLE) See the end of this data book for conversion tables Document Number: 57076 Revision: 05-Aug-04 For technical questions, contact: [email protected] www.vishay.com 85 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