SENSORS & CONTROLS PRODUCTS May, 2006 Bourns Manufacturers Representatives Corporate Distributor Product Managers Americas Sales Team Asia Sales Team Europe Sales Team Bourns Internal Bourns Plant Managers Bourns® Sensors & Controls Division Announces Model 39 Material Change Sensors and Controls Division will be changing the plastic material used in molding the housing of our Model 39. A change will be made from Fortron 6165A4 to Thermocomp® OF-1008 due to phase out of Fortron material at our current supplier and lack of availability from other suppliers. Traditionally, the rotary switch and non-switch versions were made with natural colored Fortron, while the push switch version has been made with black colored Fortron. Please see the photos below. Fortron Black Fortron Natural In transitioning to the Thermocomp® material, we will discontinue the use of natural color material. The housings for both switch and non-switch versions will be black in color. There is no change to fit, form, or function. The transition to Thermocomp® material will begin the week of May 8, 2006. Thermocomp® is a UL rated (V-0) engineering material. Attached you will find data sheets for both Fortron and Thermocomp® plastics. The UL certification for Thermocomp is QMFZ2.E45195 and is available on the UL website at www.ul.com. Ticona Product Data Datasheet Page 1 of 2 FORTRON 6165A4 | PPS-X65 | Mineral / Glass Reinforced Description Fortron 6165A4 offers a unique balance of properties based on a high mineral and glass reinforced composition. The heat resistance under load bearing conditions is excellent for this product. As with all Fortron grades this product is inherently flame-retardant. Applications include electronic components (i.e. lamp houses, connection parts and sockets) and components in industry (i.e. pumps and pistons). Physical properties Density Molding shrinkage (parallel) Molding shrinkage (normal) Water absorption Value Unit 1950 kg/m³ 0.2 - 0.6 % 0.3 - 0.7 % 0.02 % Test Standard ISO 1183 ISO 294-4 ISO 294-4 ISO 62 Mechanical properties Tensile modulus Stress at break (5mm/min) Strain at break (5mm/min) Flexural modulus (23°C) Flexural stress @ break Charpy impact strength (+23°C) Charpy impact strength (-30°C) Charpy notched impact strength (+23°C) Charpy notched impact strength (-30°C) Unnotched impact str (Izod) @ 23°C Notched impact strength (Izod) @ 23°C Notched impact strength (Izod) @-30°C Rockwell hardness Value Unit 19000 MPa 130 MPa 1.2 % 18800 MPa 210 MPa 20 kJ/m² 20 kJ/m² 7 kJ/m² 7 kJ/m² 20 kJ/m² 6 kJ/m² 6 kJ/m² 100 M-Scale Test Standard ISO 527-2/1A ISO 527-2/1A ISO 527-2/1A ISO 178 ISO 178 ISO 179/1eU ISO 179/1eU ISO 179/1eA ISO 179/1eA ISO 180/1U ISO 180/1A ISO 180/1A ISO 2039-2 Thermal properties Melting temperature (10°C/min) Glass transition temperature (10°C/min) Temp. of deflection under load (1.80 MPa) Temp. of deflection under load (8.00 MPa) Coeff.of linear therm. expansion (parallel) Coeff.of linear therm. expansion (normal) Oxygen index Burning Behav. at 1.6mm nom. thickn.(ISO 1210) Thickness tested Burning Behav. at thickness h (ISO 1210) Thickness tested Burning Behav. 5V at thickn. H (ISO 10351) Thickness tested Value Unit 280 °C 90 °C 270 °C 215 °C 0.19 E-4/°C 0.24 E-4/°C 53 % V-0 class 1.5 mm V-0 class 0.75 mm 5VA class 3 mm Test Standard ISO 11357-1,-2,-3 ISO 11357-1,-2,-3 ISO 75-1/-2 ISO 75-1/-2 ISO 11359-2 ISO 11359-2 ISO 4589 UL94 UL94 UL94 UL94 UL94 UL94 Electrical properties Relative permittivity - 10kHz Relative permittivity (1 MHz) Dissipation factor - 10kHz Dissipation factor (1 MHz) Volume resistivity Surface resistivity Electric strength Comparative tracking index Value Unit 5.4 5.6 10 E-4 20 E-4 >1E15 Ohm*m >1E15 Ohm 25 kV/mm 175 - Test Standard IEC 60250 IEC 60250 IEC 60250 IEC 60250 IEC 60093 IEC 60093 IEC 60243-1 IEC 60112 Test specimen production Value Unit Test Standard http://www.ticona.com/tools/mcbasei/matdb/printdatasheet.php 5/14/2004 Ticona Product Data Datasheet Page 2 of 2 Injection Molding, melt temperature Injection Molding, mold temperature 310 - 340 °C 135 - 160 °C Rheological Calculation properties Spec. heat capacity of melt Value Unit 1600 J/(kg K) ISO 294 ISO 294 Test Standard Internal Other Processing Injection Molding On injection molding machines with 15-25 D long three-section screws, are usual in the trade, the unreinforced FORTRON is processable. A shut-off nozzle is preferred to a free-flow nozzle. Melt temperature Mold wall temperature 320-340 at least 140 degC degC A medium injection rate is normally preferred. All mold cavities must be effectively vented. Disclaimer NOTICE TO USERS: Values shown are based on testing of laboratory test specimens and represent data that fall within the standard range of properties for natural material. These values alone do not represent a sufficient basis for any part design and are not intended for use in establishing maximum, minimum, or ranges of values for specification purposes. Colorants or other additives may cause significant variations in data values.\n\nProperties of molded parts can be influenced by a wide variety of factors including, but not limited to, material selection, additives, part design, processing conditions and environmental exposure. Any determination of the suitability of a particular material and part design for any use contemplated by the users and the manner of such use is the sole responsibility of the users, who must assure themselves that the material as subsequently processed meets the needs of their particular product or use.\n\nTo the best of our knowledge, the information contained in this publication is accurate; however, we do not assume any liability whatsoever for the accuracy and completeness of such information. The information contained in this publication should not be construed as a promise or guarantee of specific properties of our products. It is the sole responsibility of the users to investigate whether any existing patents are infringed by the use of the materials mentioned in this publication.\n\nMoreover, there is a need to reduce human exposure to many materials to the lowest practical limits in view of possible adverse effects. To the extent that any hazards may have been mentioned in this publication, we neither suggest nor guarantee that such hazards are the only ones that exist. We recommend that persons intending to rely on any recommendation or to use any equipment, processing technique or material mentioned in this publication should satisfy themselves that they can meet all applicable safety and health standards.\n\nWe strongly recommend that users seek and adhere to the manufacturer?s current instructions for handling each material they use, and entrust the handling of such material to adequately trained personnel only. Please call the telephone numbers listed listed (+49 (0) 69 30516299 for Europe and +1 908 598-4169 for the Americas) for additional technical information. Call Customer Services for the appropriate Materials Safety Data Sheets (MSDS) before attempting to process our products. \n\nThe products mentioned herein are not intended for use in medical or dental implants.\n http://www.ticona.com/tools/mcbasei/matdb/printdatasheet.php 5/14/2004 "Thermocomp®" OF-1008 data provided by IDES Page 1 of 2 Thursday, May 13, 20 Thermocomp® OF-1008 LNP Engineering Plastics Inc. - Polyphenylene Sulfide Actions -- - ISO Data Sheet Product Characteristics Material Status Availability Test Standards Available Filler/Reinforcement Forms Processing Method Commercial: Active North America ASTM Glass fiber reinforcement Pellets Injection Molding Properties 1 Physical Density -Specific Gravity (Method A) Mold Shrink, Linear-Flow Mold Shrink, Linear-Trans Nominal Values (English) Test Method Nominal Values (English) Test Method 1.70 sp gr 23/23°C 0.0030 in/in 0.010 in/in Mechanical Tensile Strength @ Break Tensile Elongation @ Brk Flexural Modulus Flexural Strength Coef. of Friction (vs. Steel - Dynamic) (vs. Steel - Static) Wear Factor (10^-10) (40 psi, 50 ft/min) 23300 1.5 2060000 34000 psi % psi psi 0.41 0.50 373 in^5-min/ft-lb-h ASTM D792 ASTM D955 ASTM D955 ASTM D638 ASTM D638 ASTM D790 ASTM D790 ASTM D1894 Impact Nominal Values (English) Test Method Thermal Nominal Values (English) Test Method Notched Izod Impact (0.125 in) Unnotched Izod Impact (0.125 in) 1.80 ft-lb/in 9.82 ft-lb/in DTUL @264psi - Unannealed 508 °F ASTM D256 ASTM D256 ASTM D648 Additional Properties The values displayed above as Coef. of Friction and Wear Factor were tested in accordance with LNP WI-0687. COEFFICIENT OF FRICTION vs. Steel, Dynamic @ 40 psi, 50 ft/min, LNP WI-0687: 0.41 COEFFICIENT OF FRICTION vs. Steel, Static @ 40 psi, LNP WI-0687: 0.5 WEAR FACTOR @ 40 psi, 50 ft/min, LNP WI-0687: 373 10^-10 in^5-min/ft-lb-hr Injection Molding Parameters Processing Information Nominal Values (English) Drying Temperature Drying Time Processing (Melt) Temp Mold Temperature Back Pressure 1 250 to 300 4.0 600 to 610 275 to 325 25.0 to 50.0 °F hr °F °F psi Test Method Notes Typical properties; not to be construed as specifications. http://icatalog.ides.com/datasheet.asp?I=2300&M=7&SM=7&SFP=4&FP=5&E=71525&... 5/13/2004 "Thermocomp®" OF-1008 data provided by IDES Page 2 of 2 Copyright ©, 2004 IDES - One Source. Plastics Data. This information is intended only as a guide for use at your discretion and risk. NOT INTENDED FOR SPECIFICATION PURPOSES. We cannot guarantee favorable results and assume no liability in connection with its use or the use of the products described. None of this information is to be taken as a license to operate under, or recommendation to infringe, any patents. NOTE: FOR PRODUCTS WHOSE MATERIAL STATUS IS LISTED AS "PROVISIONAL," THE PROPERTIES SHOWN ARE ESTIMATED THROUGH INTERPOLATION FROM DATA GENERATED FOR SIMILAR PRODUCTS. http://icatalog.ides.com/datasheet.asp?I=2300&M=7&SM=7&SFP=4&FP=5&E=71525&... 5/13/2004