Analog Technologies High Stability Miniature Thermistor ATH10KR8 SPECIFICATIONS Nominal Resistance @ 25°C: B Value @ 25°C /85°C: B Value @ 0°C /100°C: B Value @ 25°C /100°C: Thermistor Diameter: Thermistor Length: Lead Diameter: Lead Length: Dissipation Factor: Heat Capacity: Maximum Power @ 25°C: MAIN FEATURES Glass Encapsulated for Long Term Stability & Reliability High Stability: <0.1°C/Y Small Size: φ0.8mm×1.4mm High Resistance Accuracy: 1% Quick Response Time: 3s Wide Temp. Range: −55°C to 250°C 10K ± 1% 3480K ± 1% 3450K ± 1% 3497K ± 1% 0.8 ± 0.1mm 1.4 ± 0.4mm 0.15mm 63 ± 3mm 0.4mW/K 1.3mJ/K 18mW APPLICATION Drill a hole on the object for which the temperature needs to be measured and use thermally conductive epoxy to pot the thermistor inside the hole. The hole diameter should be between 1.2 to 1.4mm and the depth should between 2 to 2.5mm. When a deeper hole is needed, drill a 2 stage hole to prevent mounting epoxy bobbles trapped inside which would cause temperature measurement errors. Figure 2 shows the section view of the 2 stage hole. Thermal Conductive Epoxy 3 – 5 mm 2 – 2.5 mm APPLICATIONS Temperature sensing for laser diodes, optical components, etc. DESCRIPTION The ATH10KR8 is a high precision glass encapsulated thermistor. Comparing with conventional epoxy encapsulated thermistors, ATH10KR8 presents higher long term stability and wider temperature range. In addition, it has a small size and short response time. The ATH10KR8 can be used to measure the temperatures for laser diodes, optical components, etc., with high accuracy and long term stability. φ0.8 φ1.4 1.2 – 1.5 mm Figure 2 Section View of the 2 Stage Hole The worst mounting result is that there are air bubbles trapped inside the thermistor mounting hole. These bubbles cause thermal sensing time delay and sensing temperature errors. To avoid the bubbles, use thin epoxy, vibrate the assembly before curing, and cure the epoxy inside the mounting hole at high temperature, 80°C to 150°C, depending on the epoxy used and the maximum temperature assembly components allow. The thermistor lead wires are made of plain copper and there is no insulation coating on them, please make sure that they do not touch each other after mounting the thermistor. Some thermal conductive epoxies are also electrically conductive and such epoxies should not be used for mounting the thermistors, since the lead wires are conductive. 63 φ0.15 Bare copper wire Figure 1 Side View of ATH10KR8 ORDERING INFORMATION Part number: ATH10KR8 Quantity 1-9 10 - 49 50 - 249 ≥250 Price $6.4 $5.2 $3.8 $2.4 5 50 E. Weddell Drive, Suit e 4, Sunnyvale, CA 94 08 9, U. S. A. Tel.: (4 08 ) 7 47 -9 76 0, Fax: (40 8) 74 7-97 70 , W eb: w w w .analogt echnologies.com © Copyrights 2000 – 2005, Analog Technologies, Inc. All Rights Reserved. 1 Analog Technologies High Stability Miniature Thermistor ATH10KR8 Resistance Temperature Characteristics NOTICE 1. ATI warrants performance of its products for one year to the specifications applicable at the time of sale, except for those being damaged by excessive abuse. Products found not meeting the specifications within one year from the date of sale can be exchanged free of charge. 2. ATI reserves the right to make changes to its products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. 3. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. Testing and other quality control techniques are utilized to the extent ATI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. 4. Customers are responsible for their applications using ATI components. In order to minimize risks associated with the customers’ applications, adequate design and operating safeguards must be provided by the customers to minimize inherent or procedural hazards. ATI assumes no liability for applications assistance or customer product design. 5. ATI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of ATI covering or relating to any combination, machine, or process in which such products or services might be or are used. ATI’s publication of information regarding any third party’s products or services does not constitute ATI’s approval, warranty or endorsement thereof. 6. IP (Intellectual Property) Ownership: ATI retains the ownership of full rights for special technologies and/or techniques embedded in its products, the designs for mechanics, optics, plus all modifications, improvements, and inventions made by ATI for its products and/or projects. 5 50 E. Weddell Drive, Suit e 4, Sunnyvale, CA 94 08 9, U. S. A. Tel.: (4 08 ) 7 47 -9 76 0, Fax: (40 8) 74 7-97 70 , W eb: w w w .analogt echnologies.com © Copyrights 2000 – 2005, Analog Technologies, Inc. All Rights Reserved. 2