550 e. weddell drive, suite 4, sunnyvale, ca 94089, u. s. a. tel.: (408) 747-9760, fax: (408) 747-9770, web: www.analogtechnol ogies.com ? copyrights 2000 ? 2005, analog technologi es, inc. all rights reserved. 1 a nalog technologies ATH100KR8 high stability miniature thermistor main features glass encapsulated for long term stability & reliability high stability: <0.1 c/y small size: 0.8mm 1.4mm high resistance accuracy: 1% quick response time: 3s wide temp. range: ? 55 c to 250 c applications temperature sensing for laser diodes, optical components, etc. description the ATH100KR8 is a high precision glass encapsulated thermistor. comparing with conventional epoxy encapsulated thermistors, ATH100KR8 presents higher long term stability and wider temperature range. in addition, it has a small size and short response time. the ATH100KR8 can be used to measure the temperatures for laser diodes, optical components, etc., with high accuracy and long term stability. figure 1 side view of ATH100KR8 specifications nominal resistance @ 25 c: 100k 1% b value @ 25 c /85 c: 4066k 1% b value @ 0 c /100 c: 4036k 1% b value @ 25 c /100 c: 4085k 1% thermistor diameter: 0.8 0.1mm thermistor length: 1.4 0.4mm lead diameter: 0.15mm lead length: 63 3mm dissipation factor: 0.4mw/k heat capacity: 1.3mj/k maximum power @ 25 c: 18mw application drill a hole on the object for which the temperature needs to be measured and use thermall y 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. 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 epox ies are also electrically conductive and such epoxies should not be used for mounting the thermistors, since the lead wires are conductive. ordering information part number: ATH100KR8 quantity 1 - 9 10 - 49 50 - 249 250 price $6.4 $5.2 $3.8 $2.4 1.4 0.15 thermal conductive epoxy 3 ? 5 mm 2 ? 2.5 mm 1.2 ? 1.5 mm
550 e. weddell drive, suite 4, sunnyvale, ca 94089, u. s. a. tel.: (408) 747-9760, fax: (408) 747-9770, web: www.analogtechnol ogies.com ? copyrights 2000 ? 2005, analog technologi es, inc. all rights reserved. 2 a nalog technologies ATH100KR8 high stability miniature thermistor resistance temperatu re characteristics t t
550 e. weddell drive, suite 4, sunnyvale, ca 94089, u. s. a. tel.: (408) 747-9760, fax: (408) 747-9770, web: www.analogtechnol ogies.com ? copyrights 2000 ? 2005, analog technologi es, inc. all rights reserved. 3 a nalog technologies ATH100KR8 high stability miniature thermistor notice 1. ati warrants performance of its products for one year to the specifications applicable at the time of sale, except for those be ing 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 cust omers to obtain the latest version of relevant informati on to verify, before placing orders, that inform ation 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 lia bility. testing and other quality control tec hniques are utilized to the extent ati d eems necessary to support this warranty. specific testing of all parameters of each device is not necessarily performed, except those mandated by government r equirements. 4. customers are responsible for their applications using ati compone nts. in order to minimize risks associated with the customers ? applications, adequate design and operating safeguards must be pr ovided by the customers to minimize inherent or procedural hazards. ati assumes no li ability 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, ma sk work right, or other intellectual property right of ati covering or relating to any comb ination, machine, or process in which such products or servi ces might be or are used. ati?s publication of information regarding any third party?s products or services doe s not constitute ati?s approval, warranty or endorsement thereof. 6. ip (intellectual property) ownership: ati retains the ownership of full rights for special technol ogies and/or techniques embed ded in its products, the designs for mechanics, optics, plus all m odifications, improvements, and inventions made by ati for its products and/or project s. t
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