actual size http://www.epsontoyocom.co.jp crystal unit crystal unit crystal unit crystal unit 11 s p ecifications ( characteristics ) item symbol specifications remarks nominal frequency range f 32.768 khz 32 khz to 100 khz please contact us for inquiries regarding available frequencies storage temperature t_stg -55 c to +125 c stored as bare product after unpacking temperature range operating temperature t_use -40 c to +85 c level of drive dl 1.0 w max. operating drive level 0.5 w max. frequency tolerance (standard) f_tol 20 10 -6 , 50 10 -6 50 10 -6 , 100 10 -6 +25 c, dl=0.1 w turnover temperature ti +25 c 5 c parabolic coefficient b -0.04 10 -6 / c 2 max. load capacitance cl 7 pf, 12.5 pf please specify motional resistance (esr) r 1 65 k ? max. 65 k ? to 25 k ? motional capacitance c 1 1.9 ff typ. 2.5 ff to 0.6 ff shunt capacitance c 0 0.8 pf typ. 1.2 pf to 0.5 pf frequency aging f_age 3 10 -6 / year max. +25 c, first year external dimensions ( unit:mm ) ? . foot p rint ( recommended ) ( unit:mm ) ? mc-146 mc-156 khz range crystal unit low profile smd mc - 146 / 156 ? frequency range : 32.768 khz (32 khz to 100 khz) ? thickness : 1.4 mm max. (mc-146) : 1.5 mm max. (mc-156) ? overtone order : fundamental ? applications : small communications devices ? lead(pb)-free : contains high melting temperature type solder (pb85 %) exempted by rohs directive. #1 #2 #3 #4 2.50 3.3 max. 1.30 1.5 max. (0.75) 1.6 5.08 7.1 max. 0.4 (0.75) mc-156 #1 #2 #4 #3 i nternal c onnect ion 0.55 6.7 #1 #2 #3 #4 1. 5 max. 0.15 1.4 max. #1 0.4 0.1 0.1 7.0 max. 0.3 0.3 #4 #3 #2 0.4 0.25 0.2 0.2 0.2 #1 #2 #4 #3 internal connection mc-146 metal may be exposed on the top or bottom of this product. this w ill not affect any quality, reliability or electrical spec. do not connect #2 and #3 to external device. e a 9 9 e a 8 9 mc-146 mc-156 1.2 5.1 1.2 0.6 0.6 0.3 1.2 3.88 1.5 1.5 1.0 1.2
end to end epson toyocom the development of our ubiquitous network society has caused a diversification of applications and has increased the demand for high-level quartz devices in terms of quality, quantity, and function. the quartz device operations division of seiko epson corporation (epson)and toyo communication equipment co.,ltd.(toyocom) were integrated on october 1,2005 to establish a new company, epson toyocom corporation, to meet these market and customer demands. each company contributes its own strength; epson holds a strong presence in consumer products and toyocom is strong in industrial products. the consolidation of these two companies in a new company that provides advanced expertise with a wide range of products for terminals and infrastructure to our customers. quartz device have become crucial in the network environment where products are increasingly intended for broadband, ubiquitous applications and where various types of terminals can transfer information almost immediately via lan and wan on a global scale. epson toyocom corporation addresses every single aspect within a network environment. the new corporation offers ?end-to-end? solutions to problems arising with products for consumer use, such as core network systems and automotive systems. promotion of environmental management system conforming international standard at epson toyocom, all environmental initiatives operate under the plan-do-check-action(pdca) cycle designed to achieve continuous improvements. the environmental management system (ems) operates under the iso 14001 environmental management standard. in may 2001, all of our major manufacturing and non-manufacturing sites, in japan and overseas, completed the acquisition of is o 14001 certification. in the future, new group companies will be expected to acquire the certification around the third year of operations. working for high quality epson toyocom quickly began working to aquire company-wide iso 9000 series certification, and has acquired iso 9001 or iso 9002 certification with all targeted products manufactured in japanese and overseas plants. the quartz device operations division (ina japan,epm and sze) have acquired qs-9000 certification, which are of higher level. also qs-9000 and ts 16949 certification, which is of higher level, has been acquired. notice the material is subject to change without notice. any part of this material may not be reproduced or duplicated in any form or any means without the written permission of epson toyocom. the information, applied circuit, program, usage etc., written in this material is just for reference. epson toyocom does not assume any liability for the occurrence of infringing any patent or copyright of a third party. this material does not authorize the licensing for any p atent or intellectual copyrights. any product described in this material may contain technology or the subject relating to strategic products under the control o f the foreign exchange and foreign trade law of japan and may require an export licence from the ministry of international trade and industry or other approval from another government agency. these products are intended for general use in electronic equipment. when using them in specific applications that require extr emely high reliability such as applications stated below, it is required to obtain the permission from epson toyocom in advance. / space equipment (artificial satellites, rockets, etc) / transportation vehicles and related (automobiles, aircraft, trains, vessels, etc) / medical instruments to sustain life / submarine transmitters / power stations and related / fire work equipment and securit y equipment / traffic control equipment / and others requiring equivalent reliability. in this new crystal master for epson toyocom, product c ode and marking will still remain as previously identified prior to the merger. due to the on going strategy of gradual unification of part numbers, please review product code and marking as they will change during the course of the coming mo nths . we apologize for the inconvenience, but we will eventually have a unified part numbering system for epson toyocom which will be user frie ndly. qs-9000 is an enhanced standard for quality assurance systems formulated by leading u.s.automobile manufacturers based on the international iso 9000 series. iso 14000 is an international standard for environmental management that was established by the international standards organization in 1996 against the background of growing concern re g ardin g g lobal warmin g , destruction of the ozone layer, and global deforestation. iso/ts 16949 is a g lobal standard based on qs-9000, a severe standard corres p ondin g to the requirements from automobile i ndustry.
7/21/2005 product configuration system 32.7680khz crystals (tuning fork crystal) mc-156 32.7680k a - 32.7680khz crystal package type: mc-146: 4pin ?j? lead smd, 1.4mm height mc-156: 4pin ?j? lead smd, 1.5mm height mc-206*: 4pin sop, 2.0mm height frequency 32.7680khz k: in khz frequency tolerance@25c a: +/-20ppm (standard) load capacitance a: 12.5pf ac: 9pf ag: 7.0pf notes: 1) this product configuration guide is applicable only to 32.7680khz crystals. for other frequencies, please reference the standard khz crystal product configuration system. 2) if you require a load capacitance other than the above listed, please contact your eea representative for assistance. packaging tape & reel qty 3: 250pcs/reel 0: 1000pcs/reel 5: 3000pcs/reel 5 a blank : not rohs compliant rohs rohs : mc-206: not recommended for new designs
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