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Crystal unit
kHz RANGE CRYSTAL UNIT
SMD
MC - 306 MC - 405 / MC - 406
*Frequency range *Thickness *Overtone order *Applications 32.768 kHz (20 kHz to 165 kHz) 2.54 mm Max.(MC-306) 3.60 mm Max.(MC-405 / 406) : Fundamental /Overtone (307.2 kHz) : Clock and Microcomputer : : Actual size MC-306 MC-405 / 406
Specifications (characteristics)
Item Nominal frequency range Temperature Storage temperature range Operating temperature Level of drive Frequency tolerance (standard) Turnover temperature Parabolic coefficient Load capacitance Motional resistance (ESR) Motional capacitance Shunt capacitance Frequency aging Symbol f T_stg T_use DL f_tol Ti B CL R1 C1 C0 f_age Specifications 20 kHz to 165 kHz 307.2 kHz(MC-405 / 406) -55 C to +125 C -40 C to +85 C 1.0 W Max. -6 20 x 10 , 50 x 10-6 50 x 10-6, 100 x 10-6 +25 C 5 C -0.04 x 10-6 / C2 Max. 6 pF to (standard :12.5 pF) 50 k Max. 55 k to 6 k 1.8 fF Typ. 4.0 fF to 0.6 fF 2.0 fF Typ. 0.9 pF Typ. 2.0 pF to 0.6 pF 0.85 pF Typ. -6 -6 3 x 10 / year Max. 5 x 10 / year Max. 32.768 kHz Remarks Please contact us regarding available frequencies Store as bare product after unpacking +25 C, DL=0.1 W
Please specify As per below table MC-306 MC-405 / 406 MC-306 MC-405 / 406 +25 C, First year
Motional resistance (ESR)
Frequency Motional resistance 20 kHzf< 31.2 kHz 55 k Max. 31.2 kHzf< 40 kHz 35 k Max. 40 kHzf< 90 kHz 20 k Max. 90 kHzf< 130 kHz 12 k Max. 130 kHzf165 kHz 10 k Max. 307.2 kHz 6 k Max.
.
External dimensions
MC-306
8.0 Max. #4 #3 4.06 Max. Internal connection #4 #3 #1
(Unit:mm)
MC-405 / 406
Internal connection in MC-405 #4 3.8 Max. #4 #3 #2
32.768 k 5 71 E
#1 #2
32.768 k E 6571A
9.60 10.41 Max.
#3
#1
3.2
#2
Internal connection in MC-406 #4 #1 #3 #2
#1 2.54 Max.
#2
2.38
0.5
0.2 Min.
3.6 Max.
3.15
5.5 (0.9) Do not connect #2 and #3 to external device. Metal may be exposed on the top or bottom of this product. This will not affect any quality, reliability or electrical spec.
1.9 (0.9) 2.54 2.54
0.51 2.29
0.51
Do not connect #2 and #3 of MC-406 to external device. The first digit of No. means: 5xxxx 6xxxx MC-405 MC-406
Footprint (Recommended)
(Unit:mm)
MC-306
MC-405
MC-406
1.52 4.1 4.1 3.9 4.1
1.9
1.3
1.3
4.2
1.3
1.9
4.1
3.9
4.1
http://www.epsontoyocom.co.jp
7
1.52
0.8
"3D STRATEGY" EPSON TOYOCOM
In order to meet customer needs in a rapidly advancing digital, broadband and ubiquitous society, we are committed to offering products that are one step ahead of the market and a rank above the rest in quality. To achieve our goals, we follow a "3D (three device) strategy" designed to drive both horizontal and vertical growth. We will to grow our three device categories of "Timing Devices", "Sensing Devices" and "Optical Devices", and expand vertical growth through a combination of products from these categories. Quartz devices 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 "Digital Convergence" solutions to problems arising with products for consumer use, such as, core network systems and automotive systems.
PROMOTION OF ENVIRONMENTAL MANAGEMENT SYSTEM CONFORMING TO INTERNATIONAL STANDARDS
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. All of our major manufacturing and non-manufacturing sites, in Japan and overseas, completed the acquisition of ISO 14001 certification. In the future, new group companies will be expected to acquire the certification around the third year of operations. 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 regarding global warming, destruction of the ozone layer, and global deforestation.
WORKING FOR HIGH QUALITY
Epson Toyocom quickly began working to acquire company-wide ISO 9000 series certification, and has acquired ISO 9001 or ISO 9002 certification for all targeted products manufactured in Japanese and overseas plants. Epson Toyocom has acquired QS-9000 certification, which is of a higher level. Also, TS 16949 certification, which is also of a higher level, has been acquired.
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/TS 16949 is a global standard based on QS-9000, a severe standard corresponding to the requirements from the automobile industry.
Notice
This 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 circuitry, programming, usage, etc., written in this material is intended for reference only. Epson Toyocom does not assume any liability for the occurrence of infringing on any patent or copyright of a third party. This material does not authorize the licensing on for any patent or intellectual copyrights. Any product described in this material may contain technology or the subject relating to strategic products under the control of the Foreign Exchange and Foreign Trade Law of Japan and may require an export license 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 extremely high reliability, such as the applications stated below, you must obtain 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 security equipment / traffic control equipment / and others requiring equivalent reliability. In this new crystal master for Epson Toyocom, product codes and markings will remain as previously identified prior to the merger. Due to the on-going strategy of gradual unification of part numbers, please review product codes and markings, as they will change during the course of the coming months. We apologize for the inconvenience, but we will eventually have a unified part numbering system for Epson Toyocom that will be user friendly.

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