Crystal unit
Product Number (please contact us)
kHz RANGE CRYSTAL UNIT
MC-306 : Q1xMC3062xxxx00
MC-405 : Q1xMC4052xxxx00
MC-406 : Q1xMC4062xxxx00
MC-306 / MC-306 TYPE
MC-405 / MC-405 TYPE
MC-406 / MC-406 TYPE
Frequency range : MC-306 / 405 / 406 32.768 kHz
: MC-306 / 405 /406TYPE 20 kHz to 120 kHz
Thickness : 8.0 3.8 2.54 mm MC-306
Actual size
: 10.41 4.06 3.6 mm MC-405 / 406
MC-306 MC-405 / 406
Overtone order : Fundamental
Applications : Clock and Microcomputer
Specifications (characteristics)
Specifications
Item Symbol MC-306 / 405 / 406 MC-306 / 405 /406 TYPE Conditions / Remarks
Nominal frequency range f_nom 32.768 kHz 20 kHz to 120 kHz Please contact us about available frequencies.
Storage temperature T_stg -55 C to +125 C Storage as single product.
Operating temperature T_use -40 C to +85 C
Level of drive DL 1.0 W Max.
-6 -6 -6 -6
Frequency tolerance (standard) f_tol 20 10 , 50 10 50 10 , 100 10 +25 C, DL=0.1 W
Turnover temperature Ti +25 C 5 C
-6 2
Parabolic coefficient B -0.04 10 / C Max.
Load capacitance CL 6 pF to (standard :12.5 pF) Please specify
Motional resistance (ESR) R1 50 k Max. As per table below
1.8 fF Typ. MC-306
Motional capacitance C1 4.0 fF to 0.6 fF
2.0 fF Typ. MC-405 / 406
0.9 pF Typ. MC-306
Shunt capacitance C0 2.0 pF to 0.6 pF
0.85 pF Typ. MC-405 / 406
-6 -6
Frequency aging f_age 3 10 / year Max. 5 10 / year Max. +25 C, First year
MC-306 /405 /406 TYPE Motional resistance (ESR)
Frequency
20 kHzf_nom< 31.2 kHz 31.2 kHzf_nom< 40 kHz 40 kHzf_nom< 90 kHz 90 kHzf_nom 120 kHz
Motional resistance
55 k Max. 35 k Max. 20 k Max. 12 k Max.
Product name MC-306 32.768000kHz 12.5 +20.0-20.0
(Standard form)
-6
Model Frequency Load capacitance(pF) Frequency tolerance( 10 , +25 C)
External dimensions (Unit:mm)
.
Internal connection in MC-405
MC-405 / 406
MC-306
(TOP VIEW)
8.0 Max.
#4
#3
#4 #3
Internal connection
#1 #2
#3
#4 32.768 k
(TOP VIEW)
32.768 k
Internal connection in MC-406
#4 #3
E 6571A
(TOP VIEW)
E 571 #1 #2
#4 #3
9.60
#2
#1
#1
#2
#1
#2 10.41 Max.
0.5
0.51 0.51
1.9
5.5
(0.9)
(0.9) 2.54 2.54
2.29
Do not connect #2 and #3 to external device.
Do not connect #2 and #3 of MC-406 to external device.
The metal case inside of the molding compound may be exposed on the top or bottom of this product.
This purely cosmetic and does not have any effect on quality, reliability or electrical specs.
The first digit of No. means: 5 MC-405
6 MC-406
Footprint (Recommended) (Unit:mm)
MC-306
MC-405 MC-406
4.1 3.9 4.1
4.1 3.9 4.1
1.3
4.2 1.3
2.38
3.2
1.9 1.3 1.9
2.54 Max.
3.8 Max.
4.1
0.2 Min.
3.15
4.06 Max.
3.6 Max.
1.52 1.52
0.8
PROMOTION OF ENVIRONMENTAL MANAGEMENT SYSTEM
CONFORMING TO INTERNATIONAL STANDARDS
At Seiko Epson, all environmental initiatives operate under the
Plan-Do-Check-Action (PDCA) cycle designed to achieve continuous
ISO 14000 is an international standard for environmental
improvements. The environmental management system (EMS)
management that was established by the International
operates under the ISO 14001 environmental management standard.
Standards Organization in 1996 against the background of
All of our major manufacturing and non-manufacturing sites, in growing concern regarding global warming, destruction of
the ozone layer, and global deforestation.
Japan and overseas, completed the acquisition of ISO 14001
certification.
WORKING FOR HIGH QUALITY
In order provide high quality and reliable products and services
than meet customer needs,
ISO/TS16949 is the international standard that added the
Seiko Epson made early efforts towards obtaining ISO9000 series
sector-specific supplemental requirements for automotive
certification and has acquired ISO9001 for all business
industry based on ISO9001.
establishments in Japan and abroad. We have also acquired ISO/TS
16949 certification that is requested strongly by major automotive
manufacturers as standard.
Explanation of the mark that are using it for the catalog
Pb free.
Complies with EU RoHS directive.
*About the products without the Pb-free mark.
Contains Pb in products exempted by EU RoHS directive.
(Contains Pb in sealing glass, high melting temperature type solder or other.)
Designed for automotive applications such as Car Multimedia, Body Electronics, Remote Keyless Entry etc.
Designed for automotive applications related to driving safety (Engine Control Unit, Air Bag, ESC etc ).
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 Seiko Epson.
The information about applied data, circuitry, software, usage, etc. written in this material is intended for reference only. Seiko Epson
does not assume any liability for the occurrence of customer damage or infringing on any patent or copyright of a third party. This
material does not authorize the licensing for any patent or intellectual copyrights.
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weapon of mass destruction or for other military purposes. You are also requested that you would not make the products available to
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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 Seiko Epson 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.
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Seiko Epson Corporation