MC-306 Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – kHz RANGE CRYSTAL UNIT SMD

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 120 kHz)
: 8.0 × 3.8 × 2.54 mm ···MC-306
10.41 × 4.06 × 3.6 mm ···MC-405 / 406
: Fundamental
: Clock and Microcomputer
Actual size
MC-306
Product Number (please contact us)
MC-306 : Q1xMC3062xxxx00
MC-405 : Q1xMC4052xxxx00
MC-406 : Q1xMC4062xxxx00
MC-405 / 406
Specifications (characteristics)
Item
Nominal frequency range
Storage temperature
Operating temperature
Level of drive
Frequency tolerance (standard)
Turnover temperature
Parabolic coefficient
Load capacitance
Motional resistance (ESR)
Motional capacitance
Symbol
f_nom
T_stg
T_use
DL
f_tol
Ti
B
CL
R1
C1
Shunt capacitance
Frequency aging
C0
f_age
Specifications
32.768 kHz
20 kHz to 120 kHz
-55 C to +125 C
-40 C to +85 C
1.0 W Max.
20  10^-6, 50  10^-6
50  10^-6, 100  10^-6
+25 C 5 C
-0.04  10^-6 / °C² Max.
6 pF to  (standard :12.5 pF)
50 k Max.
As per table below
1.8 fF Typ.
2.0 fF Typ.
4.0 fF to 0.6 fF
0.9 pF Typ.
0.85 pF Typ.
3  10^-6 / year Max.
2.0 pF to 0.6 pF
5  10^-6 / year Max.
Conditions / Remarks
Please contact us about available frequencies.
Storage as single product.
+25 C, DL=0.1 W
Please specify
MC-306
MC-405 / 406
MC-306
MC-405 / 406
+25 C, First year
Motional resistance (ESR)
Frequency
Motional resistance
20 kHzf_nom< 31.2 kHz
55 k Max.
31.2 kHzf_nom< 40 kHz
35 k Max.
40 kHzf_nom< 90 kHz
20 k Max.
90 kHzf_nom120 kHz
12 k Max.
External dimensions
.
(Unit:mm)ç
MC-306
8.0 Max.
#4
#3
32.768 k
E 571
#1
#2
Internal connection
(TOP VIEW)
#4
#3
#1
#2
MC-405 / 406
Internal connection in MC-405
(TOP VIEW)
#4
#3
#4
32.768 k
#3
#1
#2
#1
E 6571A
#2
Internal connection in MC-406
(TOP VIEW)
#4
#3
9.60
10.41 Max.
#1
#2
0.5
5.5
1.9
(0.9)
(0.9)
Do not connect #2 and #3 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.
Footprint (Recommended)
MC-306
MC-405
0.51
0.51
2.54
2.54
2.29
Do not connect #2 and #3 of MC-406 to external device.
The first digit of No. means: 5×××× MC-405
6×××× MC-406
(Unit:mm)ç
MC-406
1.3
4.2
1.3
4.1
3.9
4.1
4.1
3.9
4.1