21
Specifications (characteristics)
Recommended soldering pattern
External dimensions
(Unit: mm)
Internal connection in MC-405
Internal connection in MC-406
(Unit: mm)
#4
#4
#3
#1
#2
#4
#3
#1
#2
#3
#1
2.54
2.54
0.51
0.51
2.29
4.1
3.9
4.1
4.1
3.9
4.1
#2
3.15
1.5
1.5
4.1
0.8
0.2 Min.
3.6 Max.
4.06 Max.
9.6
10.41 Max.
32.768k
6571A
E
Do not connect
#2 and #3 of MC-406 to external device.
The first digit of No. means: 5XXXX MC-405
6XXXX MC-406
MC-406
MC-405
Crystal unit
SMD LOW/ MEDIUM-FREQUENCY CRYSTAL UNIT
MC-405/406
High-density mounting-type SMD.
Photolithography finished allows uniform, stable performance.
Excellent environmental capability.
Capable of covering low-frequency range from 20 kHz to 165 kHz.
Suitable for time keeping of clock and microcomputer.
Item
Nominal frequency range
Temperature range
Maximum drive level
Frequency tolerance (standard)
Turnover temperature (frequency)
Temperature coefficient (frequency)
Load capacitance
Series resistance
Motion capacitance
Shunt capacitance
Insulation resistance
Aging
Shock resistance
Symbol
f
T
STG
T
OPR
GL
f/f
T
a
C
L
R
1
C
1
C
0
IR
fa
S.R.
Specifications
32.768 kHz
20.000 kHz to 165.000 kHz
-55 C to +125 C
-40 C to +85 C
1.0 W Max.
20 x 10
-6
, 50 x 10
-6
50 x 10
-6
, 100 x 10
-6
+25 C 5 C
-0.04 x 10
-6
/ C
2
Max.
6 pF to (Standard : 12.5 pF)
50 k Max. 55
k to 10 k
2.0 fF Typ.
4.0 fF to 0.6 fF
0.85 pF Typ.
2.0 pF to 0.6 pF
500 M Min.
3 x 10
-6
/year Max.
5 x 10
-6
/year Max.
5 x 10
-6
Max.
Remarks
Stored as bare product after unpacking
Ta=+25 C, DL=0.1 W
Please specify
For details, refer to page 13
Ta=+25 C3 C, first year
Three drops on a hard board from 750 mm
or excitation test with 29400 m/s
2
x 0.3 ms x
1/2 sine wave x 3 directions
Storage temperature
Operating temperature
Actual size
Product number (please refer to page 1)
Q1 xMC 4 0 5 x x x x x 0 0
Q1 xMC 4 0 6 x x x x x 0 0
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