actual size
SMQ series • SMU4
surface mount quartz crystal
features
s
wide frequency range
s
extended temperature range
type
frequency
SMU4
(HC49/U4H - SMD)
3.579545 MHz ~ 25 MHz fundamental AT-cut
27.0 MHz ~ 50.0 MHz 3rd overtone AT-cut
24.0 MHz ~ 40.0 MHz
fundamental BT-cut
± 50 ppm
+10/-100 ppm
-20 °C ~ +70 °C
-40 °C ~ +90 °C
12 pF ~ 30 pF / series
< 7 pF
100 µ W
< ± 5 ppm
frequency tolerance at 25 °C
frequency temp. characteristic
operating temperature
storage temperature
load capacitance C
L
shunt capacitance C
O
drive level max.
aging
± 30 ppm
± 30 ppm
± 30 ppm
± 50 ppm standard
± 30 ppm
± 100 ppm
-40 °C ~ +85 °C
-40 °C ~ +90 °C
12 pF ~ 30 pF / series
< 7 pF
100 µ W
< ± 5 ppm
-20 °C ~ +70 °C
-40 °C ~ +90 °C
12 pF ~ 30 pF / series
< 7 pF
100 µ W
< ± 5 ppm
order information example:
Q - 25.0 - SMU4 - 30 - 30 / 50 - BT
1.
1.
2.
3.
4.
5.
6.
7.
option table:
• FUND – fundamental tone
• BT
• 3 OT
• T1
– BT-cut
– 3rd overtone
– -40 °C ~
+85 °C
2.
3.
4.
5.
6.
7.
quartz:
frequency:
type:
load capacitance:
frequency stability at 25 °C:
frequency vs temperature:
special requirement:
Q
25.0 MHz
SMU4
30 pF
± 50 ppm
± 50 ppm
BT-cut (see option table)
date code
Jan. Febr. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec.
1999
2000
2001
2002
a
n
A
N
b
p
B
P
c
q
C
Q
d
r
D
R
e
s
E
S
f
t
F
T
g
u
G
U
h
v
H
V
j
w
J
W
k
x
K
X
l
y
L
Y
m
z
M
Z
marking:
frequency with C
L
code / company code / date code / internal code
example:
25 a 00 J n
date code / internal code
company code
load capacitance code (T = 3rd OT)
frequency in MHz (4 digits max.)
The pulse of progress
SMQ series • SMU4
dimensions
3.8 max.
12.9
±0.3
4.0 max.
0.3 max.
0.75
±0.2
pad layout
4.4
4.8 max.
10.1 max.
11.5
±0.2
3.7
±0.3
5.5
5.5
top view
side view
bottom view
2.0
in mm
taping specification
1.75
±0.3
ø 1.5
±0.1
2.0
±0.1
4.0
±0.1
0.4
±0.1
test conditions:
a) acceleration:
b) shock (random drop):
c) vibration:
d) solderability:
1000 g /0.5 ms, 1/2 sine wave
height 75 cm, 3 times to hardwood surface
(∆R/R
≤
20%;
∆f/f ≤
± 5 ppm)
f = 10 Hz ~ 55 Hz; amplitude = 1.5 mm;
period = about 1 minute; time = 2 h each direction
according to DIN 68-2-58
24.0
±0.3
11.5
±0.1
13.4
±0.3
5.0
±0.6
8.0
±0.2
ø 2.2
±0.2
3.5
±0.2
Direction of feed
1000 pcs per reel
in mm
standard load
capacitance codes
12 pF:
a
b
f
c
g
24 pF:
30 pF:
32 pF:
series:
d
.
e
s
16 pF:
18 pF:
20 pF:
22 pF:
reflow soldering profile
temperature (°C)
235
±5
reflow
series resistance (Rs) / motional capacitance (C
1
) table
frequency
in MHz
3.5 ~ 3.69
3.7 ~ 3.99
4.0 ~ 4.09
4.1 ~ 4.39
4.4 ~ 4.99
5.0 ~ 5.99
6.0 ~ 6.99
7.0 ~ 7.99
8.0 ~ 9.99
10.0 ~ 11.99
12.0 ~ 13.99
14.0 ~ 15.99
16.0 ~ 17.99
18.0 ~ 19.99
20.0 ~ 25.0
27.0 ~ 50.0
24.0 ~ 40.0
cut
AT
AT
AT
AT
AT
AT
AT
AT
AT
AT
AT
AT
AT
AT
AT
BT
AT
vibration
mode
fund
fund
fund
fund
fund
fund
fund
fund
fund
fund
fund
fund
fund
fund
fund
fund
3rd OT
Rs max.
in
Ω
180
150
150
130
120
120
80
75
70
50
50
50
50
50
50
50
100
Rs typ.
in
Ω
60 ~80
50 ~ 70
50 ~ 70
40 ~ 60
40 ~ 60
35 ~ 55
25 ~ 45
20 ~ 40
15 ~ 35
15 ~ 35
10 ~ 15
10 ~ 15
10 ~ 15
10 ~ 15
10 ~ 15
80
C
1
typ.
in fF
4.0 ~ 4.5
4.5 ~ 4.8
4.8 ~ 5.0
5.0 ~ 5.5
5.5 ~ 6.0
6.0 ~ 7.0
7.0 ~ 10
10 ~ 12
12 ~ 14
12 ~ 16
16 ~ 17
18 ~ 20
20 ~ 22
22 ~ 26
10 ~15
0.8 ~ 2.5
preheating
150
±10
cooling
60 - 120
20
10
20
70 ~ 100 3.5 ~ 4.0
time (seconds)
The pulse of progress
Quartz Crystals
微控制器 MCU
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