actual size
SMQ series • SMU2
surface mount quartz crystal
features
s
package height of 2.8 mm only
s
wide frequency range
type
frequency
SMU2
(HC49/U2H - SMD)
8.0 MHz ~ 33.8 MHz fundamental AT-cut
30.0 MHz ~ 70.0 MHz 3rd overtone AT-cut
27.0 MHz ~ 48.0 MHz
fundamental BT-cut
± 50 ppm
+ 10 / -90 ppm
-20 °C ~ +70 °C
-40 °C ~ +90 °C
12 pF ~ 30 pF / series
< 5 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
± 50 ppm
-20 °C ~ +70 °C
-40 °C ~ +90 °C
12 pF ~ 30 pF / series
< 5 pF
100 µ W
< ± 5 ppm
± 30 ppm
± 100 ppm
-40 °C ~ +85 °C
-40 °C ~ +90 °C
12 pF ~ 30 pF / series
< 5 pF
100 µ W
< ± 5 ppm
order information example:
Q - 25.0 - SMU2 - 30 - 30 / 50 - T1
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
SMU2
30 pF
± 30 ppm
± 50 ppm
-40 °C ~ +85 °C (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 • SMU2
dimensions
3.8 max.
12.9
±0.3
0.3 max.
0.75
±0.2
pad layout
4.4
4.8 max.
2.8 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
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 ~ 33.80
27.0 ~ 48.0
30.0 ~ 70.0
cut
AT
AT
AT
AT
AT
AT
AT
BT
AT
vibration
mode
fund
fund
fund
fund
fund
fund
fund
fund
3rd OT
Rs max.
in
Ω
70
50
50
50
50
50
50
50
100
Rs typ.
in
Ω
20 ~ 40
15 ~ 35
15 ~ 35
10 ~ 15
10 ~ 15
10 ~ 15
10 ~ 15
10 ~ 15
80
C
1
typ.
in fF
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
time (seconds)
The pulse of progress
Quartz Crystals
51单片机
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