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actual size
surface mount quartz crystal
features s wide frequency range s extended frequency range
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SMQ series * SMU3
type frequency 3.2768 MHz ~ 3.49 MHz fundamental AT-cut frequency tolerance at 25 C frequency temp. characteristic operating temperature storage temperature load capacitance CL shunt capacitance CO drive level max. aging 50 ppm 100 ppm -20 C ~ +70 C -40 C ~ +90 C 12 pF ~ 30 pF / series < 5 pF 100 W < 5 ppm
SMU3 (HC49/U3H - SMD) 3.579545 MHz ~ 33.8 MHz fundamental AT-cut 30.0 MHz ~ 70.0 MHz 3rd overtone AT-cut 30 ppm 50 ppm -20 C ~ +70 C -40 C ~ +90 C
12 pF ~ 30 pF / series < 5 pF
order information example:
Q - 25.0 - SMU3 - 30 - 30 / 50 - T1
1.
1. 2. 3. 4. 5. 6. 7.
2.
3.
4.
5.
6.
7.
quartz: frequency: type: load capacitance: frequency stability at 25 C: frequency vs temperature: special requirement:
date code
1999 2000 2001 2002 a n A N
Jan. Febr. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 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
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Q 25.0 MHz SMU3 30 pF 50 ppm 50 ppm -40 C ~ +85 C (see option table)
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t a
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100 W
< 5 ppm
e h
t e
30 ppm
100 ppm
-40 C ~ +85 C
U 4
< 5 pF
.c
m o
50 ppm + 10 / -90 ppm -20 C ~ +70 C -40 C ~ +90 C < 5 pF 100 W < 5 ppm
27.0 MHz ~ 48.0 MHz fundamental BT-cut
-40 C ~ +90 C
12 pF ~ 30 pF / series
12 pF ~ 30 pF / series
100 W < 5 ppm
option table:
* FUND - fundamental tone * BT * 3 OT * T1 - BT-cut - 3rd overtone - -40 C ~ +85 C
marking:
frequency with CL code / company code / date code / internal code
example: 25 a 00 J n
company code
date code / internal code
load capacitance code (T = 3rd OT) frequency in MHz (4 digits max.)
The pulse of progress
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SMQ series * SMU3
dimensions
3.8 max. 12.9 4.0 max. 0.3 max.
0.3
pad layout
0.750.2 4.4
4.8 max.
10.1 max.
11.50.2
3.70.3
5.5
5.5
top view
side view
bottom view
2.0
in mm
taping specification
1.750.3 o 1.50.1 2.00.1 4.00.1 0.40.1
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
24.00.3
11.50.1
13.40.3
5.00.6
8.00.2
o 2.20.2
3.50.2
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)
2355
reflow
series resistance (Rs) / motional capacitance (C1) table
frequency in MHz 3.2 ~ 3.49 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 ~ 33.8 27.0 ~ 40.0 30.0 ~ 70.0 cut AT 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 fund 3rd OT Rs max. in 300 180 150 150 130 120 120 80 75 70 50 50 50 50 50 50 50 100 Rs typ. in 200 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 C1 typ. in fF 3.5 ~ 4.0 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
15010
cooling
60 - 120 20 10 20
time (seconds)
70 ~ 100 3.5 ~ 4.0
The pulse of progress
Quartz Crystals

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