Pl tronics, Inc.
.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
SM39S Crystal
4 Lead Surface Mount Plastic Crystal
Solder Pad Compatible with our SM55, SM45, SM40 and other
SM Crystals from Epson, Meiden & Citizen
Standard Specifications
Calibration Frequency Tolerance at 25
°
C
Operating Temperature Range (OTR)
Frequency Stability (FS) over OTR
Drive Level
Aging at 25°C
Shunt Capacitance
± 50 PPM is standard, tighter tolerances available
0 to +70°C is standard, but can be extended to -40 to +85°C
± 50 PPM is standard, tighter tolerances available
50
mW
is standard, customer may specify
± 5 PPM per year
7 pF maximum
ESR Values
Oscillation
Mode
Frequency Range
(MHz)
Maximum
ESR (Ohms)
3.500 MHz
–
70.000 MHz
Part Numbering Guide
Portions of the part number that appear after the frequency may not
be marked on part (C of C provided)
SM39S B E - xx - 70.0M - XXX
(Internal Code or blank)
Fundamental
AT Cut
Model
Cal Tol / Freq Stability
Blank = 50/50
A = 30/50
B = 30/30
C = 15/30
D = 10/20 (consult factory)
Frequency in MHz
Load Capacitance
Parallel Resonance in pF (
³
10
pF)
SR = Series Resonance
Temperature Range
Blank: 0 to +70
°
C
E: - 40 to +85
°
C
H: - 20 to +70
°
C
3.500
4.000
6.000
10.000
–
–
–
–
3.999
5.999
9.999
34.000
200
150
100
50
100
80
3rd Overtone
AT Cut
27.000 – 35.999
36.000 – 70.000
Consult factory for lower ESR
Consult factory for available frequencies and specs.
Not all options available for all frequencies. A special part number may be assigned.
Mechanical: inches (mm)
not to scale
Solder Pads
Due to part size and factory abilities, part marking may vary from lot to lot and may contain our part number or an internal code.
Packaging
24mm tape
12mm pitch
4
.492 (12.5) MAX
.181 (4.6) MAX
4
3
.146 (3.7)
MAX
.299 (7.6)
GND
3
.067 (1.7)
1
GND
2
.07 (1.8)
1
.370 (9.4)
2
.07 (1.8)
Sept 2003
Pl tronics, Inc.
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
38
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