Pl tronics, Inc.
.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
SM12T Crystal
4 Pad 6x3.5mm Surface Mount Crystal (Metal Cover Seam Sealed to Ceramic Base)
Solder Pad Compatible with our SM12H
Standard Specifications
Calibration Frequency Tolerance at 25
°
C
Operating Temperature Range (OTR)
Frequency Stability (FS) over OTR
Drive Level
Aging at 25°C
±30 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
100
mW
is standard, customer may specify
± 5 PPM maximum
ESR Values
Oscillation
Mode
Frequency Range
(MHz)
Maximum
ESR (Ohms)
10.001 MHz
–
50.000 MHz
Part Numbering Guide
Portions of the part number that appear after the frequency may not
be marked on part (C of C provided)
SM12T B E - xx - 50.0M - XXX
(Internal Code or blank)
Fundamental
AT Cut
Model
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
10.001
11.001
12.001
14.001
–
–
–
–
11.000
12.000
14.000
50.000
60
50
40
30
Cal Tol / Freq Stability
Blank = 50/50
A = 30/50
B = 30/30
C = 15/30
D = 10/20 (consult factory)
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
Packaging
16mm tape
8mm pitch
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.
.043 (1.1)
CASE
.236 (6.0 ± .2)
PLE
.098 (2.5)
.138
(3.5 ± .2)
Pl tronics, Inc.
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
PLE
CASE
.047 (1.2)
MAX
Recommend connecting
Case pads to GND
.079 (2.0)
.055 (1.4)
Jan 2005
31
嵌入式系统
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