Pl tronics, Inc.
.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
SM42, SM30, SM25 Crystal
HC-49/US Low Profile Crystal Mounted on Surface Mount Platform (HC-49/SMD)
Available in 3 heights, SM42: 4.6mm, SM30: 3.5mm, SM25: 2.7mm
Standard Specifications
± 30 PPM is standard, tighter tolerances available
Calibration Frequency Tolerance at 25
°
C
Operating Temperature Range (OTR)
0 to +70°C is standard, but can be extended to -40 to +85°C
Frequency Stability (FS) over OTR
± 50 PPM is standard, tighter tolerances available
Drive Level
50
μW
is standard, customer may specify
Aging at 25°C
± 5 PPM per year is standard, customer may specify ± 1 PPM
Shunt Capacitance
7 pF maximum
Pullability
May be specified by customer in terms of frequency shift required over a certain range of load capacitance
(e.g. +100 PPM from CL=12 to CL=18 pF) or as motional capacitance ( fF )
Part Numbering Guide
Portions of the part number that appear after the frequency may not
be marked on part (C of C provided)
SM42 B E - xx - 70.0M - XXX
(Internal Code or blank)
3.000 MHz
–
70.000 MHz
ESR Values
Oscillation
Mode
Frequency Range
(MHz)
Maximum
ESR (Ohms)
Model
SM42: 4.6 mm
SM30: 3.5mm
SM25: 2.7mm
Cal Tol / Freq Stability
Blank = 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
Fundamental
AT Cut
3.000
4.000
5.000
6.000
7.000
8.000
13.000
– 3.999
– 4.999
– 5.999
– 6.999
– 7.999
– 12.999
– 30.000
200
150
120
100
80
50
40
100
3rd Overtone
AT Cut
25.000 – 70.000
Consult factory for available frequencies and specs.
Not all options available for all frequencies. A special part number may be assigned.
Consult factory for lower ESR
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.
.406 (10.3) MAX
SM42: .181 (4.6) MAX
SM30: .138 (3.5) MAX
SM25: .106 (2.7) MAX
.508 (12.9) MAX
.453 (11.5) MAX
.181 (4.6)
Packaging
24mm tape
16mm pitch
.185 (4.7) MAX
.06 (1.5)
.189 (4.8)
Feb 2006
Pl tronics, Inc.
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
36
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