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
–
3.000 MHz 70.000 MHz
Standard Specifications
°
± 30 PPM is standard, tighter tolerances available
Calibration Frequency Tolerance at 25 C
Operating Temperature Range (OTR)
Frequency Stability (FS) over OTR
Drive Level
Aging at 25°C
Shunt Capacitance
0 to +70°C is standard, but can be extended to -40 to +85°C
± 50 PPM is standard, tighter tolerances available
50 μW is standard, customer may specify
± 5 PPM per year is standard, customer may specify ± 1 PPM
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
ESR Values
Portions of the part number that appear after the frequency may not
be marked on part (C of C provided)
Oscillation
Mode
Frequency Range
(MHz)
Maximum
ESR (Ohms)
SM42 B E - xx - 70.0M - XXX (Internal Code or blank)
–
Fundamental
AT Cut
200
150
120
100
80
3.000
4.000
5.000
6.000
7.000
3.999
4.999
5.999
6.999
7.999
–
–
–
–
–
Model
Frequency in MHz
Load Capacitance
SM42: 4.6 mm
SM30: 3.5mm
SM25: 2.7mm
Parallel Resonance in pF (3 10 pF)
50
40
8.000 12.999
SR = Series Resonance
–
13.000 30.000
Cal Tol / Freq Stability
Blank = 30/50
3rd Overtone
AT Cut
–
100
25.000
70.000
Temperature Range
B = 30/30
C = 15/30
Blank: 0 to +70°C
E: - 40 to +85°C
H: - 20 to +70°C
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.
Solder Pads
Mechanical: inches (mm)
not to scale
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
Packaging
24mm tape
16mm pitch
.508 (12.9) MAX
.453 (11.5) MAX
.181 (4.6)
.06 (1.5)
.185 (4.7) MAX
.189 (4.8)
Feb 2006
Pl tronics, Inc. (425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
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