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
Calibration Frequency Tolerance at 25 C ± 30 PPM is standard, tighter tolerances available
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
Consult factory for available frequencies and specs.
°
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www .pletronics.com 36
Pl tronics, Inc.
Mechanical: inches (mm) not to scale
Not all options available for all frequencies. A special part number may be assigned.
ESR Values
3.000 MHz – 70.000 MHz
Feb 2006
.406 (10.3) MAX
.508 (12.9) MAX
.453 (11.5) MAX
.185 (4.7) MAX
SM42: .181 (4.6) MAX
SM30: .138 (3.5) MAX
SM25: .106 (2.7) MAX
.06 (1.5)
.189 (4.8)
.181 (4.6)
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.
Pl tronics, Inc.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
.
Portions of the part number that appear after the frequency may not
be marked on part (C of C provided)
Model Frequency in MHz
Temperature Range
SM42 B E - xx - 70.0M - XXX (Internal Code or blank)
Load Capacitance
Parallel Resonance in pF (3 10 pF)
SR = Series Resonance
Blank: 0 to +70°C
E: - 40 to +85°C
H: - 20 to +70°C
Cal Tol / Freq Stability
Blank = 30/50
B = 30/30
C = 15/30
D = 10/20 (consult factory)
SM42: 4.6 mm
SM30: 3.5mm
SM25: 2.7mm
Packaging
24mm tape
16mm pitch
Oscillation MaximumFrequency Range
3.000 – 3.999
Fundamental
AT Cut 200
4.000 – 4.999 150
3rd Overtone
AT Cut
Consult factory for lower ESR
Mode (MHz) ESR (Ohms)
5.000 – 5.999 120
6.000 – 6.999 100
7.000 – 7.999 80
8.000 – 12.999 50
13.000 – 30.000 40
25.000 – 70.000 100
