Pl tronics, Inc.
.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
SM55, SM45, SM40 Crystal
HC-49/US Low Profile Crystal Mounted on a Surface Mount Platform
Available in 3 heights, SM55: 5.5mm, SM45: 4.5mm, SM40: 4.0mm
Solder Pad Compatible with our SM39S and SMD Crystals from Epson, Meiden & Citizen
Available in Standard 4 pad or Optional 2 pad Pinout Style
–
3.200 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)
SM45 B E - xx - 70.0M - XXX (Internal Code or blank)
–
300
120
70
3.200
5.000
8.000
4.999
7.999
11.999
30.000
Fundamental
AT Cut
–
–
–
Model (Height/Pinout)
Frequency in MHz
Load Capacitance
SM55: 2 pad, SMP55: 4 pad (5.5mm)
SM45: 2 pad, SMP45: 4 pad (4.5mm)
SM40: 2 pad, SMP40: 4 pad (4.0mm)
50
12.000
Parallel Resonance in pF (> 9 pF)
3rd Overtone
AT Cut
–
100
25.000
70.000
SR = Series Resonance
Cal Tol / Freq Stability
Blank = 30/50
Temperature Range
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
not to scale
B = 30/30
Blank: 0 to +70°C
E: - 40 to +85°C
Mechanical: inches (mm)
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
PART STYLE MAY BE EITHER OF THE FOLLOWING:
Standard Pinout (SM)
.492 (12.5) MAX
.516 (13.1) MAX
.094 (2.4)
4
3
.063 (1.6)
Marking
.195 (4.95) MAX
.197 (5.0)
MAX
.256 (6.5)
.087 (2.2)
.142 (3.6)
1
2
SM55: .217 (5.5) MAX
SM45: .177 (4.5) MAX
SM40: .157 (4.0) MAX
Optional 2 Pad Pinout (SMP)
.094 (2.4)
.370 (9.4)
.055 (1.4)
.354 (9.0
± 0.1)
.063 (1.6)
CASE GND
CASE GND
4
1
.079 (2.0)
.256 (6.5)
.087 (2.2)
.142 (3.6)
.138 (3.5)
.079 (2.0)
Aug 2005
Pl tronics, Inc. (425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
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