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參數(shù)資料
| 型號(hào)： | SM55E-SR-FREQ5 |
| 廠商： | PLETRONICS INC |
| 元件分類： | 晶體 |
| 英文描述： | QUARTZ CRYSTAL RESONATOR, 25 MHz - 70 MHz |
| 封裝： | SMD, 4 PIN |
| 文件頁(yè)數(shù)： | 1/1頁(yè) |
| 文件大小： | 0K |
| 代理商： | SM55E-SR-FREQ5 |
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
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
Oscillation
Maximum
Frequency Range
Fundamental
AT Cut
3rd Overtone
AT Cut
Part Numbering Guide
Consult factory for available frequencies and specs.
Consult factory for lower ESR
°
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
37
Pl tronics, Inc.
Mechanical: inches (mm)
not to scale
Mode
(MHz)
ESR (Ohms)
Not all options available for all frequencies. A special part number may be assigned.
ESR Values
3.200 MHz – 70.000 MHz
Aug 2005
Solder Pads
Solder Pad Compatible with our SM39S and SMD Crystals from Epson, Meiden & Citizen
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.
.516 (13.1) MAX
.370 (9.4)
.197 (5.0)
MAX
.492 (12.5) MAX
.354 (9.0 ± 0.1)
.195 (4.95) MAX
SM55: .217 (5.5) MAX
SM45: .177 (4.5) MAX
SM40: .157 (4.0) MAX
CASE GND
.094 (2.4)
.142 (3.6)
.087 (2.2)
.256 (6.5)
.063 (1.6)
.079 (2.0)
.138 (3.5)
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 )
.055 (1.4)
Available in Standard 4 pad or Optional 2 pad Pinout Style
Standard Pinout (SM)
.094 (2.4)
.142 (3.6)
.087 (2.2)
.256 (6.5)
.063 (1.6)
Optional 2 Pad Pinout (SMP)
3.200 – 4.999
300
5.000 – 7.999
120
8.000 – 11.999
70
12.000 – 30.000
50
25.000 – 70.000
100
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 (Height/Pinout)
Frequency in MHz
Temperature Range
SM45 B E - xx - 70.0M - XXX (Internal Code or blank)
Load Capacitance
Parallel Resonance in pF (> 9 pF)
SR = Series Resonance
Blank: 0 to +70°C
E: - 40 to +85°C
Cal Tol / Freq Stability
Blank = 30/50
B = 30/30
SM55: 2 pad, SMP55: 4 pad (5.5mm)
SM45: 2 pad, SMP45: 4 pad (4.5mm)
SM40: 2 pad, SMP40: 4 pad (4.0mm)
Marking
12
4
1
4
3
PART STYLE MAY BE EITHER OF THE FOLLOWING:
Packaging
24mm tape
12mm pitch
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