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参数资料
| 型号： | SM45-SR-70.0M |
| 厂商： | PLETRONICS INC |
| 元件分类： | 晶体 |
| 英文描述： | QUARTZ CRYSTAL RESONATOR, 70 MHz |
| 封装： | SMD, 4 PIN |
| 文件页数： | 1/1页 |
| 文件大小： | 39K |
| 代理商： | SM45-SR-70.0M |
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 mW 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
(Height/Pinout)
Frequency in MHz
Temperature Range
SM45 E -- xx -- 70.0M
Consult factory for available frequencies and specs.
Blank: 0 to +70°C
E: - 40 to +85°C
19013 36th Ave. West Suite H Lynnwood, WA 98036, USA
Consult factory for lower ESR
°
Load Capacitance
(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
Parallel Resonance in pF ( 10 pF)
SR = Series Resonance
May 2002
SM55: 5.5mm/Std
SM45: 4.5mm/Std
SM40: 4.0mm/Std
SMP55: 5.5mm/2 pad
SMP45: 4.5mm/2 pad
SMP40: 4.0mm/2 pad
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
SM55: .217 (5.5) MAX
SM45: .177 (4.5) MAX
SM40: .157 (4.0) MAX
CASE GND
.09 (2.4)
.14 (3.6)
.09 (2.2)
.256 (6.5)
.06 (1.6)
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
Model
Standard Pinout (SM)
.09 (2.4)
.14 (3.6)
.09 (2.2)
.256 (6.5)
.06 (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
Packaging
24mm tape
12mm pitch
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