Designing and manufacturing innovative frequency control devices since 1927
LOW PROFILE CRYSTALS
MS49
M
SMS49
Monitor Products’ MS49 and SMS49 crystals greatly reduce the space required by conven-
tional MM49 mounted crystals. Their low height allows them to be vertically mounted
between circuit boards and affords superior protection against shock and vibration. Our
resistance-welded packages offer excellent aging characteristics and may be used with all
types of wave soldering and vapor cleaning equipment.
MS49
SPECIFICATIONS
Frequency Range
Frequency Stability
Stability vs Temperature
Operating Temperature Range
Storage Temperature Range
Drive Level
Shunt Capacitance
Equivalent Series
Resistance
Freq Range (MHz):
✡
Max
(All fundamental unless
otherwise indicated)
3.5 ~ 60.0 MHz
!
30ppm @ 251C
!
50ppm from -201C to 701C
*
-201C to 701C standard
*
-551C to 1251C
1.0 mW max
7.0 pF
3.5 ~ 3.9
4.0 ~ 4.9
5.0 ~ 7.2
7.3 ~ 9.9
10.0 ~ 13.9
14.0 ~ 23.9
24.0 ~ 40.0
28.1 ~ 60.0
= 200
= 150
= 120
= 80
= 60
= 50
= 40
= 80 (3rd Overtone)
Units=mm
SMS49
* See Part Numbering Key for other options
APPLICATIONS
M
M
M
M
M
M
M
M
M
ATM
Networking
Computers
CD ROMs
DVDs
Cameras
Wireless RF
Disk & tape drives
Microprocessor controllers
FEATURES
Low profile
Fundamental to 45 MHz
Resistance welded
Optional surface mount
(SMS49 only)
M
MM49 (HC49U) compatible
M
Tape & reel available
(1000 pcs/reel)
M
M
M
M
Monitor Products has a proven track record as a pioneer manufacturer in the frequency control market. If our extensive
selection of standard and engineered crystals and oscillators does not meet your spec, we will work with you towards a
customized solution.
Monitor Products Company Inc reserves the right to make changes to its products and product specifications without notice. No liability is assumed as a result of their use or application.
12-13-01
502 VIA DEL MONTE, OCEANSIDE, CA 92054
TEL:
760.433.4510
FAX:
760.434.0255
MS49
M
SMS49
ENVIRONMENTAL PERFORMANCE SPECIFICATIONS
Operating Temp Range
Storage Temp Range
Vibration
Shock
Humidity
Hermetic Seal
Solderability
Packaging
-201C to 701C Standard
-551C to 1251C
MIL-STD-202F Method 204, 35G, 50 to 2000 Hz
MIL-STD-202F Method 213B Test Cond E, 1000G, 1/2 Sine Wave
85% RH, 851C, 48 Hours
Leak Rate 2 x 10
-8
ATM-cm
3
/sec max
MIL-STD-202F Method 208E
MS49
= Tape (22.5mm) & Reel (1000pcs/reel) or Bulk (<1000pcs)
SMS49
= Tape (24.0mm) & Reel (1000pcs/reel) or Bulk (<1000pcs)
MS49
TAPE DIMENSIONS (1000pcs/reel standard)
SMS49
Units=mm
CRYSTAL CORRELATION THEORY
Series Resonance:
At series resonance, the crystal looks
resistive in the circuit, and correlation of
frequency is not a problem. It must be
specified if unit is to be manufactured at
series or at a particular load capacitance.
Anti-Resonance Parallel:
Crystals operating at anti-resonance will look inductive
in the circuit. Changes of reactive values in the circuit
will change the crystal frequency. If the crystal is to be
used at anti-resonance, the load capacitance should
always be specified. The load capacitance CL is the
dynamic capacitance of the total circuit as measured across the crystal terminals.
PART
NUMBERING
KEY
SERIES
MS49
(Thru-Hole)
CORRELATION
L =
M=
N=
O=
Q=
S=
12 pF
15 pF
20 pF*
32 pF
24 pF
Series
Resonant
X = Cust spec
MODE
1 = Fundamental
3 = 3rd Overtone
FREQUENCY
STABILITY
A=
B=
C=
D=
E=
X=
1000 ppm
100 ppm
50 ppm*
30 ppm
25 ppm
Cust spec
TEMP RANGE
0=
1=
2=
3=
4=
5=
7=
9=
@ 251C
-101C~601C
01C~701C
-201C~701C*
-401C~701
-401C~851
-101C~701
Cust spec
HEIGHT
MS49
H35 = 3.5 mm*
SMS49
H25 = 2.5 mm
H30 = 3.0 mm
H32 = 3.2 mm
H40 = 4.0 mm
H45 = 4.5 mm*
PACKAGING
A = 2 lead
E = Tape & Reel
(1000pcs/reel)
FREQUENCY
SMS49
Sample Part
Part Numbers
(SMD)
K = Insulating
Spacer
(MS49 only)
X = Cust spec
MS49N1C3H35A
=
@ 14.318MHz
SMS49S1C3H45E
=
@ 12.0MHz
* Standard
MS49
SMS49
N
S
1
1
C
C
3
3
H35
H45
A
E
14.318
24.0
Call factory for additional options. Use full descriptive part number when ordering. Parts will be marked with series and frequency only.
Monitor Products Company Inc reserves the right to make changes to its products and product specifications without notice. No liability is assumed as a result of their use or application.
有多种 3D 传感器方案来实现深度感知系统，包括立体视觉相机、激光雷达和TOF(飞行时间)相机。每个选择都有其优缺点，其中，嵌入式深度感知立体系统成本低，坚固耐用，适合户外使用，并且能够提供高分辨率的彩色点云。 目前市场上有各种现成的立体感知系统。有时系统工程师需求根据精度、基线(两个相机间距)、视野和分辨率等因素，构建定制系统来满足特定的应用需求。 在本文中，我们首先介绍了立体视...[详细]
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