Tel :
Fax :
email :
0044 (0)118 979 1238
0044 (0)118 979 1283
info@actcrystals.com
ACT2018SMX-4
The
ACT2018SMX-4
is an extremely compact, high quality, low aging, seam welded crystal. Utilising a
ceramic base with a metal lid, it provides for the durability and reliability, necessary for strenuous
processes like infrared and vapour reflow. The lid is grounded through the package, to assist with EMC
Issues, and the pads are gold plated. The device is very suitable for automatic placement on PCB's.
With an excellent range of frequencies it is an optimum choice for designs where PCB space is at a
premium.
Applications
include: PDA, Cellular, MPU Clocks, ISM, Bluetooth, WLan, and consummer
electronics. Available loose or on reels (Standard 3,000 pieces / reel.).
Specification
Parameter
Frequency Range
Frequency Tolerance
Stability over Temp Range
Temp Operating Range
Temp Storage Range
Equivalent Series Resistance
Load Capacitance
Shunt Capacitance
Drive Level
FDLD
DLD2
Insulation Resistance
Reflow Process
Aging
Symbol
fo
f/fo
Tc
Topr
Tstg
ESR
CL
C0
DL
Specification
24.00 ~ 48.00 MHz
AT Fundamental
±10ppm (standard) and ±30ppm (25°C±2degC)
±10ppm (standard), ±20ppm and ±30ppm
-20 ~ +70°C Standard
Others available (enquire)
-40 ~ +85°C
Please refer to Table 1
8 pF min
5pF max
100W max
10ppm max
Refer to table 1
500Mmin
20 Seconds @ 270°C (max)
±2ppm / 1st year max (1ppm option*)
Table 1
Frequency(MHz)
16.0~17.999
18.0~19.999
20.0~24.999
25.0~31.999
32.0~48.0
ESR
max
150
120
80
70
40
Mode
Fundamental
Fundamental
Fundamental
Fundamental
Fundamental
Condition
Please specify
Please Specify
Please specify
Please specify
Please specify
6 steps minimum
6 steps minimum
IR
Fa
@100V DC
Refer to profile below
@25°C
DLD2
<15Ω
<12Ω
<10Ω
<10Ω
<10Ω
* Tolerance +aging 1st yr= Tolerance plus ±1ppm
Pad surface material Au
Please note that all parameters can not necessarily be specified in the same device
Customer to specify : Frequency, Frequency Tolerance, Temperature Stability, Operating Temperature & Load Capacitance
In line with our ongoing policy of product evolvement and improvement, the above specification may be subject to change without notice
ISO9001:2000 Registered
For quotations or further information please contact us at:
3 The Business Centre, Molly Millars Lane, Wokingham, Berkshire, RG41 2EY, UK
http://www.actcrystals.com
1 of 2
Issue 4 YC1F
Date:13-9-2012
ACT [ ADVANCED CRYSTAL TECHNOLOGY ]
