Document No. 008-0360-0 Page 1- 2 Rev. C
www.ctscorp.com
Model 445
Surface Mount Quartz Crystal
FEATURES
• Standard 5.0mm x 3.2mm Glass Seal Package
• Fundamental Crystal Design
• Frequency Range 10 – 50 MHz
• Frequency Tolerance, ±20 ppm Standard [other tolerances available]
• Frequency Stability, ±30 ppm Standard [other stabilities available]
• Operating Temperature to -40°C to +85°C
• Tape & Reel Packaging Standard, EIA-481
• RoHS Compliant in Accordance with EU Directive 2011/65/EU
- Lead-Free Termination Finish
- Exemption 7(c) -I, Electrical and electronic compo nents containing lead [Pb] in glass
APPLICATIONS
Model 445 is a low cost device used in a wide range of commercial applications including
notebooks, computer peripherals, audio visu al, Bluetooth and USB interfaces, PDAs, and automotive electronics.
ORDERING INFORMATION
445 M
OPERATIN G TEM P ER A T U R E R A N G E FREQUEN C Y IN M Hz
W = 0°C to +50°C
A = -10°C to +60°C
C = -20°C to +70°C [standard]
I = -40°C to +85°C [standard]
M - indicates MHz and decimal point. 3
LOAD CAPACITANCE
A = 10 pF
B = 13 pF
C = 16 pF
D = 18 pF
E = 20 pF
F = 24 pF
G = 30 pF
H = 32 pF
J = 9 pF
K = 8 pF
L = 12 pF
S = Series
FREQUENCY TOLERANCE @ 25°C
2 = ± 20 ppm [standard]
3 = ± 30 ppm
Contact y ou r local CT S Represent at iv e or CTS Cust om e r Se rv ice for availability.
STABILITY OVER TEMP ERATUR E
1 = ± 10 ppm 1
X = ± 15 ppm 2
2 = ± 20 ppm
3 = ± 30 ppm [std]
5 = ± 50 ppm
3] Frequency is recorded with two leading digits before the ‘M’ and 5 significant digits after the ‘M’ (including zeros).
Not all performan ce combin at ion s and f r e qu e ncie s m ay be available.
2] Only available with temperature range codes "W", "A" and "C".
1] Only available with temperature range codes "W" and "A".
PACKAGING INFORM ATION [Reference]
Factory may package reels in quantities of 1k pcs. or 3k pcs. Reel size is 180mm.
Document No. 008-0360-0 Page 2 - 2 Rev. C
Model 445
Quartz Crystal
ELECTRICAL CHARACTERISTICS
PARAMETER
Fre
q
uenc
y
Ran
g
e
O
p
eratin
g
Mode
Cr
y
stal Cut
Fre
q
uenc
y
Tolerance @ +25°C
Fre
q
uenc
y
Stabilit
y
Tolerance
(Operating Temperature Range, Referenced to 25°C Reading) 0°C to +50°C -10°C to +60°C
-20°C to +70°C -40°C to +85°C
10 MH z - < 12 MHz 100 Ohms
12 MH z - < 16 MHz 50 Ohms
16 MH z - < 30 MHz 40 Ohms
30 MH z - < 50 MHz 30 Ohms
Load Ca
p
acitance or Resonance Mode
Shunt Capacitance (C0)
Drive Level
A
g
in
g
@ +25°C
Stora
g
e Tem
p
erature Ran
g
e
V
ALUE
Equivalent Series Resistance [Maximum]
See Ordering Information
5.0 pF Typical, 7.0 pF Maximum
Operating Temperature Ranges
ELECTRICAL PARAMETERS
10 MH z to 50 M Hz
Fundamental
AT-Cut
±20 ppm, ±30 ppm
±10 ppm, ±15 ppm,
±20 ppm, ±30 ppm, ±50 ppm
-40°C to +85°C
10 µW Min., 100 µW Typ., 300 µW M a x.
±3 ppm/yr Typical
MECHANICAL SPECIFICATIONS
PACKAGE DRAWING
M445
CDXXX
TABLE I – DATE CODE
2001 2005 2009 2013 2017 A B C D E F G H J K L M
2002 2006 2010 2014 2018 N P Q R S T U V W X Y Z
2003 2007 2011 2015 2019 a b c d e f g h j k l m
2004 2008 2012 2016 2020 n p q r s t u v w x y z
MONTH JAN FEB MAR DEC
YEAR AUG SEP OCT NOVAPR MAY JUN JUL
NOTES
1. Complete CTS part number, frequency value, date code
and manufacturing site code information must appear on
reel and carton labels.
2. Termination pads (e4); barrier plating is nickel [Ni] with
gold [Au] flash plate.
3. Reflow conditions per JEDEC J-STD-020; 260°C
maximum, 10 seconds.
4. MSL – 1.
MARKING INFORMATION
1. M445 - CTS Model Series.
2. C – CTS.
3. D – Date code. See Table I for codes.
4. XXX – Frequency code.
Reference CTS document 016-1454-01.
SUGGESTED SOLDER PAD GEOMETRY
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
CTS:
445A22A12M00000 445A22A14M31818 445A22A20M00000 445A22A22M00000 445A22A24M00000
445A22A24M57600 445A22A25M00000 445A22A27M00000 445A22A30M00000 445A22C12M00000
445A22C14M31818 445A22C20M00000 445A22C24M00000 445A22C24M57600 445A22C27M00000
445A22C30M00000 445A22D12M00000 445A22D14M31818 445A22D20M00000 445A22D24M00000
445A22D24M57600 445A22D25M00000 445A22D27M00000 445A22D30M00000 445A22E12M00000
445A22E14M31818 445A22E20M00000 445A22E24M00000 445A22E24M57600 445A22E25M00000
445A22E27M00000 445A22E30M00000 445A22K12M00000 445A22K14M31818 445A22K20M00000
445A22K24M00000 445A22K24M57600 445A22K25M00000 445A22K27M00000 445A22K30M00000
445A22L12M00000 445A22L14M31818 445A22L20M00000 445A22L24M00000 445A22L24M57600
445A22L25M00000 445A22L27M00000 445A22L30M00000 445A22S12M00000 445A22S14M31818
445A22S20M00000 445A22S24M00000 445A22S24M57600 445A22S25M00000 445A22S27M00000
445A22S30M00000 445A23A12M00000 445A23A14M31818 445A23A20M00000 445A23A23M00000
445A23A24M00000 445A23A24M57600 445A23A25M00000 445A23A27M00000 445A23A30M00000
445A23C12M00000 445A23C14M31818 445A23C20M00000 445A23C24M00000 445A23C24M57600
445A23C27M00000 445A23C30M00000 445A23D12M00000 445A23D14M31818 445A23D20M00000
445A23D24M00000 445A23D24M57600 445A23D25M00000 445A23D27M00000 445A23D30M00000
445A23E12M00000 445A23E14M31818 445A23E20M00000 445A23E24M00000 445A23E24M57600
445A23E25M00000 445A23E27M00000 445A23E30M00000 445A23K12M00000 445A23K14M31818
445A23K20M00000 445A23K24M00000 445A23K24M57600 445A23K25M00000 445A23K27M00000
445A23K30M00000 445A23L12M00000 445A23L14M31818 445A23L20M00000 445A23L24M00000
