QC7CB Series
End of Life
5x7 2-Pad SMD All Ceramic Crystal Unit
12/31/2016
Replaced by QC7B Series
Features
• All ceramic epoxy sealed SMD package
• Low in height, suitable for thin equipment
• Tight tolerance and stability available
Applications
• High density applications
• Modem, communication and test equipment
General Specifications
Frequency Range
Frequency Tolerance at 25°C
Frequency Stability over Temperature Range
Storage Temperature
Aging per Year
Load Capacitance C
L
Shunt Capacitance C
0
Equivalent Series Resistance (ESR)
Drive Level
Insulation Resistance (MΩ)
6.000 to 30.000MHz (Fundamental)
±20 to ±50ppm (±30ppm standard)
See Stability vs. Temperature Table
-55 to +125°C
10 to 32pF and Series Resonance
7.0pF max.
See ESR Table
±5ppm max.
Equivalent Series Resistance (ESR)
Frequency Range - MHz
6.000 to 8.000
8.000 to 30.000
Ω
max.
80
60
Mode of Operation
Fundamental
Fundamental
100μW typ. (500μW max)
500 at 100Vdc ±15Vdc
Frequency Stability vs. Temperature
Operating Temperature
-20 to +70°C
-40 to +85°C
O
Package
Nominal Frequency
(in MHz)
7 digits including the
decimal point
(f.ie. 12.0000)
Mechanical Dimensions
E
Part Numbering Guide
Qantek
Code
Q = Qantek
C7CB = 5x7 2-Pad SMD
Vibration
Mode
F = AT-Fund
Example: QC7CB12.0000F12B33R
L
±20ppm
±30ppm
±50ppm
standard
available
Load Capacitance
S = Series
12 = 12pF
18 = 18pF
20 = 20pF etc.
Operating Temperature
Range
A = -20 to +70°C
B = -40 to +85°C
Frequency
Tolerance
2 = ±20ppm
3 = ±30ppm
5 = ±50ppm
Frequency
Stability
2 = ±20ppm
3 = ±30ppm
5 = ±50ppm
Packaging
M = 250pcs Tape&Reel
R = 1000pcs Tape&Reel
bold letters = recommended standard specification
QANTEK Technology Corporation
Phone: +1 877-227-0440 (tollfree)
Fax:
+1 877-227-0440 (tollfree)
www.qantek.com
info@qantek.com
QC7CB Rev. 0.4
QC7CB Series
End of Life
5x7 2-Pad SMD All Ceramic Crystal Unit
12/31/2016
Replaced by QC7B Series
Tape and Reel Dimensions
Marking Code Guide
Month Codes
January
February
March
April
May
June
A
B
C
D
E
F
July
August
October
November
December
G
H
J
K
L
Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.
Year Codes
2010
2013
0
3
L
Load Capacitance Code in pF
pF
PN Code
A
B
C
E
pF
12
18
8
10
16
20
22
30
32
S
2011
2014
1
4
2012
2015
2
5
D
PN Code
F
G
H
I
S
September I
Example:
First Line: 12.000
(Frequency)
Second Line: QA1A
(Qantek - January - 2011 - 12 pF)
Solder Reflow Profile
O
Vibration
Gross Leak
Fine Leak
Environmental Specifications
Mechanical Shock
Thermal Cycle
MIL-STD-202, Method 213, C
MIL-STD-202, Method 201 & 204
MIL-STD, Method 1010, B
MIL-STD-202, Method 112
MIL-STD-202, Method 112
E
All specifications are subject to change without notice.
QANTEK Technology Corporation
Phone: +1 877-227-0440 (tollfree)
Fax:
+1 877-227-0440 (tollfree)
www.qantek.com
info@qantek.com
QC7CB Rev. 0.4
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