QC7CB27.0000F12B23M

**QC7CB Series** 5x7 2-Pad SMD All Ceramic Crystal Unit 

## **Features** 

- All ceramic epoxy sealed SMD package 

- Low in height, suitable for thin equipment 

## **Applications** 

   - High density applications 

   - Modem, communication and test equipment 

- Tight tolerance and stability available 

|General Specifications|General Specifications|
|---|---|
|Frequency Range|6.000 to 30.000MHz (Fundamental)|
|Frenquency Tolerance at 25°C|±20 to ±50ppm (±30ppm standard)|
|Frequency Stability over Temperature Range|See Stability vs. Temperature Table|
|Storage Temperature|-55 to +125°C|
|Aging per Year|±5ppm max.|
|Load Capacitance CL|10 to 32pF and Series Resonance|
|Shunt Capacitance C0|7.0pF max.|
|Equivalent Series Resistance (ESR)|See ESR Table|
|Drive Level|100μW typ. (500μW max)|
|Insulation Resistance (MΩ)|500 at 100Vdc ±15Vdc|



|Equivalent Series Resistance(ESR)|Equivalent Series Resistance(ESR)|Equivalent Series Resistance(ESR)|
|---|---|---|
|Frequency Range - MHz<br>Ω|Ωmax.|Mode of Operation|
|6.000 to 8.000|80|Fundamental|
|8.000 to 30.000|60|Fundamental|



|FrequencyStabilityvs. Temperature|FrequencyStabilityvs. Temperature|FrequencyStabilityvs. Temperature|FrequencyStabilityvs. Temperature|
|---|---|---|---|
|Operating Temperature|±20ppm|±30ppm|±50ppm|
|-20 to +70°C||||
|-40 to +85°C||||
|standard<br>available||||



## Mechanical Dimensions 

## Part Numbering Guide 

|Part Numbering Guideg GuideGuide|Part Numbering Guideg GuideGuide|Part Numbering Guideg GuideGuide|Part Numbering Guideg GuideGuide|||||||
|---|---|---|---|---|---|---|---|---|---|
|Qantek<br>Code|Package|Nominal Frequency<br>(in MHz)|Vibration<br>Mode|Load Capacitance||Operating Temperature<br>Range|Frequency<br>Tolerance|Frequency<br>Stability|Packaging|
|Q = Qantek|C7CB = 5x7 2-Pad SMD|7 digits including the<br>decimal point<br>(f.ie. 12.0000)|F = AT-Fund|S = Series<br>**12 = 12pF**<br>18 = 18pF<br>20 = 20pF   etc.||A = -20 to +70°C<br>**B** **= -40 to +85°C**|2 = ±20ppm<br>**3 = ±30ppm**<br>5 = ±50ppm|2 = ±20ppm<br>**3 = ±30ppm**<br>5 = ±50ppm|M = 250pcs Tape&Reel<br>R = 1000pcs Tape&Reel|
|Example: QC7CB12.0000F12B33R<br>bold letters = recommended standard specification||||||||||



**QANTEK Technology Corporation** Phone: +1 877-227-0440 (tollfree) www.qantek.com Fax: +1 877-227-0440 (tollfree) info@qantek.com 

**QC7CB Series** 5x7 2-Pad SMD All Ceramic Crystal Unit 

## Tape and Reel Dimensions 

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## Marking Code Guide 

|Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.|Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.|Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.|Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.|Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.|Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.|Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.|Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.|Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.|Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.|Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.|Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.|Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|||||||||||||||||||||
||Month Codes||||||Year|Codes|||||||Load Capacitance Code inpF|||||
||January|A|July|G|||2010|0|2011|1|2012|2|||pF|PN Code|pF|PN Code||
||February|B|August|H|||2013|3|2014|4|2015|5|||12|A|20|F||
||March|C|September|I|||||||||||18|B|22|G||
||April|D|October|J|||||||||||8|C|30|H||
||May|E|November|K|||||||||||10|D|32|I||
||June|F|December|L|||||||||||16|E|S|S||
|||||||||||||||||||||
|_Example:_First Line: 12.000_(Frequency)_Second Line: QA1A_(Qantek - January - 2011 - 12 pF)_||||||||||||||||||||



## Solder Reflow Profile 

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**----- Start of picture text -----**<br>
Environmental Specifications<br>Mechanical Shock MIL-STD-202, Method 213, C<br>Vibration MIL-STD-202, Method 201 & 204<br>Thermal Cycle MIL-STD, Method 1010, B<br>Gross Leak MIL-STD-202, Method 112<br>Fine Leak MIL-STD-202, Method 112<br>**----- End of picture text -----**<br>


All specifications are subject to change without notice. 

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## **QANTEK Technology Corporation** 

Phone: +1 877-227-0440 (tollfree) www.qantek.com Fax: +1 877-227-0440 (tollfree) info@qantek.com