QC3CA25.0000F18B23M

**QC3CA Series** 2.5x3.2 4-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 Specifi cations Frequency Range 12.000 to 48.000MHz (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 (M  ) 500 at 100Vdc ±15Vdc 

|Equivalent Series Resistance(ESR)|Equivalent Series Resistance(ESR)|Equivalent Series Resistance(ESR)|
|---|---|---|
|Frequency Range - MHz|max.|Mode of Operation|
|12.000 to 16.000|120|Fundamental|
|16.000 to 25.000|60|Fundamental|
|25.000 to 30.000|50|Fundamental|
|30.000 to 48.000|35|Fundamental|



Frequency Stability vs. Temperature Operating Temperature ±20ppm ±30ppm ±50ppm -20 to +70°C    -40 to +85°C     standard  available 

## Mechanical Dimensions 

## Part Numbering Guide 

|Part Numbering Guideg GuideGuide|Part Numbering Guideg GuideGuide|Part Numbering Guideg GuideGuide|Part Numbering Guideg GuideGuide|Part Numbering Guideg GuideGuide|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|C3CA = 2.5x3.2<br>=4-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: QC3CA12.0000F12B33R<br>bold letters = recommended standard specifi cation|||||||||



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

**QC3CA Series** 2.5x3.2 4-Pad SMD All Ceramic Crystal Unit 

## Tape and Reel Dimensions 

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## Marking Code Guide 

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Contains frequency, Qantek manufacturing code, production code (month and year) and load capacitance.<br>Month Codes Year Codes Load Capacitance Code in pF<br>January A July G 2010 0 2011 1 2012 2 pF PN Code pF PN Code<br>February B August H 2013 3 2014 4 2015 5 12 A 20 F<br>March C September I 18 B 22 G<br>April D October J 8 C 30 H<br>May E November K 10 D 32 I<br>June F December L 16 E S S<br>Example:     First Line: 12.000  (Frequency)     Second Line: QA1A  (Qantek - January - 2011 - 12 pF)<br>**----- End of picture text -----**<br>


## Solder Refl ow Profi le 

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Environmental Specifi cations<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 specifi cations 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