R26-32.768-12.5-EXT-5PPM

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## **TUNING FORK CRYSTAL** 

## **R26-32.768-12.5-EXT-5PPM** 

##  **ELECTRICAL SPECIFICATIONS** 

|**PARAMETER**|**VALUE**|
|---|---|
|NOMINAL FREQUENCY|32.768 kHz|
|FREQUENCY TOLERANCE AT 25°C, Max|±5 PPM|
|TURNOVER TEMPERATURE|25°C ± 5°C|
|PARABOLIC CURVATURE CONSTANT|-0.034 PPM/Δ°C2|
|LOAD CAPACITANCE|12.5pF|
|EQUIVALENT SERIES RESISTANCE, Max|35k Ω|
|DRIVE LEVEL, Max|1.0µW|
|MOTIONAL CAPACITANCE, Typical|0.003pF|
|SHUNT CAPACITANCE,Typical|1.35pF|
|CAPACITANCE RATIO|450|
|AGING(FIRST YEAR)|±3 PPM|
|QUALITY FACTOR, Typical|70000|
|INSULATION RESISTANCE,minimum|500M Ω|
|OPERATING TEMPERATURE RANGE|-40°C to +85°C|
|STORAGE TEMPERATURE RANGE|-40°C to +85°C|
|SHOCK  RESISTANCE|±5ppm max 75 cm drop test in 3 axes onto a<br>hard surface or 3000gx0.3msx1/2 sinewave in<br>3 axes|



Photo is not actual part 

##  **MECHANICAL SPECIFICATIONS** 

NOTE: Solder by terminals only max 245°C for ten seconds 

RALTRON ELECTRONICS  10400 N.W . 33[r d  ] STREET  Miami, Florida 33172  U.S.A. Telephone: +1-305-593-6033   Fax: +1-305-594-3973    e-mail: sales@raltron.com    web site: http://www.raltron.com 

**TUNING FORK CRYSTAL** 

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## **R26-32.768-12.5-EXT-5PPM** 

##  **REFLOW PROFILE** 

|**REFLOW PROFILE**|**REFLOW PROFILE**|**REFLOW PROFILE**|**REFLOW PROFILE**|**REFLOW PROFILE**|**REFLOW PROFILE**|
|---|---|---|---|---|---|
|**Temp.**<br>**[°C]**<br>**TP**<br>**TL**<br>**TSMAX**<br>**TSMIN**<br>**Ramp-up**<br>**Ramp-down**<br>**Critical Zone**<br>**TL to TP**<br>**tS Preheat**<br>**tL**<br>**tP**<br>—£*||||||
|**t[25°C] to Peak**|**t[25°C] to Peak**|||**Time [s]**||
|||**Reflow profile**||||
|TemperatureMin Preheat||TSMIN|||150°C|
|TemperatureMax Preheat||TSMAX|||200°C|
|Time (TSMINtoTSMAX)||tS|||60-180 sec.|
|Temperature||TL|||217°C|
|Peak Temperature||TP|||260°C|
|Ramp-uprate||RUP|||3°C/smax.|
|Ramp-down rate||RDOWN|||6°C/smax.|
|Timewithin5°C of Peak Temperature||tP|||10 s|
|Time t[25°C] toPeak Temperature||t[25°C] toPeak|||480 s|
|Time||tL|||60-150 s|



##  **ENVIRONMENTAL** 

|**PARAMETER**|**VALUE **|
|---|---|
|MOISTURE SENSITIVITY LEVEL|1|
|RoHS-2|5/6 COMPLIANT, EXEMPTION 7a|
|REACHSVHC|COMPLIANT|
|HALOGEN-FREE|COMPLIANT|
|ESD CLASSIFICATION LEVEL|N/A|
|TERMINATION FINISH|Sn|



RALTRON ELECTRONICS  10400 N.W . 33[r d  ] STREET  Miami, Florida 33172  U.S.A. Telephone: +1-305-593-6033   Fax: +1-305-594-3973    e-mail: sales@raltron.com    web site: http://www.raltron.com 

**TUNING FORK CRYSTAL** 

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## **R26-32.768-12.5-EXT-5PPM** 

##  **MARKING** 

x3FmyR 

x – Internal Production ID code m – Month code y – Year code 

|**YEARCODE**|**YEARCODE**|
|---|---|
|**Year**|**Code**|
|2011|1|
|2012|2|
|2013|3|
|2014|4|
|2015|5|
|2016|6|
|2017|7|
|2018|8|
|2019|9|



|MONTHCODE|MONTHCODE|MONTHCODE|
|---|---|---|
|MONTH||CODE|
|JANUARY<br>A|||
|FEBRUARY<br>B|||
|MARCH<br>C|||
|APRIL<br>D|||
|MAY|E||
|JUNE<br>F|||
|JULY|G||
|AUGUST<br>H|||
|SEPTEMBER<br>J|||
|OCTOBER<br>K|||
|NOVEMBER<br>L|||
|DECEMBER<br>M|||



##  **APPROVAL** 

|DRAWN BY:|KJackson, June20,2016|
|---|---|
|APPROVED BY:|KJackson, June 20, 2016|
|REVISION:|A,RevisedFormat|



RALTRON ELECTRONICS  10400 N.W . 33[r d  ] STREET  Miami, Florida 33172  U.S.A. Telephone: +1-305-593-6033   Fax: +1-305-594-3973    e-mail: sales@raltron.com    web site: http://www.raltron.com