R38-32.768-12.5

**TUNING FORK CRYSTAL** 

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**R38-32.768-12.5** 

## • **ELECTRICAL SPECIFICATIONS** 

|**PARAMETER**|**VALUE**|
|---|---|
|NOMINAL FREQUENCY|32.768 kHz|
|FREQUENCY TOLERANCE AT 25°C|±20ppm max|
|TURNOVER TEMPERATURE|25°C ± 5°C|
|PARABOLIC CURVATURE CONSTANT|-0.034ppm/Δ°C2|
|LOAD CAPACITANCE|12.5pF|
|EQUIVALENT SERIES RESISTANCE|35 kΩ max|
|DRIVE LEVEL|1.0µW typ|
|MOTIONAL CAPACITANCE|0.0035pF typ|
|SHUNT CAPACITANCE|1.6pFtyp|
|CAPACITANCE RATIO|460 typ|
|AGING|±3ppm firstyear max|
|QUALITY FACTOR TYP|90000 typ|
|INSULATION RESISTANCE|500 MΩ min|
|OPERATING TEMPERATURE RANGE|-20°C to +70°C|
|STORAGE TEMPERATURE RANGE|-40°C to +85°C|
|SHOCK  RESISTANCE|±5 ppm max 75 cm drop test in<br>onto a hard wood surface|



## • **MECHANICAL SPECIFICATION** 

NOTE: Through hole device, can withstand 245°C soldering by terminals only 

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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**R38-32.768-12.5** 

## • **WAVE SOLDER PROFILE** 

|**Wave Solderprofile**|**Wave Solderprofile**|**Wave Solderprofile**|
|---|---|---|
|**Profile Feature**|**SnPb eutectic**|**Pb-Free**|
|Average ramp-uprate|~200°C/second|~200°C/second|
|Heating Rate during preheat|typical 1-2°/second<br>max 4°/second|typical 1-2°/second<br>max 4°/second|
|Final preheat temperature, TS|~130°C|~130°C|
|Peak temperature, TP|235°C|260°C|
|Time within +0°C / -5°C of actual temperature, tP|10 seconds|10 seconds|
|Ramp-down rate|5°C/second max.|5°C/second max.|



NOTE: This document should serve as recommendation only. Other parameters may also affect soldering, this profile does not guarantee absolute success.  Soldering profile should be determined by the equipment manufacturer and customers’ process engineer. 

## • **ENVIRONMENTAL** 

**PARAMETER VALUE** MOISTURE SENSITIVITY LEVEL 1 RoHS Compliant REACH SVHC Compliant 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 

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## **TUNING FORK CRYSTAL** 

## **R38-32.768-12.5** 

## • **APPROVAL** 

|DRAWN BY:|CP, June 04,2015|
|---|---|
|APPROVED BY:|CP, June 04, 2015|
|REVISION:|A,Initial Release|
||B Updated to current spec<br>levels JH 8/20/19<br>C. Updated to current spec<br>level AG 3/19/2020|



Raltron Electronics / RAMI Technology USA, LLC, including its affiliates, employees, agents and other persons acting on  its behalf (collectively Raltron/RAMI Tech), disclaim any and all liability for any errors or inaccuracies contained in this data sheet.  While Raltron/RAMI Tech has made every reasonable effort ensure the accuracy of all product information, specifications and data contained herein, Raltron/RAMI Tech does not guarantee that the information is accurate, reliable or current.   The product information is provided only for reference purposes only and is subject to change, correction or revision, at any time without notice.  Raltron/RAMI Tech does not assume any liability arising out of an application or use of any product described herein and disclaims any warranties expressed or implied.  The user of products in such applications shall assume all risks of such use and will agree to hold Raltron/RAMI Tech, harmless against all damages. 

Copyright © 2016, Raltron Electronics / RAMI Technology USA, LLC.  All rights reserved. No part of this document may be reproduced in any form without the prior written permission of Raltron Electronics / RAMI Technology USA, LLC. 

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