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XT26T
Vishay Dale
Tuning Fork Crystal
FEATURES
* Miniature package
* Low cost * KHz frequency * Tight tolerance The tuning fork type quartz crystal provides ultimate in size, performance and economic trade-offs. So it is used as a clock source in communication equipment, measuring instrument, microprocessor and other time management applications. * 100 % Lead (Pb)-free and RoHS compliant
RoHS
COMPLIANT
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER Frequency Range Frequency Tolerance Frequency Coefficient Operating Temperature Range Storing Temperature Range Shunt Capacitance Motional Capacitance Load Capacitance Insulation Resistance Drive Level Aging (first year) Equivalent Series Resistance(ESR) SYMBOL FO F/FO K TOPR TSTG CO C1 CL IR DL Fa Rs CONDITION at 25 C ref to 25 C UNIT KHz ppm ppm/(C)2 C C pF fF pF M W ppm K MIN TYPICAL 32.768 20 - 10 - 20 1 500 - 5.0 1 + 5.0 50 0.85 2 12.5 - 0.042 + 60 + 70 2 4 MAX
100 VDC at 25 C 3 C
DIMENSIONS in inches [millimeters]
0.248 [6.3] Max 0.083 [2.1] Max 0.158 [4.0] Min 0.028 [0.7] 0.008 [0.20]
PARABOLIC TEMPERATURE CURVE
TEMPERATURE (C)
- 20 - 10 0 10 20 30 40 50 60 70
- 10
- 20
- 30
- 40
- 50
ORDERING INFORMATION
XT26T MODEL 32.768 kHz FREQUENCY/kHz e2 JEDEC LEAD (Pb)-FREE STANDARD
- 60
F/f (ppm)
To determine frequency stability, use parabolic curvature (k). For example: What is stability at 45 C? 1) Change in Temperature (C) = 45 - 25 = 20 C 2) Change in Frequency = - 0.042 ppm*(C) = - 0.042 ppm*(20)2 = - 16.8 ppm (max)
GLOBAL PART NUMBER
X T 2 6 T T OPERATING TEMPERATURE A PACKAGE CODE 3 2 K 7 6 8
MODEL
FREQUENCY
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For technical questions contact: frequency@vishay.com
Document Number: 35017 Revision: 18-Oct-07
XT26T
Tuning Fork Crystal
Vishay Dale
GLOBAL PART NUMBERING
X T 9 S 2 0 A N A 4 0 M
MODEL NUMBER XT9U = XT49U XT9S = XT49S XT9SL = XT49SL XT9M = XT49M XT9ML = XT49ML XTU1 = XTUM1
LOAD CAPACITANCE 18 = 18 pF 20 = 20 pF NL = Series to be specified by customer
PACKAGE CODE TAPE AND REEL G = RF5 (XT9U, XT9S, XT9SL) H = RF7 (XT9M, XT9ML) BULK A = B04 (all models)
OPTIONS NA = No Additional Options RR = Extended Temperature of - 40 C to + 85 C Contact factory for all other options
FREQUENCY 4M = 4 MHz 40M = 40 MHz 100M = 100 MHz 12M288 = 12.288 MHz M is used as decimal place holder in frequency
Example: XT49S-20 40M
X
T
2
6
T
T
A
3
2
K
7
6
8
MODEL NUMBER XT26T = XT26T XT38T = XT38T Example: XT26T 32.768K
OPERATING TEMPERATURE (OTR) T = - 10 C to + 60 C
PACKAGE CODE BULK A = B04 (all models)
FREQUENCY 32K768 = 32.768 kHz K is used as decimal place holder in frequency
X
T
5
7
2
0
A
4
0
M
MODEL NUMBER XT57 = XT57C XT46 = XT46C XT36 = XT36C
LOAD CAPACITANCE 18 = 18 pF 20 = 20 pF NL = Series to be specified by customer
PACKAGE CODE TAPE AND REEL H = RF7 BULK A = B04 (all models)
FREQUENCY 4M = 4 MHz 40M = 40 MHz 100M = 100 MHz 12M288 = 12.288 MHz M is used as decimal place holder in frequency
Example: XT57C-20 40M
Document Number: 35017 Revision: 18-Oct-07
For technical questions contact: frequency@vishay.com
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Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, "Vishay"), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000 Revision: 18-Jul-08
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