Document Number: 35042 For technical questions, contact: frequency@vishay.com www.vishay.com
Revision: 18-Oct-07 1
Low Profile Holder Type Crystal Units
XT49SL
Vishay Dale
This part is a miniature AT cut strip crystal unit with a low
profile package. It is with resistance weld.
FEATURES
•Low cost
• Industry standard
• Wide frequency range
• Excellent aging
• Compliant to RoHS directive 2002/95/EC
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER SYMBOL CONDITION UNIT MIN. TYP. MAX.
Frequency range FOMHz 3.200 - 66.000
Frequency tolerance ΔF/FOat 25 °C ppm ± 10 ± 30 ± 50
Temperature stability TCref. to 25 °C ppm ± 10 ± 30 ± 50
Operating temperature range TOPR °C - 20 - + 70
Storage temperature range TSTG °C - 40 - + 85
Shunt capacitance C0pF - - 7
Load capacitance CLcustomer specified pF 10 - series
Insulation resistance IR100 VDC MΩ500 - -
Drive level DLμW - 100 500
Aging (first year) Fa at 25 °C, per year ppm - 5 - + 5
EQUIVALENT SERIES RESISTANCE (ESR) AND MODE OF VIBRATION (MODE)
FREQUENCY RANGE (MHz) MAX. ESR (Ω) MODE FREQUENCY RANGE (MHz) MAX. ESR (Ω)MODE
3.200 to 4.499 150 fundamental/AT 9.000 to 9.999 60 fundamental/AT
4.500 to 5.999 120 fundamental/AT 10.000 to 12.999 50 fundamental/AT
6.000 to 6.999 100 fundamental/AT 13.000 to 29.999 40 fundamental/AT
7.000 to 7.999 90 fundamental/AT 30.000 to 66.000 80 3rd overtone
8.000 to 8.999 80 fundamental/AT
DIMENSIONS in inches [millimeters]
0.435 [11.0] max.
0.183 [4.65]
max.
0.403 [10.24] max.
0.192 ± 0.008
[4.88 ± 0.2]
0.500 [12.7]
min.
0.146 [3.70] max.
Ø 0.017 ± 0.002
[0.43 ± 0.05]
0.098 [2.5]
max.
www.vishay.com For technical questions, contact: frequency@vishay.com Document Number: 35042
2Revision: 18-Oct-07
XT49SL
Vishay Dale Low Profile Holder Type Crystal Units
ORDERING INFORMATION
XT49SL R -20 SP 12M e2
MODEL OTR
blank = standard
R = - 40 °C to + 85 °C
LOAD
blank = series
-16 = 16 pF
-20 = 20 pF standard
-30 = 30 pF
-32 = 32 pF
OPTIONS
blank = standard
SP = spacer
SL = sleeve
FREQUENCY/MHz JEDEC LEAD (Pb)-FREE
STANDARD
GLOBAL PART NUMBER
XT9SL 20 A NA 12M
MODEL LOAD PACKAGE
CODE
OPTION FREQUENCY
GLOBAL PART NUMBERING
XT9S 20 A NA 40M
MODEL NUMBER LOAD
CAPACITANCE
PACKAGE
CODE OPTIONS FREQUENCY
XT9U = XT49U
XT9S = XT49S
XT9SL = XT49SL
XT9M = XT49M
XT9ML = XT49ML
XTU1 = XTUM1
18 = 18 pF
20 = 20 pF
NL = series
to be specified by
customer
Tape and reel
G = RF5
(XT9U, XT9S,
XT9SL)
H = RF7
(XT9M, XT9ML)
Bulk
A = B04
(all models)
NA = no additional
options
RR = extended
temperature
of - 40 °C to + 85 °C
Contact factory for
all other options
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
XT26T T A 32K768
MODEL NUMBER
OPERATING
TEMPERATURE
(OTR)
PACKAGE
CODE FREQUENCY
XT26T = XT26T
XT38T = XT38T
T = - 10 °C to
+ 60 °C
Bulk
A = B04
(all models)
32K768 = 32.768 kHz
K is used as decimal place holder
in frequency
Example: XT26T 32.768K
XT57 20 A 40M
MODEL NUMBER LOAD CAPACITANCE PACKAGE
CODE FREQUENCY
XT57 = XT57C
XT46 = XT46C
XT36 = XT36C
18 = 18 pF
20 = 20 pF
NL = series
to be specified by
customer
Tape and reel
H = RF7
Bulk
A = B04
(all models)
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: 91000 www.vishay.com
Revision: 18-Jul-08 1
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Legal Disclaimer Notice
Vishay
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
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applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
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