XT49M

www.vishay.com

Vishay Dale

Revision: 13-Jan-2020

1

Document Number: 35012

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

Low Profile SMD Type Crystal Units

Note

• Not compatible with vapor phase reflow mounting

This part is a miniature AT cut strip crystal unit packaged for

surface mounting.

FEATURES

•Low cost

• Industry standard

• Wide frequency range

• Excellent aging

• Surface-mount

• Material categorization: for definitions of compliance

STANDARD ELECTRICAL SPECIFICATIONS

PARAMETER

SYMBOL

CONDITION

UNIT

MIN.

TYP.

MAX.

Frequency range

MHz

3.579545

-

66.000

Frequency tolerance

At 25 °C

ppm

-30

-

+30

Temperature stability

Ref. to 25 °C

ppm

-50

-

+50

Operating temperature range

°C

-10

-

+70

Storage temperature range

°C

-55

-

+125

Shunt capacitance

pF

-

-

7

Load capacitance

Customer specified

pF

10

-

Series

Insulation resistance

M

Ω

500

-

-

Drive level

μW

-

100

500

Aging

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

3.579 to 3.999

200

Fundamental/AT

10.000 to 13.999

80

Fundamental/AT

4.000 to 4.999

150

Fundamental/AT

14.000 to 39.999

50

Fundamental/AT

5.000 to 5.999

120

Fundamental/AT

40.000 to 66.999

80

6.000 to 9.999

100

Fundamental/AT

DIMENSIONS in inches [millimeters]

0.403 [10.24] max.

0.150 [3.8]

max.

0.150 [3.8] max.

Solder Pattern

0.376 [9.55]

0.219 [5.55]

0.081

[2.05]

Insulation Base

Crystal Lead

0.185 ± 0.012

[4.7 ± 0.3]

0.484 ± 0.024

[12.3 ± 0.6]

0.437 + 0.020/- 0.031

[11.1 + 0.50/- 0.80]

0.201 ± 0.020

[5.1 ± 0.5]

0.031 ± 0.012

[0.8 ± 0.3]

Crystal Unit

0.008 [0.2]

max.

0.177 [4.5]

max.

0.012 [0.3]

max.