Document Number: 35014

For technical questions contact: frequency@vishay.com

www.vishay.com

Revision: 25-Aug-05

11

Low Profile Holder Type Crystal Units

XT49S

Vishay Dale

FEATURES

• Low cost

• Industry standard

• Wide frequency range

• Excellent aging

• 100 % Lead (Pb)-free and RoHS compliant

This part is a miniature AT cut strip crystal unit with a low

profile package. It is with resistance weld.

STANDARD ELECTRICAL SPECIFICATIONS

PARAMETER

SYMBOL

CONDITION

UNIT

MIN

TYPICAL

MAX

Frequency Range

MHz

3.200

66.000

Frequency Tolerance

∆F/F

O

at 25 °C

ppm

±10

±30

±50

Temperature Stability

TC

ref to 25 °C

ppm

±10

±30

±50

Operating Temperature Range

°C

-20

+70

Storing Temperature Range

°C

-40

+85

Shunt Capacitance

pF

7

Load Capacitance

CL

Customer Specified

pF

10

Series

Insulator Resistance

IR

M

Ω

500

Drive Level

DL

µW

100

500

Aging (first year)

Fa

at 25 °C, per year

ppm

-5.0

+5.0

DIMENSIONS in inches [millimeters]

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 30.000

40

Fundamental/AT

7.000 to 7.999

90

Fundamental/AT

30.000 to 66.000

80

8.000 to 8.999

80

Fundamental/AT

ORDERING INFORMATION

XT49S

MODEL

R

OTR

Blank = Standard

R = -40 °C to +85 °C

-20

LOAD

Blank = Series

-16 = 16 pF

-20 = 20 pF Standard

-30 = 30 pF

-32 = 32 pF

SP

OPTIONS

Blank = Standard

SP = Spacer

SL = Sleeve

12 M

FREQUENCY/MHz

e2

JEDEC Lead (Pb)-

Free

STANDARD

GLOBAL PART NUMBER

MODEL

LOAD

PACKAGE

OPTIONS

FREQUENCY

CODE

X

T

9

X

X

S

2

0

A

N

A

0.403 [10.24] Max

0.192 0.008 [4.88

± 0.2]

0.435 [11.0] Max

0.183

[4.65] Max

0.500

[12.7] Min

0.146 [3.70] Max

Ø 0.017

± 0.002 [0.43 ± 0.05]

0.138

[3.5] Max

1

2

M

RoHS