Document Number: 35042

For technical questions contact: frequency@vishay.com

www.vishay.com

Revision: 18-Oct-07

2

XT49SL

Low Profile Holder Type Crystal Units

Vishay Dale

GLOBAL PART NUMBERING

XT

9

S

2

0

A

N

A

4

0

M

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

X

T

2

6

T

T

A

3

2

K

768

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

XT

5

7

2

0

A

4

0

M

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