EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE

Tel: +44 1460 230000 Fax: +44 1460 230001 email: info@euroquartz.co.uk web: www.euroquartz.co.uk

SURFACE-MOUNT CRYSTALS

Frequency Range:

1.0MHz to 200MHz

Oscillation Mode:

See table

Calibration Tolerance at 25ºC

SL-Cut (<1.3MHz):

from ±50ppm

AT-Cut (>1.3MHz):

from ±3ppm

Frequency stability over temp

SL-Cut (<1.3MHz):

from ±100ppm -10° to +60°C

AT-Cut (>1.3MHz):

from ±3ppm 0° to +50°C

See table for details

Shunt Capacitance (C0):

4pF typical, 7pF maximum

Load Capacitance (CL):

Series or from 8pF to 32pF

(Customer to specify CL)

Ageing:

±3ppm max 1st year,

±1ppm max per year after

Drive level:

1mW maximum

Holder:

Resistance-weld, hermetic seal

Holder Variants:

H49MJ or 49TMJ

(See outline drawing)

Supply format:

Bulk pack (standard)

or tape (Ammo-Pak)

·

Surface mount version of HC49

·

Available with close tolerances

·

Fully customisable for application requirements

·

Customised parts readily available

·

Industry-standard package

·

Low installed cost

49MJ CRYSTALS

Surface-mount HC49

DESCRIPTION

GENERAL SPECIFICATION

49MJ crystals are standard HC49 crystals with formed leads, fitted with a

clip to enable surface-mount PCB assembly. The crystal therefore offers

the ease of surface-mount assembly with the technical benefit of close-

tolerance crystal parameters achievable by the use of circular AT-Cut

crystal blanks in the HC49 crystal.

FEATURES

1.0 ~ 1.3

SL

5000

2.01~3.0

AT Fund.

400

3.01~3.2

AT Fund.

200

3.21~3.5

AT Fund.

150

3.51~3.9

AT Fund.

120

3.91~5.0

AT Fund.

100

5.01~7.0

AT Fund.

50

7.01~10.0

AT Fund.

35

10.0~30.0

AT Fund.

25

30.01~45.0

AT Fund.

20

24.0~100

AT 3rd OT

40

80.0~160

AT 5th OT

70

110~200

AT 7th OT

120

Frequency

(MHz)

Crystal Cut

Oscillation Mode

ESR (max)

(Ohms)

OSCILLATION MODE & ESR

OUTLINES AND DIMENSIONS

Operating

Temp. °C

Temperature Stability (ppm)

±3

FREQUENCY STABILITY OVER TEMPERATURE

±5

±7.5

±10

±15

±20

±30

0° to +50°

ü

ü

ü

ü

ü

ü

ü

-10° to +60°

ü

ü

ü

ü

ü

ü

ü

-20° to +70°

X

ü

ü

ü

ü

ü

ü

-30° to +80°

X

X

X

ü

ü

ü

ü

-40° to +90°

X

X

X

X

ü

ü

ü

-55° to +105°

X

X

X

X

X

ü

ü

PART NUMBER GENERATION

49MJ crystals part numbers are derived as follows:

Example:

16.000MHz 49MJ/10/20/10/30pF/ATF

Frequency

Package - 49MJ

- 49TMJ

Calibration Tolerance at 25°C

(in ±ppm)

Temperature Stability

(in ±ppm)

Operating Temperature Range

(lower figure of

temperature range)

Circuit Condition

(CL in pF or SERIES)

Mode

- SLF (SL-Cut, fund.)

- ATF (AT-Cut, fund.)

- AT3 (AT-Cut, 3rd overtone)

- AT5 (AT-Cut, 5th overtone)

- AT7 (AT-Cut, 7th overtone)