EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE

Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 Email: info@euroquartz.co.uk www.euroquartz.co.uk

CRYSTALS

10.7mm x 4.7mm x 2.0mm SMD

DESCRIPTION

The MS2 crystal provides an ideal source of low frequency clock

signals (under 10MHz) in a low-profile SMD package height of

2.0mm. The crystal features a glass to metal substrate and resistance-

welded metal lid offering enhanced hermetic properties. Premium

grade AT-strip crystal plate is mounted at both ends for high shock

and low g sensitivity.

·

Low height SMD package for low frequencies

·

Frequency range 3.2MHz to 70.0MHZ

·

Fully RoHS compliant

·

Standard EIA tape and reel

OUTLINE & DIMENSIONS

Frequency Range

AT-Cut Fundamental:

3.2MHz to 30.0MHz

AT-Cut 3rd Overtone:

27.0MHz to 70.0MHz

BT-Cut Fundamental:

24.0MHz to 48.0MHz

Calibration Tolerance at 25ºC*:

from ±10ppm at 25°C

(±30ppm standard)

Frequency stability

AT-Cut:

±30ppm over-10° to +60°C

BT-Cut:

±100ppm over -10° to +60°C

Storage Temperature:

-40°~+85°C

Equivalent Series Resistance:

See table

Shunt Capacitance (C0):

7pF maximum

Load Capacitance (CL):

Series or from 10pF to 32pF

(Customer specified CL)

Ageing:

<±5ppm per year at +25°C

Drive level:

0.5mW maximum

Reflow Soldering:

10s maximum at 260°C twice

or 180s at 230°C, once.

Packaging:

24mm EIA tape and reel, 1k per.

SPECIFICATION

3.2~3.4

300

3.5~4.0

150

4.1~4.9

120

5.0~5.9

100

6.0~8.9

80

9.0~9.9

60

10.0~12.9

50

13.0~30.0

45

Frequency

Range MHz

ESR

Ohms Max.

EQUIVALENT SERIES RESISTANCE

PART NUMBER GENERATION

Part numbers for MS2 crystals are generated as follows:

3.2000MHz MS2 30/30/-10+60/12pF/60R

Example:

Nominal Frequency

Package

Calibration tolerance

at 25°C (±ppm)

Temperature Stability

over temp. range (±ppm)

Operating Temp. Range (°C)

(Lower and upper limits)

Load Capacitance

(Either SR for series or CL in pF)

Equivalent Series Resistance

(When special value is required)

MS2

AT-Cut Fundamental

25.0~30.0

150

30.0~50.0

100

50.0~70.0

80

Frequency

Range MHz

ESR

Ohms Max.

AT-Cut 3rd Overtone

24.0~40.0

40

Frequency

Range MHz

ESR

Ohms Max.

BTCut Fundamental