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

7 x 5mm SMD, 4 pad or 2 pad

DESCRIPTION

Miniature surface-mount MQ crystals are produced using a ceramic

substrate and fitted with a hermetically-sealed metal lid. The crystals

are competitively priced, well-suited to mass-market electronic

applications and may also be produced to close tolerances making this

crystal a good choice for applications requiring low mass and tight

tolerances. There are two package variants, 4 pad and two pad.

Miniature size: 7.0mm x 5mm x 1.2mm height

Gold-plated ceramic base with metal seam-welded lid

To minimize EMI the whole crystal may be grounded

Tight tolerance of ±10pppm for telecommunications use

High shock and vibration resistance

·

Ideal for PDAs, GPS, PCMCIA and hand-held equipment

FEATURES

OUTLINE & DIMENSIONS

Frequency Range

AT-Cut Fundamental:

6.0MHz to 45.0MHz

AT-Cut 3rd Overtone:

30.0MHz to 125.0MHz

Calibration Tolerance at 25ºC*:

from ±5ppm

(±10, ±20 or ±30ppm standard)

Frequency stability

-10° to +60°C

from ±5ppm

-20° to +70°C

from ±10ppm

-40° to +90°C

from ±15ppm

-55 to +125°C

from ±20ppm

Storage Temperature:

-55°~+105°C

Effective Series Resistance:

See table

Shunt Capacitance (C0):

2pF to 4pF typical, 7pF maximum

Load Capacitance (CL):

Series or from 10pF to 32pF

(Customer specified CL)

Ageing:

<±3ppm per year at +25°C

Drive level:

100 mW maximum

Reflow Soldering:

10s maximum, 260°C twice

or 180s at 230°C, once.

Package:

Ceramic base, metal lid,

Hermetic seal

Packaging:

16mm EIA tape and reel

1000 pieces per reel

SPECIFICATION

6.0 ~ 11.0

AT Fund.

60

11.1 ~ 14.0

AT Fund.

50

14.1 ~ 45.0

AT Fund.

40

30.0 ~ 40.0

AT 3rd OT

100

40.1 ~ 50.0

AT 3rd OT

80

50.1 ~ 125

AT 3rd OT

90

Frequency

Range MHz

Crystal Cut/

Mode

ESR

Ohms Max.

EFFECTIVE SERIES RESISTANCE

MQ & MQ2 CRYSTALS

PART NUMBER GENERATION

12.000MHz MQ/20/30/-10+60/18pF/60R

Example:

Nominal Frequency

Package

(MQ = 4 pad, MQ2 = 2 pad

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

(Optional - use when special

value is required)

MQ2

MQ