EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE

Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001

info@euroquartz.co.uk

www.euroquartz.co.uk

DESCRIPTION

CX11SM crystals are designed for applications requiring very small

footprint and low profile (<1.0mm). Using micro-machining processes

this hermetically-sealed crystal ensures high stability and low ageing.

FEATURES

Designed for infrared, vapour phase or epoxy mounting

Low profile, (<1.0mm) hermetically sealed ceramic package

Excellent ageing characteristics

High shock and vibration resistance

Full military testing available

Available with glass or ceramic lid

Custom designs available

CX11SMAT CRYSTAL

Ultra-Miniature SMD Crystal

20MHz to 50MHz

HOW TO ORDER CX11SM AT CRYSTALS

CX11 -

S

-

C

-

SM1

-

24.0M,

100

/ 100 / - /

I

'S' if special,

custom design.

Otherwise leave

blank

Blank = glass lid

C = ceramic lid

Frequency

M = MHz

Calibration

Tolerance

@25°C

(in ppm)*

Temp. Range

C = -10° ~ +70°C

I = -40° ~ +85°C

M = -55° ~ +125°C

S = Customer specified

Frequency

Stability over

Temp. Range

(in ppm)*

*Alternative 'total' tolerance (in ppm)

CRYSTAL EQUIVALENT CIRCUIT

R1 Motional Resistance

L1 Motional Inductance

C1 Motional Capacitance

C0 Shunt Capacitance

PACKAGING OPTIONS

CX11SM crystals are available either tray packed (<250pcs) or tape

and reel (>250 pieces).

12mm tape, 178mm or 330mm reels (EIA 418).

Specifications stated are typical at 25°C unless otherwise indicated.

Specifications may change without notice.

SPECIFICATION

1.

Other tolerances available, contact Euroquartz sales

2.

Does not include calibration tolerance. (Frequency stability

characteristics follow that of the AT-Cut thickness-shear mode.)

3.

Per MIL-STD-202G, Method 204D, Condition D. Random

vibration testing also available.

Load Capacitance:

10pF (or as specified)

Drive Level:

200µW maximum

-10° to +70°C:

±50ppm to ±10ppm

-40° to +85°C:

±100ppm to ±20ppm

-55° to +125°C:

±100ppm to ±30ppm

Ageing First Year:

±5ppm maximum

(Better than ±1ppm available)

Shock, Survival:

5000g, 0.3ms, ½ sine

20g rms, 10~2000Hz swept sine

Operating Temperature Range:

-10°C to +70°C (Commercial)

-40°C to +85°C (Industrial)

-55°C to +125°C (Military)

Storage Temperature Range:

-55° to +125°C

Maximum Process Temperature:

+260°C for 20 seconds

OUTLINE & DIMENSIONS

Terminations

SM1 = Gold plated *

SM2 = Solder plated

SM3 = Solder dipped

SM4 = Solder plated *

SM5 = Solder dipped *

* = Lead free

TERMINATIONS - PLATING

SM1

Gold Plated (Lead Free)

SM2

Solder Plated

SM3

Solder Dipped

SM4

Solder Plated (Lead Free)

SM5

Solder Dipped (Lead Free)

Designation

Termination

Fundamental Frequency:

20.0MHz

24.0MHz

26.5MHz

Motional Resistance R (Ω):

80

30

30

Motional Capacitance C1 (fF):

1.0

1.4

1.6

QualityFactor Q (k):

100

150

120

Shunt Capacitance C0 (pF):

0.6

0.7

0.7

SM1

0.74

0.77

0.77

SM2

0.77

0.79

0.79

SM3

0.81

0.84

0.71

SM4

0.77

0.79

0.79

SM5

0.81

0.84

0.71

Glass

Lid

Ceramic

Lid

Dim. H

Thin Glass

Lid