CX7-C-SM1-25.0M,50/50/-/I [EUROQUARTZ]

Parallel - Fundamental Quartz Crystal, 25MHz Nom, HERMETIC SEALED, ULTRA MINIATURE, LEADLESS, CERAMIC, SMD, 2 PIN;


型号：	CX7-C-SM1-25.0M,50/50/-/I
厂家：	EUROQUARTZ LIMITED
描述：	Parallel - Fundamental Quartz Crystal, 25MHz Nom, HERMETIC SEALED, ULTRA MINIATURE, LEADLESS, CERAMIC, SMD, 2 PIN 驱动晶体谐振器
文件：	总1页 (文件大小：110K)
中文：	中文翻译
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QUARTZ

EURO

CX7SM CRYSTAL

Ultra-Miniature SMD Crystal

14MHz to 250MHz

FEATURES

Designed for infrared, vapour phase or epoxy mounting

Low profile, (<1.2mm) hermetically sealed ceramic package

Excellent ageing characteristics

High shock and vibration resistance

Full military testing available

OUTLINE & DIMENSIONS

Available with glass or ceramic lid

Custom designs available

DESCRIPTION

CX7SM crystals are leadless devices designed for surface mounting.

The ultra-miniature crystals are hermetically sealed in a rugged,

ceramic package. The crystals have a very low profile and small area.

Glass Ceramic

Dim. H

Lid

SPECIFICATION

SM1

SM2

SM3

1.14

1.17

1.22

1.27

1.30

1.35

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

Specifications may change without notice.

49.0MHz

Motional Resistance R1:

Motional Capacitance C1:

Quality Factor Q:

14kΩ

2.4fF

100,000

0.8pF

Shunt Capacitance:

CRYSTAL EQUIVALENT CIRCUIT

Standard Calibration Tolerance : ±100ppm to ±1000ppm

Load Capacitance:

Drive Level:

10pF (or as specified)

200µW maximum

Frequency Stability

-10° to +70°C:

-40° to +85°C:

-55° to +125°C:

±50ppm to ±10ppm

±100ppm to ±35ppm

±100ppm to ±50ppm

±5ppm maximum

R1 Motional Resistance

C1 Motional Capacitance

L1 Motional Inductance

C0 Shunt Capacitance

Ageing First Year:

Shock, Survival :

5000g peak, 0.3ms, ½ sine

20g rms, 10~2000Hz random

-10°C to +70°C (Commercial)

-40°C to +85°C (Industrial)

-55°C to +125°C (Military)

-55° to +125°C

Vibration, Survival:

Operating Temperature Range:

PACKAGING OPTIONS

CX7SM crystals are available either tray packed (<250pcs) or tape

and reel (>250 pieces).

Storage Temperature Range:

Maximum Process Temperature:

+260°C for 20 seconds

16mm tape, 178mm or 330mm reels (EIA 418).

Other tolerances available, as low as ±5ppm.

Does not include calibration tolerance. (Frequency stability

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

Higher shock version available.

TERMINATIONS - PLATING

Designation

Termination

SM1

SM2

SM3

Gold Plated

Nickel, Solder Plated

Nickel, Solder Plated and Solder Dipped

HOW TO ORDER CX7SM AT CRYSTALS

CX7 - S

SM1 -

49.0M,

50 / 50 / - /

Calibration

Tolerance

@25°C

Terminations

Frequency

Stability over

Temp. Range

(in ppm)*

Frequency

M = MHz

Blank = glass lid

C = ceramic lid

'S' if special,

Temp. Range

SM1 = Gold plated

SM2 = Solder plated

SM3 = Solder dipped

custom design.

Otherwise leave

blank

C = -10° ~ +70°C

I = -40° ~ +85°C

M = -55° ~ +125°C

S = Customer specified

(in ppm)*

*Alternative 'total' tolerance (in ppm)

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

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