20.000MHZX21/10/15/-40+85/32PF [EUROQUARTZ]

Parallel - Fundamental Quartz Crystal, 20MHz Nom, ROHS COMPLIANT, ULTRA MINIATURE, SMD, 4 PIN;


型号：	20.000MHZX21/10/15/-40+85/32PF
厂家：	EUROQUARTZ LIMITED
描述：	Parallel - Fundamental Quartz Crystal, 20MHz Nom, ROHS COMPLIANT, ULTRA MINIATURE, SMD, 4 PIN 驱动晶体谐振器
文件：	总1页 (文件大小：167K)
中文：	中文翻译
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QUARTZ

EURO

X21 CRYSTALS

20.0MHz to 54.0MHz

2.0 x 1.6 x 0.6mm SMD

Frequency range 20MHz to 54MHz, fundamental mode

Ultra-miniature package 2.0 x 1.6 x 0.6mm

Packaged in standard EIA tape and reel

Exceptionally low ageing

High shock and vibration resistance

Ideal for PDAs, hand-held GPS, PCMCIA etc.

OUTLINE & DIMENSIONS

DESCRIPTION

X21 crystals are ultra-miniature AT-cut crystals covering the frequency

range 20MHz to 54MHz in fundamental mode. Their exceptionally

small size (2.0 x 1.6mm) and low mass coupled with high shock and

vibration resistance makes these crystals ideal for miniaturized

handheld equipment and similar high-density applications.

SPECIFICATION

Frequency Range

AT-Cut Fundamental:

Calibration Tolerance at 25ºC:

Frequency stability

-10° to +60°C

20.0MHz to 54.0MHz

±10ppm, ±20ppm or ±30ppm

from ±5ppm (contact Euroquartz)

from ±10ppm

-20° to +70°C

-40° to +85°C

from ±15ppm

Storage Temperature:

Equivalent Series Resistance:

Shunt Capacitance (C0):

Load Capacitance (CL):

Ageing:

-50°~+105°C

See table

2pF to 4pF typical, 5pF maximum

Series or from 8pF to 32pF

<±3ppm per year at +25°C

10 µW typ., 100 µW max.

10s maximum at 260°C twice

or 180s at 230°C, once.

EIA tape and reel

Drive level:

Reflow Soldering:

Packaging:

Note: The entire crystal package may be grounded via the top

metal lid and pads 2 and 4 on the underside of the unit.

PART NUMBER GENERATION

EQUIVALENT SERIES RESISTANCE

Part numbers for X21 crystals are generated as follows:

Frequency

Range MHz

ESR

Ω Max.

24.000MHz X21/10/30/-10+60/12pF/80R

Example:

Nominal Frequency

Package

20.0~30.0

30.1~54.0

120

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)

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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