FREQ349USMX/30/30/-10+60/30PF/ATF [EUROQUARTZ]

Parallel - Fundamental Quartz Crystal, 4.1MHz Min, 4.9MHz Max, ROHS COMPLIANT, HERMETIC SEALED, RESISTANCE WELDED, SMD, 2 PIN;


型号：	FREQ349USMX/30/30/-10+60/30PF/ATF
厂家：	EUROQUARTZ LIMITED
描述：	Parallel - Fundamental Quartz Crystal, 4.1MHz Min, 4.9MHz Max, ROHS COMPLIANT, HERMETIC SEALED, RESISTANCE WELDED, SMD, 2 PIN
文件：	总1页 (文件大小：59K)
中文：	中文翻译
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EUROQUARTZ

49USMX CRYSTALS

49SMD Standard and Low Profile

FEATURES

• Low cost crystal for mass market applications

• Surface mount version of HC49-4H crystal

• Comprehensive stockholding of standard frequencies

• Customized parts readily available

OUTLINE & DIMENSIONS

• Industry-standard package

• Low-profile versions available

DESCRIPTION

49USMX crystals are low profile surface mount crystals that have the

same footprint as standard HC49 or HC49-4H crystals. 49USMD

crystals are ideal for use in low cost, mass-market applications. The

crystal may also be specified with close tolerances when required.

SPECIFICATION

Frequency Range:

Calibration Tolerance:

3.2MHz to 70MHz

± 30ppm at 25°C standard

± ±0ppm available

Frequency Stability over Temp.

AT-Cut:

BT-Cut:

Operating Temperature Range:

Shunt Capacitance (C0):

Load Capacitance (CL):

± 30ppm over -±0° ~ +60°*

± ±00ppm over -±0° ~ +60°C*

-±0° ~ +60°C to -40° ~ +85°C

4pf typical, 7pF maximum

Series or from 8pF to 32pF

(Customer specified)

Ageing:

± 3ppm maximum in first year

± ±ppm per year thereafter

(Ta = 25°C, drive ±00 W)

±00mW typical, 500mW maximum

260°C, ±0s maximum

Hermetic seal, resistance weld

EIA 24mm tape and reel

±000 pieces per reel

PART NUMBERING

Drive Level:

Reflow Soldering:

Holder:

49USMX part numbers are derived as follows:

Packaging:

Example: 16.000MHz 49USMX/30/50/-20+70/30pF/ATF

RoHS Status:

Compliant

Nominal Frequency

* Closer tolerances may be specified

Holder Style & Height

49USMX = 4.2mm

49USMXL = 3.2mm

49USMX25 = 2.5mm

ESR & OSCILLATION MODE

Calibration Tolerance at 25°C

± ppm

Frequency

Range

(MHz)

Max.

ESR

(Ohms)

Crystal Cut

Oscillation Mode

Temperature Stability

(Over Operating Temperature Range)

± ppm

3.2~3.4

3.5~4.0

4.±~4.9

5.0~5.9

6.0~8.9

9.0~9.9

±0.0~±2.9

±3.0~24.0

24.±~30.0

24.0~48.0

27.0~30.0

30.0~50.0

50.±~70.0

AT Fund.

BT Fund.

AT 3rd OT

300

±50

±20

±00

Operating Temperature Range

°C, lower and upper figure

(May also be shown as lower figure only)

Circuit Condition

SR = Series Resonant

Or 8pF to 32pF

±50

±00

Operating Mode

ATF = AT-Cut, Fundamental

BTF = BT-Cut Fundamental

AT3 = AT-Cut 3rd Overtone

* If required the maximum ESR may be specified,

in which case use the suffix ‘/R40’ where for

instance a maximum ESR of 40W is required.

EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE

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

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