250.000MHZHC49/T/3W/3/7.5/0/50PF/AT7 datasheet, PDF

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250.000MHZHC49/T/3W/3/7.5/0/50PF/AT7: DescriptionParallel - 7Th Overtone Quartz Crystal, 250MHz Nom, RESISTANCE WELDED, HERMATIC SEALED PACKAGE-3; CategoryPassive components Crystal/resonator; File Size156KB，1 Pages; ManufacturerEuroquartz; Websitehttp://www.euroquartz.co.uk/; Environmental Compliance

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250.000MHZHC49/T/3W/3/7.5/0/50PF/AT7 Overview

Parallel - 7Th Overtone Quartz Crystal, 250MHz Nom, RESISTANCE WELDED, HERMATIC SEALED PACKAGE-3

250.000MHZHC49/T/3W/3/7.5/0/50PF/AT7 Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
package instruction	RESISTANCE WELDED, HERMATIC SEALED PACKAGE-3
Reach Compliance Code	compli
Ageing	3 PPM/FIRST YEAR
Crystal/Resonator Type	PARALLEL - 7TH OVERTONE
Drive level	1000 µW
frequency stability	0.0008%
frequency tolerance	3 ppm
load capacitance	50 pF
Installation features	THROUGH HOLE MOUNT
Nominal operating frequency	250 MHz
Maximum operating temperature	50 °C
Minimum operating temperature
physical size	L11.5XB4.9XH11.2 (mm)/L0.453XB0.193XH0.441 (inch)
Series resistance	120 Ω
surface mount	NO
Base Number Matches	1

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THROUGH-HOLE CRYSTALS

HC49 SERIES CRYSTALS

DESCRIPTION

HC49 crystals are a long-established industry-standard part. Basic

specification HC49 crystals provide the lowest cost crystal available but

these crystals can also be manufactured to very close tolerances and low

ESR values. Holder variants are HC49/T (truncated), providing a lower

height version, 3-wire versions where the crystal base and body can be

earthed by a centre earth wire and HC50 which has larger diameter leads

specifically for socket mounting.

OUTLINES & DIMENSIONS

FEATURES

Very low cost crystal

Available with close tolerances

Fully customisable specification

Comprehensive Euroquartz stockholding

Industry-standard package with options

Very wide frequency range

GENERAL SPECIFICATION

Frequency Range:

Calibration Tolerance at 25ºC:

Frequency stability over temp:

Load Capacitance:

Ageing:

Drive level:

Static capacitance (C0):

Holder:

Part Numbers for Holder Variants *

Holder Type

Standard 2 lead:

Low height versions:

Centre Earth Lead:

Centre Earth Lead (Low):

‘Plug-in’ for use in socket:

Holder Designation

HC49

HC49/T (from 4.0MHz)

HC49/3W

HC49/T/3W (from 4.0MHz)

HC-50

1.0MHz to 250.0MHz

from ±3ppm to ±50ppm

from ±3ppm to ±100ppm

8pF to 50pF, or Series

±3ppm max 1st year,

±1ppm max per year after

1mW max

7pF max

Resistance-weld, hermetic seal

* HC49 crystals are also available for surface-mount applications with

formed leads and fitted with a clip. See ‘49MJ’ in the surface-mount

crystal section on Euroquartz website; www.euroquartz.co.uk

OSCILLATION MODE & ESR

Frequency

(MHz)

1.0 ~ 1.3

2.01 ~ 3.0

3.01 ~ 3.2

3.21 ~ 3.5

3.51 ~ 3.9

3.91 ~ 5.0

5.01 ~ 7.0

7.01 ~ 10.0

10.0 ~ 30.0

30.1 ~ 45

24.0 ~ 100

80.0 ~ 160

110 ~ 250

Crystal Cut/

Oscillation Mode

SL Fund.

AT Fund.

AT Fund

AT Fund.

AT 3

AT 5th OT

AT 7th OT

ESR (max)

(Ohms)

5000

400

200

150

120

100

120

FREQUENCY STABILITY OVER TEMPERATURE

Operating

Temp. °C

0° to +50°

-10° to +60°

-20° to +70°

-30° to +80°

-40° to +90°

-55° to +105°

Temperature Stability (ppm)

±3

±5

±7.5

±10

±15

±20

±30

PART NUMBER GENERATION

HC49 crystal part numbers are derived as follows:

Indicates this stability is available over the stated operating temp. range

Example:

16.000MHz HC49/30/50/10/30pF/ATF

Frequency/Holder/Calibration/Temp. Stability/ Temp. Range/Circuit

EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE

Tel: +44 1460 230000 Fax: +44 1460 230001 email: info@euroquartz.co.uk web: www.euroquartz.co.uk

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