278-25.0M-20-50-H-T datasheet, PDF

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278-25.0M-20-50-H-T: DescriptionParallel - Fundamental Quartz Crystal,; CategoryPassive components Crystal/resonator; File Size138KB，2 Pages; ManufacturerOscilent; Websitehttp://www.oscilent.com; Environmental Compliance

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278-25.0M-20-50-H-T Overview

Parallel - Fundamental Quartz Crystal,

278-25.0M-20-50-H-T Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Objectid	7013973285
package instruction	SMD, 4 PIN
Reach Compliance Code	compliant
Other features	BULK
Ageing	2 PPM/YEAR
Crystal/Resonator Type	PARALLEL - FUNDAMENTAL
Drive level	10 µW
frequency stability	0.002%
frequency tolerance	50 ppm
load capacitance	20 pF
Installation features	SURFACE MOUNT
Nominal operating frequency	25 MHz
Maximum operating temperature	80 °C
Minimum operating temperature	-30 °C
physical size	L3.2XB2.5XH0.65 (mm)/L0.126XB0.098XH0.026 (inch)
Series resistance	70 Ω
surface mount	YES

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Oscilent Corporation | 278 Series Quartz Crystal

Page 1 of 2

SMD Quartz Crystal

Series Number

Package

Description

Last Modified

278

FEATURES

3.2 x 2.5 mm Chip Type

SMD Quartz Crystal

Mar. 24, 2014

- 3.2 x 2..5mm Surface Mount Chip Type Quartz Crystal

- Compact and Thin (0.65mm profile)

- Heat and Shock Resistant

- Suitable applications include telecomminucations equipment, short-range radio link

modules, DVC, DSC, PDA, and PC

- RoHS / Lead Free compliant

OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS

PARAMETERS

Frequency Range

Frequency Tolerance

Temperature Stability

Operating Temperature

Storage Temperature

Shunt Capacitance

Load Capacitance

Insulation Resistance

Drive Level

Aging

SYMBOL

F/Fo

TORP

TSTG

CONDITION

@ 25ºC

REFTO25ºC

100VDC

@25ºC per year

MINIMUM

±10

-20

-40

500

-2.0

TYPICAL

100

MAXIMUM

±30

+70

+85

300

+2.0

UNITS

MHz

ppm

ppm(

ºC)

ºC

µW

Ppm

EQUIVALENT SERIES RESISTANCE (ESR) AND MODE OF VIBRATION (MODE)

PARAMETERS

13.000MHZ ~ 19.999MHZ

20.000MHZ ~ 25.999MHZ

26.000MHZ ~ 54.000MHZ

MAX ESR (OHM)

MODE

Fundamental

http://www.oscilent.com/spec_pages/SMDCrystals/quartz_crystals_278.htm

3/24/2014

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