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Datasheet> All Categories > Passive components> Crystal/resonator> 32.768KHZX4918/20/122.4/-40+85/9.0PF
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32.768KHZX4918/20/122.4/-40+85/9.0PF

Description
Parallel - Fundamental Quartz Crystal, 0.032768MHz Nom, ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN
CategoryPassive components    Crystal/resonator   
File Size131KB，1 Pages
ManufacturerEuroquartz
Websitehttp://www.euroquartz.co.uk/
Environmental Compliance
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32.768KHZX4918/20/122.4/-40+85/9.0PF Overview

Parallel - Fundamental Quartz Crystal, 0.032768MHz Nom, ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN

32.768KHZX4918/20/122.4/-40+85/9.0PF Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
package instructionROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN
Reach Compliance Codecompliant
Other featuresTAPE AND REEL
Ageing3 PPM/YEAR
Crystal/Resonator TypePARALLEL - FUNDAMENTAL
Drive level1 µW
frequency stability0.0122%
frequency tolerance20 ppm
load capacitance9 pF
Installation featuresSURFACE MOUNT
Nominal operating frequency0.032768 MHz
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
physical sizeL4.9XB1.8XH1.0 (mm)/L0.193XB0.071XH0.039 (inch)
Series resistance65000 Ω
surface mountYES
Base Number Matches1

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EURO
QUARTZ
4.9 x 1.8 x 1.0mm Miniature SMD
Ultra-miniature ceramic package 4.9 x 1.8 x 1.0mm
RoHS compliant and lead free
Low ageing, high shock and vibration resistance
Uses include battery operated equipment
DESCRIPTION
X4918 crystals provide 32.768kHz in an ultra-miniature package. The
part is designed to provide a small component size for real-time clock
applications. The micro-miniature size and rugged construction make
them ideal for real time clocks and battery powered, hand-held
equipment.
X4918 SERIES CRYSTALS
32.768kHz
OUTLINE & DIMENSIONS
SPECIFICATION
Nominal Frequency:
Calibration Tolerance at 25ºC:
32.7680kHz
±20ppm
±30ppm (standard)
±50ppm
Crystal Cut:
XY-cut
Load Capacitance (CL):
12.5pF, 9.0pF or 7.0pF
Equivalent Series Resistance (ESR): 65kW typical, 70kW max.
Drive level:
1.0mW max.
Temperature Coefficient:
-0.034ppm/°C
2
(Parabolic)
Turnover Temperature:
+25°±5°C
Quality Factor:
40,000 min.
Shunt Capacitance:
1.3pF typical
Motional Capacitance:
21fF typical
Capacitance Ration:
619 typical
Ageing:
±3ppm/year max.
Insulation Resistance:
500MW minimum @100VDC
Operating Temperature Range:
-40° to +85°C
Storage Temerature Range:
-55° to +125°C
Reflow Soldering:
10s max. at 250°C ±10°C
Shock Resistance:
±5ppm max, free drops x3 from
75cm height onto hard wood
surface.
Packaging:
12.0mm EIA tape, 4.0mm pitch,
180mm diameter reel, 3k
pieces/reel
PART NUMBER AND SPECIFICATION
Order part number: 32.768kHz X4918/30/--/-40+85/12.5pF
This provides a 32.768kHz crystal in X3215 package with ±20ppm
calibration tolerance at 25°C, temperature stability according to the
above parabolic coefficient at a load capacitance of 12.5pF.
Options:
Calibration Tolerance:
±20ppm
±30ppm (standard)
±50ppm
7.0pF
9.0pF
12.5pF (standard)
Load Capacitance:
STABILITY OVER TEMPERATURE
X-Cut Crystal
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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Description Parallel - Fundamental Quartz Crystal, 0.032768MHz Nom, ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN Parallel - Fundamental Quartz Crystal, 0.032768MHz Nom, ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN Parallel - Fundamental Quartz Crystal, 0.032768MHz Nom, ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN Parallel - Fundamental Quartz Crystal, 0.032768MHz Nom, ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN Parallel - Fundamental Quartz Crystal, 0.032768MHz Nom, ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN Parallel - Fundamental Quartz Crystal, 0.032768MHz Nom, ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN Parallel - Fundamental Quartz Crystal, 0.032768MHz Nom, ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN Parallel - Fundamental Quartz Crystal, 0.032768MHz Nom, ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN Parallel - Fundamental Quartz Crystal, 0.032768MHz Nom, ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN
Is it lead-free? Lead free Lead free Lead free Lead free Lead free Lead free Lead free Lead free Lead free
Is it Rohs certified? conform to conform to conform to conform to conform to conform to conform to conform to conform to
package instruction ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN ROHS COMPLIANT, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN
Reach Compliance Code compliant compli compliant compliant compliant compliant compliant compliant compliant
Other features TAPE AND REEL TAPE AND REEL TAPE AND REEL TAPE AND REEL TAPE AND REEL TAPE AND REEL TAPE AND REEL TAPE AND REEL TAPE AND REEL
Ageing 3 PPM/YEAR 3 PPM/YEAR 3 PPM/YEAR 3 PPM/YEAR 3 PPM/YEAR 3 PPM/YEAR 3 PPM/YEAR 3 PPM/YEAR 3 PPM/YEAR
Crystal/Resonator Type PARALLEL - FUNDAMENTAL PARALLEL - FUNDAMENTAL PARALLEL - FUNDAMENTAL PARALLEL - FUNDAMENTAL PARALLEL - FUNDAMENTAL PARALLEL - FUNDAMENTAL PARALLEL - FUNDAMENTAL PARALLEL - FUNDAMENTAL PARALLEL - FUNDAMENTAL
Drive level 1 µW 1 µW 1 µW 1 µW 1 µW 1 µW 1 µW 1 µW 1 µW
frequency stability 0.0122% 0.0122% 0.0122% 0.0122% 0.0122% 0.0122% 0.0122% 0.0122% 0.0122%
frequency tolerance 20 ppm 50 ppm 50 ppm 20 ppm 30 ppm 30 ppm 20 ppm 50 ppm 30 ppm
load capacitance 9 pF 9 pF 12.5 pF 12.5 pF 7 pF 9 pF 7 pF 7 pF 12.5 pF
Installation features SURFACE MOUNT SURFACE MOUNT SURFACE MOUNT SURFACE MOUNT SURFACE MOUNT SURFACE MOUNT SURFACE MOUNT SURFACE MOUNT SURFACE MOUNT
Nominal operating frequency 0.032768 MHz 0.032768 MHz 0.032768 MHz 0.032768 MHz 0.032768 MHz 0.032768 MHz 0.032768 MHz 0.032768 MHz 0.032768 MHz
Maximum operating temperature 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C
physical size L4.9XB1.8XH1.0 (mm)/L0.193XB0.071XH0.039 (inch) L4.9XB1.8XH1.0 (mm)/L0.193XB0.071XH0.039 (inch) L4.9XB1.8XH1.0 (mm)/L0.193XB0.071XH0.039 (inch) L4.9XB1.8XH1.0 (mm)/L0.193XB0.071XH0.039 (inch) L4.9XB1.8XH1.0 (mm)/L0.193XB0.071XH0.039 (inch) L4.9XB1.8XH1.0 (mm)/L0.193XB0.071XH0.039 (inch) L4.9XB1.8XH1.0 (mm)/L0.193XB0.071XH0.039 (inch) L4.9XB1.8XH1.0 (mm)/L0.193XB0.071XH0.039 (inch) L4.9XB1.8XH1.0 (mm)/L0.193XB0.071XH0.039 (inch)
Series resistance 65000 Ω 65000 Ω 65000 Ω 65000 Ω 65000 Ω 65000 Ω 65000 Ω 65000 Ω 65000 Ω
surface mount YES YES YES YES YES YES YES YES YES
Base Number Matches 1 1 1 1 1 1 1 1 1

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