Seam sealed quartz crystal resonator CHANGXING ELECTRONICS 8DSC271G0012L for wireless communication and PDA devices

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Product Description

Product Overview

The Seam3225 is a high-precision Quartz Crystal Resonator designed for demanding applications. It offers excellent frequency stability and is optimized for reducing EMI effects, making it an ideal choice for Bluetooth devices, wireless communication sets, DSCs, PDAs, and mobile phones. This product is RoHS Compliant and Pb Free.

Product Attributes

Brand: CHANGXING ELECTRONICS CO.,LTD.
Product Series: 8D Series
Product Type: Quartz Crystal Resonator
Sealing Type: Seam Sealing
Compliance: RoHS Compliant / Pb Free
Crystal Cutting Type: AT CUT (thickness shear mode)

Technical Specifications

Parameter	Model: DLD2 (Low)	Model: DLDH2 - DLDH2	Model: DLDF - DLDF	Model: Others	Units	Notes
Nominal Frequency	27.120000				MHz
Frequency Tolerance (at 25 3 )	10				ppm
Load Capacitance	12				pF
Frequency Tolerance	30				ppm	at DC 100V
Operating Temperature Range	-40+85
Storage Temperature Range	-55+125
Aging (1st Year)	3				ppm
Drive Level	100				uW
Shunt Capacitance (C0)	5				pF	Max.
Motional Capacitance (C1)				0.01100W/Step	fF
Effective Resistance (Rr)	40	Max.	10	Max.
Pulling Sensitivity (TS)			40	Max.	ppm/pF
Spurious Response	-3.0				dB
Insulation Resistance	500	Min.			M
Over Operating Temp. Range	-1000+5000				ppm
Dimensions (L x W x H)	3.400.1 x 2.700.1 x 1.400.1				mm
Reel Quantity				3,000 pcs per reel (WHITE)	pcs

Dimension	Value	Unit
L	3.40	0.1 mm
W	2.70	0.1 mm
H	1.40	0.1 mm
L1	4.00	0.1 mm
W1	4.00	0.11 mm
A	1.55	0.05 mm
B	1.75	0.1 mm
C	8.0	0.2 mm
D	4.00	0.1 mm
E	178	1.0 mm
F	13	0.5 mm
G	11.5	0.2 mm
H	8.0	+1.0 mm

Marking

LOGO, MHz, , ,

Reflow Condition

Pre-heat temperature: 125 (Total test time 12 hours)
Pre-heat time: 60 120 sec.
Test temperature: 260 5
Test time: 10 1 sec.

Packing

(EIA-481-2) Standard Reel Quantity: 3,000 pcs per reel (WHITE)

Reliability Specifications

Mechanical Endurance

Vibration: Perpendicular axes, 10 2000 Hz, Amplitude 1.52 mm/20G, Sweep time 20 minute (4 hours each axis)
Mechanical Shock: Half sine wave (1000 G), 0.5m sec. duration time (3 times each of three mutually perpendicular axes)
Drop Test: 150 cm height, 3 times on concrete floor
Solderability: Flux Rosin resin methyl alcohol solvent (1:4), Immersion time 5 1 seconds

Environmental Endurance

High Temp & Humidity: 85 3, RH 85%, 500Hrs
Low Temp. Storage: -40 3 for 500 12 hours
Thermal Shock: Total 100 cycles of temperature cycle (+125 3 for 500 12 hours)
Pressure Cooker Storage: 125 3, RH100%, 2 bar, 240Hrs
Resistance To Soldering Heat: 260 5
High Temp. Storage: 260 5, Immersing depth 0.5 mm minimum
Helium Bombing: 4.5 Kgf / cm2 for 2 hr
Gross Leak Test: Test Pressure: 2Kg / cm2
Fine Leak Test: (Standard Sample For Automatic Gross Leak Detector)

Material Composition Declaration

No.	Name of Part	Material Name	Material Mass(mg)	Material mass (%)	Constituent name	CAS No.	Material Analysis(%)
1	Base	Ceramics		23.09%	Al2O3	1344-28-1	92.40%
					SiO2	7631-86-9	4.31%
					Cr2o3	1308-38-9	1.50%
					MgO	1309-48-4	0.69%
					CaO	1305-78-8	1.10%
2	Cover	Metallizing		36.95%	Fe	7439-89-6	47.71%
					Ni	7440-02-0	26.11%
					Co	7440-48-4	15.44%
3	Adhesive	Polymer		15.01%	Ni	7440-02-0	10.74%
					Ag	7440-22-4	75.00%
					SiO2	14808-60-7	5.00%
					Silicone resin		5.00%
					Petroleum solvent		5.00%
4	Wafer	Quartz	0.45	2.60%	SiO2		100.00%
5	Electrode	Metal	0.20	1.15%	Cr	7440-47-3	5.56%
					Ag	7440-22-4	94.44%
6	Solder	Metal		20.91%	W	7440-33-7	62.50%
					Au	7440-57-5	4.61%
					Ni	7440-02-0	32.89%
					Fe	7439-89-6	40.70%
					Ni	7440-02-0	21.80%
					Co	7440-48-4	12.80%
					Ag	7440-22-4	21.00%
					Cu	7440-50-8	3.70%