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
EURO
QUARTZ 49SMD Crystals
OUTLINE & DIMENSIONS
DESCRIPTION
PART NUMBER FORMAT
8.000MHz 49SMD /10/10/-20+70/32/ 30R
Example:
Frequency in MHz
Package
49SMD or 49TSMD
Calibration tolerance
at 25°C (±ppm)
Temperature Stability
over temp. range (±ppm)
Operating Temp. Range (°C)
(Lower and upper limits)
Load Capacitance
(Either SR for series or CL in pF)
Equivalent Series Resistance
(Optional - use when special
value is required)
1.0MHz to 200.0MHz
SMD form of HC49 Crystals
1.0 ~1.3 SL Fund. 5000
2.01 ~ 3.0 AT Fund. 400
3.01 ~ 3.2 AT Fund. 200
3.21 ~ 3.5 AT Fund. 150
3.51 ~ 3.9 AT Fund. 120
3.91 ~ 5.0 AT Fund. 100
5.01 ~ 7.0 AT Fund. 50
7.01 ~ 10.0 AT Fund. 35
10.0 ~ 30.0 AT Fund. 25
30.1 ~ 45.0 AT Fund. 20
24.0 ~ 100 AT 3rd OT 40
80.0 ~ 160 At 5th OT 70
110 ~ 250 AT 7th OT 120
Frequency
Range MHz
Crystal Cut
Osc. Mode
ESR
Ω Max.
ESR and OSCILLATION MODE
Low-cost, industry-standard crystal unit formed for SMD
Available with close tolerances
Frequency range 1.0MHz to 200MHz
Specifications fully customisable
49SMD crystals are long-established, industry-standard HC49 crystals
with formed leads and a clip to facilitate surface mounting. The
crystals provide a high quality but very low cost source of system
clock frequency 49SMD crystals may be produced to very close
tolerances.
Frequency Range: 1.0MHz to 200MHz
Oscillation Mode: See table
Calibration Tolerance at 25ºC
SL-Cut (<1.3MHz): from ±50ppm
AT-Cut (>1.3MHz): from ±3ppm
Frequency Stability over temperature
SL-Cut (<1.3MHz): from ±100ppm -10° to +60°C
AT-Cut (>1.3MHz): from ±3ppm 0° to +50°C
(see table)
Shunt Capacitance (C0): 4pF typical, 7pF maximum
Load Capacitance (CL): Series or from 8pF to 32pF
(Customer specified CL)
Ageing: ±3ppm maximum, 1st year,
±1ppm per year thereafter.
Drive Level: 100mW typical., 500mW max.
Crystal Holder: Resistance-weld hermetic seal
Supply format: Bulk pack or 'Ammo Pak' tape.
SPECIFICATION
0~+50 ü ü ü ü ü ü ü
-10~+60 ü ü ü ü ü ü ü
-20~+70 X ü ü ü ü ü ü
-30~+80 X X X ü ü ü ü
-40~+85 X X X X ü ü ü
-55~+125 X X X X X ü ü
Temp.
Range °C ±7.5 ±10 ±15 ±20 ±30 ±50 ±100
Stability ppm
STABILITY OVER TEMPERATURE RANGE (AT-CUT CRYSTALS)
(ü= Available, X = Not available)
