Quartz Crystal Resonators
METAL CAN WITH 4 SOLDERING PADS SURFACE MOUNT PACKAGE - HC494PD Series
FEATURES
RoHS Compliant (Pb-Free), Low Cost, Popular Microprocessor Crystals
Industry Standard SMD Footprint, Interchangeable with Plastic Molded Package
AT-cut Crystal, Excellent Aging, Extended Temperature Range
Withstand IR or Vapor Phase Reflow Soldering Process
SPECIFICATIONS
Frequency Range
Resonance Mode
3.500 MHz to 70.000 MHz
1 = Fundamental (3.5 to 36 MHz); 3 = 3rd Overtone (27 to 70 MHz)
Calibration Tolerance @25°C
Frequency Stability Ref @25°C
Temperature Range
Crystal Aging
Storage Temperature
A = ±50 ppm; B = ±30 ppm; C = ±20 ppm; D = ±15 ppm; E = ±10 ppm
100 = ±100 ppm; 50 = ±50 ppm; 30 = ±30 ppm
A = 0°C to 70°C; B = -40°C to 85°C; C = -10°C to 60°C; D = -20°C to 70°C
±5 ppm / year Maximum
-55°C to 125°C
Load Capacitance (CL)
Shunt Capacitance
Drive Level
CL = 18 pF (Standard), 16 pF, 20 pF, others, or S = Series resonant
7 pF Maximum
0.1 mW Typical, 1 mW Maximum
Creating a Part Number
HC494PD-16M000-1 B 50 A 18 -options
Product Series
Load Capacitance: 18, 16, 20, S = Series resonant
Frequency
Operating Temperature Range: A = 0 to 70°C
Resonance Mode: 1 = Fundamental
3 = 3rd Overtone
5 = 5th Overtone
Mode
3.500 - 3.999
4.000 - 4.999
5.000 - 5.999
6.000 - 6.999
7.000 - 8.999
9.000 - 12.999
13.000 - 15.999
Fund
Fund
Fund
Fund
Fund
Fund
Fund
100 = ±100 ppm
Tolerance at 25°C: A = ±50 ppm
30 = ±30 ppm
C = ±20 ppm
Max ESR (Ohms)
Frequency (MHz)
200
150
120
100
80
60
50
D = -20 to 70°C
50 = ±50 ppm
B = ±30 ppm
Equivalent Series Resistance
Frequency (MHz)
B = -40 to 85°C
Frequency Stability:
16.000 - 19.999
20.000 - 36.000
27.000 - 70.000
Mode
Max ESR (Ohms)
Fund
Fund
3rd O/T
40
30
100
4
3
3.5±0.15
3
Standard Type
1.2
4
5.1 MAX
OUTLINE DRAWING
Recommended Solder Pad Layout
9.0
MARKING
3.8 MAX
1.2
10.3 MAX
3
2
All dimensions are typical unless otherwise specified
www.4timing.com
1
9.0±0.3
B Type
9.0±0.3
4
2.2
3.5
2
3.5±0.15
2
13.2 MAX
5.6 MAX
1
2.2
2.3
2.3
1
Dimensions in Millimeters
c 2001-2007 Fortiming Corp. USA
