ECM2A4C2A18-19.660M TR
Series
RoHS Compliant (Pb-free) 2.0mm x 2.5mm 4 Pad
Ceramic SMD Crystal
Frequency Tolerance
±15ppm Maximum
Frequency Stability
±30ppm Maximum
Operating Temperature Range
-20°C to +70°C
RoHS
Pb
Packaging Options
Tape & Reel
ECM2A 4 C 2 A 18 -19.660M TR
Nominal Frequency
19.660MHz
Load Capacitance
18pF Parallel Resonant
Mode of Operation
AT-Cut Fundamental
ELECTRICAL SPECIFICATIONS
Nominal Frequency
Frequency Tolerance
Frequency Stability
Aging at 25°C
Operating Temperature Range
Load Capacitance
Shunt Capacitance (C0)
Equivalent Series Resistance
Mode of Operation
Drive Level
Spurious Response
Storage Temperature Range
Insulation Resistance
19.660MHz
±15ppm Maximum
±30ppm Maximum
±3ppm/year Maximum
-20°C to +70°C
18pF Parallel Resonant
5pF Maximum
100 Ohms Maximum
AT-Cut Fundamental
100µWatts Maximum
-3dB Minimum; Fo to Fo +5000ppm
-40°C to +90°C
500 Megaohms Minimum at 100Vdc
ENVIRONMENTAL & MECHANICAL SPECIFICATIONS
ESD Susceptibility
Fine Leak Test
Flammability
Gross Leak Test
Mechanical Shock
Moisture Resistance
Moisture Sensitivity
Resistance to Soldering Heat
Resistance to Solvents
Solderability
Temperature Cycling
Vibration
MIL-STD-883, Method 3015, Class 1, HBM: 1500V
MIL-STD-883, Method 1014, Condition A
UL94-V0
MIL-STD-883, Method 1014, Condition C
MIL-STD-883, Method 2002, Condition B
MIL-STD-883, Method 1004
J-STD-020, MSL 1
MIL-STD-202, Method 210, Condition K
MIL-STD-202, Method 215
MIL-STD-883, Method 2003
MIL-STD-883, Method 1010, Condition B
MIL-STD-883, Method 2007, Condition A
www.ecliptek.com | Specification Subject to Change Without Notice | Rev B 3/11/2011 | Page 1 of 5
ECM2A4C2A18-19.660M TR
MECHANICAL DIMENSIONS (all dimensions in millimeters)
PIN
1
CONNECTION
Crystal
Cover/Ground
Crystal
Cover/Ground
2.00
±0.10
MARKING
ORIENTATION
0.65 ±0.10
4
1
0.95
±0.10
3
2
0.675 ±0.100
(X4)
2
0.775
±0.100
(X4)
3
4
LINE MARKING
1
2
19.6
YZZ
Y=Last Digit of Year
ZZ=Week of the Year
2.50
±0.10
0.55 MAX
Suggested Solder Pad Layout
All Dimensions in Millimeters
1.0 (X4)
1.2 (X4)
0.5
Solder Land
(X4)
0.3
All Tolerances are ±0.1
www.ecliptek.com | Specification Subject to Change Without Notice | Rev B 3/11/2011 | Page 2 of 5
ECM2A4C2A18-19.660M TR
Tape & Reel Dimensions
Quantity Per Reel: 1000 Units
4.00 ±0.10
2.00 ±0.10
DIA 1.50 ±0.10
0.25 ±0.05
3.50 ±0.10
8.00 ±0.20
4.50 ±0.10
2.80
±0.10
4.00 ±0.10
*Compliant to EIA 481A
2.30 ±0.10
1.00 ±0.10
1.5 MIN
DIA 40 MIN
Access Hole at
Slot Location
14.4 MAX
330 MAX
DIA 50 MIN
DIA 20.2 MIN
2.5 MIN Width
10.0 MIN Depth
Tape slot in Core
for Tape Start
8.4 +1.5/-0.0
DIA 13.0 ±0.2
www.ecliptek.com | Specification Subject to Change Without Notice | Rev B 3/11/2011 | Page 3 of 5
ECM2A4C2A18-19.660M TR
Recommended Solder Reflow Methods
T
P
Critical Zone
T
L
to T
P
Ramp-up
Ramp-down
Temperature (T)
T
L
T
S
Max
T
S
Min
t
S
Preheat
t 25°C to Peak
t
L
t
P
Time (t)
High Temperature Infrared/Convection
T
S
MAX to T
L
(Ramp-up Rate)
Preheat
- Temperature Minimum (T
S
MIN)
- Temperature Typical (T
S
TYP)
- Temperature Maximum (T
S
MAX)
- Time (t
S
MIN)
Ramp-up Rate (T
L
to T
P
)
Time Maintained Above:
- Temperature (T
L
)
- Time (t
L
)
Peak Temperature (T
P
)
Target Peak Temperature (T
P
Target)
Time within 5°C of actual peak (t
p
)
Ramp-down Rate
Time 25°C to Peak Temperature (t)
Moisture Sensitivity Level
3°C/second Maximum
150°C
175°C
200°C
60 - 180 Seconds
3°C/second Maximum
217°C
60 - 150 Seconds
260°C Maximum for 10 Seconds Maximum
250°C +0/-5°C
20 - 40 seconds
6°C/second Maximum
8 minutes Maximum
Level 1
www.ecliptek.com | Specification Subject to Change Without Notice | Rev B 3/11/2011 | Page 4 of 5
ECM2A4C2A18-19.660M TR
Recommended Solder Reflow Methods
T
P
Critical Zone
T
L
to T
P
Ramp-up
Ramp-down
Temperature (T)
T
L
T
S
Max
T
S
Min
t
S
Preheat
t 25°C to Peak
t
L
t
P
Time (t)
Low Temperature Infrared/Convection 240°C
T
S
MAX to T
L
(Ramp-up Rate)
Preheat
- Temperature Minimum (T
S
MIN)
- Temperature Typical (T
S
TYP)
- Temperature Maximum (T
S
MAX)
- Time (t
S
MIN)
Ramp-up Rate (T
L
to T
P
)
Time Maintained Above:
- Temperature (T
L
)
- Time (t
L
)
Peak Temperature (T
P
)
Target Peak Temperature (T
P
Target)
Time within 5°C of actual peak (t
p
)
Ramp-down Rate
Time 25°C to Peak Temperature (t)
Moisture Sensitivity Level
5°C/second Maximum
N/A
150°C
N/A
60 - 120 Seconds
5°C/second Maximum
150°C
200 Seconds Maximum
240°C Maximum
240°C Maximum 1 Time / 230°C Maximum 2 Times
10 seconds Maximum 2 Times / 80 seconds Maximum 1 Time
5°C/second Maximum
N/A
Level 1
Low Temperature Manual Soldering
185°C Maximum for 10 seconds Maximum, 2 times Maximum.
High Temperature Manual Soldering
260°C Maximum for 5 seconds Maximum, 2 times Maximum.
www.ecliptek.com | Specification Subject to Change Without Notice | Rev B 3/11/2011 | Page 5 of 5
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