SURFACE MOUNT MICROPROCESSOR CRYSTAL
Page 1 of 3
SERIES R2520
FEATURES
COMPACT DESIGN
HIGH ACCURACY
EXCELLENT FOR HIGH DENSITY SURFACE MOUNTING
SPECIFICATIONS
PARAMETER
VALUE
16.00 MHz to 55.00 MHz
FUNDAMENTAL ONLY
±50 PPM MAXIMUM
(±10, AND ±20 PPM AVAILABLE)
±50 PPM MAXIMUM
(±10, AND ±20 PPM AVAILABLE)
1
-10°C TO +60°C STANDARD
1
-40°C TO +85°C EXTENDED
-40°C TO +85°C
±3 PPM PER YEAR MAXIMUM
8 pF to 32 pF OR SERIES
SEE TABLE 1
7 pF MAXIMUM
500 µW MAXIMUM
±5 PPM MAXIMUM 75 cm DROP TEST IN
3 AXES ONTO A HARD SURFACE
260°C ±5°C FOR 10s MAXIMUM
FREQUENCY RANGE
MODE OF OSCILLATION
FREQUENCY TOLERANCE AT 25°C
FREQUENCY STABILITY OVER TEMPERATURE
OPERATING TEMPERATURE RANGE
STORAGE TEMPERATURE RANGE
AGING
LOAD CAPACITANCE
EQUIVALENT SERIES RESISTANCE
SHUNT CAPACITANCE
DRIVE LEVEL
SHOCK RESISTANCE
REFLOW CONDITIONS
1
NOTE: NOT ALL STABILITIES ARE AVAILABLE FOR ALL OPERATING TEMPERATURE RANGES.
CONTACT FACTORY FOR AVAILABILITY.
TABLE 1
FREQUENCY
(MHz)
16.000 TO 18.999
19.000 TO 24.999
25.000 TO 31.999
32.000 TO 50.000
MODE
FUND
FUND
FUND
FUND
MAX ESR
(OHMS)
90
80
60
50
R A L T R O N E L E C T R O N I C S
1 0 4 0 0 N .W . 3 3
rd
STREET
Miami, Florida 33172
U.S.A.
Telephone: 305-593-6033
Fax: 305-594-3973
e-mail: sales@raltron.com
web site: http://www.raltron.com
SURFACE MOUNT MICROPROCESSOR CRYSTAL
Page 2 of 3
SERIES R2520
PART NUMBERING SYSTEM
-
FREQUENCY
-
LOAD CAPACITANCE
-
MODE
-
TOLERANCE/STABLITY
(PPM/PPM)
TYPE
R2520
-
IN MHz
-
10 TO 32 pF FOR PARALLEL
S FOR SERIES
-
-
TAPE &
REEL
TR
-
Blank FOR < 24.576 MHz
F FOR ≥ 24.576 MHz
-
Blank FOR MAXIMUM
PPMPPM
Example: 1020, 2050
-
-
EXTENDED
TEMPERATURE
Blank FOR STANDARD
EXT FOR EXTENDED
EXAMPLE: R2520-20.000-10-2050-TR
Surface Mount Crystal, 2.5 mm x 2.0 mm package, 20.000 MHz, 10 pF load, ±20 ppm Tolerance, ±20 ppm Stability
over the Operating Temperature from -10°C to +60°C, Tape and Reel packaging
MECHANICAL SPECIFICATION
CARRIER TAPE DIMENSIONS
2.5 ± 0.2
.098 ± .008
TOP VIEW
GND
1.5 DIA
.06 DIA
2.0 ± 0.05
.079 ± .002
4.0 ± 0.1
.16 ± .004
MARKING
AREA
0.50
MAX
.020 MAX
2.0 ± 0.2
.079
±
.008
GND
LAND PATTERN
0.8
.031
1.0
.040
.65
.026
0.8
.031
1.4
.055
NOTE: REFER TO EIA-481 FOR DIMENSIONS
1.8
.070
PACKAGING
178 mm REEL DIAMETER
8 mm TAPE WIDTH, 4 mm PITCH
QUANTITY: 1000 PIECES PER REEL
IN ACCORDANCE WITH EIA-481
R A L T R O N E L E C T R O N I C S
1 0 4 0 0 N .W . 3 3
rd
STREET
Miami, Florida 33172
U.S.A.
Telephone: 305-593-6033
Fax: 305-594-3973
e-mail: sales@raltron.com
web site: http://www.raltron.com
8
SURFACE MOUNT MICROPROCESSOR CRYSTAL
Page 3 of 3
SERIES R2520
REFLOW PROFILE
t
P
T
P
Ramp-up
Critical Zone
T
L
to T
P
T
L
T
SMAX
Temp.
[°C]
T
SMIN
t
S
Preheat
t
L
Ramp-down
t[25°C] to Peak
Time [sec]
Reflow profile
Temperature Min Preheat
Temperature Max Preheat
Time (T
SMIN
to T
SMAX
)
Temperature
Peak Temperature
Ramp-up rate
Ramp-down rate
Time within 5°C of Peak Temperature
Time t[25°C] to Peak Temperature
Time
T
SMIN
T
SMAX
t
S
T
L
T
P
R
UP
R
DOWN
t
P
t[25°C] to Peak
t
L
150°C
200°C
60-180 sec.
217°C
260°C
3°C/sec max.
6°C/sec max.
10 sec.
480 sec.
60-150 sec.
ENVIRONMENTAL
PARAMETER
MOISTURE SENSITIVITY LEVEL
RoHS-2
REACH SVHC
HALOGEN-FREE
ESD CLASSIFICATION LEVEL
TERMINATION FINISH
VALUE
1
6/6 COMPLIANT & LEAD FREE
COMPLIANT
COMPLIANT
N/A
Au
JULY 2013
R A L T R O N E L E C T R O N I C S
1 0 4 0 0 N .W . 3 3
rd
STREET
Miami, Florida 33172
U.S.A.
Telephone: 305-593-6033
Fax: 305-594-3973
e-mail: sales@raltron.com
web site: http://www.raltron.com
微控制器 MCU
