SURFACE MOUNT TUNING FORK CRYSTAL UNIT
FEATURES
SERIES
SUITABLE FOR TIME OF DAY CLOCK APPLICATIONS
LOW FREQUENCY RANGE
EXCELLENT FOR AUTOMATIC AND HIGH DENSITY SURFACE MOUNTING
SPECIFICATIONS
NOMINAL FREQUENCY
FREQUENCY TOLERANCE
TURNOVER TEMPERATURE
TEMPERATURE COEFFICIENT
LOAD CAPACITANCE
EQUIVALENT SERIES
RESISTANCE (ESR)
DRIVE LEVEL
SHUNT CAPACITANCE
AGING (FIRST YEAR)
OPERATING TEMPERATURE
RANGE
STORAGE TEMPERATURE
RANGE
SHOCK RESISTANCE
SOLDER REFLOW CONDITIONS
1.0 pF TYPICAL
50 K OHM MAXIMUM
32.768 KHz
24.00 TO 350.00 KHz
351.00 KHz TO 615.00 KHz
±20 PPM MAXIMUM (±50 PPM AND ±100 PPM AVAILABLE)
±25°C ±5°C
±25°C ±8°C
(-0.035 ± 0.008) PPM/
∆
°C²
6.0 TO 12.5 pF
50 K OHM MAXIMUM
1.0 µW MAXIMUM
0.95 pF TYPICAL
±5 PPM MAXIMUM
-40°C TO +85°C
-55°C TO +125°C
±5 PPM MAXIMUM 75 cm DROP TEST IN 3 AXES ONTO A HARD SURFACE OR
3000 g x 0.3 ms x ½ SINEWAVE IN 3 AXES
230 °C MAXIMUM FOR 20 s MAXIMUM
0.9 pF TYPICAL
20 K OHM MAXIMUM
±25°C ±15°C
RSE A, B, C, D
OUTLINE DRAWINGS
0.6
.024
1.7
.067
0.7
.028
1.6
.063
PIN 4
MARKING
AREA
PIN 1
9.40
.370
10.41
.410
PIN 3
PIN 4
PIN 4
PIN 3
PIN 2
PIN 1
LEAD CONNECTION “A”
MARKING
AREA
8.7
.343
PIN 3
4.06
.160
0.6
.024
PIN 2
2.7
.106
5.0
.197
2.7
.106
PIN 1
.148
3.7
3
1.6
.063
RSE A, B
Scale none Dimension in
mm
inch
RSE C, D
PIN 4
PIN 3
PIN 2
SOLDER PAD LAYOUT
0.7
4.8
0.7
.028
.028
.189
SOLDER PAD LAYOUT
PIN 1
PIN 2
LEAD CONNECTION "C"
PIN 4
PIN 3
3.56
.140
PIN 4
0.51
.020
2.29
.090
0.51
.020
PIN 1
PIN 3
PIN 2
0.6
.024
0.6
.024
1.4
.055
1.4
.055
2.54
.100
2.54
.100
.099
2.5
LEAD CONNECTION “B”
5.5
.217
PIN 1
PIN 2
LEAD CONNECTION "D"
REFLOW SOLDERING PROFILE
230 °C
REFLOW
CARRIER TAPE DIMENSIONS
1.75
.069
7.5
.295
.630
H
4.3 ± 0.1
.170 ± .004
8.0 ± 0.1
.315 ± .004
CAVITY HEIGHT "H"
RSE "A AND B" = 4.0 mm/.157 in
RSE "C AND D" = 3.0 mm/.118 in
1.5 DIA
.06 DIA
2.0 ± 0.05
.079 ± .002
4.0 ± 0.1
.16 ± .004
TEMPERATURE
COOLING
150 °C
PREHEATING
15 - 20 s
25 °C
30 - 40 s
TIME (SECONDS)
FREQUENCY VS. TEMPERATURE CURVE
-10
0
25
60
TEMP
(°C)
PACKAGING
330mm REEL DIAMETER
16mm TAPE WIDTH, 8mm PITCH
QUANTITY: RSE A OR B 2000 PIECES PER REEL
RSE C OR D 3000 PIECES PER REEL
PART NUMBERING SYSTEM
-50
HOLDER
TYPE
-
RSE
FREQUENCY
-
IN KHz
LOAD
CAPACITANCE
-
CIRCUIT
TYPE
A
B
C
D
-
16
TAPE AND REEL
6 OR 12.5 pF
TR
∆
f/fo (ppm)
EXAMPLE: RSE-32.768-12.5-B-TR
Raltron Electronics Corporation 10651 NW 19th St. Miami, Florida 33172 U.S.A.
Tel: 305-593-6033 Fax: 305-594-3973 e-mail: sales@raltron.com Internet: http://www.raltron.com
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