RSEA Datasheet, PDF (1/1 Pages) Raltron Electronics Corporation – SURFACE MOUNT TUNING FORK CRYSTAL UNIT

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