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 32.768 KHz FREQUENCY TOLERANCE 24.00 TO 350.00 KHz RSE A, B, C, D 351.00 KHz TO 615.00 KHz ±20 PPM MAXIMUM (±50 PPM AND ±100 PPM AVAILABLE) TURNOVER TEMPERATURE ±25°C ±5°C ±25°C ±8°C ±25°C ±15°C (-0.035 ± 0.008) PPM/ ∆ °C² TEMPERATURE COEFFICIENT LOAD CAPACITANCE 6.0 TO 12.5 pF EQUIVALENT SERIES RESISTANCE (ESR) 50 K OHM MAXIMUM 50 K OHM MAXIMUM 1.0 pF TYPICAL 0.95 pF TYPICAL DRIVE LEVEL 20 K OHM MAXIMUM 1.0 µW MAXIMUM SHUNT CAPACITANCE AGING (FIRST YEAR) 0.9 pF TYPICAL ±5 PPM MAXIMUM OPERATING TEMPERATURE RANGE -40°C TO +85°C STORAGE TEMPERATURE RANGE -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 SHOCK RESISTANCE SOLDER REFLOW CONDITIONS 230 °C MAXIMUM FOR 20 s MAXIMUM OUTLINE DRAWINGS PIN 2 PIN 1 LEAD CONNECTION “A” 8.7 .343 1.6 .063 0.7 .028 MARKING AREA 0.7 4.8 0.7 .028 .028 .189 SOLDER PAD LAYOUT PIN 2 SOLDER PAD LAYOUT 3.56 .140 0.51 .020 2.29 .090 2.54 .100 2.54 .100 0.51 .020 PIN 4 PIN 3 PIN 1 PIN 2 0.6 .024 LEAD CONNECTION “B” TEMPERATURE 1.4 .055 1.4 .055 REFLOW 1.5 DIA .06 DIA 2.0 ± 0.05 .079 ± .002 4.0 ± 0.1 .16 ± .004 PIN 4 PIN 3 PIN 1 PIN 2 7.5 .295 COOLING 16 15 - 20 s H 25 °C 30 - 40 s 4.3 ± 0.1 8.0 ± 0.1 .170 ± .004 .315 ± .004 CAVITY HEIGHT "H" RSE "A AND B" = 4.0 mm/.157 in RSE "C AND D" = 3.0 mm/.118 in TIME (SECONDS) 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 FREQUENCY VS. TEMPERATURE CURVE -10 0 PIN 2 LEAD CONNECTION "D" PREHEATING 150 °C PIN 1 LEAD CONNECTION "C" CARRIER TAPE DIMENSIONS REFLOW SOLDERING PROFILE 230 °C 0.6 .024 5.5 .217 PIN 3 1.6 .063 PIN 3 PIN 1 3.7 PIN 4 PIN 4 .630 2.7 .106 PIN 3 PIN 4 1.75 .069 PIN 2 5.0 .197 RSE C, D 2.5 PIN 1 2.7 .106 mm inch .099 9.40 .370 10.41 .410 3 0.6 .024 MARKING AREA 1.7 .067 PIN 3 4.06 .160 PIN 4 0.6 .024 Scale none Dimension in .148 RSE A, B 25 60 TEMP (°C) PART NUMBERING SYSTEM -50 HOLDER TYPE RSE LOAD CAPACITANCE FREQUENCY IN KHz 6 OR 12.5 pF ∆ f/fo (ppm) - CIRCUIT TYPE A B C D TAPE AND REEL TR 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: [email protected] Internet: http://www.raltron.com