SURFACE MOUNT TUNING FORK CRYSTAL UNIT FEATURES SERIES RSE B AND C SUITABLE FOR TIME OF DAY CLOCK APPLICATIONS 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 ±20 PPM MAXIMUM (±50 PPM AND ±100 PPM AVAILABLE) ±25°C ±5°C ±25°C ±8°C ±25°C ±15°C (-0.035 ± 0.008) PPM/°C² 6.0 TO 12.5 pF 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 50 K OHM MAXIMUM 50 K OHM MAXIMUM 20 K OHM MAXIMUM 1.0 µW MAXIMUM 0.95 pF TYPICAL ±5 PPM MAXIMUM 1.0 pF TYPICAL 0.9 pF TYPICAL -40°C TO +85°C -55°C TO +125°C PIN 3 PIN 1 PIN 2 Scale none Dimensio n in mm inch PIN 4 PIN 3 PIN 1 PIN 2 .063 1.6 .063 1.4 .055 Scale none Dimensio n in mm inch CARRIER TAPE DIMENSIONS 1.5 DIA .06 DIA REFLOW 2.0 ± 0.05 .079 ± .002 4.0 ± 0.1 .16 ± .004 7.5 COOLING PREHEATING 16 150 °C 1.6 0.7 1.4 .055 LEAD CONNECTION REFLOW SOLDERING PROFILE 230 °C 0.6 .024 5.5 .217 .099 3.7 2.5 0.6 .024 0.51 .020 .630 PIN 4 .028 0.7 4.8 0.7 .028 .189 .028 SOLDER PAD LAYOUT PIN 2 1.75 .069 .140 0.51 .020 2.29 .090 LEAD CONNECTION TEMPERATURE 8.7 .343 PIN 1 .148 .024 0.6 2.7 .106 PIN 3 MARKING AREA SOLDER PAD LAYOUT 2.54 .100 2.54 .100 5.0 .197 0.6 2.7 .106 PIN 2 3.56 PIN 1 PIN 4 RSE C 3 .024 1.7 PIN 3 MARKING AREA 9.40 .370 10.41 .410 4.06 PIN 4 .160 RSE B .067 OUTLINE DRAWINGS .295 SOLDER REFLOW CONDITIONS ±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 15 - 20 s H 25 °C 4.4 ± 0.1 .170 ± .004 30 - 40 s 8.0 ± 0.1 PACKAGING 330mm REEL DIAMETER 16mm TAPE WIDTH, 8mm PITCH QUANTITY: RSE B 2000 PIECES PER REEL RSE C 3000 PIECES PER REEL FREQUENCY VS. TEMPERATURE CURVE -10 0 25 CAVITY HEIGHT “H” RSE “B” = 4.0 mm / .157 in RSE “C” = 3.0 mm / .118 in .315 ± .004 TIME (SECONDS) 60 TEMP (°C) PART NUMBERING SYSTEM HOLDER TYPE -50 RSE LOAD CAPACITANCE FREQUENCY IN KHz CIRCUIT TYPE - B 6 OR 12.5 pF TAPE AND REEL T C ∆ f / f o(ppm) EXAMPLE: RSE-32.768-12.5-B-T Raltron Electronics • 10400 NW 33rd Street • Miami, Florida 33172 • U.S.A. Tel: 305-593-6033 Fax: 305-594-3973 e-mail: [email protected] Internet: www.raltron.com