BY228 SERIES CLAMPER / DAMPER GLASS PASSIVATED RECTIFIER * Reverse Voltage - 1500 Volts FEATURES ♦ High temperature metallurgically bonded construction ♦ Glass passivated cavity-free junction ♦ 2.5 ampere operation at TA=50°C with no thermal runaway ♦ Typical IR less than 0.1µA ♦ Hermetically sealed package ♦ Capable of meeting environmental standards of MIL-S-19500 ♦ High temperature soldering guaranteed: 350°C/10 seconds, 0.375" (9.5mm) lead length, 5 lbs. (2.3kg) tension P A T E N T E D Case Style G3 1.0 (25.4) MIN 0.250 (6.3) 0.170 (4.3) DIA. 0.300 (7.6) MAX. 0.052 (1.32) 0.048 (1.22) DIA. Forward Current - 2.5 Amperes 1.0 (25.4) MIN MECHANICAL DATA Dimensions in inches and (millimeters) *Brazed-lead assembly is covered by Patent No. 3,930,306 Case: Solid glass body Terminals: Solder plated axial leads, solderable per MIL-STD-750, Method 2026 Polarity: Color band denotes cathode end Mounting Position: Any Weight: 0.04 ounce, 1.1 grams MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25°C ambient temperature unless otherwise specified. SYMBOLS BY228 UNITS Maximum non repetitive peak reverse voltage VRSM 1650 Volts Maximum repetitive peak reverse voltage VRRM 1500 Volts Maximum RMS voltage VRMS 1050 Volts Maximum DC blocking voltage VDC 1500 Volts Maximum average forward rectified current 0.375” (9.5mm) lead length at TA= 50°C I(AV) 2.5 Amps Peak forward surge current 10ms single half sine-wave superimposed on rated load IFSM 50.0 Amps VF 1.6 Volts IFWM 5.0 Amps IFRM 10.0 Amps IR 5.0 200 µA trr 20.0 µs Maximum instantaneous forward voltage at 2.5A Working peak forward current at TA=75°C Peak repetitive forward surge current at TA=75°C Maximum peak reverse current at rated peak reverse voltage TA=25°C TJ=140°C Maximum reverse recovery time (NOTE 1) Maximum forward recovery time (NOTE 2) tfr 1.0 µs Typical junction capacitance (NOTE 2) CJ 40.0 pF RΘJA 20.0 °C/W TJ -65 to +150 °C TSTG -65 to +200 °C Typical thermal resistance (NOTE 4) Operating junction temperature range Storage temperature range NOTES: (1) Measured with IF=1.0A, IR=50mA, di/dt=50mA/µs (2) Measured with IF=5.0A with tr=0.1µs (3) Measured at 1.0 MHZ and applied reverse voltage of 4.0 Volts (4) Thermal resistance from junction to ambient at 0.375" (9.5mm) lead length, P.C.B. mounted 4/98 RATINGS AND CHARACTERISTIC CURVES BY228 SERIES FIG. 2 - MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT AVERAGE FORWARD RECTIFIED CURRENT,AMPERES 50 to 60 Hz RESISTIVE OR INDUCTIVE LOAD 0.375" (9.5mm) LEAD LENGTH 2.0 1.0 0 25 0 75 50 100 125 150 175 PEAK FORWARD SURGE CURRENT, AMPERES FIG. 1 - FORWARD CURRENT DERATING CURVE 3.0 100 NO LOAD RATED LOAD 10 100 FIG. 4 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS 30 INSTANTANEOUS FORWARD CURRENT, AMPERES 100 TA=75°C 10 10 10 TJ=25°C PULSE WIDTH=300µs 1% DUTY CYCLE 1 0.1 0.01 0.2 100 DUTY CYCLE, PERCENT, % 0.4 0.6 0.8 1.0 1.2 100 TJ=25°C f=1.0 MHz JUNCTION CAPACITANCE, pF TJ=125°C 1 0.1 TJ=25°C 10 0.01 20 40 60 80 1.6 FIG. 6 - TYPICAL JUNCTION CAPACITANCE 10 0 1.4 INSTANTANEOUS FORWARD VOLTAGE, VOLTS FIG. 5 - TYPICAL REVERSE CHARACTERISTICS INSTANTANEOUS REVERSE CURRENT, MICROAMPERES 10 NUMBER OF CYCLES AT 50 Hz FIG. 3 -MAXIMUM PEAK REPETITIVE FORWARD SURGE CURRENT MAXIMUM PEAK REPETITIVE FORWARD CURRENT, ApK TJ=TJ max. 10ms SINGLE SINE WAVE 1 AMBIENT TEMPERATURE,°C 1 200 100 PERCENT OF RATED PEAK REVERSE VOLTAGE, % 1 10 REVERSE VOLTAGE, VOLTS 100