KBU8A THRU KBU8M SINGLE-PHASE BRIDGE RECTIFIER Reverse Voltage - 50 to 1000 Volts Forward Current - 8.0 Amperes FEATURES Case Style KBU 0.935 (23.7) 0.160 (4.1) 0.140 (3.6) 0.895 (22.7) 0.185 (4.7) 0.165 (4.2) 45o 0.760 (19.3) MAX. 0.085 (2.2) 0.065 (1.7) 0.700 (17.8) 0.660 (16.8) 0.075 (1.9) R. TYP. (2 PLACES) 0.455 (11.3) 0.405 (10.3) 1.0 (25.4) MIN. 0.052 (1.3) 0.048 (1.2) DIA. 0.220 (5.6) 0.180 (4.6) 0.240 (6.09) 0.200 (5.08) 0.280 (7.1) 0.260 (6.6) 0.205 (5.2) 0.185 (4.7) Dimensions in inches and (millimeters) ♦ Plastic material used carries Underwriters Laboratory Flammability Classification 94V-0 ♦ This series is UL listed under Recognized Component Index, file number E54214 ♦ High case dielectric strength of 1500 VRMS ♦ Ideal for printed circuit boards ♦ High forward surge current capability ♦ High temperature soldering guaranteed: 250°C/10 seconds, 0.375" (9.5mm) lead length, 5lbs. (2.3 kg) tension MECHANICAL DATA Case: Molded plastic body Terminals: Plated leads solderable per MIL-STD-750, Method 2026 Mounting Position: Any (NOTE 1) Mounting Torque: 5 in.-lb. max. Weight: 0.3 ounce, 8.0 grams MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25°C ambient temperature unless otherwise specified. SYMBOLS KBU 8A KBU 8B KBU 8D KBU 8G KBU 8J KBU 8K KBU 8M UNITS Maximum repetitive peak reverse voltage VRRM 50 100 200 400 600 800 1000 Volts Maximum RMS voltage VRMS 35 70 140 280 420 560 700 Volts Maximum DC blocking voltage VDC 50 100 200 400 600 800 1000 Volts Maximum average forward rectified TC=100°C (NOTE 1, 3) output current at TA=45°C (NOTE 2) I(AV) 8.0 6.0 Amps Peak forward surge current single half sine-wave superimposed on rated load (JEDEC Method) TJ=150°C IFSM 300.0 Amps VF 1.0 Volts IR 10.0 1.0 µA mA RΘJA RΘJC 18.0 3.0 °C/W TJ, TSTG -50 to +150 °C Maximum instantaneous forward voltage drop per leg at 8.0A Maximum DC reverse current at rated DC blocking voltage per leg TA=25°C TA=125°C Typical thermal resistance per leg (NOTE 2) (NOTE 3) Operating junction and storage temperature range NOTES: (1) Recommended mounting position is to bolt down on heatsink with silicone thermal compound for maximum heat transfer with #6 screw (2) Units mounted in free air, no heatsink, P.C.B. at 0.375" (9.5mm) lead length with 0.5 x 0.5” (12 x 12mm) copper pads (3) Units mounted on a 3.0 x 3.0” x 0.11" thick (7.5 x 7.5 x 0.3cm) Al. Plate heatsink 4/98 RATINGS AND CHARACTERISTICS CURVES KBU8A THRU KBU8M FIG. 2 - MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT 300 8.0 HEAT-SINK MOUNTING,TC 3.0 x 3.0 x 12”THK AL. PLATE (7.5 x 0.3cm) PEAK FORWARD SURGE CURRENT, AMPERES AVERAGE FORWARD CURRENT, AMPERES FIG. 1 - DERATING CURVE OUTPUT RECTIFIED CURRENT 6.0 4.0 P.C.B. MOUNTING, TA 0.375” (9.5mm) LEAD LENGTH 0.5 x 0.5” (12 x 12mm) COPPER PADS 2.0 60 HZ RESISTIVE OR INDUCTIVE LOAD 0 0 50 100 150 TEMPERATURE, °C SINGLE SINE-WAVE (JEDEC Method) TJ=150°C 250 200 150 100 50 0 1.0 CYCLE 1 10 100 NUMBER OF CYCLES AT 60 HZ FIG. 4 - TYPICAL REVERSE LEAKAGE CHARACTERISTICS PER LEG FIG. 3 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS PER LEG 50 INSTANTANEOUS REVERSE CURRENT, MICROAMPERES INSTANTANEOUS FORWARD CURRENT, AMPERES 100 TJ=25°C PULSE WIDTH=300µs 1% DUTY CYCLE 10 1 0.1 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 10 TJ=100°C 1 0.1 TJ=25°C INSTANTANEOUS FORWARD VOLTAGE, VOLTS 0.01 0 20 40 60 80 PERCENT OF RATED PEAK REVERSE VOLTAGE, % FIG. 5 - TYPICAL JUNCTION CAPACITANCE PER LEG JUNCTION CAPACITANCE, pF 400 TJ=25°C f=1.0 MHz Vsig=50mVp-p 100 10 1 10 REVERSE VOLTAGE, VOLTS 100 100