Formosa MS 1 W Surface Mount Zener Diode ZS300-BL Zener diodes Features SMA * Plastic package has Underwriters Laboratory Flammability Classification 94V-O Utilizing Flame Retardant Epoxy Molding Compound. 0.185(4.8) 0.173(4.4) * For surface mounted applications. 0.012(0.3) Typ. 0.110(2.8) 0.094(2.4) * Exceeds environmental standards of MIL-S-19500/228 * Low zener impedance 0.165(4.2) 0.150(3.8) * Low profile package 0.067(1.7) 0.060(1.5) 0.040(1.0) Typ. 0.040 (1.0) Typ. Mechanical data Dimensions in inches and (millimeters) Case : Molded plastic, JEDEC DO-214AC Terminals : Solder plated, solderable per MIL-STD-750 Polarity : Indicated by cathode band Mounting Position : Any Weight : 0.0015 ounce, 0.05 gram MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25oC ambient temperature unless otherwise specified Storage and operating temperature range -55 to + 150oC Type ZS300B Zener Breakdown Voltage Maximum Reverse Current @ Measurement Voltage Dynamic Impedances Maximum Forward Voltage @ IF = 0.2A VZ I ZT Z ZT I ZK Z ZK VR IR VF V mA ohms mA ohms V uA V 300 5 5000 0.25 9000 285 0.5 1.2 RATING AND CHARACTERISTIC CURVES (Z300-BL) FIG. 2 - ZENER VOLTAGE VERSUS ZENER CURRENT 10 1.00 I Z ZENER CURRENT, mA REVERSE POWER DISSPATION WATTS FIG. 1 - MAXIMUM CONTINUOUS POWER DISSIPARION 0.75 0.50 SINGLE PHASE HALF WAVE 60H Z 0.25 RESISTIVE OR INDUCTIVE LOAD 5.0 2.0 1.0 0.5 0.2 0.1 0.00 100 25 75 50 100 125 150 150 200 250 300 350 400 175 V Z ZENER VOLTAGE, VOLTS LEAD TEMPERATURE, oC FIG. 3 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS INSTANTANEOUS REVERSE CURRENT, uA INSTANTANEOUS FORWARD CURRENT, AMPERES FIG. 4 - TYPICAL REVERSE CHARACTERISTICS 10 1.0 0.1 o TJ = 25 C PULSE WIDTH=300ms 1% DUTY CYCLE 10 4.0 1.0 0.4 0.04 0.01 0 20 40 60 80 100 120 PERCENT OF RATED ZENER VOLTAGE, % 0.01 0.4 0.6 0.8 1.0 1.2 1.4 1.6 INSTANTANEOUS FORWARD VOLTAGE, VOLTS FIG. 5 - TYPICAL TEMPERATURE COEFFICIENTS TEMPERATURE COEFFICIENTS (mV/ oC) @ I ZT T J =25 oC 0.1 1000 500 200 100 50 20 10 10 20 50 100 200 500 V Z ZENER VOLTAGE @ IZT , VOLTS 1000 140