1N4736A~1N4757A SILICON ZENER DIODE VOLTAGE 6.8 to 51 Volts POWER 1.0 Watts DO-41 Unit: inch(mm) FEATURES • Low profile package .034(.86) 1.0(25.4)MIN. • Built-in strain relief • Low inductance • High temperature soldering : 260°C /10 seconds at terminals • Plastic package has Underwriters Laboratory Flammability Classification 94V-O .205(5.2) .160(4.1) • In compliance with EU RoHS 2002/95/EC directives .028(.71) MECHANICALDATA • Case: Molded plastic DO-41 • Epoxy:UL 94V-O rate flame retardant 1.0(25.4)MIN. .107(2.7) • Terminals: Axial leads, solderable per MIL-STD-750, Method 2026 guaranteed .080(2.0) • Polarity: Color band denotes positive end • Mounting position:Any • Weight: 0.012 ounce, 0.3 gram • Packing information B - 1K per Bulk box T/R - 5K per 13" paper Reel T/B - 2.5K per horiz. tape & Ammo box MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25°C ambient temperature unless otherwise specified. Parameter Power Dissipation at Tamb = 25 O C Symbol Value Units PTOT 1* W TJ -55 to + 150 O C TSTG -55 to + 150 O C Junction Temperature Storage Temperature Range *Valid provided that leads at a distance of 10mm from case are kept at ambient temperature. STAD-JUN.15.2009 2 PAGE . 1 1N4736A~1N4757A N o m i n a l Ze n e r Vo l t a g e Part Number M a x i m u m Ze n e r I m p e d a n c e V Z @ I ZT Z ZT @ I ZT M a x i m u m Leakage Current Z ZK @ I ZK Marking C ode I R @ VR N o m. V Min . V Ma x . V Ω mA Ω mA uA V D O-4 1 1N4736A 6.8 6.46 7.14 3.5 37 700 1 5 4 1N4736A 1N4737A 7.5 7.13 7.88 4 34 700 0.5 5 5 1N4737A 1N4738A 8.2 7.79 8.61 4.5 31 700 0.5 5 6 1N4738A 1N4739A 9.1 8.65 9.56 5 28 700 0.5 0.5 7 1N4739A 1N4740A 10 9.5 10.5 7 25 700 0.25 0.5 7.6 1N4740A 1N4741A 11 10.45 11.55 8 23 700 0.25 0.1 8.4 1N4741A 1N4742A 12 11.4 12.6 9 21 700 0.25 0.1 9.1 1N4742A 1N4743A 13 12.35 13.65 10 19 700 0.25 0.1 9.9 1N4743A 1N4744A 15 14.25 15.75 14 17 700 0.25 0.1 11.4 1N4744A 1N4745A 16 15.2 16.8 16 15.5 700 0.25 0.1 12.2 1N4745A 1N4746A 18 17.1 18.9 20 14 750 0.25 0.1 13.7 1N4746A 1N4747A 20 19 21 22 12.5 750 0.25 0.1 15.2 1N4747A 1N4748A 22 20.9 23.1 23 11.5 750 0.25 0.1 16.7 1N4748A 1N4749A 24 22.8 25.2 25 10.5 750 0.25 0.1 18.2 1N4749A 1N4750A 27 25.65 28.35 35 9.5 750 0.25 0.1 20.6 1N4750A 1N4751A 30 28.5 31.5 40 8.5 1000 0.25 0.1 22.8 1N4751A 1N4752A 33 31.35 34.65 45 7.5 1000 0.25 0.1 25.1 1N4752A 1N4753A 36 34.2 37.8 50 7 1000 0.25 0.1 27.4 1N4753A 1N4754A 39 37.05 40.95 60 6.5 1000 0.25 0.1 29.7 1N4754A 1N4755A 43 40.85 45.15 70 6 1500 0.25 0.1 32.7 1N4755A 1N4756A 47 44.65 49.35 80 5.5 1500 0.25 0.1 35.8 1N4756A 1N4757A 51 48.45 53.55 95 5 1500 0.25 0.1 38.8 1N4757A 1.0 Watt ZENER STAD-JUN.15.2009 2 PAGE . 2 1N4736A~1N4757A NOTE: 1. Tolerance and Type Number Designation. The type umbers listed have a standard tolerance on the nominal zener voltage of + 5% 2. Specials Available Include: A. Nominal zener voltages between the voltages shown and tighter voltage tolerances. B. Matched sets. 3. Zener Voltage (Vz) Measurement. Guarantees the zener voltage when measured at 90 seconds while maintaining o o the lead temperature (T L ) at 30 C + 1 C, from the diode body. 4. Zener Impedance (Zz) Derivation. The zener impedance is derived from the 60 cycle ac voltage, which results when an ac current having an rms value equal to 10% of the dc zener current (Izt or Izk) is superimposed on Izt or Izk. 5. Surge Current (Ir) Non-Repetitive. The rating listed in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of 1/2 P D , MAXIMUM POWER DISSIPATION (WATTS) RATING AND CHARACTERISTICS CURVES 1.0 0.75 0.5 0.25 0 0 20 40 60 80 100 120 140 160 180 200 O T A , AMBIENT TEMPERATURE ( C) FIGURE.1 POWER TEMPERATURE DERATING CURVE a.RAMGE FOR UNITS TO 12 VOLTS b.RAMGE FOR UNITS 12 TO 51 VOLTS FIGURE.2 TEMPERATURE COEFICIENTS O O (-55 C TO +150 C TEMPERATURE RANGE; 90% OF THE UNITS ARE IN THE RANGES INDICATED.) STAD-JUN.15.2009 2 PAGE . 3 1N4736A~1N4757A FIGURE.3TYPICAL THERMAL RESISTANCE versus LEAD LENGTH FIGURE.4 EFFECT OF ZENER CURRENT FIGURE.5 MZXIMUM SURGE POWER FIGURE.6 EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE STAD-JUN.15.2009 2 FIGURE.7 EFFECT OF ZENER VOLTAGE ON ZENER IMPEDANCE PAGE . 4 1N4736A~1N4757A m FIGURE.9 TYPICAL CAPACITANCE versus Vz FIGURE.8 TYPICAL LEAKAGE CURRENT STAD-JUN.15.2009 2 FIGURE.10 TYPICAL FORWARD CHARACTERISTICS PAGE . 5